From bdf5e388ca0d1e6f5e227ba52481fe6b7667ec4d Mon Sep 17 00:00:00 2001 From: Marius van der Wijden Date: Thu, 23 Nov 2023 17:28:26 +0300 Subject: [PATCH] cmd, les, tests: remove light client code (#28586) * cmd, les, tests: remove light client code This commit removes the light client (LES) code. Since the merge the light client has been broken and it is hard to maintain it alongside the normal client. We decided it would be best to remove it for now and maybe rework and reintroduce it in the future. * cmd, eth: remove some more mentions of light mode * cmd: re-add flags and mark as deprecated * cmd: warn the user about deprecated flags * eth: better error message --- cmd/faucet/README.md | 52 - cmd/faucet/faucet.go | 891 -------------- cmd/faucet/faucet.html | 233 ---- cmd/faucet/faucet_test.go | 46 - cmd/geth/config.go | 3 +- cmd/geth/les_test.go | 206 ---- cmd/geth/main.go | 31 +- cmd/geth/run_test.go | 9 + cmd/utils/flags.go | 128 +- cmd/utils/flags_legacy.go | 41 + eth/backend.go | 2 +- eth/ethconfig/config.go | 10 - ethstats/ethstats.go | 3 +- les/api.go | 349 ------ les/api_backend.go | 337 ------ les/api_test.go | 512 -------- les/benchmark.go | 351 ------ les/bloombits.go | 75 -- les/client.go | 377 ------ les/client_handler.go | 309 ----- les/commons.go | 99 -- les/costtracker.go | 517 -------- les/distributor.go | 313 ----- les/distributor_test.go | 189 --- les/enr_entry.go | 72 -- les/flowcontrol/control.go | 433 ------- les/flowcontrol/logger.go | 65 -- les/flowcontrol/manager.go | 476 -------- les/flowcontrol/manager_test.go | 130 --- les/handler_test.go | 754 ------------ les/metrics.go | 151 --- les/odr.go | 237 ---- les/odr_requests.go | 537 --------- les/odr_test.go | 458 -------- les/peer.go | 1362 ---------------------- les/peer_test.go | 166 --- les/protocol.go | 327 ------ les/request_test.go | 129 -- les/retrieve.go | 421 ------- les/server.go | 281 ----- les/server_handler.go | 436 ------- les/server_requests.go | 566 --------- les/servingqueue.go | 365 ------ les/state_accessor.go | 80 -- les/test_helper.go | 626 ---------- les/txrelay.go | 179 --- les/utils/exec_queue.go | 105 -- les/utils/exec_queue_test.go | 60 - les/utils/expiredvalue.go | 270 ----- les/utils/expiredvalue_test.go | 195 ---- les/utils/limiter.go | 398 ------- les/utils/limiter_test.go | 206 ---- les/utils/timeutils.go | 69 -- les/utils/timeutils_test.go | 47 - les/utils/weighted_select.go | 183 --- les/utils/weighted_select_test.go | 68 -- les/vflux/client/api.go | 107 -- les/vflux/client/fillset.go | 107 -- les/vflux/client/fillset_test.go | 119 -- les/vflux/client/queueiterator.go | 123 -- les/vflux/client/queueiterator_test.go | 99 -- les/vflux/client/requestbasket.go | 285 ----- les/vflux/client/requestbasket_test.go | 171 --- les/vflux/client/serverpool.go | 605 ---------- les/vflux/client/serverpool_test.go | 424 ------- les/vflux/client/timestats.go | 237 ---- les/vflux/client/timestats_test.go | 145 --- les/vflux/client/valuetracker.go | 506 -------- les/vflux/client/valuetracker_test.go | 137 --- les/vflux/client/wrsiterator.go | 127 -- les/vflux/client/wrsiterator_test.go | 105 -- les/vflux/requests.go | 180 --- les/vflux/server/balance.go | 693 ----------- les/vflux/server/balance_test.go | 459 -------- les/vflux/server/balance_tracker.go | 300 ----- les/vflux/server/clientdb.go | 250 ---- les/vflux/server/clientdb_test.go | 148 --- les/vflux/server/clientpool.go | 328 ------ les/vflux/server/clientpool_test.go | 640 ---------- les/vflux/server/metrics.go | 35 - les/vflux/server/prioritypool.go | 695 ----------- les/vflux/server/prioritypool_test.go | 237 ---- les/vflux/server/service.go | 120 -- les/vflux/server/status.go | 59 - tests/fuzzers/les/les-fuzzer.go | 411 ------- tests/fuzzers/les/les_test.go | 25 - tests/fuzzers/vflux/clientpool-fuzzer.go | 333 ------ tests/fuzzers/vflux/clientpool_test.go | 25 - 88 files changed, 81 insertions(+), 23089 deletions(-) delete mode 100644 cmd/faucet/README.md delete mode 100644 cmd/faucet/faucet.go delete mode 100644 cmd/faucet/faucet.html delete mode 100644 cmd/faucet/faucet_test.go delete mode 100644 cmd/geth/les_test.go delete mode 100644 les/api.go delete mode 100644 les/api_backend.go delete mode 100644 les/api_test.go delete mode 100644 les/benchmark.go delete mode 100644 les/bloombits.go delete mode 100644 les/client.go delete mode 100644 les/client_handler.go delete mode 100644 les/commons.go delete mode 100644 les/costtracker.go delete mode 100644 les/distributor.go delete mode 100644 les/distributor_test.go delete mode 100644 les/enr_entry.go delete mode 100644 les/flowcontrol/control.go delete mode 100644 les/flowcontrol/logger.go delete mode 100644 les/flowcontrol/manager.go delete mode 100644 les/flowcontrol/manager_test.go delete mode 100644 les/handler_test.go delete mode 100644 les/metrics.go delete mode 100644 les/odr.go delete mode 100644 les/odr_requests.go delete mode 100644 les/odr_test.go delete mode 100644 les/peer.go delete mode 100644 les/peer_test.go delete mode 100644 les/protocol.go delete mode 100644 les/request_test.go delete mode 100644 les/retrieve.go delete mode 100644 les/server.go delete mode 100644 les/server_handler.go delete mode 100644 les/server_requests.go delete mode 100644 les/servingqueue.go delete mode 100644 les/state_accessor.go delete mode 100644 les/test_helper.go delete mode 100644 les/txrelay.go delete mode 100644 les/utils/exec_queue.go delete mode 100644 les/utils/exec_queue_test.go delete mode 100644 les/utils/expiredvalue.go delete mode 100644 les/utils/expiredvalue_test.go delete mode 100644 les/utils/limiter.go delete mode 100644 les/utils/limiter_test.go delete mode 100644 les/utils/timeutils.go delete mode 100644 les/utils/timeutils_test.go delete mode 100644 les/utils/weighted_select.go delete mode 100644 les/utils/weighted_select_test.go delete mode 100644 les/vflux/client/api.go delete mode 100644 les/vflux/client/fillset.go delete mode 100644 les/vflux/client/fillset_test.go delete mode 100644 les/vflux/client/queueiterator.go delete mode 100644 les/vflux/client/queueiterator_test.go delete mode 100644 les/vflux/client/requestbasket.go delete mode 100644 les/vflux/client/requestbasket_test.go delete mode 100644 les/vflux/client/serverpool.go delete mode 100644 les/vflux/client/serverpool_test.go delete mode 100644 les/vflux/client/timestats.go delete mode 100644 les/vflux/client/timestats_test.go delete mode 100644 les/vflux/client/valuetracker.go delete mode 100644 les/vflux/client/valuetracker_test.go delete mode 100644 les/vflux/client/wrsiterator.go delete mode 100644 les/vflux/client/wrsiterator_test.go delete mode 100644 les/vflux/requests.go delete mode 100644 les/vflux/server/balance.go delete mode 100644 les/vflux/server/balance_test.go delete mode 100644 les/vflux/server/balance_tracker.go delete mode 100644 les/vflux/server/clientdb.go delete mode 100644 les/vflux/server/clientdb_test.go delete mode 100644 les/vflux/server/clientpool.go delete mode 100644 les/vflux/server/clientpool_test.go delete mode 100644 les/vflux/server/metrics.go delete mode 100644 les/vflux/server/prioritypool.go delete mode 100644 les/vflux/server/prioritypool_test.go delete mode 100644 les/vflux/server/service.go delete mode 100644 les/vflux/server/status.go delete mode 100644 tests/fuzzers/les/les-fuzzer.go delete mode 100644 tests/fuzzers/les/les_test.go delete mode 100644 tests/fuzzers/vflux/clientpool-fuzzer.go delete mode 100644 tests/fuzzers/vflux/clientpool_test.go diff --git a/cmd/faucet/README.md b/cmd/faucet/README.md deleted file mode 100644 index 7e857fa0ee..0000000000 --- a/cmd/faucet/README.md +++ /dev/null @@ -1,52 +0,0 @@ -# Faucet - -The `faucet` is a simplistic web application with the goal of distributing small amounts of Ether in private and test networks. - -Users need to post their Ethereum addresses to fund in a Twitter status update or public Facebook post and share the link to the faucet. The faucet will in turn deduplicate user requests and send the Ether. After a funding round, the faucet prevents the same user from requesting again for a pre-configured amount of time, proportional to the amount of Ether requested. - -## Operation - -The `faucet` is a single binary app (everything included) with all configurations set via command line flags and a few files. - -First things first, the `faucet` needs to connect to an Ethereum network, for which it needs the necessary genesis and network infos. Each of the following flags must be set: - -- `-genesis` is a path to a file containing the network `genesis.json`. or using: - - `-goerli` with the faucet with Görli network config - - `-sepolia` with the faucet with Sepolia network config -- `-network` is the devp2p network id used during connection -- `-bootnodes` is a list of `enode://` ids to join the network through - -The `faucet` will use the `les` protocol to join the configured Ethereum network and will store its data in `$HOME/.faucet` (currently not configurable). - -## Funding - -To be able to distribute funds, the `faucet` needs access to an already funded Ethereum account. This can be configured via: - -- `-account.json` is a path to the Ethereum account's JSON key file -- `-account.pass` is a path to a text file with the decryption passphrase - -The faucet is able to distribute various amounts of Ether in exchange for various timeouts. These can be configured via: - -- `-faucet.amount` is the number of Ethers to send by default -- `-faucet.minutes` is the time to wait before allowing a rerequest -- `-faucet.tiers` is the funding tiers to support (x3 time, x2.5 funds) - -## Sybil protection - -To prevent the same user from exhausting funds in a loop, the `faucet` ties requests to social networks and captcha resolvers. - -Captcha protection uses Google's invisible ReCaptcha, thus the `faucet` needs to run on a live domain. The domain needs to be registered in Google's systems to retrieve the captcha API token and secrets. After doing so, captcha protection may be enabled via: - -- `-captcha.token` is the API token for ReCaptcha -- `-captcha.secret` is the API secret for ReCaptcha - -Sybil protection via Twitter requires an API key as of 15th December, 2020. To obtain it, a Twitter user must be upgraded to developer status and a new Twitter App deployed with it. The app's `Bearer` token is required by the faucet to retrieve tweet data: - -- `-twitter.token` is the Bearer token for `v2` API access -- `-twitter.token.v1` is the Bearer token for `v1` API access - -Sybil protection via Facebook uses the website to directly download post data thus does not currently require an API configuration. - -## Miscellaneous - -Beside the above - mostly essential - CLI flags, there are a number that can be used to fine-tune the `faucet`'s operation. Please see `faucet --help` for a full list. diff --git a/cmd/faucet/faucet.go b/cmd/faucet/faucet.go deleted file mode 100644 index 8f4127216e..0000000000 --- a/cmd/faucet/faucet.go +++ /dev/null @@ -1,891 +0,0 @@ -// Copyright 2017 The go-ethereum Authors -// This file is part of go-ethereum. -// -// go-ethereum is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// go-ethereum is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with go-ethereum. If not, see . - -// faucet is an Ether faucet backed by a light client. -package main - -import ( - "bytes" - "context" - _ "embed" - "encoding/json" - "errors" - "flag" - "fmt" - "html/template" - "io" - "math" - "math/big" - "net/http" - "net/url" - "os" - "path/filepath" - "regexp" - "strconv" - "strings" - "sync" - "time" - - "github.com/ethereum/go-ethereum/accounts" - "github.com/ethereum/go-ethereum/accounts/keystore" - "github.com/ethereum/go-ethereum/cmd/utils" - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/eth/downloader" - "github.com/ethereum/go-ethereum/eth/ethconfig" - "github.com/ethereum/go-ethereum/ethclient" - "github.com/ethereum/go-ethereum/ethstats" - "github.com/ethereum/go-ethereum/internal/version" - "github.com/ethereum/go-ethereum/les" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/node" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/nat" - "github.com/ethereum/go-ethereum/params" - "github.com/gorilla/websocket" -) - -var ( - genesisFlag = flag.String("genesis", "", "Genesis json file to seed the chain with") - apiPortFlag = flag.Int("apiport", 8080, "Listener port for the HTTP API connection") - ethPortFlag = flag.Int("ethport", 30303, "Listener port for the devp2p connection") - bootFlag = flag.String("bootnodes", "", "Comma separated bootnode enode URLs to seed with") - netFlag = flag.Uint64("network", 0, "Network ID to use for the Ethereum protocol") - statsFlag = flag.String("ethstats", "", "Ethstats network monitoring auth string") - - netnameFlag = flag.String("faucet.name", "", "Network name to assign to the faucet") - payoutFlag = flag.Int("faucet.amount", 1, "Number of Ethers to pay out per user request") - minutesFlag = flag.Int("faucet.minutes", 1440, "Number of minutes to wait between funding rounds") - tiersFlag = flag.Int("faucet.tiers", 3, "Number of funding tiers to enable (x3 time, x2.5 funds)") - - accJSONFlag = flag.String("account.json", "", "Key json file to fund user requests with") - accPassFlag = flag.String("account.pass", "", "Decryption password to access faucet funds") - - captchaToken = flag.String("captcha.token", "", "Recaptcha site key to authenticate client side") - captchaSecret = flag.String("captcha.secret", "", "Recaptcha secret key to authenticate server side") - - noauthFlag = flag.Bool("noauth", false, "Enables funding requests without authentication") - logFlag = flag.Int("loglevel", 3, "Log level to use for Ethereum and the faucet") - - twitterTokenFlag = flag.String("twitter.token", "", "Bearer token to authenticate with the v2 Twitter API") - twitterTokenV1Flag = flag.String("twitter.token.v1", "", "Bearer token to authenticate with the v1.1 Twitter API") - - goerliFlag = flag.Bool("goerli", false, "Initializes the faucet with Görli network config") - sepoliaFlag = flag.Bool("sepolia", false, "Initializes the faucet with Sepolia network config") -) - -var ( - ether = new(big.Int).Exp(big.NewInt(10), big.NewInt(18), nil) -) - -//go:embed faucet.html -var websiteTmpl string - -func main() { - // Parse the flags and set up the logger to print everything requested - flag.Parse() - log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(*logFlag), log.StreamHandler(os.Stderr, log.TerminalFormat(true)))) - - // Construct the payout tiers - amounts := make([]string, *tiersFlag) - periods := make([]string, *tiersFlag) - for i := 0; i < *tiersFlag; i++ { - // Calculate the amount for the next tier and format it - amount := float64(*payoutFlag) * math.Pow(2.5, float64(i)) - amounts[i] = fmt.Sprintf("%s Ethers", strconv.FormatFloat(amount, 'f', -1, 64)) - if amount == 1 { - amounts[i] = strings.TrimSuffix(amounts[i], "s") - } - // Calculate the period for the next tier and format it - period := *minutesFlag * int(math.Pow(3, float64(i))) - periods[i] = fmt.Sprintf("%d mins", period) - if period%60 == 0 { - period /= 60 - periods[i] = fmt.Sprintf("%d hours", period) - - if period%24 == 0 { - period /= 24 - periods[i] = fmt.Sprintf("%d days", period) - } - } - if period == 1 { - periods[i] = strings.TrimSuffix(periods[i], "s") - } - } - website := new(bytes.Buffer) - err := template.Must(template.New("").Parse(websiteTmpl)).Execute(website, map[string]interface{}{ - "Network": *netnameFlag, - "Amounts": amounts, - "Periods": periods, - "Recaptcha": *captchaToken, - "NoAuth": *noauthFlag, - }) - if err != nil { - log.Crit("Failed to render the faucet template", "err", err) - } - // Load and parse the genesis block requested by the user - genesis, err := getGenesis(*genesisFlag, *goerliFlag, *sepoliaFlag) - if err != nil { - log.Crit("Failed to parse genesis config", "err", err) - } - // Convert the bootnodes to internal enode representations - var enodes []*enode.Node - for _, boot := range strings.Split(*bootFlag, ",") { - if url, err := enode.Parse(enode.ValidSchemes, boot); err == nil { - enodes = append(enodes, url) - } else { - log.Error("Failed to parse bootnode URL", "url", boot, "err", err) - } - } - // Load up the account key and decrypt its password - blob, err := os.ReadFile(*accPassFlag) - if err != nil { - log.Crit("Failed to read account password contents", "file", *accPassFlag, "err", err) - } - pass := strings.TrimSuffix(string(blob), "\n") - - ks := keystore.NewKeyStore(filepath.Join(os.Getenv("HOME"), ".faucet", "keys"), keystore.StandardScryptN, keystore.StandardScryptP) - if blob, err = os.ReadFile(*accJSONFlag); err != nil { - log.Crit("Failed to read account key contents", "file", *accJSONFlag, "err", err) - } - acc, err := ks.Import(blob, pass, pass) - if err != nil && err != keystore.ErrAccountAlreadyExists { - log.Crit("Failed to import faucet signer account", "err", err) - } - if err := ks.Unlock(acc, pass); err != nil { - log.Crit("Failed to unlock faucet signer account", "err", err) - } - // Assemble and start the faucet light service - faucet, err := newFaucet(genesis, *ethPortFlag, enodes, *netFlag, *statsFlag, ks, website.Bytes()) - if err != nil { - log.Crit("Failed to start faucet", "err", err) - } - defer faucet.close() - - if err := faucet.listenAndServe(*apiPortFlag); err != nil { - log.Crit("Failed to launch faucet API", "err", err) - } -} - -// request represents an accepted funding request. -type request struct { - Avatar string `json:"avatar"` // Avatar URL to make the UI nicer - Account common.Address `json:"account"` // Ethereum address being funded - Time time.Time `json:"time"` // Timestamp when the request was accepted - Tx *types.Transaction `json:"tx"` // Transaction funding the account -} - -// faucet represents a crypto faucet backed by an Ethereum light client. -type faucet struct { - config *params.ChainConfig // Chain configurations for signing - stack *node.Node // Ethereum protocol stack - client *ethclient.Client // Client connection to the Ethereum chain - index []byte // Index page to serve up on the web - - keystore *keystore.KeyStore // Keystore containing the single signer - account accounts.Account // Account funding user faucet requests - head *types.Header // Current head header of the faucet - balance *big.Int // Current balance of the faucet - nonce uint64 // Current pending nonce of the faucet - price *big.Int // Current gas price to issue funds with - - conns []*wsConn // Currently live websocket connections - timeouts map[string]time.Time // History of users and their funding timeouts - reqs []*request // Currently pending funding requests - update chan struct{} // Channel to signal request updates - - lock sync.RWMutex // Lock protecting the faucet's internals -} - -// wsConn wraps a websocket connection with a write mutex as the underlying -// websocket library does not synchronize access to the stream. -type wsConn struct { - conn *websocket.Conn - wlock sync.Mutex -} - -func newFaucet(genesis *core.Genesis, port int, enodes []*enode.Node, network uint64, stats string, ks *keystore.KeyStore, index []byte) (*faucet, error) { - // Assemble the raw devp2p protocol stack - git, _ := version.VCS() - stack, err := node.New(&node.Config{ - Name: "geth", - Version: params.VersionWithCommit(git.Commit, git.Date), - DataDir: filepath.Join(os.Getenv("HOME"), ".faucet"), - P2P: p2p.Config{ - NAT: nat.Any(), - NoDiscovery: true, - DiscoveryV5: true, - ListenAddr: fmt.Sprintf(":%d", port), - MaxPeers: 25, - BootstrapNodesV5: enodes, - }, - }) - if err != nil { - return nil, err - } - - // Assemble the Ethereum light client protocol - cfg := ethconfig.Defaults - cfg.SyncMode = downloader.LightSync - cfg.NetworkId = network - cfg.Genesis = genesis - utils.SetDNSDiscoveryDefaults(&cfg, genesis.ToBlock().Hash()) - - lesBackend, err := les.New(stack, &cfg) - if err != nil { - return nil, fmt.Errorf("failed to register the Ethereum service: %w", err) - } - - // Assemble the ethstats monitoring and reporting service' - if stats != "" { - if err := ethstats.New(stack, lesBackend.ApiBackend, lesBackend.Engine(), stats); err != nil { - return nil, err - } - } - // Boot up the client and ensure it connects to bootnodes - if err := stack.Start(); err != nil { - return nil, err - } - for _, boot := range enodes { - old, err := enode.Parse(enode.ValidSchemes, boot.String()) - if err == nil { - stack.Server().AddPeer(old) - } - } - // Attach to the client and retrieve and interesting metadatas - api := stack.Attach() - client := ethclient.NewClient(api) - - return &faucet{ - config: genesis.Config, - stack: stack, - client: client, - index: index, - keystore: ks, - account: ks.Accounts()[0], - timeouts: make(map[string]time.Time), - update: make(chan struct{}, 1), - }, nil -} - -// close terminates the Ethereum connection and tears down the faucet. -func (f *faucet) close() error { - return f.stack.Close() -} - -// listenAndServe registers the HTTP handlers for the faucet and boots it up -// for service user funding requests. -func (f *faucet) listenAndServe(port int) error { - go f.loop() - - http.HandleFunc("/", f.webHandler) - http.HandleFunc("/api", f.apiHandler) - return http.ListenAndServe(fmt.Sprintf(":%d", port), nil) -} - -// webHandler handles all non-api requests, simply flattening and returning the -// faucet website. -func (f *faucet) webHandler(w http.ResponseWriter, r *http.Request) { - w.Write(f.index) -} - -// apiHandler handles requests for Ether grants and transaction statuses. -func (f *faucet) apiHandler(w http.ResponseWriter, r *http.Request) { - upgrader := websocket.Upgrader{} - conn, err := upgrader.Upgrade(w, r, nil) - if err != nil { - return - } - - // Start tracking the connection and drop at the end - defer conn.Close() - - f.lock.Lock() - wsconn := &wsConn{conn: conn} - f.conns = append(f.conns, wsconn) - f.lock.Unlock() - - defer func() { - f.lock.Lock() - for i, c := range f.conns { - if c.conn == conn { - f.conns = append(f.conns[:i], f.conns[i+1:]...) - break - } - } - f.lock.Unlock() - }() - // Gather the initial stats from the network to report - var ( - head *types.Header - balance *big.Int - nonce uint64 - ) - for head == nil || balance == nil { - // Retrieve the current stats cached by the faucet - f.lock.RLock() - if f.head != nil { - head = types.CopyHeader(f.head) - } - if f.balance != nil { - balance = new(big.Int).Set(f.balance) - } - nonce = f.nonce - f.lock.RUnlock() - - if head == nil || balance == nil { - // Report the faucet offline until initial stats are ready - //lint:ignore ST1005 This error is to be displayed in the browser - if err = sendError(wsconn, errors.New("Faucet offline")); err != nil { - log.Warn("Failed to send faucet error to client", "err", err) - return - } - time.Sleep(3 * time.Second) - } - } - // Send over the initial stats and the latest header - f.lock.RLock() - reqs := f.reqs - f.lock.RUnlock() - if err = send(wsconn, map[string]interface{}{ - "funds": new(big.Int).Div(balance, ether), - "funded": nonce, - "peers": f.stack.Server().PeerCount(), - "requests": reqs, - }, 3*time.Second); err != nil { - log.Warn("Failed to send initial stats to client", "err", err) - return - } - if err = send(wsconn, head, 3*time.Second); err != nil { - log.Warn("Failed to send initial header to client", "err", err) - return - } - // Keep reading requests from the websocket until the connection breaks - for { - // Fetch the next funding request and validate against github - var msg struct { - URL string `json:"url"` - Tier uint `json:"tier"` - Captcha string `json:"captcha"` - } - if err = conn.ReadJSON(&msg); err != nil { - return - } - if !*noauthFlag && !strings.HasPrefix(msg.URL, "https://twitter.com/") && !strings.HasPrefix(msg.URL, "https://www.facebook.com/") { - if err = sendError(wsconn, errors.New("URL doesn't link to supported services")); err != nil { - log.Warn("Failed to send URL error to client", "err", err) - return - } - continue - } - if msg.Tier >= uint(*tiersFlag) { - //lint:ignore ST1005 This error is to be displayed in the browser - if err = sendError(wsconn, errors.New("Invalid funding tier requested")); err != nil { - log.Warn("Failed to send tier error to client", "err", err) - return - } - continue - } - log.Info("Faucet funds requested", "url", msg.URL, "tier", msg.Tier) - - // If captcha verifications are enabled, make sure we're not dealing with a robot - if *captchaToken != "" { - form := url.Values{} - form.Add("secret", *captchaSecret) - form.Add("response", msg.Captcha) - - res, err := http.PostForm("https://www.google.com/recaptcha/api/siteverify", form) - if err != nil { - if err = sendError(wsconn, err); err != nil { - log.Warn("Failed to send captcha post error to client", "err", err) - return - } - continue - } - var result struct { - Success bool `json:"success"` - Errors json.RawMessage `json:"error-codes"` - } - err = json.NewDecoder(res.Body).Decode(&result) - res.Body.Close() - if err != nil { - if err = sendError(wsconn, err); err != nil { - log.Warn("Failed to send captcha decode error to client", "err", err) - return - } - continue - } - if !result.Success { - log.Warn("Captcha verification failed", "err", string(result.Errors)) - //lint:ignore ST1005 it's funny and the robot won't mind - if err = sendError(wsconn, errors.New("Beep-bop, you're a robot!")); err != nil { - log.Warn("Failed to send captcha failure to client", "err", err) - return - } - continue - } - } - // Retrieve the Ethereum address to fund, the requesting user and a profile picture - var ( - id string - username string - avatar string - address common.Address - ) - switch { - case strings.HasPrefix(msg.URL, "https://twitter.com/"): - id, username, avatar, address, err = authTwitter(msg.URL, *twitterTokenV1Flag, *twitterTokenFlag) - case strings.HasPrefix(msg.URL, "https://www.facebook.com/"): - username, avatar, address, err = authFacebook(msg.URL) - id = username - case *noauthFlag: - username, avatar, address, err = authNoAuth(msg.URL) - id = username - default: - //lint:ignore ST1005 This error is to be displayed in the browser - err = errors.New("Something funky happened, please open an issue at https://github.com/ethereum/go-ethereum/issues") - } - if err != nil { - if err = sendError(wsconn, err); err != nil { - log.Warn("Failed to send prefix error to client", "err", err) - return - } - continue - } - log.Info("Faucet request valid", "url", msg.URL, "tier", msg.Tier, "user", username, "address", address) - - // Ensure the user didn't request funds too recently - f.lock.Lock() - var ( - fund bool - timeout time.Time - ) - if timeout = f.timeouts[id]; time.Now().After(timeout) { - // User wasn't funded recently, create the funding transaction - amount := new(big.Int).Mul(big.NewInt(int64(*payoutFlag)), ether) - amount = new(big.Int).Mul(amount, new(big.Int).Exp(big.NewInt(5), big.NewInt(int64(msg.Tier)), nil)) - amount = new(big.Int).Div(amount, new(big.Int).Exp(big.NewInt(2), big.NewInt(int64(msg.Tier)), nil)) - - tx := types.NewTransaction(f.nonce+uint64(len(f.reqs)), address, amount, 21000, f.price, nil) - signed, err := f.keystore.SignTx(f.account, tx, f.config.ChainID) - if err != nil { - f.lock.Unlock() - if err = sendError(wsconn, err); err != nil { - log.Warn("Failed to send transaction creation error to client", "err", err) - return - } - continue - } - // Submit the transaction and mark as funded if successful - if err := f.client.SendTransaction(context.Background(), signed); err != nil { - f.lock.Unlock() - if err = sendError(wsconn, err); err != nil { - log.Warn("Failed to send transaction transmission error to client", "err", err) - return - } - continue - } - f.reqs = append(f.reqs, &request{ - Avatar: avatar, - Account: address, - Time: time.Now(), - Tx: signed, - }) - timeout := time.Duration(*minutesFlag*int(math.Pow(3, float64(msg.Tier)))) * time.Minute - grace := timeout / 288 // 24h timeout => 5m grace - - f.timeouts[id] = time.Now().Add(timeout - grace) - fund = true - } - f.lock.Unlock() - - // Send an error if too frequent funding, othewise a success - if !fund { - if err = sendError(wsconn, fmt.Errorf("%s left until next allowance", common.PrettyDuration(time.Until(timeout)))); err != nil { // nolint: gosimple - log.Warn("Failed to send funding error to client", "err", err) - return - } - continue - } - if err = sendSuccess(wsconn, fmt.Sprintf("Funding request accepted for %s into %s", username, address.Hex())); err != nil { - log.Warn("Failed to send funding success to client", "err", err) - return - } - select { - case f.update <- struct{}{}: - default: - } - } -} - -// refresh attempts to retrieve the latest header from the chain and extract the -// associated faucet balance and nonce for connectivity caching. -func (f *faucet) refresh(head *types.Header) error { - // Ensure a state update does not run for too long - ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) - defer cancel() - - // If no header was specified, use the current chain head - var err error - if head == nil { - if head, err = f.client.HeaderByNumber(ctx, nil); err != nil { - return err - } - } - // Retrieve the balance, nonce and gas price from the current head - var ( - balance *big.Int - nonce uint64 - price *big.Int - ) - if balance, err = f.client.BalanceAt(ctx, f.account.Address, head.Number); err != nil { - return err - } - if nonce, err = f.client.NonceAt(ctx, f.account.Address, head.Number); err != nil { - return err - } - if price, err = f.client.SuggestGasPrice(ctx); err != nil { - return err - } - // Everything succeeded, update the cached stats and eject old requests - f.lock.Lock() - f.head, f.balance = head, balance - f.price, f.nonce = price, nonce - for len(f.reqs) > 0 && f.reqs[0].Tx.Nonce() < f.nonce { - f.reqs = f.reqs[1:] - } - f.lock.Unlock() - - return nil -} - -// loop keeps waiting for interesting events and pushes them out to connected -// websockets. -func (f *faucet) loop() { - // Wait for chain events and push them to clients - heads := make(chan *types.Header, 16) - sub, err := f.client.SubscribeNewHead(context.Background(), heads) - if err != nil { - log.Crit("Failed to subscribe to head events", "err", err) - } - defer sub.Unsubscribe() - - // Start a goroutine to update the state from head notifications in the background - update := make(chan *types.Header) - - go func() { - for head := range update { - // New chain head arrived, query the current stats and stream to clients - timestamp := time.Unix(int64(head.Time), 0) - if time.Since(timestamp) > time.Hour { - log.Warn("Skipping faucet refresh, head too old", "number", head.Number, "hash", head.Hash(), "age", common.PrettyAge(timestamp)) - continue - } - if err := f.refresh(head); err != nil { - log.Warn("Failed to update faucet state", "block", head.Number, "hash", head.Hash(), "err", err) - continue - } - // Faucet state retrieved, update locally and send to clients - f.lock.RLock() - log.Info("Updated faucet state", "number", head.Number, "hash", head.Hash(), "age", common.PrettyAge(timestamp), "balance", f.balance, "nonce", f.nonce, "price", f.price) - - balance := new(big.Int).Div(f.balance, ether) - peers := f.stack.Server().PeerCount() - - for _, conn := range f.conns { - if err := send(conn, map[string]interface{}{ - "funds": balance, - "funded": f.nonce, - "peers": peers, - "requests": f.reqs, - }, time.Second); err != nil { - log.Warn("Failed to send stats to client", "err", err) - conn.conn.Close() - continue - } - if err := send(conn, head, time.Second); err != nil { - log.Warn("Failed to send header to client", "err", err) - conn.conn.Close() - } - } - f.lock.RUnlock() - } - }() - // Wait for various events and assing to the appropriate background threads - for { - select { - case head := <-heads: - // New head arrived, send if for state update if there's none running - select { - case update <- head: - default: - } - - case <-f.update: - // Pending requests updated, stream to clients - f.lock.RLock() - for _, conn := range f.conns { - if err := send(conn, map[string]interface{}{"requests": f.reqs}, time.Second); err != nil { - log.Warn("Failed to send requests to client", "err", err) - conn.conn.Close() - } - } - f.lock.RUnlock() - } - } -} - -// sends transmits a data packet to the remote end of the websocket, but also -// setting a write deadline to prevent waiting forever on the node. -func send(conn *wsConn, value interface{}, timeout time.Duration) error { - if timeout == 0 { - timeout = 60 * time.Second - } - conn.wlock.Lock() - defer conn.wlock.Unlock() - conn.conn.SetWriteDeadline(time.Now().Add(timeout)) - return conn.conn.WriteJSON(value) -} - -// sendError transmits an error to the remote end of the websocket, also setting -// the write deadline to 1 second to prevent waiting forever. -func sendError(conn *wsConn, err error) error { - return send(conn, map[string]string{"error": err.Error()}, time.Second) -} - -// sendSuccess transmits a success message to the remote end of the websocket, also -// setting the write deadline to 1 second to prevent waiting forever. -func sendSuccess(conn *wsConn, msg string) error { - return send(conn, map[string]string{"success": msg}, time.Second) -} - -// authTwitter tries to authenticate a faucet request using Twitter posts, returning -// the uniqueness identifier (user id/username), username, avatar URL and Ethereum address to fund on success. -func authTwitter(url string, tokenV1, tokenV2 string) (string, string, string, common.Address, error) { - // Ensure the user specified a meaningful URL, no fancy nonsense - parts := strings.Split(url, "/") - if len(parts) < 4 || parts[len(parts)-2] != "status" { - //lint:ignore ST1005 This error is to be displayed in the browser - return "", "", "", common.Address{}, errors.New("Invalid Twitter status URL") - } - // Strip any query parameters from the tweet id and ensure it's numeric - tweetID := strings.Split(parts[len(parts)-1], "?")[0] - if !regexp.MustCompile("^[0-9]+$").MatchString(tweetID) { - return "", "", "", common.Address{}, errors.New("Invalid Tweet URL") - } - // Twitter's API isn't really friendly with direct links. - // It is restricted to 300 queries / 15 minute with an app api key. - // Anything more will require read only authorization from the users and that we want to avoid. - - // If Twitter bearer token is provided, use the API, selecting the version - // the user would prefer (currently there's a limit of 1 v2 app / developer - // but unlimited v1.1 apps). - switch { - case tokenV1 != "": - return authTwitterWithTokenV1(tweetID, tokenV1) - case tokenV2 != "": - return authTwitterWithTokenV2(tweetID, tokenV2) - } - // Twitter API token isn't provided so we just load the public posts - // and scrape it for the Ethereum address and profile URL. We need to load - // the mobile page though since the main page loads tweet contents via JS. - url = strings.Replace(url, "https://twitter.com/", "https://mobile.twitter.com/", 1) - - res, err := http.Get(url) - if err != nil { - return "", "", "", common.Address{}, err - } - defer res.Body.Close() - - // Resolve the username from the final redirect, no intermediate junk - parts = strings.Split(res.Request.URL.String(), "/") - if len(parts) < 4 || parts[len(parts)-2] != "status" { - //lint:ignore ST1005 This error is to be displayed in the browser - return "", "", "", common.Address{}, errors.New("Invalid Twitter status URL") - } - username := parts[len(parts)-3] - - body, err := io.ReadAll(res.Body) - if err != nil { - return "", "", "", common.Address{}, err - } - address := common.HexToAddress(string(regexp.MustCompile("0x[0-9a-fA-F]{40}").Find(body))) - if address == (common.Address{}) { - //lint:ignore ST1005 This error is to be displayed in the browser - return "", "", "", common.Address{}, errors.New("No Ethereum address found to fund") - } - var avatar string - if parts = regexp.MustCompile(`src="([^"]+twimg\.com/profile_images[^"]+)"`).FindStringSubmatch(string(body)); len(parts) == 2 { - avatar = parts[1] - } - return username + "@twitter", username, avatar, address, nil -} - -// authTwitterWithTokenV1 tries to authenticate a faucet request using Twitter's v1 -// API, returning the user id, username, avatar URL and Ethereum address to fund on -// success. -func authTwitterWithTokenV1(tweetID string, token string) (string, string, string, common.Address, error) { - // Query the tweet details from Twitter - url := fmt.Sprintf("https://api.twitter.com/1.1/statuses/show.json?id=%s", tweetID) - req, err := http.NewRequest(http.MethodGet, url, nil) - if err != nil { - return "", "", "", common.Address{}, err - } - req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token)) - res, err := http.DefaultClient.Do(req) - if err != nil { - return "", "", "", common.Address{}, err - } - defer res.Body.Close() - - var result struct { - Text string `json:"text"` - User struct { - ID string `json:"id_str"` - Username string `json:"screen_name"` - Avatar string `json:"profile_image_url"` - } `json:"user"` - } - err = json.NewDecoder(res.Body).Decode(&result) - if err != nil { - return "", "", "", common.Address{}, err - } - address := common.HexToAddress(regexp.MustCompile("0x[0-9a-fA-F]{40}").FindString(result.Text)) - if address == (common.Address{}) { - //lint:ignore ST1005 This error is to be displayed in the browser - return "", "", "", common.Address{}, errors.New("No Ethereum address found to fund") - } - return result.User.ID + "@twitter", result.User.Username, result.User.Avatar, address, nil -} - -// authTwitterWithTokenV2 tries to authenticate a faucet request using Twitter's v2 -// API, returning the user id, username, avatar URL and Ethereum address to fund on -// success. -func authTwitterWithTokenV2(tweetID string, token string) (string, string, string, common.Address, error) { - // Query the tweet details from Twitter - url := fmt.Sprintf("https://api.twitter.com/2/tweets/%s?expansions=author_id&user.fields=profile_image_url", tweetID) - req, err := http.NewRequest(http.MethodGet, url, nil) - if err != nil { - return "", "", "", common.Address{}, err - } - req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token)) - res, err := http.DefaultClient.Do(req) - if err != nil { - return "", "", "", common.Address{}, err - } - defer res.Body.Close() - - var result struct { - Data struct { - AuthorID string `json:"author_id"` - Text string `json:"text"` - } `json:"data"` - Includes struct { - Users []struct { - ID string `json:"id"` - Username string `json:"username"` - Avatar string `json:"profile_image_url"` - } `json:"users"` - } `json:"includes"` - } - - err = json.NewDecoder(res.Body).Decode(&result) - if err != nil { - return "", "", "", common.Address{}, err - } - - address := common.HexToAddress(regexp.MustCompile("0x[0-9a-fA-F]{40}").FindString(result.Data.Text)) - if address == (common.Address{}) { - //lint:ignore ST1005 This error is to be displayed in the browser - return "", "", "", common.Address{}, errors.New("No Ethereum address found to fund") - } - return result.Data.AuthorID + "@twitter", result.Includes.Users[0].Username, result.Includes.Users[0].Avatar, address, nil -} - -// authFacebook tries to authenticate a faucet request using Facebook posts, -// returning the username, avatar URL and Ethereum address to fund on success. -func authFacebook(url string) (string, string, common.Address, error) { - // Ensure the user specified a meaningful URL, no fancy nonsense - parts := strings.Split(strings.Split(url, "?")[0], "/") - if parts[len(parts)-1] == "" { - parts = parts[0 : len(parts)-1] - } - if len(parts) < 4 || parts[len(parts)-2] != "posts" { - //lint:ignore ST1005 This error is to be displayed in the browser - return "", "", common.Address{}, errors.New("Invalid Facebook post URL") - } - username := parts[len(parts)-3] - - // Facebook's Graph API isn't really friendly with direct links. Still, we don't - // want to do ask read permissions from users, so just load the public posts and - // scrape it for the Ethereum address and profile URL. - // - // Facebook recently changed their desktop webpage to use AJAX for loading post - // content, so switch over to the mobile site for now. Will probably end up having - // to use the API eventually. - crawl := strings.Replace(url, "www.facebook.com", "m.facebook.com", 1) - - res, err := http.Get(crawl) - if err != nil { - return "", "", common.Address{}, err - } - defer res.Body.Close() - - body, err := io.ReadAll(res.Body) - if err != nil { - return "", "", common.Address{}, err - } - address := common.HexToAddress(string(regexp.MustCompile("0x[0-9a-fA-F]{40}").Find(body))) - if address == (common.Address{}) { - //lint:ignore ST1005 This error is to be displayed in the browser - return "", "", common.Address{}, errors.New("No Ethereum address found to fund. Please check the post URL and verify that it can be viewed publicly.") - } - var avatar string - if parts = regexp.MustCompile(`src="([^"]+fbcdn\.net[^"]+)"`).FindStringSubmatch(string(body)); len(parts) == 2 { - avatar = parts[1] - } - return username + "@facebook", avatar, address, nil -} - -// authNoAuth tries to interpret a faucet request as a plain Ethereum address, -// without actually performing any remote authentication. This mode is prone to -// Byzantine attack, so only ever use for truly private networks. -func authNoAuth(url string) (string, string, common.Address, error) { - address := common.HexToAddress(regexp.MustCompile("0x[0-9a-fA-F]{40}").FindString(url)) - if address == (common.Address{}) { - //lint:ignore ST1005 This error is to be displayed in the browser - return "", "", common.Address{}, errors.New("No Ethereum address found to fund") - } - return address.Hex() + "@noauth", "", address, nil -} - -// getGenesis returns a genesis based on input args -func getGenesis(genesisFlag string, goerliFlag bool, sepoliaFlag bool) (*core.Genesis, error) { - switch { - case genesisFlag != "": - var genesis core.Genesis - err := common.LoadJSON(genesisFlag, &genesis) - return &genesis, err - case goerliFlag: - return core.DefaultGoerliGenesisBlock(), nil - case sepoliaFlag: - return core.DefaultSepoliaGenesisBlock(), nil - default: - return nil, errors.New("no genesis flag provided") - } -} diff --git a/cmd/faucet/faucet.html b/cmd/faucet/faucet.html deleted file mode 100644 index dad5ad84f2..0000000000 --- a/cmd/faucet/faucet.html +++ /dev/null @@ -1,233 +0,0 @@ - - - - - - - - {{.Network}}: Authenticated Faucet - - - - - - - - - - - - - -
-
-
-
-

{{.Network}} Authenticated Faucet

-
-
-
-
-
- - - - - -
{{if .Recaptcha}} -
{{end}} -
-
-
-
-
-
-
-
-
- - - - - -
peers blocks Ethers funded
-
-
-
-
-
-
-

How does this work?

-

This Ether faucet is running on the {{.Network}} network. To prevent malicious actors from exhausting all available funds or accumulating enough Ether to mount long running spam attacks, requests are tied to common 3rd party social network accounts. Anyone having a Twitter or Facebook account may request funds within the permitted limits.

-
-
-
To request funds via Twitter, make a tweet with your Ethereum address pasted into the contents (surrounding text doesn't matter).
Copy-paste the tweets URL into the above input box and fire away!
- -
-
To request funds via Facebook, publish a new public post with your Ethereum address embedded into the content (surrounding text doesn't matter).
Copy-paste the posts URL into the above input box and fire away!
- - {{if .NoAuth}} -
-
To request funds without authentication, simply copy-paste your Ethereum address into the above input box (surrounding text doesn't matter) and fire away.
This mode is susceptible to Byzantine attacks. Only use for debugging or private networks!
- {{end}} -
-

You can track the current pending requests below the input field to see how much you have to wait until your turn comes.

- {{if .Recaptcha}}The faucet is running invisible reCaptcha protection against bots.{{end}} -
-
-
-
- - {{if .Recaptcha}} - {{end}} - - diff --git a/cmd/faucet/faucet_test.go b/cmd/faucet/faucet_test.go deleted file mode 100644 index 39b62c4939..0000000000 --- a/cmd/faucet/faucet_test.go +++ /dev/null @@ -1,46 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of go-ethereum. -// -// go-ethereum is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// go-ethereum is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with go-ethereum. If not, see . - -package main - -import ( - "testing" - - "github.com/ethereum/go-ethereum/common" -) - -func TestFacebook(t *testing.T) { - t.Parallel() - // TODO: Remove facebook auth or implement facebook api, which seems to require an API key - t.Skipf("The facebook access is flaky, needs to be reimplemented or removed") - for _, tt := range []struct { - url string - want common.Address - }{ - { - "https://www.facebook.com/fooz.gazonk/posts/2837228539847129", - common.HexToAddress("0xDeadDeaDDeaDbEefbEeFbEEfBeeFBeefBeeFbEEF"), - }, - } { - _, _, gotAddress, err := authFacebook(tt.url) - if err != nil { - t.Fatal(err) - } - if gotAddress != tt.want { - t.Fatalf("address wrong, have %v want %v", gotAddress, tt.want) - } - } -} diff --git a/cmd/geth/config.go b/cmd/geth/config.go index 027dac7bd6..5f52f1df54 100644 --- a/cmd/geth/config.go +++ b/cmd/geth/config.go @@ -35,7 +35,6 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/eth/catalyst" - "github.com/ethereum/go-ethereum/eth/downloader" "github.com/ethereum/go-ethereum/eth/ethconfig" "github.com/ethereum/go-ethereum/internal/ethapi" "github.com/ethereum/go-ethereum/internal/flags" @@ -222,7 +221,7 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) { } catalyst.RegisterSimulatedBeaconAPIs(stack, simBeacon) stack.RegisterLifecycle(simBeacon) - } else if cfg.Eth.SyncMode != downloader.LightSync { + } else { err := catalyst.Register(stack, eth) if err != nil { utils.Fatalf("failed to register catalyst service: %v", err) diff --git a/cmd/geth/les_test.go b/cmd/geth/les_test.go deleted file mode 100644 index 98c8a12dc6..0000000000 --- a/cmd/geth/les_test.go +++ /dev/null @@ -1,206 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of go-ethereum. -// -// go-ethereum is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// go-ethereum is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with go-ethereum. If not, see . - -package main - -import ( - "context" - "fmt" - "os" - "path/filepath" - "runtime" - "strings" - "sync/atomic" - "testing" - "time" - - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/rpc" -) - -type gethrpc struct { - name string - rpc *rpc.Client - geth *testgeth - nodeInfo *p2p.NodeInfo -} - -func (g *gethrpc) killAndWait() { - g.geth.Kill() - g.geth.WaitExit() -} - -func (g *gethrpc) callRPC(result interface{}, method string, args ...interface{}) { - if err := g.rpc.Call(&result, method, args...); err != nil { - g.geth.Fatalf("callRPC %v: %v", method, err) - } -} - -func (g *gethrpc) addPeer(peer *gethrpc) { - g.geth.Logf("%v.addPeer(%v)", g.name, peer.name) - enode := peer.getNodeInfo().Enode - peerCh := make(chan *p2p.PeerEvent) - sub, err := g.rpc.Subscribe(context.Background(), "admin", peerCh, "peerEvents") - if err != nil { - g.geth.Fatalf("subscribe %v: %v", g.name, err) - } - defer sub.Unsubscribe() - g.callRPC(nil, "admin_addPeer", enode) - dur := 14 * time.Second - timeout := time.After(dur) - select { - case ev := <-peerCh: - g.geth.Logf("%v received event: type=%v, peer=%v", g.name, ev.Type, ev.Peer) - case err := <-sub.Err(): - g.geth.Fatalf("%v sub error: %v", g.name, err) - case <-timeout: - g.geth.Error("timeout adding peer after", dur) - } -} - -// Use this function instead of `g.nodeInfo` directly -func (g *gethrpc) getNodeInfo() *p2p.NodeInfo { - if g.nodeInfo != nil { - return g.nodeInfo - } - g.nodeInfo = &p2p.NodeInfo{} - g.callRPC(&g.nodeInfo, "admin_nodeInfo") - return g.nodeInfo -} - -// ipcEndpoint resolves an IPC endpoint based on a configured value, taking into -// account the set data folders as well as the designated platform we're currently -// running on. -func ipcEndpoint(ipcPath, datadir string) string { - // On windows we can only use plain top-level pipes - if runtime.GOOS == "windows" { - if strings.HasPrefix(ipcPath, `\\.\pipe\`) { - return ipcPath - } - return `\\.\pipe\` + ipcPath - } - // Resolve names into the data directory full paths otherwise - if filepath.Base(ipcPath) == ipcPath { - if datadir == "" { - return filepath.Join(os.TempDir(), ipcPath) - } - return filepath.Join(datadir, ipcPath) - } - return ipcPath -} - -// nextIPC ensures that each ipc pipe gets a unique name. -// On linux, it works well to use ipc pipes all over the filesystem (in datadirs), -// but windows require pipes to sit in "\\.\pipe\". Therefore, to run several -// nodes simultaneously, we need to distinguish between them, which we do by -// the pipe filename instead of folder. -var nextIPC atomic.Uint32 - -func startGethWithIpc(t *testing.T, name string, args ...string) *gethrpc { - ipcName := fmt.Sprintf("geth-%d.ipc", nextIPC.Add(1)) - args = append([]string{"--networkid=42", "--port=0", "--authrpc.port", "0", "--ipcpath", ipcName}, args...) - t.Logf("Starting %v with rpc: %v", name, args) - - g := &gethrpc{ - name: name, - geth: runGeth(t, args...), - } - ipcpath := ipcEndpoint(ipcName, g.geth.Datadir) - // We can't know exactly how long geth will take to start, so we try 10 - // times over a 5 second period. - var err error - for i := 0; i < 10; i++ { - time.Sleep(500 * time.Millisecond) - if g.rpc, err = rpc.Dial(ipcpath); err == nil { - return g - } - } - t.Fatalf("%v rpc connect to %v: %v", name, ipcpath, err) - return nil -} - -func initGeth(t *testing.T) string { - args := []string{"--networkid=42", "init", "./testdata/clique.json"} - t.Logf("Initializing geth: %v ", args) - g := runGeth(t, args...) - datadir := g.Datadir - g.WaitExit() - return datadir -} - -func startLightServer(t *testing.T) *gethrpc { - datadir := initGeth(t) - t.Logf("Importing keys to geth") - runGeth(t, "account", "import", "--datadir", datadir, "--password", "./testdata/password.txt", "--lightkdf", "./testdata/key.prv").WaitExit() - account := "0x02f0d131f1f97aef08aec6e3291b957d9efe7105" - server := startGethWithIpc(t, "lightserver", "--allow-insecure-unlock", "--datadir", datadir, "--password", "./testdata/password.txt", "--unlock", account, "--miner.etherbase=0x02f0d131f1f97aef08aec6e3291b957d9efe7105", "--mine", "--light.serve=100", "--light.maxpeers=1", "--discv4=false", "--nat=extip:127.0.0.1", "--verbosity=4") - return server -} - -func startClient(t *testing.T, name string) *gethrpc { - datadir := initGeth(t) - return startGethWithIpc(t, name, "--datadir", datadir, "--discv4=false", "--syncmode=light", "--nat=extip:127.0.0.1", "--verbosity=4") -} - -func TestPriorityClient(t *testing.T) { - t.Parallel() - lightServer := startLightServer(t) - defer lightServer.killAndWait() - - // Start client and add lightServer as peer - freeCli := startClient(t, "freeCli") - defer freeCli.killAndWait() - freeCli.addPeer(lightServer) - - var peers []*p2p.PeerInfo - freeCli.callRPC(&peers, "admin_peers") - if len(peers) != 1 { - t.Errorf("Expected: # of client peers == 1, actual: %v", len(peers)) - return - } - - // Set up priority client, get its nodeID, increase its balance on the lightServer - prioCli := startClient(t, "prioCli") - defer prioCli.killAndWait() - // 3_000_000_000 once we move to Go 1.13 - tokens := uint64(3000000000) - lightServer.callRPC(nil, "les_addBalance", prioCli.getNodeInfo().ID, tokens) - prioCli.addPeer(lightServer) - - // Check if priority client is actually syncing and the regular client got kicked out - prioCli.callRPC(&peers, "admin_peers") - if len(peers) != 1 { - t.Errorf("Expected: # of prio peers == 1, actual: %v", len(peers)) - } - - nodes := map[string]*gethrpc{ - lightServer.getNodeInfo().ID: lightServer, - freeCli.getNodeInfo().ID: freeCli, - prioCli.getNodeInfo().ID: prioCli, - } - time.Sleep(1 * time.Second) - lightServer.callRPC(&peers, "admin_peers") - peersWithNames := make(map[string]string) - for _, p := range peers { - peersWithNames[nodes[p.ID].name] = p.ID - } - if _, freeClientFound := peersWithNames[freeCli.name]; freeClientFound { - t.Error("client is still a peer of lightServer", peersWithNames) - } - if _, prioClientFound := peersWithNames[prioCli.name]; !prioClientFound { - t.Error("prio client is not among lightServer peers", peersWithNames) - } -} diff --git a/cmd/geth/main.go b/cmd/geth/main.go index d1b14b81cd..e5a17e45cf 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -62,7 +62,7 @@ var ( utils.MinFreeDiskSpaceFlag, utils.KeyStoreDirFlag, utils.ExternalSignerFlag, - utils.NoUSBFlag, + utils.NoUSBFlag, // deprecated utils.USBFlag, utils.SmartCardDaemonPathFlag, utils.OverrideCancun, @@ -87,24 +87,24 @@ var ( utils.ExitWhenSyncedFlag, utils.GCModeFlag, utils.SnapshotFlag, - utils.TxLookupLimitFlag, + utils.TxLookupLimitFlag, // deprecated utils.TransactionHistoryFlag, utils.StateHistoryFlag, - utils.LightServeFlag, - utils.LightIngressFlag, - utils.LightEgressFlag, - utils.LightMaxPeersFlag, - utils.LightNoPruneFlag, + utils.LightServeFlag, // deprecated + utils.LightIngressFlag, // deprecated + utils.LightEgressFlag, // deprecated + utils.LightMaxPeersFlag, // deprecated + utils.LightNoPruneFlag, // deprecated utils.LightKDFFlag, - utils.LightNoSyncServeFlag, + utils.LightNoSyncServeFlag, // deprecated utils.EthRequiredBlocksFlag, - utils.LegacyWhitelistFlag, + utils.LegacyWhitelistFlag, // deprecated utils.BloomFilterSizeFlag, utils.CacheFlag, utils.CacheDatabaseFlag, utils.CacheTrieFlag, - utils.CacheTrieJournalFlag, - utils.CacheTrieRejournalFlag, + utils.CacheTrieJournalFlag, // deprecated + utils.CacheTrieRejournalFlag, // deprecated utils.CacheGCFlag, utils.CacheSnapshotFlag, utils.CacheNoPrefetchFlag, @@ -127,7 +127,7 @@ var ( utils.NoDiscoverFlag, utils.DiscoveryV4Flag, utils.DiscoveryV5Flag, - utils.LegacyDiscoveryV5Flag, + utils.LegacyDiscoveryV5Flag, // deprecated utils.NetrestrictFlag, utils.NodeKeyFileFlag, utils.NodeKeyHexFlag, @@ -306,7 +306,7 @@ func prepare(ctx *cli.Context) { log.Info("Starting Geth on Ethereum mainnet...") } // If we're a full node on mainnet without --cache specified, bump default cache allowance - if ctx.String(utils.SyncModeFlag.Name) != "light" && !ctx.IsSet(utils.CacheFlag.Name) && !ctx.IsSet(utils.NetworkIdFlag.Name) { + if !ctx.IsSet(utils.CacheFlag.Name) && !ctx.IsSet(utils.NetworkIdFlag.Name) { // Make sure we're not on any supported preconfigured testnet either if !ctx.IsSet(utils.HoleskyFlag.Name) && !ctx.IsSet(utils.SepoliaFlag.Name) && @@ -317,11 +317,6 @@ func prepare(ctx *cli.Context) { ctx.Set(utils.CacheFlag.Name, strconv.Itoa(4096)) } } - // If we're running a light client on any network, drop the cache to some meaningfully low amount - if ctx.String(utils.SyncModeFlag.Name) == "light" && !ctx.IsSet(utils.CacheFlag.Name) { - log.Info("Dropping default light client cache", "provided", ctx.Int(utils.CacheFlag.Name), "updated", 128) - ctx.Set(utils.CacheFlag.Name, strconv.Itoa(128)) - } // Start metrics export if enabled utils.SetupMetrics(ctx) diff --git a/cmd/geth/run_test.go b/cmd/geth/run_test.go index 2e03dc5eaa..1d32880325 100644 --- a/cmd/geth/run_test.go +++ b/cmd/geth/run_test.go @@ -55,6 +55,15 @@ func TestMain(m *testing.M) { os.Exit(m.Run()) } +func initGeth(t *testing.T) string { + args := []string{"--networkid=42", "init", "./testdata/clique.json"} + t.Logf("Initializing geth: %v ", args) + g := runGeth(t, args...) + datadir := g.Datadir + g.WaitExit() + return datadir +} + // spawns geth with the given command line args. If the args don't set --datadir, the // child g gets a temporary data directory. func runGeth(t *testing.T, args ...string) *testgeth { diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index 72a56e9c28..b49c7c36d5 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -57,7 +57,6 @@ import ( "github.com/ethereum/go-ethereum/graphql" "github.com/ethereum/go-ethereum/internal/ethapi" "github.com/ethereum/go-ethereum/internal/flags" - "github.com/ethereum/go-ethereum/les" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/metrics" "github.com/ethereum/go-ethereum/metrics/exp" @@ -255,7 +254,7 @@ var ( } SyncModeFlag = &flags.TextMarshalerFlag{ Name: "syncmode", - Usage: `Blockchain sync mode ("snap", "full" or "light")`, + Usage: `Blockchain sync mode ("snap" or "full")`, Value: &defaultSyncMode, Category: flags.StateCategory, } @@ -282,41 +281,6 @@ var ( Value: ethconfig.Defaults.TransactionHistory, Category: flags.StateCategory, } - // Light server and client settings - LightServeFlag = &cli.IntFlag{ - Name: "light.serve", - Usage: "Maximum percentage of time allowed for serving LES requests (multi-threaded processing allows values over 100)", - Value: ethconfig.Defaults.LightServ, - Category: flags.LightCategory, - } - LightIngressFlag = &cli.IntFlag{ - Name: "light.ingress", - Usage: "Incoming bandwidth limit for serving light clients (kilobytes/sec, 0 = unlimited)", - Value: ethconfig.Defaults.LightIngress, - Category: flags.LightCategory, - } - LightEgressFlag = &cli.IntFlag{ - Name: "light.egress", - Usage: "Outgoing bandwidth limit for serving light clients (kilobytes/sec, 0 = unlimited)", - Value: ethconfig.Defaults.LightEgress, - Category: flags.LightCategory, - } - LightMaxPeersFlag = &cli.IntFlag{ - Name: "light.maxpeers", - Usage: "Maximum number of light clients to serve, or light servers to attach to", - Value: ethconfig.Defaults.LightPeers, - Category: flags.LightCategory, - } - LightNoPruneFlag = &cli.BoolFlag{ - Name: "light.nopruning", - Usage: "Disable ancient light chain data pruning", - Category: flags.LightCategory, - } - LightNoSyncServeFlag = &cli.BoolFlag{ - Name: "light.nosyncserve", - Usage: "Enables serving light clients before syncing", - Category: flags.LightCategory, - } // Transaction pool settings TxPoolLocalsFlag = &cli.StringFlag{ Name: "txpool.locals", @@ -1224,25 +1188,25 @@ func setIPC(ctx *cli.Context, cfg *node.Config) { } } -// setLes configures the les server and ultra light client settings from the command line flags. +// setLes shows the deprecation warnings for LES flags. func setLes(ctx *cli.Context, cfg *ethconfig.Config) { if ctx.IsSet(LightServeFlag.Name) { - cfg.LightServ = ctx.Int(LightServeFlag.Name) + log.Warn("The light server has been deprecated, please remove this flag", "flag", LightServeFlag.Name) } if ctx.IsSet(LightIngressFlag.Name) { - cfg.LightIngress = ctx.Int(LightIngressFlag.Name) + log.Warn("The light server has been deprecated, please remove this flag", "flag", LightIngressFlag.Name) } if ctx.IsSet(LightEgressFlag.Name) { - cfg.LightEgress = ctx.Int(LightEgressFlag.Name) + log.Warn("The light server has been deprecated, please remove this flag", "flag", LightEgressFlag.Name) } if ctx.IsSet(LightMaxPeersFlag.Name) { - cfg.LightPeers = ctx.Int(LightMaxPeersFlag.Name) + log.Warn("The light server has been deprecated, please remove this flag", "flag", LightMaxPeersFlag.Name) } if ctx.IsSet(LightNoPruneFlag.Name) { - cfg.LightNoPrune = ctx.Bool(LightNoPruneFlag.Name) + log.Warn("The light server has been deprecated, please remove this flag", "flag", LightNoPruneFlag.Name) } if ctx.IsSet(LightNoSyncServeFlag.Name) { - cfg.LightNoSyncServe = ctx.Bool(LightNoSyncServeFlag.Name) + log.Warn("The light server has been deprecated, please remove this flag", "flag", LightNoSyncServeFlag.Name) } } @@ -1340,58 +1304,24 @@ func SetP2PConfig(ctx *cli.Context, cfg *p2p.Config) { setBootstrapNodes(ctx, cfg) setBootstrapNodesV5(ctx, cfg) - lightClient := ctx.String(SyncModeFlag.Name) == "light" - lightServer := (ctx.Int(LightServeFlag.Name) != 0) - - lightPeers := ctx.Int(LightMaxPeersFlag.Name) - if lightClient && !ctx.IsSet(LightMaxPeersFlag.Name) { - // dynamic default - for clients we use 1/10th of the default for servers - lightPeers /= 10 - } - if ctx.IsSet(MaxPeersFlag.Name) { cfg.MaxPeers = ctx.Int(MaxPeersFlag.Name) - if lightServer && !ctx.IsSet(LightMaxPeersFlag.Name) { - cfg.MaxPeers += lightPeers - } - } else { - if lightServer { - cfg.MaxPeers += lightPeers - } - if lightClient && ctx.IsSet(LightMaxPeersFlag.Name) && cfg.MaxPeers < lightPeers { - cfg.MaxPeers = lightPeers - } - } - if !(lightClient || lightServer) { - lightPeers = 0 } - ethPeers := cfg.MaxPeers - lightPeers - if lightClient { - ethPeers = 0 - } - log.Info("Maximum peer count", "ETH", ethPeers, "LES", lightPeers, "total", cfg.MaxPeers) + ethPeers := cfg.MaxPeers + log.Info("Maximum peer count", "ETH", ethPeers, "total", cfg.MaxPeers) if ctx.IsSet(MaxPendingPeersFlag.Name) { cfg.MaxPendingPeers = ctx.Int(MaxPendingPeersFlag.Name) } - if ctx.IsSet(NoDiscoverFlag.Name) || lightClient { + if ctx.IsSet(NoDiscoverFlag.Name) { cfg.NoDiscovery = true } - // Disallow --nodiscover when used in conjunction with light mode. - if (lightClient || lightServer) && ctx.Bool(NoDiscoverFlag.Name) { - Fatalf("Cannot use --" + NoDiscoverFlag.Name + " in light client or light server mode") - } CheckExclusive(ctx, DiscoveryV4Flag, NoDiscoverFlag) CheckExclusive(ctx, DiscoveryV5Flag, NoDiscoverFlag) cfg.DiscoveryV4 = ctx.Bool(DiscoveryV4Flag.Name) cfg.DiscoveryV5 = ctx.Bool(DiscoveryV5Flag.Name) - // If we're running a light client or server, force enable the v5 peer discovery. - if lightClient || lightServer { - cfg.DiscoveryV5 = true - } - if netrestrict := ctx.String(NetrestrictFlag.Name); netrestrict != "" { list, err := netutil.ParseNetlist(netrestrict) if err != nil { @@ -1496,12 +1426,7 @@ func SetDataDir(ctx *cli.Context, cfg *node.Config) { } } -func setGPO(ctx *cli.Context, cfg *gasprice.Config, light bool) { - // If we are running the light client, apply another group - // settings for gas oracle. - if light { - *cfg = ethconfig.LightClientGPO - } +func setGPO(ctx *cli.Context, cfg *gasprice.Config) { if ctx.IsSet(GpoBlocksFlag.Name) { cfg.Blocks = ctx.Int(GpoBlocksFlag.Name) } @@ -1650,12 +1575,11 @@ func CheckExclusive(ctx *cli.Context, args ...interface{}) { func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) { // Avoid conflicting network flags CheckExclusive(ctx, MainnetFlag, DeveloperFlag, GoerliFlag, SepoliaFlag, HoleskyFlag) - CheckExclusive(ctx, LightServeFlag, SyncModeFlag, "light") CheckExclusive(ctx, DeveloperFlag, ExternalSignerFlag) // Can't use both ephemeral unlocked and external signer // Set configurations from CLI flags setEtherbase(ctx, cfg) - setGPO(ctx, &cfg.GPO, ctx.String(SyncModeFlag.Name) == "light") + setGPO(ctx, &cfg.GPO) setTxPool(ctx, &cfg.TxPool) setMiner(ctx, &cfg.Miner) setRequiredBlocks(ctx, cfg) @@ -1734,9 +1658,6 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) { cfg.TransactionHistory = 0 log.Warn("Disabled transaction unindexing for archive node") } - if ctx.IsSet(LightServeFlag.Name) && cfg.TransactionHistory != 0 { - log.Warn("LES server cannot serve old transaction status and cannot connect below les/4 protocol version if transaction lookup index is limited") - } if ctx.IsSet(CacheFlag.Name) || ctx.IsSet(CacheTrieFlag.Name) { cfg.TrieCleanCache = ctx.Int(CacheFlag.Name) * ctx.Int(CacheTrieFlag.Name) / 100 } @@ -1913,9 +1834,6 @@ func SetDNSDiscoveryDefaults(cfg *ethconfig.Config, genesis common.Hash) { return // already set through flags/config } protocol := "all" - if cfg.SyncMode == downloader.LightSync { - protocol = "les" - } if url := params.KnownDNSNetwork(genesis, protocol); url != "" { cfg.EthDiscoveryURLs = []string{url} cfg.SnapDiscoveryURLs = cfg.EthDiscoveryURLs @@ -1923,27 +1841,12 @@ func SetDNSDiscoveryDefaults(cfg *ethconfig.Config, genesis common.Hash) { } // RegisterEthService adds an Ethereum client to the stack. -// The second return value is the full node instance, which may be nil if the -// node is running as a light client. +// The second return value is the full node instance. func RegisterEthService(stack *node.Node, cfg *ethconfig.Config) (ethapi.Backend, *eth.Ethereum) { - if cfg.SyncMode == downloader.LightSync { - backend, err := les.New(stack, cfg) - if err != nil { - Fatalf("Failed to register the Ethereum service: %v", err) - } - stack.RegisterAPIs(tracers.APIs(backend.ApiBackend)) - return backend.ApiBackend, nil - } backend, err := eth.New(stack, cfg) if err != nil { Fatalf("Failed to register the Ethereum service: %v", err) } - if cfg.LightServ > 0 { - _, err := les.NewLesServer(stack, backend, cfg) - if err != nil { - Fatalf("Failed to create the LES server: %v", err) - } - } stack.RegisterAPIs(tracers.APIs(backend.APIBackend)) return backend.APIBackend, backend } @@ -1965,13 +1868,12 @@ func RegisterGraphQLService(stack *node.Node, backend ethapi.Backend, filterSyst // RegisterFilterAPI adds the eth log filtering RPC API to the node. func RegisterFilterAPI(stack *node.Node, backend ethapi.Backend, ethcfg *ethconfig.Config) *filters.FilterSystem { - isLightClient := ethcfg.SyncMode == downloader.LightSync filterSystem := filters.NewFilterSystem(backend, filters.Config{ LogCacheSize: ethcfg.FilterLogCacheSize, }) stack.RegisterAPIs([]rpc.API{{ Namespace: "eth", - Service: filters.NewFilterAPI(filterSystem, isLightClient), + Service: filters.NewFilterAPI(filterSystem, false), }}) return filterSystem } diff --git a/cmd/utils/flags_legacy.go b/cmd/utils/flags_legacy.go index 6669ff176f..00237fecaf 100644 --- a/cmd/utils/flags_legacy.go +++ b/cmd/utils/flags_legacy.go @@ -39,6 +39,12 @@ var DeprecatedFlags = []cli.Flag{ CacheTrieRejournalFlag, LegacyDiscoveryV5Flag, TxLookupLimitFlag, + LightServeFlag, + LightIngressFlag, + LightEgressFlag, + LightMaxPeersFlag, + LightNoPruneFlag, + LightNoSyncServeFlag, } var ( @@ -77,6 +83,41 @@ var ( Value: ethconfig.Defaults.TransactionHistory, Category: flags.DeprecatedCategory, } + // Light server and client settings, Deprecated November 2023 + LightServeFlag = &cli.IntFlag{ + Name: "light.serve", + Usage: "Maximum percentage of time allowed for serving LES requests (deprecated)", + Value: ethconfig.Defaults.LightServ, + Category: flags.LightCategory, + } + LightIngressFlag = &cli.IntFlag{ + Name: "light.ingress", + Usage: "Incoming bandwidth limit for serving light clients (deprecated)", + Value: ethconfig.Defaults.LightIngress, + Category: flags.LightCategory, + } + LightEgressFlag = &cli.IntFlag{ + Name: "light.egress", + Usage: "Outgoing bandwidth limit for serving light clients (deprecated)", + Value: ethconfig.Defaults.LightEgress, + Category: flags.LightCategory, + } + LightMaxPeersFlag = &cli.IntFlag{ + Name: "light.maxpeers", + Usage: "Maximum number of light clients to serve, or light servers to attach to (deprecated)", + Value: ethconfig.Defaults.LightPeers, + Category: flags.LightCategory, + } + LightNoPruneFlag = &cli.BoolFlag{ + Name: "light.nopruning", + Usage: "Disable ancient light chain data pruning (deprecated)", + Category: flags.LightCategory, + } + LightNoSyncServeFlag = &cli.BoolFlag{ + Name: "light.nosyncserve", + Usage: "Enables serving light clients before syncing (deprecated)", + Category: flags.LightCategory, + } ) // showDeprecated displays deprecated flags that will be soon removed from the codebase. diff --git a/eth/backend.go b/eth/backend.go index 09559f0ac1..774ffaf248 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -108,7 +108,7 @@ type Ethereum struct { func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) { // Ensure configuration values are compatible and sane if config.SyncMode == downloader.LightSync { - return nil, errors.New("can't run eth.Ethereum in light sync mode, use les.LightEthereum") + return nil, errors.New("can't run eth.Ethereum in light sync mode, light mode has been deprecated") } if !config.SyncMode.IsValid() { return nil, fmt.Errorf("invalid sync mode %d", config.SyncMode) diff --git a/eth/ethconfig/config.go b/eth/ethconfig/config.go index 5e8f58efdb..ad664afb5b 100644 --- a/eth/ethconfig/config.go +++ b/eth/ethconfig/config.go @@ -46,16 +46,6 @@ var FullNodeGPO = gasprice.Config{ IgnorePrice: gasprice.DefaultIgnorePrice, } -// LightClientGPO contains default gasprice oracle settings for light client. -var LightClientGPO = gasprice.Config{ - Blocks: 2, - Percentile: 60, - MaxHeaderHistory: 300, - MaxBlockHistory: 5, - MaxPrice: gasprice.DefaultMaxPrice, - IgnorePrice: gasprice.DefaultIgnorePrice, -} - // Defaults contains default settings for use on the Ethereum main net. var Defaults = Config{ SyncMode: downloader.SnapSync, diff --git a/ethstats/ethstats.go b/ethstats/ethstats.go index 84a6722806..75d0faac54 100644 --- a/ethstats/ethstats.go +++ b/ethstats/ethstats.go @@ -38,7 +38,6 @@ import ( "github.com/ethereum/go-ethereum/core/types" ethproto "github.com/ethereum/go-ethereum/eth/protocols/eth" "github.com/ethereum/go-ethereum/event" - "github.com/ethereum/go-ethereum/les" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/miner" "github.com/ethereum/go-ethereum/node" @@ -486,7 +485,7 @@ func (s *Service) login(conn *connWrapper) error { if info := infos.Protocols["eth"]; info != nil { network = fmt.Sprintf("%d", info.(*ethproto.NodeInfo).Network) } else { - network = fmt.Sprintf("%d", infos.Protocols["les"].(*les.NodeInfo).Network) + return errors.New("no eth protocol available") } auth := &authMsg{ ID: s.node, diff --git a/les/api.go b/les/api.go deleted file mode 100644 index e8490f7b0f..0000000000 --- a/les/api.go +++ /dev/null @@ -1,349 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "errors" - "fmt" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - vfs "github.com/ethereum/go-ethereum/les/vflux/server" - "github.com/ethereum/go-ethereum/p2p/enode" -) - -var errUnknownBenchmarkType = errors.New("unknown benchmark type") - -// LightServerAPI provides an API to access the LES light server. -type LightServerAPI struct { - server *LesServer - defaultPosFactors, defaultNegFactors vfs.PriceFactors -} - -// NewLightServerAPI creates a new LES light server API. -func NewLightServerAPI(server *LesServer) *LightServerAPI { - return &LightServerAPI{ - server: server, - defaultPosFactors: defaultPosFactors, - defaultNegFactors: defaultNegFactors, - } -} - -// parseNode parses either an enode address a raw hex node id -func parseNode(node string) (enode.ID, error) { - if id, err := enode.ParseID(node); err == nil { - return id, nil - } - if node, err := enode.Parse(enode.ValidSchemes, node); err == nil { - return node.ID(), nil - } else { - return enode.ID{}, err - } -} - -// ServerInfo returns global server parameters -func (api *LightServerAPI) ServerInfo() map[string]interface{} { - res := make(map[string]interface{}) - res["minimumCapacity"] = api.server.minCapacity - res["maximumCapacity"] = api.server.maxCapacity - _, res["totalCapacity"] = api.server.clientPool.Limits() - _, res["totalConnectedCapacity"] = api.server.clientPool.Active() - res["priorityConnectedCapacity"] = 0 //TODO connect when token sale module is added - return res -} - -// ClientInfo returns information about clients listed in the ids list or matching the given tags -func (api *LightServerAPI) ClientInfo(nodes []string) map[enode.ID]map[string]interface{} { - var ids []enode.ID - for _, node := range nodes { - if id, err := parseNode(node); err == nil { - ids = append(ids, id) - } - } - - res := make(map[enode.ID]map[string]interface{}) - if len(ids) == 0 { - ids = api.server.peers.ids() - } - for _, id := range ids { - if peer := api.server.peers.peer(id); peer != nil { - res[id] = api.clientInfo(peer, peer.balance) - } else { - api.server.clientPool.BalanceOperation(id, "", func(balance vfs.AtomicBalanceOperator) { - res[id] = api.clientInfo(nil, balance) - }) - } - } - return res -} - -// PriorityClientInfo returns information about clients with a positive balance -// in the given ID range (stop excluded). If stop is null then the iterator stops -// only at the end of the ID space. MaxCount limits the number of results returned. -// If maxCount limit is applied but there are more potential results then the ID -// of the next potential result is included in the map with an empty structure -// assigned to it. -func (api *LightServerAPI) PriorityClientInfo(start, stop enode.ID, maxCount int) map[enode.ID]map[string]interface{} { - res := make(map[enode.ID]map[string]interface{}) - ids := api.server.clientPool.GetPosBalanceIDs(start, stop, maxCount+1) - if len(ids) > maxCount { - res[ids[maxCount]] = make(map[string]interface{}) - ids = ids[:maxCount] - } - for _, id := range ids { - if peer := api.server.peers.peer(id); peer != nil { - res[id] = api.clientInfo(peer, peer.balance) - } else { - api.server.clientPool.BalanceOperation(id, "", func(balance vfs.AtomicBalanceOperator) { - res[id] = api.clientInfo(nil, balance) - }) - } - } - return res -} - -// clientInfo creates a client info data structure -func (api *LightServerAPI) clientInfo(peer *clientPeer, balance vfs.ReadOnlyBalance) map[string]interface{} { - info := make(map[string]interface{}) - pb, nb := balance.GetBalance() - info["isConnected"] = peer != nil - info["pricing/balance"] = pb - info["priority"] = pb != 0 - // cb := api.server.clientPool.ndb.getCurrencyBalance(id) - // info["pricing/currency"] = cb.amount - if peer != nil { - info["connectionTime"] = float64(mclock.Now()-peer.connectedAt) / float64(time.Second) - info["capacity"] = peer.getCapacity() - info["pricing/negBalance"] = nb - } - return info -} - -// setParams either sets the given parameters for a single connected client (if specified) -// or the default parameters applicable to clients connected in the future -func (api *LightServerAPI) setParams(params map[string]interface{}, client *clientPeer, posFactors, negFactors *vfs.PriceFactors) (updateFactors bool, err error) { - defParams := client == nil - for name, value := range params { - errValue := func() error { - return fmt.Errorf("invalid value for parameter '%s'", name) - } - setFactor := func(v *float64) { - if val, ok := value.(float64); ok && val >= 0 { - *v = val / float64(time.Second) - updateFactors = true - } else { - err = errValue() - } - } - - switch { - case name == "pricing/timeFactor": - setFactor(&posFactors.TimeFactor) - case name == "pricing/capacityFactor": - setFactor(&posFactors.CapacityFactor) - case name == "pricing/requestCostFactor": - setFactor(&posFactors.RequestFactor) - case name == "pricing/negative/timeFactor": - setFactor(&negFactors.TimeFactor) - case name == "pricing/negative/capacityFactor": - setFactor(&negFactors.CapacityFactor) - case name == "pricing/negative/requestCostFactor": - setFactor(&negFactors.RequestFactor) - case !defParams && name == "capacity": - if capacity, ok := value.(float64); ok && uint64(capacity) >= api.server.minCapacity { - _, err = api.server.clientPool.SetCapacity(client.Node(), uint64(capacity), 0, false) - // time factor recalculation is performed automatically by the balance tracker - } else { - err = errValue() - } - default: - if defParams { - err = fmt.Errorf("invalid default parameter '%s'", name) - } else { - err = fmt.Errorf("invalid client parameter '%s'", name) - } - } - if err != nil { - return - } - } - return -} - -// SetClientParams sets client parameters for all clients listed in the ids list -// or all connected clients if the list is empty -func (api *LightServerAPI) SetClientParams(nodes []string, params map[string]interface{}) error { - var err error - for _, node := range nodes { - var id enode.ID - if id, err = parseNode(node); err != nil { - return err - } - if peer := api.server.peers.peer(id); peer != nil { - posFactors, negFactors := peer.balance.GetPriceFactors() - update, e := api.setParams(params, peer, &posFactors, &negFactors) - if update { - peer.balance.SetPriceFactors(posFactors, negFactors) - } - if e != nil { - err = e - } - } else { - err = fmt.Errorf("client %064x is not connected", id) - } - } - return err -} - -// SetDefaultParams sets the default parameters applicable to clients connected in the future -func (api *LightServerAPI) SetDefaultParams(params map[string]interface{}) error { - update, err := api.setParams(params, nil, &api.defaultPosFactors, &api.defaultNegFactors) - if update { - api.server.clientPool.SetDefaultFactors(api.defaultPosFactors, api.defaultNegFactors) - } - return err -} - -// SetConnectedBias set the connection bias, which is applied to already connected clients -// So that already connected client won't be kicked out very soon and we can ensure all -// connected clients can have enough time to request or sync some data. -// When the input parameter `bias` < 0 (illegal), return error. -func (api *LightServerAPI) SetConnectedBias(bias time.Duration) error { - if bias < time.Duration(0) { - return fmt.Errorf("bias illegal: %v less than 0", bias) - } - api.server.clientPool.SetConnectedBias(bias) - return nil -} - -// AddBalance adds the given amount to the balance of a client if possible and returns -// the balance before and after the operation -func (api *LightServerAPI) AddBalance(node string, amount int64) (balance [2]uint64, err error) { - var id enode.ID - if id, err = parseNode(node); err != nil { - return - } - api.server.clientPool.BalanceOperation(id, "", func(nb vfs.AtomicBalanceOperator) { - balance[0], balance[1], err = nb.AddBalance(amount) - }) - return -} - -// Benchmark runs a request performance benchmark with a given set of measurement setups -// in multiple passes specified by passCount. The measurement time for each setup in each -// pass is specified in milliseconds by length. -// -// Note: measurement time is adjusted for each pass depending on the previous ones. -// Therefore a controlled total measurement time is achievable in multiple passes. -func (api *LightServerAPI) Benchmark(setups []map[string]interface{}, passCount, length int) ([]map[string]interface{}, error) { - benchmarks := make([]requestBenchmark, len(setups)) - for i, setup := range setups { - if t, ok := setup["type"].(string); ok { - getInt := func(field string, def int) int { - if value, ok := setup[field].(float64); ok { - return int(value) - } - return def - } - getBool := func(field string, def bool) bool { - if value, ok := setup[field].(bool); ok { - return value - } - return def - } - switch t { - case "header": - benchmarks[i] = &benchmarkBlockHeaders{ - amount: getInt("amount", 1), - skip: getInt("skip", 1), - byHash: getBool("byHash", false), - reverse: getBool("reverse", false), - } - case "body": - benchmarks[i] = &benchmarkBodiesOrReceipts{receipts: false} - case "receipts": - benchmarks[i] = &benchmarkBodiesOrReceipts{receipts: true} - case "proof": - benchmarks[i] = &benchmarkProofsOrCode{code: false} - case "code": - benchmarks[i] = &benchmarkProofsOrCode{code: true} - case "cht": - benchmarks[i] = &benchmarkHelperTrie{ - bloom: false, - reqCount: getInt("amount", 1), - } - case "bloom": - benchmarks[i] = &benchmarkHelperTrie{ - bloom: true, - reqCount: getInt("amount", 1), - } - case "txSend": - benchmarks[i] = &benchmarkTxSend{} - case "txStatus": - benchmarks[i] = &benchmarkTxStatus{} - default: - return nil, errUnknownBenchmarkType - } - } else { - return nil, errUnknownBenchmarkType - } - } - rs := api.server.handler.runBenchmark(benchmarks, passCount, time.Millisecond*time.Duration(length)) - result := make([]map[string]interface{}, len(setups)) - for i, r := range rs { - res := make(map[string]interface{}) - if r.err == nil { - res["totalCount"] = r.totalCount - res["avgTime"] = r.avgTime - res["maxInSize"] = r.maxInSize - res["maxOutSize"] = r.maxOutSize - } else { - res["error"] = r.err.Error() - } - result[i] = res - } - return result, nil -} - -// DebugAPI provides an API to debug LES light server functionality. -type DebugAPI struct { - server *LesServer -} - -// NewDebugAPI creates a new LES light server debug API. -func NewDebugAPI(server *LesServer) *DebugAPI { - return &DebugAPI{ - server: server, - } -} - -// FreezeClient forces a temporary client freeze which normally happens when the server is overloaded -func (api *DebugAPI) FreezeClient(node string) error { - var ( - id enode.ID - err error - ) - if id, err = parseNode(node); err != nil { - return err - } - if peer := api.server.peers.peer(id); peer != nil { - peer.freeze() - return nil - } else { - return fmt.Errorf("client %064x is not connected", id[:]) - } -} diff --git a/les/api_backend.go b/les/api_backend.go deleted file mode 100644 index 3e9dbadce8..0000000000 --- a/les/api_backend.go +++ /dev/null @@ -1,337 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "context" - "errors" - "math/big" - "time" - - "github.com/ethereum/go-ethereum" - "github.com/ethereum/go-ethereum/accounts" - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/consensus" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/bloombits" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/state" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/core/vm" - "github.com/ethereum/go-ethereum/eth/gasprice" - "github.com/ethereum/go-ethereum/eth/tracers" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/event" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/rpc" -) - -type LesApiBackend struct { - extRPCEnabled bool - allowUnprotectedTxs bool - eth *LightEthereum - gpo *gasprice.Oracle -} - -func (b *LesApiBackend) ChainConfig() *params.ChainConfig { - return b.eth.chainConfig -} - -func (b *LesApiBackend) CurrentBlock() *types.Header { - return b.eth.BlockChain().CurrentHeader() -} - -func (b *LesApiBackend) SetHead(number uint64) { - b.eth.blockchain.SetHead(number) -} - -func (b *LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) { - // Return the latest current as the pending one since there - // is no pending notion in the light client. TODO(rjl493456442) - // unify the behavior of `HeaderByNumber` and `PendingBlockAndReceipts`. - if number == rpc.PendingBlockNumber { - return b.eth.blockchain.CurrentHeader(), nil - } - if number == rpc.LatestBlockNumber { - return b.eth.blockchain.CurrentHeader(), nil - } - return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(number)) -} - -func (b *LesApiBackend) HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) { - if blockNr, ok := blockNrOrHash.Number(); ok { - return b.HeaderByNumber(ctx, blockNr) - } - if hash, ok := blockNrOrHash.Hash(); ok { - header, err := b.HeaderByHash(ctx, hash) - if err != nil { - return nil, err - } - if header == nil { - return nil, errors.New("header for hash not found") - } - if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash { - return nil, errors.New("hash is not currently canonical") - } - return header, nil - } - return nil, errors.New("invalid arguments; neither block nor hash specified") -} - -func (b *LesApiBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) { - return b.eth.blockchain.GetHeaderByHash(hash), nil -} - -func (b *LesApiBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) { - header, err := b.HeaderByNumber(ctx, number) - if header == nil || err != nil { - return nil, err - } - return b.BlockByHash(ctx, header.Hash()) -} - -func (b *LesApiBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) { - return b.eth.blockchain.GetBlockByHash(ctx, hash) -} - -func (b *LesApiBackend) BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) { - if blockNr, ok := blockNrOrHash.Number(); ok { - return b.BlockByNumber(ctx, blockNr) - } - if hash, ok := blockNrOrHash.Hash(); ok { - block, err := b.BlockByHash(ctx, hash) - if err != nil { - return nil, err - } - if block == nil { - return nil, errors.New("header found, but block body is missing") - } - if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(block.NumberU64()) != hash { - return nil, errors.New("hash is not currently canonical") - } - return block, nil - } - return nil, errors.New("invalid arguments; neither block nor hash specified") -} - -func (b *LesApiBackend) GetBody(ctx context.Context, hash common.Hash, number rpc.BlockNumber) (*types.Body, error) { - return light.GetBody(ctx, b.eth.odr, hash, uint64(number)) -} - -func (b *LesApiBackend) PendingBlockAndReceipts() (*types.Block, types.Receipts) { - return nil, nil -} - -func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) { - header, err := b.HeaderByNumber(ctx, number) - if err != nil { - return nil, nil, err - } - if header == nil { - return nil, nil, errors.New("header not found") - } - return light.NewState(ctx, header, b.eth.odr), header, nil -} - -func (b *LesApiBackend) StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) { - if blockNr, ok := blockNrOrHash.Number(); ok { - return b.StateAndHeaderByNumber(ctx, blockNr) - } - if hash, ok := blockNrOrHash.Hash(); ok { - header := b.eth.blockchain.GetHeaderByHash(hash) - if header == nil { - return nil, nil, errors.New("header for hash not found") - } - if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash { - return nil, nil, errors.New("hash is not currently canonical") - } - return light.NewState(ctx, header, b.eth.odr), header, nil - } - return nil, nil, errors.New("invalid arguments; neither block nor hash specified") -} - -func (b *LesApiBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) { - if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil { - return light.GetBlockReceipts(ctx, b.eth.odr, hash, *number) - } - return nil, nil -} - -func (b *LesApiBackend) GetLogs(ctx context.Context, hash common.Hash, number uint64) ([][]*types.Log, error) { - return light.GetBlockLogs(ctx, b.eth.odr, hash, number) -} - -func (b *LesApiBackend) GetTd(ctx context.Context, hash common.Hash) *big.Int { - if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil { - return b.eth.blockchain.GetTdOdr(ctx, hash, *number) - } - return nil -} - -func (b *LesApiBackend) GetEVM(ctx context.Context, msg *core.Message, state *state.StateDB, header *types.Header, vmConfig *vm.Config, blockCtx *vm.BlockContext) (*vm.EVM, func() error) { - if vmConfig == nil { - vmConfig = new(vm.Config) - } - txContext := core.NewEVMTxContext(msg) - context := core.NewEVMBlockContext(header, b.eth.blockchain, nil) - if blockCtx != nil { - context = *blockCtx - } - return vm.NewEVM(context, txContext, state, b.eth.chainConfig, *vmConfig), state.Error -} - -func (b *LesApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error { - return b.eth.txPool.Add(ctx, signedTx) -} - -func (b *LesApiBackend) RemoveTx(txHash common.Hash) { - b.eth.txPool.RemoveTx(txHash) -} - -func (b *LesApiBackend) GetPoolTransactions() (types.Transactions, error) { - return b.eth.txPool.GetTransactions() -} - -func (b *LesApiBackend) GetPoolTransaction(txHash common.Hash) *types.Transaction { - return b.eth.txPool.GetTransaction(txHash) -} - -func (b *LesApiBackend) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) { - return light.GetTransaction(ctx, b.eth.odr, txHash) -} - -func (b *LesApiBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) { - return b.eth.txPool.GetNonce(ctx, addr) -} - -func (b *LesApiBackend) Stats() (pending int, queued int) { - return b.eth.txPool.Stats(), 0 -} - -func (b *LesApiBackend) TxPoolContent() (map[common.Address][]*types.Transaction, map[common.Address][]*types.Transaction) { - return b.eth.txPool.Content() -} - -func (b *LesApiBackend) TxPoolContentFrom(addr common.Address) ([]*types.Transaction, []*types.Transaction) { - return b.eth.txPool.ContentFrom(addr) -} - -func (b *LesApiBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription { - return b.eth.txPool.SubscribeNewTxsEvent(ch) -} - -func (b *LesApiBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription { - return b.eth.blockchain.SubscribeChainEvent(ch) -} - -func (b *LesApiBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription { - return b.eth.blockchain.SubscribeChainHeadEvent(ch) -} - -func (b *LesApiBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription { - return b.eth.blockchain.SubscribeChainSideEvent(ch) -} - -func (b *LesApiBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription { - return b.eth.blockchain.SubscribeLogsEvent(ch) -} - -func (b *LesApiBackend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription { - return event.NewSubscription(func(quit <-chan struct{}) error { - <-quit - return nil - }) -} - -func (b *LesApiBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription { - return b.eth.blockchain.SubscribeRemovedLogsEvent(ch) -} - -func (b *LesApiBackend) SyncProgress() ethereum.SyncProgress { - return ethereum.SyncProgress{} -} - -func (b *LesApiBackend) ProtocolVersion() int { - return b.eth.LesVersion() + 10000 -} - -func (b *LesApiBackend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) { - return b.gpo.SuggestTipCap(ctx) -} - -func (b *LesApiBackend) FeeHistory(ctx context.Context, blockCount uint64, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (firstBlock *big.Int, reward [][]*big.Int, baseFee []*big.Int, gasUsedRatio []float64, err error) { - return b.gpo.FeeHistory(ctx, blockCount, lastBlock, rewardPercentiles) -} - -func (b *LesApiBackend) ChainDb() ethdb.Database { - return b.eth.chainDb -} - -func (b *LesApiBackend) AccountManager() *accounts.Manager { - return b.eth.accountManager -} - -func (b *LesApiBackend) ExtRPCEnabled() bool { - return b.extRPCEnabled -} - -func (b *LesApiBackend) UnprotectedAllowed() bool { - return b.allowUnprotectedTxs -} - -func (b *LesApiBackend) RPCGasCap() uint64 { - return b.eth.config.RPCGasCap -} - -func (b *LesApiBackend) RPCEVMTimeout() time.Duration { - return b.eth.config.RPCEVMTimeout -} - -func (b *LesApiBackend) RPCTxFeeCap() float64 { - return b.eth.config.RPCTxFeeCap -} - -func (b *LesApiBackend) BloomStatus() (uint64, uint64) { - if b.eth.bloomIndexer == nil { - return 0, 0 - } - sections, _, _ := b.eth.bloomIndexer.Sections() - return params.BloomBitsBlocksClient, sections -} - -func (b *LesApiBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) { - for i := 0; i < bloomFilterThreads; i++ { - go session.Multiplex(bloomRetrievalBatch, bloomRetrievalWait, b.eth.bloomRequests) - } -} - -func (b *LesApiBackend) Engine() consensus.Engine { - return b.eth.engine -} - -func (b *LesApiBackend) CurrentHeader() *types.Header { - return b.eth.blockchain.CurrentHeader() -} - -func (b *LesApiBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, readOnly bool, preferDisk bool) (*state.StateDB, tracers.StateReleaseFunc, error) { - return b.eth.stateAtBlock(ctx, block, reexec) -} - -func (b *LesApiBackend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (*core.Message, vm.BlockContext, *state.StateDB, tracers.StateReleaseFunc, error) { - return b.eth.stateAtTransaction(ctx, block, txIndex, reexec) -} diff --git a/les/api_test.go b/les/api_test.go deleted file mode 100644 index 484c95504c..0000000000 --- a/les/api_test.go +++ /dev/null @@ -1,512 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "context" - crand "crypto/rand" - "errors" - "flag" - "math/rand" - "os" - "sync" - "sync/atomic" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/hexutil" - "github.com/ethereum/go-ethereum/eth" - "github.com/ethereum/go-ethereum/eth/downloader" - "github.com/ethereum/go-ethereum/eth/ethconfig" - "github.com/ethereum/go-ethereum/les/flowcontrol" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/node" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/simulations" - "github.com/ethereum/go-ethereum/p2p/simulations/adapters" - "github.com/ethereum/go-ethereum/rpc" - "github.com/mattn/go-colorable" -) - -// Additional command line flags for the test binary. -var ( - loglevel = flag.Int("loglevel", 0, "verbosity of logs") - simAdapter = flag.String("adapter", "exec", "type of simulation: sim|socket|exec|docker") -) - -func TestMain(m *testing.M) { - flag.Parse() - log.PrintOrigins(true) - log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(*loglevel), log.StreamHandler(colorable.NewColorableStderr(), log.TerminalFormat(true)))) - // register the Delivery service which will run as a devp2p - // protocol when using the exec adapter - adapters.RegisterLifecycles(services) - os.Exit(m.Run()) -} - -// This test is not meant to be a part of the automatic testing process because it -// runs for a long time and also requires a large database in order to do a meaningful -// request performance test. When testServerDataDir is empty, the test is skipped. - -const ( - testServerDataDir = "" // should always be empty on the master branch - testServerCapacity = 200 - testMaxClients = 10 - testTolerance = 0.1 - minRelCap = 0.2 -) - -func TestCapacityAPI3(t *testing.T) { - testCapacityAPI(t, 3) -} - -func TestCapacityAPI6(t *testing.T) { - testCapacityAPI(t, 6) -} - -func TestCapacityAPI10(t *testing.T) { - testCapacityAPI(t, 10) -} - -// testCapacityAPI runs an end-to-end simulation test connecting one server with -// a given number of clients. It sets different priority capacities to all clients -// except a randomly selected one which runs in free client mode. All clients send -// similar requests at the maximum allowed rate and the test verifies whether the -// ratio of processed requests is close enough to the ratio of assigned capacities. -// Running multiple rounds with different settings ensures that changing capacity -// while connected and going back and forth between free and priority mode with -// the supplied API calls is also thoroughly tested. -func testCapacityAPI(t *testing.T, clientCount int) { - // Skip test if no data dir specified - if testServerDataDir == "" { - return - } - for !testSim(t, 1, clientCount, []string{testServerDataDir}, nil, func(ctx context.Context, net *simulations.Network, servers []*simulations.Node, clients []*simulations.Node) bool { - if len(servers) != 1 { - t.Fatalf("Invalid number of servers: %d", len(servers)) - } - server := servers[0] - - serverRpcClient, err := server.Client() - if err != nil { - t.Fatalf("Failed to obtain rpc client: %v", err) - } - headNum, headHash := getHead(ctx, t, serverRpcClient) - minCap, totalCap := getCapacityInfo(ctx, t, serverRpcClient) - testCap := totalCap * 3 / 4 - t.Logf("Server testCap: %d minCap: %d head number: %d head hash: %064x\n", testCap, minCap, headNum, headHash) - reqMinCap := uint64(float64(testCap) * minRelCap / (minRelCap + float64(len(clients)-1))) - if minCap > reqMinCap { - t.Fatalf("Minimum client capacity (%d) bigger than required minimum for this test (%d)", minCap, reqMinCap) - } - freeIdx := rand.Intn(len(clients)) - - clientRpcClients := make([]*rpc.Client, len(clients)) - for i, client := range clients { - var err error - clientRpcClients[i], err = client.Client() - if err != nil { - t.Fatalf("Failed to obtain rpc client: %v", err) - } - t.Log("connecting client", i) - if i != freeIdx { - setCapacity(ctx, t, serverRpcClient, client.ID(), testCap/uint64(len(clients))) - } - net.Connect(client.ID(), server.ID()) - - for { - select { - case <-ctx.Done(): - t.Fatalf("Timeout") - default: - } - num, hash := getHead(ctx, t, clientRpcClients[i]) - if num == headNum && hash == headHash { - t.Log("client", i, "synced") - break - } - time.Sleep(time.Millisecond * 200) - } - } - - var wg sync.WaitGroup - stop := make(chan struct{}) - - reqCount := make([]atomic.Uint64, len(clientRpcClients)) - - // Send light request like crazy. - for i, c := range clientRpcClients { - wg.Add(1) - i, c := i, c - go func() { - defer wg.Done() - - queue := make(chan struct{}, 100) - reqCount[i].Store(0) - for { - select { - case queue <- struct{}{}: - select { - case <-stop: - return - case <-ctx.Done(): - return - default: - wg.Add(1) - go func() { - ok := testRequest(ctx, t, c) - wg.Done() - <-queue - if ok { - if reqCount[i].Add(1)%10000 == 0 { - freezeClient(ctx, t, serverRpcClient, clients[i].ID()) - } - } - }() - } - case <-stop: - return - case <-ctx.Done(): - return - } - } - }() - } - - processedSince := func(start []uint64) []uint64 { - res := make([]uint64, len(reqCount)) - for i := range reqCount { - res[i] = reqCount[i].Load() - if start != nil { - res[i] -= start[i] - } - } - return res - } - - weights := make([]float64, len(clients)) - for c := 0; c < 5; c++ { - setCapacity(ctx, t, serverRpcClient, clients[freeIdx].ID(), minCap) - freeIdx = rand.Intn(len(clients)) - var sum float64 - for i := range clients { - if i == freeIdx { - weights[i] = 0 - } else { - weights[i] = rand.Float64()*(1-minRelCap) + minRelCap - } - sum += weights[i] - } - for i, client := range clients { - weights[i] *= float64(testCap-minCap-100) / sum - capacity := uint64(weights[i]) - if i != freeIdx && capacity < getCapacity(ctx, t, serverRpcClient, client.ID()) { - setCapacity(ctx, t, serverRpcClient, client.ID(), capacity) - } - } - setCapacity(ctx, t, serverRpcClient, clients[freeIdx].ID(), 0) - for i, client := range clients { - capacity := uint64(weights[i]) - if i != freeIdx && capacity > getCapacity(ctx, t, serverRpcClient, client.ID()) { - setCapacity(ctx, t, serverRpcClient, client.ID(), capacity) - } - } - weights[freeIdx] = float64(minCap) - for i := range clients { - weights[i] /= float64(testCap) - } - - time.Sleep(flowcontrol.DecParamDelay) - t.Log("Starting measurement") - t.Logf("Relative weights:") - for i := range clients { - t.Logf(" %f", weights[i]) - } - t.Log() - start := processedSince(nil) - for { - select { - case <-ctx.Done(): - t.Fatalf("Timeout") - default: - } - - _, totalCap = getCapacityInfo(ctx, t, serverRpcClient) - if totalCap < testCap { - t.Log("Total capacity underrun") - close(stop) - wg.Wait() - return false - } - - processed := processedSince(start) - var avg uint64 - t.Logf("Processed") - for i, p := range processed { - t.Logf(" %d", p) - processed[i] = uint64(float64(p) / weights[i]) - avg += processed[i] - } - avg /= uint64(len(processed)) - - if avg >= 10000 { - var maxDev float64 - for _, p := range processed { - dev := float64(int64(p-avg)) / float64(avg) - t.Logf(" %7.4f", dev) - if dev < 0 { - dev = -dev - } - if dev > maxDev { - maxDev = dev - } - } - t.Logf(" max deviation: %f totalCap: %d\n", maxDev, totalCap) - if maxDev <= testTolerance { - t.Log("success") - break - } - } else { - t.Log() - } - time.Sleep(time.Millisecond * 200) - } - } - - close(stop) - wg.Wait() - - for i := range reqCount { - t.Log("client", i, "processed", reqCount[i].Load()) - } - return true - }) { - t.Log("restarting test") - } -} - -func getHead(ctx context.Context, t *testing.T, client *rpc.Client) (uint64, common.Hash) { - res := make(map[string]interface{}) - if err := client.CallContext(ctx, &res, "eth_getBlockByNumber", "latest", false); err != nil { - t.Fatalf("Failed to obtain head block: %v", err) - } - numStr, ok := res["number"].(string) - if !ok { - t.Fatalf("RPC block number field invalid") - } - num, err := hexutil.DecodeUint64(numStr) - if err != nil { - t.Fatalf("Failed to decode RPC block number: %v", err) - } - hashStr, ok := res["hash"].(string) - if !ok { - t.Fatalf("RPC block number field invalid") - } - hash := common.HexToHash(hashStr) - return num, hash -} - -func testRequest(ctx context.Context, t *testing.T, client *rpc.Client) bool { - var res string - var addr common.Address - crand.Read(addr[:]) - c, cancel := context.WithTimeout(ctx, time.Second*12) - defer cancel() - err := client.CallContext(c, &res, "eth_getBalance", addr, "latest") - if err != nil { - t.Log("request error:", err) - } - return err == nil -} - -func freezeClient(ctx context.Context, t *testing.T, server *rpc.Client, clientID enode.ID) { - if err := server.CallContext(ctx, nil, "debug_freezeClient", clientID); err != nil { - t.Fatalf("Failed to freeze client: %v", err) - } -} - -func setCapacity(ctx context.Context, t *testing.T, server *rpc.Client, clientID enode.ID, cap uint64) { - params := make(map[string]interface{}) - params["capacity"] = cap - if err := server.CallContext(ctx, nil, "les_setClientParams", []enode.ID{clientID}, []string{}, params); err != nil { - t.Fatalf("Failed to set client capacity: %v", err) - } -} - -func getCapacity(ctx context.Context, t *testing.T, server *rpc.Client, clientID enode.ID) uint64 { - var res map[enode.ID]map[string]interface{} - if err := server.CallContext(ctx, &res, "les_clientInfo", []enode.ID{clientID}, []string{}); err != nil { - t.Fatalf("Failed to get client info: %v", err) - } - info, ok := res[clientID] - if !ok { - t.Fatalf("Missing client info") - } - v, ok := info["capacity"] - if !ok { - t.Fatalf("Missing field in client info: capacity") - } - vv, ok := v.(float64) - if !ok { - t.Fatalf("Failed to decode capacity field") - } - return uint64(vv) -} - -func getCapacityInfo(ctx context.Context, t *testing.T, server *rpc.Client) (minCap, totalCap uint64) { - var res map[string]interface{} - if err := server.CallContext(ctx, &res, "les_serverInfo"); err != nil { - t.Fatalf("Failed to query server info: %v", err) - } - decode := func(s string) uint64 { - v, ok := res[s] - if !ok { - t.Fatalf("Missing field in server info: %s", s) - } - vv, ok := v.(float64) - if !ok { - t.Fatalf("Failed to decode server info field: %s", s) - } - return uint64(vv) - } - minCap = decode("minimumCapacity") - totalCap = decode("totalCapacity") - return -} - -var services = adapters.LifecycleConstructors{ - "lesclient": newLesClientService, - "lesserver": newLesServerService, -} - -func NewNetwork() (*simulations.Network, func(), error) { - adapter, adapterTeardown, err := NewAdapter(*simAdapter, services) - if err != nil { - return nil, adapterTeardown, err - } - defaultService := "streamer" - net := simulations.NewNetwork(adapter, &simulations.NetworkConfig{ - ID: "0", - DefaultService: defaultService, - }) - teardown := func() { - adapterTeardown() - net.Shutdown() - } - return net, teardown, nil -} - -func NewAdapter(adapterType string, services adapters.LifecycleConstructors) (adapter adapters.NodeAdapter, teardown func(), err error) { - teardown = func() {} - switch adapterType { - case "sim": - adapter = adapters.NewSimAdapter(services) - // case "socket": - // adapter = adapters.NewSocketAdapter(services) - case "exec": - baseDir, err0 := os.MkdirTemp("", "les-test") - if err0 != nil { - return nil, teardown, err0 - } - teardown = func() { os.RemoveAll(baseDir) } - adapter = adapters.NewExecAdapter(baseDir) - /*case "docker": - adapter, err = adapters.NewDockerAdapter() - if err != nil { - return nil, teardown, err - }*/ - default: - return nil, teardown, errors.New("adapter needs to be one of sim, socket, exec, docker") - } - return adapter, teardown, nil -} - -func testSim(t *testing.T, serverCount, clientCount int, serverDir, clientDir []string, test func(ctx context.Context, net *simulations.Network, servers []*simulations.Node, clients []*simulations.Node) bool) bool { - net, teardown, err := NewNetwork() - defer teardown() - if err != nil { - t.Fatalf("Failed to create network: %v", err) - } - timeout := 1800 * time.Second - ctx, cancel := context.WithTimeout(context.Background(), timeout) - defer cancel() - - servers := make([]*simulations.Node, serverCount) - clients := make([]*simulations.Node, clientCount) - - for i := range clients { - clientconf := adapters.RandomNodeConfig() - clientconf.Lifecycles = []string{"lesclient"} - if len(clientDir) == clientCount { - clientconf.DataDir = clientDir[i] - } - client, err := net.NewNodeWithConfig(clientconf) - if err != nil { - t.Fatalf("Failed to create client: %v", err) - } - clients[i] = client - } - - for i := range servers { - serverconf := adapters.RandomNodeConfig() - serverconf.Lifecycles = []string{"lesserver"} - if len(serverDir) == serverCount { - serverconf.DataDir = serverDir[i] - } - server, err := net.NewNodeWithConfig(serverconf) - if err != nil { - t.Fatalf("Failed to create server: %v", err) - } - servers[i] = server - } - - for _, client := range clients { - if err := net.Start(client.ID()); err != nil { - t.Fatalf("Failed to start client node: %v", err) - } - } - for _, server := range servers { - if err := net.Start(server.ID()); err != nil { - t.Fatalf("Failed to start server node: %v", err) - } - } - - return test(ctx, net, servers, clients) -} - -func newLesClientService(ctx *adapters.ServiceContext, stack *node.Node) (node.Lifecycle, error) { - config := ethconfig.Defaults - config.SyncMode = downloader.LightSync - return New(stack, &config) -} - -func newLesServerService(ctx *adapters.ServiceContext, stack *node.Node) (node.Lifecycle, error) { - config := ethconfig.Defaults - config.SyncMode = downloader.FullSync - config.LightServ = testServerCapacity - config.LightPeers = testMaxClients - ethereum, err := eth.New(stack, &config) - if err != nil { - return nil, err - } - _, err = NewLesServer(stack, ethereum, &config) - if err != nil { - return nil, err - } - return ethereum, nil -} diff --git a/les/benchmark.go b/les/benchmark.go deleted file mode 100644 index d1efa2f5d3..0000000000 --- a/les/benchmark.go +++ /dev/null @@ -1,351 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - crand "crypto/rand" - "encoding/binary" - "errors" - "math/big" - "math/rand" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/les/flowcontrol" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/rlp" -) - -// requestBenchmark is an interface for different randomized request generators -type requestBenchmark interface { - // init initializes the generator for generating the given number of randomized requests - init(h *serverHandler, count int) error - // request initiates sending a single request to the given peer - request(peer *serverPeer, index int) error -} - -// benchmarkBlockHeaders implements requestBenchmark -type benchmarkBlockHeaders struct { - amount, skip int - reverse, byHash bool - offset, randMax int64 - hashes []common.Hash -} - -func (b *benchmarkBlockHeaders) init(h *serverHandler, count int) error { - d := int64(b.amount-1) * int64(b.skip+1) - b.offset = 0 - b.randMax = h.blockchain.CurrentHeader().Number.Int64() + 1 - d - if b.randMax < 0 { - return errors.New("chain is too short") - } - if b.reverse { - b.offset = d - } - if b.byHash { - b.hashes = make([]common.Hash, count) - for i := range b.hashes { - b.hashes[i] = rawdb.ReadCanonicalHash(h.chainDb, uint64(b.offset+rand.Int63n(b.randMax))) - } - } - return nil -} - -func (b *benchmarkBlockHeaders) request(peer *serverPeer, index int) error { - if b.byHash { - return peer.requestHeadersByHash(0, b.hashes[index], b.amount, b.skip, b.reverse) - } - return peer.requestHeadersByNumber(0, uint64(b.offset+rand.Int63n(b.randMax)), b.amount, b.skip, b.reverse) -} - -// benchmarkBodiesOrReceipts implements requestBenchmark -type benchmarkBodiesOrReceipts struct { - receipts bool - hashes []common.Hash -} - -func (b *benchmarkBodiesOrReceipts) init(h *serverHandler, count int) error { - randMax := h.blockchain.CurrentHeader().Number.Int64() + 1 - b.hashes = make([]common.Hash, count) - for i := range b.hashes { - b.hashes[i] = rawdb.ReadCanonicalHash(h.chainDb, uint64(rand.Int63n(randMax))) - } - return nil -} - -func (b *benchmarkBodiesOrReceipts) request(peer *serverPeer, index int) error { - if b.receipts { - return peer.requestReceipts(0, []common.Hash{b.hashes[index]}) - } - return peer.requestBodies(0, []common.Hash{b.hashes[index]}) -} - -// benchmarkProofsOrCode implements requestBenchmark -type benchmarkProofsOrCode struct { - code bool - headHash common.Hash -} - -func (b *benchmarkProofsOrCode) init(h *serverHandler, count int) error { - b.headHash = h.blockchain.CurrentHeader().Hash() - return nil -} - -func (b *benchmarkProofsOrCode) request(peer *serverPeer, index int) error { - key := make([]byte, 32) - crand.Read(key) - if b.code { - return peer.requestCode(0, []CodeReq{{BHash: b.headHash, AccountAddress: key}}) - } - return peer.requestProofs(0, []ProofReq{{BHash: b.headHash, Key: key}}) -} - -// benchmarkHelperTrie implements requestBenchmark -type benchmarkHelperTrie struct { - bloom bool - reqCount int - sectionCount, headNum uint64 -} - -func (b *benchmarkHelperTrie) init(h *serverHandler, count int) error { - if b.bloom { - b.sectionCount, b.headNum, _ = h.server.bloomTrieIndexer.Sections() - } else { - b.sectionCount, _, _ = h.server.chtIndexer.Sections() - b.headNum = b.sectionCount*params.CHTFrequency - 1 - } - if b.sectionCount == 0 { - return errors.New("no processed sections available") - } - return nil -} - -func (b *benchmarkHelperTrie) request(peer *serverPeer, index int) error { - reqs := make([]HelperTrieReq, b.reqCount) - - if b.bloom { - bitIdx := uint16(rand.Intn(2048)) - for i := range reqs { - key := make([]byte, 10) - binary.BigEndian.PutUint16(key[:2], bitIdx) - binary.BigEndian.PutUint64(key[2:], uint64(rand.Int63n(int64(b.sectionCount)))) - reqs[i] = HelperTrieReq{Type: htBloomBits, TrieIdx: b.sectionCount - 1, Key: key} - } - } else { - for i := range reqs { - key := make([]byte, 8) - binary.BigEndian.PutUint64(key[:], uint64(rand.Int63n(int64(b.headNum)))) - reqs[i] = HelperTrieReq{Type: htCanonical, TrieIdx: b.sectionCount - 1, Key: key, AuxReq: htAuxHeader} - } - } - - return peer.requestHelperTrieProofs(0, reqs) -} - -// benchmarkTxSend implements requestBenchmark -type benchmarkTxSend struct { - txs types.Transactions -} - -func (b *benchmarkTxSend) init(h *serverHandler, count int) error { - key, _ := crypto.GenerateKey() - addr := crypto.PubkeyToAddress(key.PublicKey) - signer := types.LatestSigner(h.server.chainConfig) - b.txs = make(types.Transactions, count) - - for i := range b.txs { - data := make([]byte, txSizeCostLimit) - crand.Read(data) - tx, err := types.SignTx(types.NewTransaction(0, addr, new(big.Int), 0, new(big.Int), data), signer, key) - if err != nil { - panic(err) - } - b.txs[i] = tx - } - return nil -} - -func (b *benchmarkTxSend) request(peer *serverPeer, index int) error { - enc, _ := rlp.EncodeToBytes(types.Transactions{b.txs[index]}) - return peer.sendTxs(0, 1, enc) -} - -// benchmarkTxStatus implements requestBenchmark -type benchmarkTxStatus struct{} - -func (b *benchmarkTxStatus) init(h *serverHandler, count int) error { - return nil -} - -func (b *benchmarkTxStatus) request(peer *serverPeer, index int) error { - var hash common.Hash - crand.Read(hash[:]) - return peer.requestTxStatus(0, []common.Hash{hash}) -} - -// benchmarkSetup stores measurement data for a single benchmark type -type benchmarkSetup struct { - req requestBenchmark - totalCount int - totalTime, avgTime time.Duration - maxInSize, maxOutSize uint32 - err error -} - -// runBenchmark runs a benchmark cycle for all benchmark types in the specified -// number of passes -func (h *serverHandler) runBenchmark(benchmarks []requestBenchmark, passCount int, targetTime time.Duration) []*benchmarkSetup { - setup := make([]*benchmarkSetup, len(benchmarks)) - for i, b := range benchmarks { - setup[i] = &benchmarkSetup{req: b} - } - for i := 0; i < passCount; i++ { - log.Info("Running benchmark", "pass", i+1, "total", passCount) - todo := make([]*benchmarkSetup, len(benchmarks)) - copy(todo, setup) - for len(todo) > 0 { - // select a random element - index := rand.Intn(len(todo)) - next := todo[index] - todo[index] = todo[len(todo)-1] - todo = todo[:len(todo)-1] - - if next.err == nil { - // calculate request count - count := 50 - if next.totalTime > 0 { - count = int(uint64(next.totalCount) * uint64(targetTime) / uint64(next.totalTime)) - } - if err := h.measure(next, count); err != nil { - next.err = err - } - } - } - } - log.Info("Benchmark completed") - - for _, s := range setup { - if s.err == nil { - s.avgTime = s.totalTime / time.Duration(s.totalCount) - } - } - return setup -} - -// meteredPipe implements p2p.MsgReadWriter and remembers the largest single -// message size sent through the pipe -type meteredPipe struct { - rw p2p.MsgReadWriter - maxSize uint32 -} - -func (m *meteredPipe) ReadMsg() (p2p.Msg, error) { - return m.rw.ReadMsg() -} - -func (m *meteredPipe) WriteMsg(msg p2p.Msg) error { - if msg.Size > m.maxSize { - m.maxSize = msg.Size - } - return m.rw.WriteMsg(msg) -} - -// measure runs a benchmark for a single type in a single pass, with the given -// number of requests -func (h *serverHandler) measure(setup *benchmarkSetup, count int) error { - clientPipe, serverPipe := p2p.MsgPipe() - clientMeteredPipe := &meteredPipe{rw: clientPipe} - serverMeteredPipe := &meteredPipe{rw: serverPipe} - var id enode.ID - crand.Read(id[:]) - - peer1 := newServerPeer(lpv2, NetworkId, false, p2p.NewPeer(id, "client", nil), clientMeteredPipe) - peer2 := newClientPeer(lpv2, NetworkId, p2p.NewPeer(id, "server", nil), serverMeteredPipe) - peer2.announceType = announceTypeNone - peer2.fcCosts = make(requestCostTable) - c := &requestCosts{} - for code := range requests { - peer2.fcCosts[code] = c - } - peer2.fcParams = flowcontrol.ServerParams{BufLimit: 1, MinRecharge: 1} - peer2.fcClient = flowcontrol.NewClientNode(h.server.fcManager, peer2.fcParams) - defer peer2.fcClient.Disconnect() - - if err := setup.req.init(h, count); err != nil { - return err - } - - errCh := make(chan error, 10) - start := mclock.Now() - - go func() { - for i := 0; i < count; i++ { - if err := setup.req.request(peer1, i); err != nil { - errCh <- err - return - } - } - }() - go func() { - for i := 0; i < count; i++ { - if err := h.handleMsg(peer2, &sync.WaitGroup{}); err != nil { - errCh <- err - return - } - } - }() - go func() { - for i := 0; i < count; i++ { - msg, err := clientPipe.ReadMsg() - if err != nil { - errCh <- err - return - } - var i interface{} - msg.Decode(&i) - } - // at this point we can be sure that the other two - // goroutines finished successfully too - close(errCh) - }() - select { - case err := <-errCh: - if err != nil { - return err - } - case <-h.closeCh: - clientPipe.Close() - serverPipe.Close() - return errors.New("benchmark cancelled") - } - - setup.totalTime += time.Duration(mclock.Now() - start) - setup.totalCount += count - setup.maxInSize = clientMeteredPipe.maxSize - setup.maxOutSize = serverMeteredPipe.maxSize - clientPipe.Close() - serverPipe.Close() - return nil -} diff --git a/les/bloombits.go b/les/bloombits.go deleted file mode 100644 index a98524ce2e..0000000000 --- a/les/bloombits.go +++ /dev/null @@ -1,75 +0,0 @@ -// Copyright 2017 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "time" - - "github.com/ethereum/go-ethereum/common/bitutil" - "github.com/ethereum/go-ethereum/light" -) - -const ( - // bloomServiceThreads is the number of goroutines used globally by an Ethereum - // instance to service bloombits lookups for all running filters. - bloomServiceThreads = 16 - - // bloomFilterThreads is the number of goroutines used locally per filter to - // multiplex requests onto the global servicing goroutines. - bloomFilterThreads = 3 - - // bloomRetrievalBatch is the maximum number of bloom bit retrievals to service - // in a single batch. - bloomRetrievalBatch = 16 - - // bloomRetrievalWait is the maximum time to wait for enough bloom bit requests - // to accumulate request an entire batch (avoiding hysteresis). - bloomRetrievalWait = time.Microsecond * 100 -) - -// startBloomHandlers starts a batch of goroutines to accept bloom bit database -// retrievals from possibly a range of filters and serving the data to satisfy. -func (eth *LightEthereum) startBloomHandlers(sectionSize uint64) { - for i := 0; i < bloomServiceThreads; i++ { - go func() { - defer eth.wg.Done() - for { - select { - case <-eth.closeCh: - return - - case request := <-eth.bloomRequests: - task := <-request - task.Bitsets = make([][]byte, len(task.Sections)) - compVectors, err := light.GetBloomBits(task.Context, eth.odr, task.Bit, task.Sections) - if err == nil { - for i := range task.Sections { - if blob, err := bitutil.DecompressBytes(compVectors[i], int(sectionSize/8)); err == nil { - task.Bitsets[i] = blob - } else { - task.Error = err - } - } - } else { - task.Error = err - } - request <- task - } - } - }() - } -} diff --git a/les/client.go b/les/client.go deleted file mode 100644 index be5e9fd564..0000000000 --- a/les/client.go +++ /dev/null @@ -1,377 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// Package les implements the Light Ethereum Subprotocol. -package les - -import ( - "errors" - "strings" - "time" - - "github.com/ethereum/go-ethereum/accounts" - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/hexutil" - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/consensus" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/bloombits" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/eth/ethconfig" - "github.com/ethereum/go-ethereum/eth/gasprice" - "github.com/ethereum/go-ethereum/event" - "github.com/ethereum/go-ethereum/internal/ethapi" - "github.com/ethereum/go-ethereum/internal/shutdowncheck" - "github.com/ethereum/go-ethereum/les/vflux" - vfc "github.com/ethereum/go-ethereum/les/vflux/client" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/node" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/rlp" - "github.com/ethereum/go-ethereum/rpc" - "github.com/ethereum/go-ethereum/trie" -) - -type LightEthereum struct { - lesCommons - - peers *serverPeerSet - reqDist *requestDistributor - retriever *retrieveManager - odr *LesOdr - relay *lesTxRelay - handler *clientHandler - txPool *light.TxPool - blockchain *light.LightChain - serverPool *vfc.ServerPool - serverPoolIterator enode.Iterator - merger *consensus.Merger - - bloomRequests chan chan *bloombits.Retrieval // Channel receiving bloom data retrieval requests - bloomIndexer *core.ChainIndexer // Bloom indexer operating during block imports - - ApiBackend *LesApiBackend - eventMux *event.TypeMux - engine consensus.Engine - accountManager *accounts.Manager - netRPCService *ethapi.NetAPI - - p2pServer *p2p.Server - p2pConfig *p2p.Config - udpEnabled bool - - shutdownTracker *shutdowncheck.ShutdownTracker // Tracks if and when the node has shutdown ungracefully -} - -// New creates an instance of the light client. -func New(stack *node.Node, config *ethconfig.Config) (*LightEthereum, error) { - chainDb, err := stack.OpenDatabase("lightchaindata", config.DatabaseCache, config.DatabaseHandles, "eth/db/chaindata/", false) - if err != nil { - return nil, err - } - lesDb, err := stack.OpenDatabase("les.client", 0, 0, "eth/db/lesclient/", false) - if err != nil { - return nil, err - } - var overrides core.ChainOverrides - if config.OverrideCancun != nil { - overrides.OverrideCancun = config.OverrideCancun - } - if config.OverrideVerkle != nil { - overrides.OverrideVerkle = config.OverrideVerkle - } - triedb := trie.NewDatabase(chainDb, trie.HashDefaults) - chainConfig, genesisHash, genesisErr := core.SetupGenesisBlockWithOverride(chainDb, triedb, config.Genesis, &overrides) - if _, isCompat := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !isCompat { - return nil, genesisErr - } - engine, err := ethconfig.CreateConsensusEngine(chainConfig, chainDb) - if err != nil { - return nil, err - } - log.Info("") - log.Info(strings.Repeat("-", 153)) - for _, line := range strings.Split(chainConfig.Description(), "\n") { - log.Info(line) - } - log.Info(strings.Repeat("-", 153)) - log.Info("") - - peers := newServerPeerSet() - merger := consensus.NewMerger(chainDb) - leth := &LightEthereum{ - lesCommons: lesCommons{ - genesis: genesisHash, - config: config, - chainConfig: chainConfig, - iConfig: light.DefaultClientIndexerConfig, - chainDb: chainDb, - lesDb: lesDb, - closeCh: make(chan struct{}), - }, - peers: peers, - eventMux: stack.EventMux(), - reqDist: newRequestDistributor(peers, &mclock.System{}), - accountManager: stack.AccountManager(), - merger: merger, - engine: engine, - bloomRequests: make(chan chan *bloombits.Retrieval), - bloomIndexer: core.NewBloomIndexer(chainDb, params.BloomBitsBlocksClient, params.HelperTrieConfirmations), - p2pServer: stack.Server(), - p2pConfig: &stack.Config().P2P, - udpEnabled: stack.Config().P2P.DiscoveryV5, - shutdownTracker: shutdowncheck.NewShutdownTracker(chainDb), - } - - var prenegQuery vfc.QueryFunc - if leth.udpEnabled { - prenegQuery = leth.prenegQuery - } - leth.serverPool, leth.serverPoolIterator = vfc.NewServerPool(lesDb, []byte("serverpool:"), time.Second, prenegQuery, &mclock.System{}, nil, requestList) - leth.serverPool.AddMetrics(suggestedTimeoutGauge, totalValueGauge, serverSelectableGauge, serverConnectedGauge, sessionValueMeter, serverDialedMeter) - - leth.retriever = newRetrieveManager(peers, leth.reqDist, leth.serverPool.GetTimeout) - leth.relay = newLesTxRelay(peers, leth.retriever) - - leth.odr = NewLesOdr(chainDb, light.DefaultClientIndexerConfig, leth.peers, leth.retriever) - leth.chtIndexer = light.NewChtIndexer(chainDb, leth.odr, params.CHTFrequency, params.HelperTrieConfirmations, config.LightNoPrune) - leth.bloomTrieIndexer = light.NewBloomTrieIndexer(chainDb, leth.odr, params.BloomBitsBlocksClient, params.BloomTrieFrequency, config.LightNoPrune) - leth.odr.SetIndexers(leth.chtIndexer, leth.bloomTrieIndexer, leth.bloomIndexer) - - // Note: NewLightChain adds the trusted checkpoint so it needs an ODR with - // indexers already set but not started yet - if leth.blockchain, err = light.NewLightChain(leth.odr, leth.chainConfig, leth.engine); err != nil { - return nil, err - } - leth.chainReader = leth.blockchain - leth.txPool = light.NewTxPool(leth.chainConfig, leth.blockchain, leth.relay) - - // Note: AddChildIndexer starts the update process for the child - leth.bloomIndexer.AddChildIndexer(leth.bloomTrieIndexer) - leth.chtIndexer.Start(leth.blockchain) - leth.bloomIndexer.Start(leth.blockchain) - - // Rewind the chain in case of an incompatible config upgrade. - if compat, ok := genesisErr.(*params.ConfigCompatError); ok { - log.Warn("Rewinding chain to upgrade configuration", "err", compat) - if compat.RewindToTime > 0 { - leth.blockchain.SetHeadWithTimestamp(compat.RewindToTime) - } else { - leth.blockchain.SetHead(compat.RewindToBlock) - } - rawdb.WriteChainConfig(chainDb, genesisHash, chainConfig) - } - - leth.ApiBackend = &LesApiBackend{stack.Config().ExtRPCEnabled(), stack.Config().AllowUnprotectedTxs, leth, nil} - gpoParams := config.GPO - if gpoParams.Default == nil { - gpoParams.Default = config.Miner.GasPrice - } - leth.ApiBackend.gpo = gasprice.NewOracle(leth.ApiBackend, gpoParams) - - leth.handler = newClientHandler(leth) - leth.netRPCService = ethapi.NewNetAPI(leth.p2pServer, leth.config.NetworkId) - - // Register the backend on the node - stack.RegisterAPIs(leth.APIs()) - stack.RegisterProtocols(leth.Protocols()) - stack.RegisterLifecycle(leth) - - // Successful startup; push a marker and check previous unclean shutdowns. - leth.shutdownTracker.MarkStartup() - - return leth, nil -} - -// VfluxRequest sends a batch of requests to the given node through discv5 UDP TalkRequest and returns the responses -func (s *LightEthereum) VfluxRequest(n *enode.Node, reqs vflux.Requests) vflux.Replies { - if !s.udpEnabled { - return nil - } - reqsEnc, _ := rlp.EncodeToBytes(&reqs) - repliesEnc, _ := s.p2pServer.DiscV5.TalkRequest(s.serverPool.DialNode(n), "vfx", reqsEnc) - var replies vflux.Replies - if len(repliesEnc) == 0 || rlp.DecodeBytes(repliesEnc, &replies) != nil { - return nil - } - return replies -} - -// vfxVersion returns the version number of the "les" service subdomain of the vflux UDP -// service, as advertised in the ENR record -func (s *LightEthereum) vfxVersion(n *enode.Node) uint { - if n.Seq() == 0 { - var err error - if !s.udpEnabled { - return 0 - } - if n, err = s.p2pServer.DiscV5.RequestENR(n); n != nil && err == nil && n.Seq() != 0 { - s.serverPool.Persist(n) - } else { - return 0 - } - } - - var les []rlp.RawValue - if err := n.Load(enr.WithEntry("les", &les)); err != nil || len(les) < 1 { - return 0 - } - var version uint - rlp.DecodeBytes(les[0], &version) // Ignore additional fields (for forward compatibility). - return version -} - -// prenegQuery sends a capacity query to the given server node to determine whether -// a connection slot is immediately available -func (s *LightEthereum) prenegQuery(n *enode.Node) int { - if s.vfxVersion(n) < 1 { - // UDP query not supported, always try TCP connection - return 1 - } - - var requests vflux.Requests - requests.Add("les", vflux.CapacityQueryName, vflux.CapacityQueryReq{ - Bias: 180, - AddTokens: []vflux.IntOrInf{{}}, - }) - replies := s.VfluxRequest(n, requests) - var cqr vflux.CapacityQueryReply - if replies.Get(0, &cqr) != nil || len(cqr) != 1 { // Note: Get returns an error if replies is nil - return -1 - } - if cqr[0] > 0 { - return 1 - } - return 0 -} - -type LightDummyAPI struct{} - -// Etherbase is the address that mining rewards will be sent to -func (s *LightDummyAPI) Etherbase() (common.Address, error) { - return common.Address{}, errors.New("mining is not supported in light mode") -} - -// Coinbase is the address that mining rewards will be sent to (alias for Etherbase) -func (s *LightDummyAPI) Coinbase() (common.Address, error) { - return common.Address{}, errors.New("mining is not supported in light mode") -} - -// Hashrate returns the POW hashrate -func (s *LightDummyAPI) Hashrate() hexutil.Uint { - return 0 -} - -// Mining returns an indication if this node is currently mining. -func (s *LightDummyAPI) Mining() bool { - return false -} - -// APIs returns the collection of RPC services the ethereum package offers. -// NOTE, some of these services probably need to be moved to somewhere else. -func (s *LightEthereum) APIs() []rpc.API { - apis := ethapi.GetAPIs(s.ApiBackend) - apis = append(apis, s.engine.APIs(s.BlockChain().HeaderChain())...) - return append(apis, []rpc.API{ - { - Namespace: "eth", - Service: &LightDummyAPI{}, - }, { - Namespace: "net", - Service: s.netRPCService, - }, { - Namespace: "vflux", - Service: s.serverPool.API(), - }, - }...) -} - -func (s *LightEthereum) ResetWithGenesisBlock(gb *types.Block) { - s.blockchain.ResetWithGenesisBlock(gb) -} - -func (s *LightEthereum) BlockChain() *light.LightChain { return s.blockchain } -func (s *LightEthereum) TxPool() *light.TxPool { return s.txPool } -func (s *LightEthereum) Engine() consensus.Engine { return s.engine } -func (s *LightEthereum) LesVersion() int { return int(ClientProtocolVersions[0]) } -func (s *LightEthereum) EventMux() *event.TypeMux { return s.eventMux } -func (s *LightEthereum) Merger() *consensus.Merger { return s.merger } - -// Protocols returns all the currently configured network protocols to start. -func (s *LightEthereum) Protocols() []p2p.Protocol { - return s.makeProtocols(ClientProtocolVersions, s.handler.runPeer, func(id enode.ID) interface{} { - if p := s.peers.peer(id.String()); p != nil { - return p.Info() - } - return nil - }, s.serverPoolIterator) -} - -// Start implements node.Lifecycle, starting all internal goroutines needed by the -// light ethereum protocol implementation. -func (s *LightEthereum) Start() error { - log.Warn("Light client mode is an experimental feature") - - // Regularly update shutdown marker - s.shutdownTracker.Start() - - if s.udpEnabled && s.p2pServer.DiscV5 == nil { - s.udpEnabled = false - log.Error("Discovery v5 is not initialized") - } - discovery, err := s.setupDiscovery() - if err != nil { - return err - } - s.serverPool.AddSource(discovery) - s.serverPool.Start() - // Start bloom request workers. - s.wg.Add(bloomServiceThreads) - s.startBloomHandlers(params.BloomBitsBlocksClient) - - return nil -} - -// Stop implements node.Lifecycle, terminating all internal goroutines used by the -// Ethereum protocol. -func (s *LightEthereum) Stop() error { - close(s.closeCh) - s.serverPool.Stop() - s.peers.close() - s.reqDist.close() - s.odr.Stop() - s.relay.Stop() - s.bloomIndexer.Close() - s.chtIndexer.Close() - s.blockchain.Stop() - s.handler.stop() - s.txPool.Stop() - s.engine.Close() - s.eventMux.Stop() - // Clean shutdown marker as the last thing before closing db - s.shutdownTracker.Stop() - - s.chainDb.Close() - s.lesDb.Close() - s.wg.Wait() - log.Info("Light ethereum stopped") - return nil -} diff --git a/les/client_handler.go b/les/client_handler.go deleted file mode 100644 index 50f6dce879..0000000000 --- a/les/client_handler.go +++ /dev/null @@ -1,309 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "sync" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/core/forkid" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/trie/trienode" -) - -// clientHandler is responsible for receiving and processing all incoming server -// responses. -type clientHandler struct { - forkFilter forkid.Filter - backend *LightEthereum - - closeCh chan struct{} - wg sync.WaitGroup // WaitGroup used to track all connected peers. -} - -func newClientHandler(backend *LightEthereum) *clientHandler { - handler := &clientHandler{ - forkFilter: forkid.NewFilter(backend.blockchain), - backend: backend, - closeCh: make(chan struct{}), - } - return handler -} - -func (h *clientHandler) stop() { - close(h.closeCh) - h.wg.Wait() -} - -// runPeer is the p2p protocol run function for the given version. -func (h *clientHandler) runPeer(version uint, p *p2p.Peer, rw p2p.MsgReadWriter) error { - peer := newServerPeer(int(version), h.backend.config.NetworkId, false, p, newMeteredMsgWriter(rw, int(version))) - defer peer.close() - h.wg.Add(1) - defer h.wg.Done() - err := h.handle(peer, false) - return err -} - -func (h *clientHandler) handle(p *serverPeer, noInitAnnounce bool) error { - if h.backend.peers.len() >= h.backend.config.LightPeers && !p.Peer.Info().Network.Trusted { - return p2p.DiscTooManyPeers - } - p.Log().Debug("Light Ethereum peer connected", "name", p.Name()) - - // Execute the LES handshake - forkid := forkid.NewID(h.backend.blockchain.Config(), h.backend.BlockChain().Genesis(), h.backend.blockchain.CurrentHeader().Number.Uint64(), h.backend.blockchain.CurrentHeader().Time) - if err := p.Handshake(h.backend.blockchain.Genesis().Hash(), forkid, h.forkFilter); err != nil { - p.Log().Debug("Light Ethereum handshake failed", "err", err) - return err - } - // Register peer with the server pool - if h.backend.serverPool != nil { - if nvt, err := h.backend.serverPool.RegisterNode(p.Node()); err == nil { - p.setValueTracker(nvt) - p.updateVtParams() - defer func() { - p.setValueTracker(nil) - h.backend.serverPool.UnregisterNode(p.Node()) - }() - } else { - return err - } - } - // Register the peer locally - if err := h.backend.peers.register(p); err != nil { - p.Log().Error("Light Ethereum peer registration failed", "err", err) - return err - } - - serverConnectionGauge.Update(int64(h.backend.peers.len())) - - connectedAt := mclock.Now() - defer func() { - h.backend.peers.unregister(p.id) - connectionTimer.Update(time.Duration(mclock.Now() - connectedAt)) - serverConnectionGauge.Update(int64(h.backend.peers.len())) - }() - - // Mark the peer starts to be served. - p.serving.Store(true) - defer p.serving.Store(false) - - // Spawn a main loop to handle all incoming messages. - for { - if err := h.handleMsg(p); err != nil { - p.Log().Debug("Light Ethereum message handling failed", "err", err) - p.fcServer.DumpLogs() - return err - } - } -} - -// handleMsg is invoked whenever an inbound message is received from a remote -// peer. The remote connection is torn down upon returning any error. -func (h *clientHandler) handleMsg(p *serverPeer) error { - // Read the next message from the remote peer, and ensure it's fully consumed - msg, err := p.rw.ReadMsg() - if err != nil { - return err - } - p.Log().Trace("Light Ethereum message arrived", "code", msg.Code, "bytes", msg.Size) - - if msg.Size > ProtocolMaxMsgSize { - return errResp(ErrMsgTooLarge, "%v > %v", msg.Size, ProtocolMaxMsgSize) - } - defer msg.Discard() - - var deliverMsg *Msg - - // Handle the message depending on its contents - switch { - case msg.Code == AnnounceMsg: - p.Log().Trace("Received announce message") - var req announceData - if err := msg.Decode(&req); err != nil { - return errResp(ErrDecode, "%v: %v", msg, err) - } - if err := req.sanityCheck(); err != nil { - return err - } - update, size := req.Update.decode() - if p.rejectUpdate(size) { - return errResp(ErrRequestRejected, "") - } - p.updateFlowControl(update) - p.updateVtParams() - - if req.Hash != (common.Hash{}) { - if p.announceType == announceTypeNone { - return errResp(ErrUnexpectedResponse, "") - } - if p.announceType == announceTypeSigned { - if err := req.checkSignature(p.ID(), update); err != nil { - p.Log().Trace("Invalid announcement signature", "err", err) - return err - } - p.Log().Trace("Valid announcement signature") - } - p.Log().Trace("Announce message content", "number", req.Number, "hash", req.Hash, "td", req.Td, "reorg", req.ReorgDepth) - - // Update peer head information first and then notify the announcement - p.updateHead(req.Hash, req.Number, req.Td) - } - case msg.Code == BlockHeadersMsg: - p.Log().Trace("Received block header response message") - var resp struct { - ReqID, BV uint64 - Headers []*types.Header - } - if err := msg.Decode(&resp); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - p.fcServer.ReceivedReply(resp.ReqID, resp.BV) - p.answeredRequest(resp.ReqID) - - deliverMsg = &Msg{ - MsgType: MsgBlockHeaders, - ReqID: resp.ReqID, - Obj: resp.Headers, - } - case msg.Code == BlockBodiesMsg: - p.Log().Trace("Received block bodies response") - var resp struct { - ReqID, BV uint64 - Data []*types.Body - } - if err := msg.Decode(&resp); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - p.fcServer.ReceivedReply(resp.ReqID, resp.BV) - p.answeredRequest(resp.ReqID) - deliverMsg = &Msg{ - MsgType: MsgBlockBodies, - ReqID: resp.ReqID, - Obj: resp.Data, - } - case msg.Code == CodeMsg: - p.Log().Trace("Received code response") - var resp struct { - ReqID, BV uint64 - Data [][]byte - } - if err := msg.Decode(&resp); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - p.fcServer.ReceivedReply(resp.ReqID, resp.BV) - p.answeredRequest(resp.ReqID) - deliverMsg = &Msg{ - MsgType: MsgCode, - ReqID: resp.ReqID, - Obj: resp.Data, - } - case msg.Code == ReceiptsMsg: - p.Log().Trace("Received receipts response") - var resp struct { - ReqID, BV uint64 - Receipts []types.Receipts - } - if err := msg.Decode(&resp); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - p.fcServer.ReceivedReply(resp.ReqID, resp.BV) - p.answeredRequest(resp.ReqID) - deliverMsg = &Msg{ - MsgType: MsgReceipts, - ReqID: resp.ReqID, - Obj: resp.Receipts, - } - case msg.Code == ProofsV2Msg: - p.Log().Trace("Received les/2 proofs response") - var resp struct { - ReqID, BV uint64 - Data trienode.ProofList - } - if err := msg.Decode(&resp); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - p.fcServer.ReceivedReply(resp.ReqID, resp.BV) - p.answeredRequest(resp.ReqID) - deliverMsg = &Msg{ - MsgType: MsgProofsV2, - ReqID: resp.ReqID, - Obj: resp.Data, - } - case msg.Code == HelperTrieProofsMsg: - p.Log().Trace("Received helper trie proof response") - var resp struct { - ReqID, BV uint64 - Data HelperTrieResps - } - if err := msg.Decode(&resp); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - p.fcServer.ReceivedReply(resp.ReqID, resp.BV) - p.answeredRequest(resp.ReqID) - deliverMsg = &Msg{ - MsgType: MsgHelperTrieProofs, - ReqID: resp.ReqID, - Obj: resp.Data, - } - case msg.Code == TxStatusMsg: - p.Log().Trace("Received tx status response") - var resp struct { - ReqID, BV uint64 - Status []light.TxStatus - } - if err := msg.Decode(&resp); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - p.fcServer.ReceivedReply(resp.ReqID, resp.BV) - p.answeredRequest(resp.ReqID) - deliverMsg = &Msg{ - MsgType: MsgTxStatus, - ReqID: resp.ReqID, - Obj: resp.Status, - } - case msg.Code == StopMsg && p.version >= lpv3: - p.freeze() - h.backend.retriever.frozen(p) - p.Log().Debug("Service stopped") - case msg.Code == ResumeMsg && p.version >= lpv3: - var bv uint64 - if err := msg.Decode(&bv); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - p.fcServer.ResumeFreeze(bv) - p.unfreeze() - p.Log().Debug("Service resumed") - default: - p.Log().Trace("Received invalid message", "code", msg.Code) - return errResp(ErrInvalidMsgCode, "%v", msg.Code) - } - // Deliver the received response to retriever. - if deliverMsg != nil { - if err := h.backend.retriever.deliver(p, deliverMsg); err != nil { - if val := p.errCount.Add(1, mclock.Now()); val > maxResponseErrors { - return err - } - } - } - return nil -} diff --git a/les/commons.go b/les/commons.go deleted file mode 100644 index cb3fc430b7..0000000000 --- a/les/commons.go +++ /dev/null @@ -1,99 +0,0 @@ -// Copyright 2018 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "fmt" - "math/big" - "sync" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/eth/ethconfig" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/params" -) - -func errResp(code errCode, format string, v ...interface{}) error { - return fmt.Errorf("%v - %v", code, fmt.Sprintf(format, v...)) -} - -type chainReader interface { - CurrentHeader() *types.Header -} - -// lesCommons contains fields needed by both server and client. -type lesCommons struct { - genesis common.Hash - config *ethconfig.Config - chainConfig *params.ChainConfig - iConfig *light.IndexerConfig - chainDb, lesDb ethdb.Database - chainReader chainReader - chtIndexer, bloomTrieIndexer *core.ChainIndexer - - closeCh chan struct{} - wg sync.WaitGroup -} - -// NodeInfo represents a short summary of the Ethereum sub-protocol metadata -// known about the host peer. -type NodeInfo struct { - Network uint64 `json:"network"` // Ethereum network ID (1=Mainnet, Goerli=5) - Difficulty *big.Int `json:"difficulty"` // Total difficulty of the host's blockchain - Genesis common.Hash `json:"genesis"` // SHA3 hash of the host's genesis block - Config *params.ChainConfig `json:"config"` // Chain configuration for the fork rules - Head common.Hash `json:"head"` // SHA3 hash of the host's best owned block -} - -// makeProtocols creates protocol descriptors for the given LES versions. -func (c *lesCommons) makeProtocols(versions []uint, runPeer func(version uint, p *p2p.Peer, rw p2p.MsgReadWriter) error, peerInfo func(id enode.ID) interface{}, dialCandidates enode.Iterator) []p2p.Protocol { - protos := make([]p2p.Protocol, len(versions)) - for i, version := range versions { - version := version - protos[i] = p2p.Protocol{ - Name: "les", - Version: version, - Length: ProtocolLengths[version], - NodeInfo: c.nodeInfo, - Run: func(peer *p2p.Peer, rw p2p.MsgReadWriter) error { - return runPeer(version, peer, rw) - }, - PeerInfo: peerInfo, - DialCandidates: dialCandidates, - } - } - return protos -} - -// nodeInfo retrieves some protocol metadata about the running host node. -func (c *lesCommons) nodeInfo() interface{} { - head := c.chainReader.CurrentHeader() - hash := head.Hash() - return &NodeInfo{ - Network: c.config.NetworkId, - Difficulty: rawdb.ReadTd(c.chainDb, hash, head.Number.Uint64()), - Genesis: c.genesis, - Config: c.chainConfig, - Head: hash, - } -} diff --git a/les/costtracker.go b/les/costtracker.go deleted file mode 100644 index 695d54e141..0000000000 --- a/les/costtracker.go +++ /dev/null @@ -1,517 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "encoding/binary" - "math" - "sync" - "sync/atomic" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/eth/ethconfig" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/les/flowcontrol" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/metrics" -) - -const makeCostStats = false // make request cost statistics during operation - -var ( - // average request cost estimates based on serving time - reqAvgTimeCost = requestCostTable{ - GetBlockHeadersMsg: {150000, 30000}, - GetBlockBodiesMsg: {0, 700000}, - GetReceiptsMsg: {0, 1000000}, - GetCodeMsg: {0, 450000}, - GetProofsV2Msg: {0, 600000}, - GetHelperTrieProofsMsg: {0, 1000000}, - SendTxV2Msg: {0, 450000}, - GetTxStatusMsg: {0, 250000}, - } - // maximum incoming message size estimates - reqMaxInSize = requestCostTable{ - GetBlockHeadersMsg: {40, 0}, - GetBlockBodiesMsg: {0, 40}, - GetReceiptsMsg: {0, 40}, - GetCodeMsg: {0, 80}, - GetProofsV2Msg: {0, 80}, - GetHelperTrieProofsMsg: {0, 20}, - SendTxV2Msg: {0, 16500}, - GetTxStatusMsg: {0, 50}, - } - // maximum outgoing message size estimates - reqMaxOutSize = requestCostTable{ - GetBlockHeadersMsg: {0, 556}, - GetBlockBodiesMsg: {0, 100000}, - GetReceiptsMsg: {0, 200000}, - GetCodeMsg: {0, 50000}, - GetProofsV2Msg: {0, 4000}, - GetHelperTrieProofsMsg: {0, 4000}, - SendTxV2Msg: {0, 100}, - GetTxStatusMsg: {0, 100}, - } - // request amounts that have to fit into the minimum buffer size minBufferMultiplier times - minBufferReqAmount = map[uint64]uint64{ - GetBlockHeadersMsg: 192, - GetBlockBodiesMsg: 1, - GetReceiptsMsg: 1, - GetCodeMsg: 1, - GetProofsV2Msg: 1, - GetHelperTrieProofsMsg: 16, - SendTxV2Msg: 8, - GetTxStatusMsg: 64, - } - minBufferMultiplier = 3 -) - -const ( - maxCostFactor = 2 // ratio of maximum and average cost estimates - bufLimitRatio = 6000 // fixed bufLimit/MRR ratio - gfUsageThreshold = 0.5 - gfUsageTC = time.Second - gfRaiseTC = time.Second * 200 - gfDropTC = time.Second * 50 - gfDbKey = "_globalCostFactorV6" -) - -// costTracker is responsible for calculating costs and cost estimates on the -// server side. It continuously updates the global cost factor which is defined -// as the number of cost units per nanosecond of serving time in a single thread. -// It is based on statistics collected during serving requests in high-load periods -// and practically acts as a one-dimension request price scaling factor over the -// pre-defined cost estimate table. -// -// The reason for dynamically maintaining the global factor on the server side is: -// the estimated time cost of the request is fixed(hardcoded) but the configuration -// of the machine running the server is really different. Therefore, the request serving -// time in different machine will vary greatly. And also, the request serving time -// in same machine may vary greatly with different request pressure. -// -// In order to more effectively limit resources, we apply the global factor to serving -// time to make the result as close as possible to the estimated time cost no matter -// the server is slow or fast. And also we scale the totalRecharge with global factor -// so that fast server can serve more requests than estimation and slow server can -// reduce request pressure. -// -// Instead of scaling the cost values, the real value of cost units is changed by -// applying the factor to the serving times. This is more convenient because the -// changes in the cost factor can be applied immediately without always notifying -// the clients about the changed cost tables. -type costTracker struct { - db ethdb.Database - stopCh chan chan struct{} - - inSizeFactor float64 - outSizeFactor float64 - factor float64 - utilTarget float64 - minBufLimit uint64 - - gfLock sync.RWMutex - reqInfoCh chan reqInfo - totalRechargeCh chan uint64 - - stats map[uint64][]atomic.Uint64 // Used for testing purpose. - - // TestHooks - testing bool // Disable real cost evaluation for testing purpose. - testCostList RequestCostList // Customized cost table for testing purpose. -} - -// newCostTracker creates a cost tracker and loads the cost factor statistics from the database. -// It also returns the minimum capacity that can be assigned to any peer. -func newCostTracker(db ethdb.Database, config *ethconfig.Config) (*costTracker, uint64) { - utilTarget := float64(config.LightServ) * flowcontrol.FixedPointMultiplier / 100 - ct := &costTracker{ - db: db, - stopCh: make(chan chan struct{}), - reqInfoCh: make(chan reqInfo, 100), - utilTarget: utilTarget, - } - if config.LightIngress > 0 { - ct.inSizeFactor = utilTarget / float64(config.LightIngress) - } - if config.LightEgress > 0 { - ct.outSizeFactor = utilTarget / float64(config.LightEgress) - } - if makeCostStats { - ct.stats = make(map[uint64][]atomic.Uint64) - for code := range reqAvgTimeCost { - ct.stats[code] = make([]atomic.Uint64, 10) - } - } - ct.gfLoop() - costList := ct.makeCostList(ct.globalFactor() * 1.25) - for _, c := range costList { - amount := minBufferReqAmount[c.MsgCode] - cost := c.BaseCost + amount*c.ReqCost - if cost > ct.minBufLimit { - ct.minBufLimit = cost - } - } - ct.minBufLimit *= uint64(minBufferMultiplier) - return ct, (ct.minBufLimit-1)/bufLimitRatio + 1 -} - -// stop stops the cost tracker and saves the cost factor statistics to the database -func (ct *costTracker) stop() { - stopCh := make(chan struct{}) - ct.stopCh <- stopCh - <-stopCh - if makeCostStats { - ct.printStats() - } -} - -// makeCostList returns upper cost estimates based on the hardcoded cost estimate -// tables and the optionally specified incoming/outgoing bandwidth limits -func (ct *costTracker) makeCostList(globalFactor float64) RequestCostList { - maxCost := func(avgTimeCost, inSize, outSize uint64) uint64 { - cost := avgTimeCost * maxCostFactor - inSizeCost := uint64(float64(inSize) * ct.inSizeFactor * globalFactor) - if inSizeCost > cost { - cost = inSizeCost - } - outSizeCost := uint64(float64(outSize) * ct.outSizeFactor * globalFactor) - if outSizeCost > cost { - cost = outSizeCost - } - return cost - } - var list RequestCostList - for code, data := range reqAvgTimeCost { - baseCost := maxCost(data.baseCost, reqMaxInSize[code].baseCost, reqMaxOutSize[code].baseCost) - reqCost := maxCost(data.reqCost, reqMaxInSize[code].reqCost, reqMaxOutSize[code].reqCost) - if ct.minBufLimit != 0 { - // if minBufLimit is set then always enforce maximum request cost <= minBufLimit - maxCost := baseCost + reqCost*minBufferReqAmount[code] - if maxCost > ct.minBufLimit { - mul := 0.999 * float64(ct.minBufLimit) / float64(maxCost) - baseCost = uint64(float64(baseCost) * mul) - reqCost = uint64(float64(reqCost) * mul) - } - } - - list = append(list, requestCostListItem{ - MsgCode: code, - BaseCost: baseCost, - ReqCost: reqCost, - }) - } - return list -} - -// reqInfo contains the estimated time cost and the actual request serving time -// which acts as a feed source to update factor maintained by costTracker. -type reqInfo struct { - // avgTimeCost is the estimated time cost corresponding to maxCostTable. - avgTimeCost float64 - - // servingTime is the CPU time corresponding to the actual processing of - // the request. - servingTime float64 - - // msgCode indicates the type of request. - msgCode uint64 -} - -// gfLoop starts an event loop which updates the global cost factor which is -// calculated as a weighted average of the average estimate / serving time ratio. -// The applied weight equals the serving time if gfUsage is over a threshold, -// zero otherwise. gfUsage is the recent average serving time per time unit in -// an exponential moving window. This ensures that statistics are collected only -// under high-load circumstances where the measured serving times are relevant. -// The total recharge parameter of the flow control system which controls the -// total allowed serving time per second but nominated in cost units, should -// also be scaled with the cost factor and is also updated by this loop. -func (ct *costTracker) gfLoop() { - var ( - factor, totalRecharge float64 - gfLog, recentTime, recentAvg float64 - - lastUpdate, expUpdate = mclock.Now(), mclock.Now() - ) - - // Load historical cost factor statistics from the database. - data, _ := ct.db.Get([]byte(gfDbKey)) - if len(data) == 8 { - gfLog = math.Float64frombits(binary.BigEndian.Uint64(data[:])) - } - ct.factor = math.Exp(gfLog) - factor, totalRecharge = ct.factor, ct.utilTarget*ct.factor - - // In order to perform factor data statistics under the high request pressure, - // we only adjust factor when recent factor usage beyond the threshold. - threshold := gfUsageThreshold * float64(gfUsageTC) * ct.utilTarget / flowcontrol.FixedPointMultiplier - - go func() { - saveCostFactor := func() { - var data [8]byte - binary.BigEndian.PutUint64(data[:], math.Float64bits(gfLog)) - ct.db.Put([]byte(gfDbKey), data[:]) - log.Debug("global cost factor saved", "value", factor) - } - saveTicker := time.NewTicker(time.Minute * 10) - defer saveTicker.Stop() - - for { - select { - case r := <-ct.reqInfoCh: - relCost := int64(factor * r.servingTime * 100 / r.avgTimeCost) // Convert the value to a percentage form - - // Record more metrics if we are debugging - if metrics.EnabledExpensive { - switch r.msgCode { - case GetBlockHeadersMsg: - relativeCostHeaderHistogram.Update(relCost) - case GetBlockBodiesMsg: - relativeCostBodyHistogram.Update(relCost) - case GetReceiptsMsg: - relativeCostReceiptHistogram.Update(relCost) - case GetCodeMsg: - relativeCostCodeHistogram.Update(relCost) - case GetProofsV2Msg: - relativeCostProofHistogram.Update(relCost) - case GetHelperTrieProofsMsg: - relativeCostHelperProofHistogram.Update(relCost) - case SendTxV2Msg: - relativeCostSendTxHistogram.Update(relCost) - case GetTxStatusMsg: - relativeCostTxStatusHistogram.Update(relCost) - } - } - // SendTxV2 and GetTxStatus requests are two special cases. - // All other requests will only put pressure on the database, and - // the corresponding delay is relatively stable. While these two - // requests involve txpool query, which is usually unstable. - // - // TODO(rjl493456442) fixes this. - if r.msgCode == SendTxV2Msg || r.msgCode == GetTxStatusMsg { - continue - } - requestServedMeter.Mark(int64(r.servingTime)) - requestServedTimer.Update(time.Duration(r.servingTime)) - requestEstimatedMeter.Mark(int64(r.avgTimeCost / factor)) - requestEstimatedTimer.Update(time.Duration(r.avgTimeCost / factor)) - relativeCostHistogram.Update(relCost) - - now := mclock.Now() - dt := float64(now - expUpdate) - expUpdate = now - exp := math.Exp(-dt / float64(gfUsageTC)) - - // calculate factor correction until now, based on previous values - var gfCorr float64 - max := recentTime - if recentAvg > max { - max = recentAvg - } - // we apply continuous correction when MAX(recentTime, recentAvg) > threshold - if max > threshold { - // calculate correction time between last expUpdate and now - if max*exp >= threshold { - gfCorr = dt - } else { - gfCorr = math.Log(max/threshold) * float64(gfUsageTC) - } - // calculate log(factor) correction with the right direction and time constant - if recentTime > recentAvg { - // drop factor if actual serving times are larger than average estimates - gfCorr /= -float64(gfDropTC) - } else { - // raise factor if actual serving times are smaller than average estimates - gfCorr /= float64(gfRaiseTC) - } - } - // update recent cost values with current request - recentTime = recentTime*exp + r.servingTime - recentAvg = recentAvg*exp + r.avgTimeCost/factor - - if gfCorr != 0 { - // Apply the correction to factor - gfLog += gfCorr - factor = math.Exp(gfLog) - // Notify outside modules the new factor and totalRecharge. - if time.Duration(now-lastUpdate) > time.Second { - totalRecharge, lastUpdate = ct.utilTarget*factor, now - ct.gfLock.Lock() - ct.factor = factor - ch := ct.totalRechargeCh - ct.gfLock.Unlock() - if ch != nil { - select { - case ct.totalRechargeCh <- uint64(totalRecharge): - default: - } - } - globalFactorGauge.Update(int64(1000 * factor)) - log.Debug("global cost factor updated", "factor", factor) - } - } - recentServedGauge.Update(int64(recentTime)) - recentEstimatedGauge.Update(int64(recentAvg)) - - case <-saveTicker.C: - saveCostFactor() - - case stopCh := <-ct.stopCh: - saveCostFactor() - close(stopCh) - return - } - } - }() -} - -// globalFactor returns the current value of the global cost factor -func (ct *costTracker) globalFactor() float64 { - ct.gfLock.RLock() - defer ct.gfLock.RUnlock() - - return ct.factor -} - -// totalRecharge returns the current total recharge parameter which is used by -// flowcontrol.ClientManager and is scaled by the global cost factor -func (ct *costTracker) totalRecharge() uint64 { - ct.gfLock.RLock() - defer ct.gfLock.RUnlock() - - return uint64(ct.factor * ct.utilTarget) -} - -// subscribeTotalRecharge returns all future updates to the total recharge value -// through a channel and also returns the current value -func (ct *costTracker) subscribeTotalRecharge(ch chan uint64) uint64 { - ct.gfLock.Lock() - defer ct.gfLock.Unlock() - - ct.totalRechargeCh = ch - return uint64(ct.factor * ct.utilTarget) -} - -// updateStats updates the global cost factor and (if enabled) the real cost vs. -// average estimate statistics -func (ct *costTracker) updateStats(code, amount, servingTime, realCost uint64) { - avg := reqAvgTimeCost[code] - avgTimeCost := avg.baseCost + amount*avg.reqCost - select { - case ct.reqInfoCh <- reqInfo{float64(avgTimeCost), float64(servingTime), code}: - default: - } - if makeCostStats { - realCost <<= 4 - l := 0 - for l < 9 && realCost > avgTimeCost { - l++ - realCost >>= 1 - } - ct.stats[code][l].Add(1) - } -} - -// realCost calculates the final cost of a request based on actual serving time, -// incoming and outgoing message size -// -// Note: message size is only taken into account if bandwidth limitation is applied -// and the cost based on either message size is greater than the cost based on -// serving time. A maximum of the three costs is applied instead of their sum -// because the three limited resources (serving thread time and i/o bandwidth) can -// also be maxed out simultaneously. -func (ct *costTracker) realCost(servingTime uint64, inSize, outSize uint32) uint64 { - cost := float64(servingTime) - inSizeCost := float64(inSize) * ct.inSizeFactor - if inSizeCost > cost { - cost = inSizeCost - } - outSizeCost := float64(outSize) * ct.outSizeFactor - if outSizeCost > cost { - cost = outSizeCost - } - return uint64(cost * ct.globalFactor()) -} - -// printStats prints the distribution of real request cost relative to the average estimates -func (ct *costTracker) printStats() { - if ct.stats == nil { - return - } - for code, arr := range ct.stats { - log.Info("Request cost statistics", "code", code, "1/16", arr[0].Load(), "1/8", arr[1].Load(), "1/4", arr[2].Load(), "1/2", arr[3].Load(), "1", arr[4].Load(), "2", arr[5].Load(), "4", arr[6].Load(), "8", arr[7].Load(), "16", arr[8].Load(), ">16", arr[9].Load()) - } -} - -type ( - // requestCostTable assigns a cost estimate function to each request type - // which is a linear function of the requested amount - // (cost = baseCost + reqCost * amount) - requestCostTable map[uint64]*requestCosts - requestCosts struct { - baseCost, reqCost uint64 - } - - // RequestCostList is a list representation of request costs which is used for - // database storage and communication through the network - RequestCostList []requestCostListItem - requestCostListItem struct { - MsgCode, BaseCost, ReqCost uint64 - } -) - -// getMaxCost calculates the estimated cost for a given request type and amount -func (table requestCostTable) getMaxCost(code, amount uint64) uint64 { - costs := table[code] - return costs.baseCost + amount*costs.reqCost -} - -// decode converts a cost list to a cost table -func (list RequestCostList) decode(protocolLength uint64) requestCostTable { - table := make(requestCostTable) - for _, e := range list { - if e.MsgCode < protocolLength { - table[e.MsgCode] = &requestCosts{ - baseCost: e.BaseCost, - reqCost: e.ReqCost, - } - } - } - return table -} - -// testCostList returns a dummy request cost list used by tests -func testCostList(testCost uint64) RequestCostList { - cl := make(RequestCostList, len(reqAvgTimeCost)) - var max uint64 - for code := range reqAvgTimeCost { - if code > max { - max = code - } - } - i := 0 - for code := uint64(0); code <= max; code++ { - if _, ok := reqAvgTimeCost[code]; ok { - cl[i].MsgCode = code - cl[i].BaseCost = testCost - cl[i].ReqCost = 0 - i++ - } - } - return cl -} diff --git a/les/distributor.go b/les/distributor.go deleted file mode 100644 index a0319c67f7..0000000000 --- a/les/distributor.go +++ /dev/null @@ -1,313 +0,0 @@ -// Copyright 2017 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "container/list" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/les/utils" -) - -// requestDistributor implements a mechanism that distributes requests to -// suitable peers, obeying flow control rules and prioritizing them in creation -// order (even when a resend is necessary). -type requestDistributor struct { - clock mclock.Clock - reqQueue *list.List - lastReqOrder uint64 - peers map[distPeer]struct{} - peerLock sync.RWMutex - loopChn chan struct{} - loopNextSent bool - lock sync.Mutex - - closeCh chan struct{} - wg sync.WaitGroup -} - -// distPeer is an LES server peer interface for the request distributor. -// waitBefore returns either the necessary waiting time before sending a request -// with the given upper estimated cost or the estimated remaining relative buffer -// value after sending such a request (in which case the request can be sent -// immediately). At least one of these values is always zero. -type distPeer interface { - waitBefore(uint64) (time.Duration, float64) - canQueue() bool - queueSend(f func()) bool -} - -// distReq is the request abstraction used by the distributor. It is based on -// three callback functions: -// - getCost returns the upper estimate of the cost of sending the request to a given peer -// - canSend tells if the server peer is suitable to serve the request -// - request prepares sending the request to the given peer and returns a function that -// does the actual sending. Request order should be preserved but the callback itself should not -// block until it is sent because other peers might still be able to receive requests while -// one of them is blocking. Instead, the returned function is put in the peer's send queue. -type distReq struct { - getCost func(distPeer) uint64 - canSend func(distPeer) bool - request func(distPeer) func() - - reqOrder uint64 - sentChn chan distPeer - element *list.Element - waitForPeers mclock.AbsTime - enterQueue mclock.AbsTime -} - -// newRequestDistributor creates a new request distributor -func newRequestDistributor(peers *serverPeerSet, clock mclock.Clock) *requestDistributor { - d := &requestDistributor{ - clock: clock, - reqQueue: list.New(), - loopChn: make(chan struct{}, 2), - closeCh: make(chan struct{}), - peers: make(map[distPeer]struct{}), - } - if peers != nil { - peers.subscribe(d) - } - d.wg.Add(1) - go d.loop() - return d -} - -// registerPeer implements peerSetNotify -func (d *requestDistributor) registerPeer(p *serverPeer) { - d.peerLock.Lock() - d.peers[p] = struct{}{} - d.peerLock.Unlock() -} - -// unregisterPeer implements peerSetNotify -func (d *requestDistributor) unregisterPeer(p *serverPeer) { - d.peerLock.Lock() - delete(d.peers, p) - d.peerLock.Unlock() -} - -// registerTestPeer adds a new test peer -func (d *requestDistributor) registerTestPeer(p distPeer) { - d.peerLock.Lock() - d.peers[p] = struct{}{} - d.peerLock.Unlock() -} - -var ( - // distMaxWait is the maximum waiting time after which further necessary waiting - // times are recalculated based on new feedback from the servers - distMaxWait = time.Millisecond * 50 - - // waitForPeers is the time window in which a request does not fail even if it - // has no suitable peers to send to at the moment - waitForPeers = time.Second * 3 -) - -// main event loop -func (d *requestDistributor) loop() { - defer d.wg.Done() - for { - select { - case <-d.closeCh: - d.lock.Lock() - elem := d.reqQueue.Front() - for elem != nil { - req := elem.Value.(*distReq) - close(req.sentChn) - req.sentChn = nil - elem = elem.Next() - } - d.lock.Unlock() - return - case <-d.loopChn: - d.lock.Lock() - d.loopNextSent = false - loop: - for { - peer, req, wait := d.nextRequest() - if req != nil && wait == 0 { - chn := req.sentChn // save sentChn because remove sets it to nil - d.remove(req) - send := req.request(peer) - if send != nil { - peer.queueSend(send) - requestSendDelay.Update(time.Duration(d.clock.Now() - req.enterQueue)) - } - chn <- peer - close(chn) - } else { - if wait == 0 { - // no request to send and nothing to wait for; the next - // queued request will wake up the loop - break loop - } - d.loopNextSent = true // a "next" signal has been sent, do not send another one until this one has been received - if wait > distMaxWait { - // waiting times may be reduced by incoming request replies, if it is too long, recalculate it periodically - wait = distMaxWait - } - go func() { - d.clock.Sleep(wait) - d.loopChn <- struct{}{} - }() - break loop - } - } - d.lock.Unlock() - } - } -} - -// selectPeerItem represents a peer to be selected for a request by weightedRandomSelect -type selectPeerItem struct { - peer distPeer - req *distReq - weight uint64 -} - -func selectPeerWeight(i interface{}) uint64 { - return i.(selectPeerItem).weight -} - -// nextRequest returns the next possible request from any peer, along with the -// associated peer and necessary waiting time -func (d *requestDistributor) nextRequest() (distPeer, *distReq, time.Duration) { - checkedPeers := make(map[distPeer]struct{}) - elem := d.reqQueue.Front() - var ( - bestWait time.Duration - sel *utils.WeightedRandomSelect - ) - - d.peerLock.RLock() - defer d.peerLock.RUnlock() - - peerCount := len(d.peers) - for (len(checkedPeers) < peerCount || elem == d.reqQueue.Front()) && elem != nil { - req := elem.Value.(*distReq) - canSend := false - now := d.clock.Now() - if req.waitForPeers > now { - canSend = true - wait := time.Duration(req.waitForPeers - now) - if bestWait == 0 || wait < bestWait { - bestWait = wait - } - } - for peer := range d.peers { - if _, ok := checkedPeers[peer]; !ok && peer.canQueue() && req.canSend(peer) { - canSend = true - cost := req.getCost(peer) - wait, bufRemain := peer.waitBefore(cost) - if wait == 0 { - if sel == nil { - sel = utils.NewWeightedRandomSelect(selectPeerWeight) - } - sel.Update(selectPeerItem{peer: peer, req: req, weight: uint64(bufRemain*1000000) + 1}) - } else { - if bestWait == 0 || wait < bestWait { - bestWait = wait - } - } - checkedPeers[peer] = struct{}{} - } - } - next := elem.Next() - if !canSend && elem == d.reqQueue.Front() { - close(req.sentChn) - d.remove(req) - } - elem = next - } - - if sel != nil { - c := sel.Choose().(selectPeerItem) - return c.peer, c.req, 0 - } - return nil, nil, bestWait -} - -// queue adds a request to the distribution queue, returns a channel where the -// receiving peer is sent once the request has been sent (request callback returned). -// If the request is cancelled or timed out without suitable peers, the channel is -// closed without sending any peer references to it. -func (d *requestDistributor) queue(r *distReq) chan distPeer { - d.lock.Lock() - defer d.lock.Unlock() - - if r.reqOrder == 0 { - d.lastReqOrder++ - r.reqOrder = d.lastReqOrder - r.waitForPeers = d.clock.Now().Add(waitForPeers) - } - // Assign the timestamp when the request is queued no matter it's - // a new one or re-queued one. - r.enterQueue = d.clock.Now() - - back := d.reqQueue.Back() - if back == nil || r.reqOrder > back.Value.(*distReq).reqOrder { - r.element = d.reqQueue.PushBack(r) - } else { - before := d.reqQueue.Front() - for before.Value.(*distReq).reqOrder < r.reqOrder { - before = before.Next() - } - r.element = d.reqQueue.InsertBefore(r, before) - } - - if !d.loopNextSent { - d.loopNextSent = true - d.loopChn <- struct{}{} - } - - r.sentChn = make(chan distPeer, 1) - return r.sentChn -} - -// cancel removes a request from the queue if it has not been sent yet (returns -// false if it has been sent already). It is guaranteed that the callback functions -// will not be called after cancel returns. -func (d *requestDistributor) cancel(r *distReq) bool { - d.lock.Lock() - defer d.lock.Unlock() - - if r.sentChn == nil { - return false - } - - close(r.sentChn) - d.remove(r) - return true -} - -// remove removes a request from the queue -func (d *requestDistributor) remove(r *distReq) { - r.sentChn = nil - if r.element != nil { - d.reqQueue.Remove(r.element) - r.element = nil - } -} - -func (d *requestDistributor) close() { - close(d.closeCh) - d.wg.Wait() -} diff --git a/les/distributor_test.go b/les/distributor_test.go deleted file mode 100644 index 9a93dba145..0000000000 --- a/les/distributor_test.go +++ /dev/null @@ -1,189 +0,0 @@ -// Copyright 2017 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "math/rand" - "sync" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" -) - -type testDistReq struct { - cost, procTime, order uint64 - canSendTo map[*testDistPeer]struct{} -} - -func (r *testDistReq) getCost(dp distPeer) uint64 { - return r.cost -} - -func (r *testDistReq) canSend(dp distPeer) bool { - _, ok := r.canSendTo[dp.(*testDistPeer)] - return ok -} - -func (r *testDistReq) request(dp distPeer) func() { - return func() { dp.(*testDistPeer).send(r) } -} - -type testDistPeer struct { - sent []*testDistReq - sumCost uint64 - lock sync.RWMutex -} - -func (p *testDistPeer) send(r *testDistReq) { - p.lock.Lock() - defer p.lock.Unlock() - - p.sent = append(p.sent, r) - p.sumCost += r.cost -} - -func (p *testDistPeer) worker(t *testing.T, checkOrder bool, stop chan struct{}) { - var last uint64 - for { - wait := time.Millisecond - p.lock.Lock() - if len(p.sent) > 0 { - rq := p.sent[0] - wait = time.Duration(rq.procTime) - p.sumCost -= rq.cost - if checkOrder { - if rq.order <= last { - t.Errorf("Requests processed in wrong order") - } - last = rq.order - } - p.sent = p.sent[1:] - } - p.lock.Unlock() - select { - case <-stop: - return - case <-time.After(wait): - } - } -} - -const ( - testDistBufLimit = 10000000 - testDistMaxCost = 1000000 - testDistPeerCount = 2 - testDistReqCount = 10 - testDistMaxResendCount = 3 -) - -func (p *testDistPeer) waitBefore(cost uint64) (time.Duration, float64) { - p.lock.RLock() - sumCost := p.sumCost + cost - p.lock.RUnlock() - if sumCost < testDistBufLimit { - return 0, float64(testDistBufLimit-sumCost) / float64(testDistBufLimit) - } - return time.Duration(sumCost - testDistBufLimit), 0 -} - -func (p *testDistPeer) canQueue() bool { - return true -} - -func (p *testDistPeer) queueSend(f func()) bool { - f() - return true -} - -func TestRequestDistributor(t *testing.T) { - testRequestDistributor(t, false) -} - -func TestRequestDistributorResend(t *testing.T) { - testRequestDistributor(t, true) -} - -func testRequestDistributor(t *testing.T, resend bool) { - stop := make(chan struct{}) - defer close(stop) - - dist := newRequestDistributor(nil, &mclock.System{}) - var peers [testDistPeerCount]*testDistPeer - for i := range peers { - peers[i] = &testDistPeer{} - go peers[i].worker(t, !resend, stop) - dist.registerTestPeer(peers[i]) - } - // Disable the mechanism that we will wait a few time for request - // even there is no suitable peer to send right now. - waitForPeers = 0 - - var wg sync.WaitGroup - - for i := 1; i <= testDistReqCount; i++ { - cost := uint64(rand.Int63n(testDistMaxCost)) - procTime := uint64(rand.Int63n(int64(cost + 1))) - rq := &testDistReq{ - cost: cost, - procTime: procTime, - order: uint64(i), - canSendTo: make(map[*testDistPeer]struct{}), - } - for _, peer := range peers { - if rand.Intn(2) != 0 { - rq.canSendTo[peer] = struct{}{} - } - } - - wg.Add(1) - req := &distReq{ - getCost: rq.getCost, - canSend: rq.canSend, - request: rq.request, - } - chn := dist.queue(req) - go func() { - cnt := 1 - if resend && len(rq.canSendTo) != 0 { - cnt = rand.Intn(testDistMaxResendCount) + 1 - } - for i := 0; i < cnt; i++ { - if i != 0 { - chn = dist.queue(req) - } - p := <-chn - if p == nil { - if len(rq.canSendTo) != 0 { - t.Errorf("Request that could have been sent was dropped") - } - } else { - peer := p.(*testDistPeer) - if _, ok := rq.canSendTo[peer]; !ok { - t.Errorf("Request sent to wrong peer") - } - } - } - wg.Done() - }() - if rand.Intn(1000) == 0 { - time.Sleep(time.Duration(rand.Intn(5000000))) - } - } - - wg.Wait() -} diff --git a/les/enr_entry.go b/les/enr_entry.go deleted file mode 100644 index 307313fb10..0000000000 --- a/les/enr_entry.go +++ /dev/null @@ -1,72 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "github.com/ethereum/go-ethereum/core/forkid" - "github.com/ethereum/go-ethereum/p2p/dnsdisc" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/rlp" -) - -// lesEntry is the "les" ENR entry. This is set for LES servers only. -type lesEntry struct { - // Ignore additional fields (for forward compatibility). - VfxVersion uint - Rest []rlp.RawValue `rlp:"tail"` -} - -func (lesEntry) ENRKey() string { return "les" } - -// ethEntry is the "eth" ENR entry. This is redeclared here to avoid depending on package eth. -type ethEntry struct { - ForkID forkid.ID - Tail []rlp.RawValue `rlp:"tail"` -} - -func (ethEntry) ENRKey() string { return "eth" } - -// setupDiscovery creates the node discovery source for the eth protocol. -func (eth *LightEthereum) setupDiscovery() (enode.Iterator, error) { - it := enode.NewFairMix(0) - - // Enable DNS discovery. - if len(eth.config.EthDiscoveryURLs) != 0 { - client := dnsdisc.NewClient(dnsdisc.Config{}) - dns, err := client.NewIterator(eth.config.EthDiscoveryURLs...) - if err != nil { - return nil, err - } - it.AddSource(dns) - } - - // Enable DHT. - if eth.udpEnabled { - it.AddSource(eth.p2pServer.DiscV5.RandomNodes()) - } - - forkFilter := forkid.NewFilter(eth.blockchain) - iterator := enode.Filter(it, func(n *enode.Node) bool { return nodeIsServer(forkFilter, n) }) - return iterator, nil -} - -// nodeIsServer checks whether n is an LES server node. -func nodeIsServer(forkFilter forkid.Filter, n *enode.Node) bool { - var les lesEntry - var eth ethEntry - return n.Load(&les) == nil && n.Load(ð) == nil && forkFilter(eth.ForkID) == nil -} diff --git a/les/flowcontrol/control.go b/les/flowcontrol/control.go deleted file mode 100644 index 76a241fa5a..0000000000 --- a/les/flowcontrol/control.go +++ /dev/null @@ -1,433 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// Package flowcontrol implements a client side flow control mechanism -package flowcontrol - -import ( - "fmt" - "math" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/log" -) - -const ( - // fcTimeConst is the time constant applied for MinRecharge during linear - // buffer recharge period - fcTimeConst = time.Millisecond - // DecParamDelay is applied at server side when decreasing capacity in order to - // avoid a buffer underrun error due to requests sent by the client before - // receiving the capacity update announcement - DecParamDelay = time.Second * 2 - // keepLogs is the duration of keeping logs; logging is not used if zero - keepLogs = 0 -) - -// ServerParams are the flow control parameters specified by a server for a client -// -// Note: a server can assign different amounts of capacity to each client by giving -// different parameters to them. -type ServerParams struct { - BufLimit, MinRecharge uint64 -} - -// scheduledUpdate represents a delayed flow control parameter update -type scheduledUpdate struct { - time mclock.AbsTime - params ServerParams -} - -// ClientNode is the flow control system's representation of a client -// (used in server mode only) -type ClientNode struct { - params ServerParams - bufValue int64 - lastTime mclock.AbsTime - updateSchedule []scheduledUpdate - sumCost uint64 // sum of req costs received from this client - accepted map[uint64]uint64 // value = sumCost after accepting the given req - connected bool - lock sync.Mutex - cm *ClientManager - log *logger - cmNodeFields -} - -// NewClientNode returns a new ClientNode -func NewClientNode(cm *ClientManager, params ServerParams) *ClientNode { - node := &ClientNode{ - cm: cm, - params: params, - bufValue: int64(params.BufLimit), - lastTime: cm.clock.Now(), - accepted: make(map[uint64]uint64), - connected: true, - } - if keepLogs > 0 { - node.log = newLogger(keepLogs) - } - cm.connect(node) - return node -} - -// Disconnect should be called when a client is disconnected -func (node *ClientNode) Disconnect() { - node.lock.Lock() - defer node.lock.Unlock() - - node.connected = false - node.cm.disconnect(node) -} - -// BufferStatus returns the current buffer value and limit -func (node *ClientNode) BufferStatus() (uint64, uint64) { - node.lock.Lock() - defer node.lock.Unlock() - - if !node.connected { - return 0, 0 - } - now := node.cm.clock.Now() - node.update(now) - node.cm.updateBuffer(node, 0, now) - bv := node.bufValue - if bv < 0 { - bv = 0 - } - return uint64(bv), node.params.BufLimit -} - -// OneTimeCost subtracts the given amount from the node's buffer. -// -// Note: this call can take the buffer into the negative region internally. -// In this case zero buffer value is returned by exported calls and no requests -// are accepted. -func (node *ClientNode) OneTimeCost(cost uint64) { - node.lock.Lock() - defer node.lock.Unlock() - - now := node.cm.clock.Now() - node.update(now) - node.bufValue -= int64(cost) - node.cm.updateBuffer(node, -int64(cost), now) -} - -// Freeze notifies the client manager about a client freeze event in which case -// the total capacity allowance is slightly reduced. -func (node *ClientNode) Freeze() { - node.lock.Lock() - frozenCap := node.params.MinRecharge - node.lock.Unlock() - node.cm.reduceTotalCapacity(frozenCap) -} - -// update recalculates the buffer value at a specified time while also performing -// scheduled flow control parameter updates if necessary -func (node *ClientNode) update(now mclock.AbsTime) { - for len(node.updateSchedule) > 0 && node.updateSchedule[0].time <= now { - node.recalcBV(node.updateSchedule[0].time) - node.updateParams(node.updateSchedule[0].params, now) - node.updateSchedule = node.updateSchedule[1:] - } - node.recalcBV(now) -} - -// recalcBV recalculates the buffer value at a specified time -func (node *ClientNode) recalcBV(now mclock.AbsTime) { - dt := uint64(now - node.lastTime) - if now < node.lastTime { - dt = 0 - } - node.bufValue += int64(node.params.MinRecharge * dt / uint64(fcTimeConst)) - if node.bufValue > int64(node.params.BufLimit) { - node.bufValue = int64(node.params.BufLimit) - } - if node.log != nil { - node.log.add(now, fmt.Sprintf("updated bv=%d MRR=%d BufLimit=%d", node.bufValue, node.params.MinRecharge, node.params.BufLimit)) - } - node.lastTime = now -} - -// UpdateParams updates the flow control parameters of a client node -func (node *ClientNode) UpdateParams(params ServerParams) { - node.lock.Lock() - defer node.lock.Unlock() - - now := node.cm.clock.Now() - node.update(now) - if params.MinRecharge >= node.params.MinRecharge { - node.updateSchedule = nil - node.updateParams(params, now) - } else { - for i, s := range node.updateSchedule { - if params.MinRecharge >= s.params.MinRecharge { - s.params = params - node.updateSchedule = node.updateSchedule[:i+1] - return - } - } - node.updateSchedule = append(node.updateSchedule, scheduledUpdate{time: now.Add(DecParamDelay), params: params}) - } -} - -// updateParams updates the flow control parameters of the node -func (node *ClientNode) updateParams(params ServerParams, now mclock.AbsTime) { - diff := int64(params.BufLimit - node.params.BufLimit) - if diff > 0 { - node.bufValue += diff - } else if node.bufValue > int64(params.BufLimit) { - node.bufValue = int64(params.BufLimit) - } - node.cm.updateParams(node, params, now) -} - -// AcceptRequest returns whether a new request can be accepted and the missing -// buffer amount if it was rejected due to a buffer underrun. If accepted, maxCost -// is deducted from the flow control buffer. -func (node *ClientNode) AcceptRequest(reqID, index, maxCost uint64) (accepted bool, bufShort uint64, priority int64) { - node.lock.Lock() - defer node.lock.Unlock() - - now := node.cm.clock.Now() - node.update(now) - if int64(maxCost) > node.bufValue { - if node.log != nil { - node.log.add(now, fmt.Sprintf("rejected reqID=%d bv=%d maxCost=%d", reqID, node.bufValue, maxCost)) - node.log.dump(now) - } - return false, maxCost - uint64(node.bufValue), 0 - } - node.bufValue -= int64(maxCost) - node.sumCost += maxCost - if node.log != nil { - node.log.add(now, fmt.Sprintf("accepted reqID=%d bv=%d maxCost=%d sumCost=%d", reqID, node.bufValue, maxCost, node.sumCost)) - } - node.accepted[index] = node.sumCost - return true, 0, node.cm.accepted(node, maxCost, now) -} - -// RequestProcessed should be called when the request has been processed -func (node *ClientNode) RequestProcessed(reqID, index, maxCost, realCost uint64) uint64 { - node.lock.Lock() - defer node.lock.Unlock() - - now := node.cm.clock.Now() - node.update(now) - node.cm.processed(node, maxCost, realCost, now) - bv := node.bufValue + int64(node.sumCost-node.accepted[index]) - if node.log != nil { - node.log.add(now, fmt.Sprintf("processed reqID=%d bv=%d maxCost=%d realCost=%d sumCost=%d oldSumCost=%d reportedBV=%d", reqID, node.bufValue, maxCost, realCost, node.sumCost, node.accepted[index], bv)) - } - delete(node.accepted, index) - if bv < 0 { - return 0 - } - return uint64(bv) -} - -// ServerNode is the flow control system's representation of a server -// (used in client mode only) -type ServerNode struct { - clock mclock.Clock - bufEstimate uint64 - bufRecharge bool - lastTime mclock.AbsTime - params ServerParams - sumCost uint64 // sum of req costs sent to this server - pending map[uint64]uint64 // value = sumCost after sending the given req - log *logger - lock sync.RWMutex -} - -// NewServerNode returns a new ServerNode -func NewServerNode(params ServerParams, clock mclock.Clock) *ServerNode { - node := &ServerNode{ - clock: clock, - bufEstimate: params.BufLimit, - bufRecharge: false, - lastTime: clock.Now(), - params: params, - pending: make(map[uint64]uint64), - } - if keepLogs > 0 { - node.log = newLogger(keepLogs) - } - return node -} - -// UpdateParams updates the flow control parameters of the node -func (node *ServerNode) UpdateParams(params ServerParams) { - node.lock.Lock() - defer node.lock.Unlock() - - node.recalcBLE(mclock.Now()) - if params.BufLimit > node.params.BufLimit { - node.bufEstimate += params.BufLimit - node.params.BufLimit - } else { - if node.bufEstimate > params.BufLimit { - node.bufEstimate = params.BufLimit - } - } - node.params = params -} - -// recalcBLE recalculates the lowest estimate for the client's buffer value at -// the given server at the specified time -func (node *ServerNode) recalcBLE(now mclock.AbsTime) { - if now < node.lastTime { - return - } - if node.bufRecharge { - dt := uint64(now - node.lastTime) - node.bufEstimate += node.params.MinRecharge * dt / uint64(fcTimeConst) - if node.bufEstimate >= node.params.BufLimit { - node.bufEstimate = node.params.BufLimit - node.bufRecharge = false - } - } - node.lastTime = now - if node.log != nil { - node.log.add(now, fmt.Sprintf("updated bufEst=%d MRR=%d BufLimit=%d", node.bufEstimate, node.params.MinRecharge, node.params.BufLimit)) - } -} - -// safetyMargin is added to the flow control waiting time when estimated buffer value is low -const safetyMargin = time.Millisecond - -// CanSend returns the minimum waiting time required before sending a request -// with the given maximum estimated cost. Second return value is the relative -// estimated buffer level after sending the request (divided by BufLimit). -func (node *ServerNode) CanSend(maxCost uint64) (time.Duration, float64) { - node.lock.RLock() - defer node.lock.RUnlock() - - if node.params.BufLimit == 0 { - return time.Duration(math.MaxInt64), 0 - } - now := node.clock.Now() - node.recalcBLE(now) - maxCost += uint64(safetyMargin) * node.params.MinRecharge / uint64(fcTimeConst) - if maxCost > node.params.BufLimit { - maxCost = node.params.BufLimit - } - if node.bufEstimate >= maxCost { - relBuf := float64(node.bufEstimate-maxCost) / float64(node.params.BufLimit) - if node.log != nil { - node.log.add(now, fmt.Sprintf("canSend bufEst=%d maxCost=%d true relBuf=%f", node.bufEstimate, maxCost, relBuf)) - } - return 0, relBuf - } - timeLeft := time.Duration((maxCost - node.bufEstimate) * uint64(fcTimeConst) / node.params.MinRecharge) - if node.log != nil { - node.log.add(now, fmt.Sprintf("canSend bufEst=%d maxCost=%d false timeLeft=%v", node.bufEstimate, maxCost, timeLeft)) - } - return timeLeft, 0 -} - -// QueuedRequest should be called when the request has been assigned to the given -// server node, before putting it in the send queue. It is mandatory that requests -// are sent in the same order as the QueuedRequest calls are made. -func (node *ServerNode) QueuedRequest(reqID, maxCost uint64) { - node.lock.Lock() - defer node.lock.Unlock() - - now := node.clock.Now() - node.recalcBLE(now) - // Note: we do not know when requests actually arrive to the server so bufRecharge - // is not turned on here if buffer was full; in this case it is going to be turned - // on by the first reply's bufValue feedback - if node.bufEstimate >= maxCost { - node.bufEstimate -= maxCost - } else { - log.Error("Queued request with insufficient buffer estimate") - node.bufEstimate = 0 - } - node.sumCost += maxCost - node.pending[reqID] = node.sumCost - if node.log != nil { - node.log.add(now, fmt.Sprintf("queued reqID=%d bufEst=%d maxCost=%d sumCost=%d", reqID, node.bufEstimate, maxCost, node.sumCost)) - } -} - -// ReceivedReply adjusts estimated buffer value according to the value included in -// the latest request reply. -func (node *ServerNode) ReceivedReply(reqID, bv uint64) { - node.lock.Lock() - defer node.lock.Unlock() - - now := node.clock.Now() - node.recalcBLE(now) - if bv > node.params.BufLimit { - bv = node.params.BufLimit - } - sc, ok := node.pending[reqID] - if !ok { - return - } - delete(node.pending, reqID) - cc := node.sumCost - sc - newEstimate := uint64(0) - if bv > cc { - newEstimate = bv - cc - } - if newEstimate > node.bufEstimate { - // Note: we never reduce the buffer estimate based on the reported value because - // this can only happen because of the delayed delivery of the latest reply. - // The lowest estimate based on the previous reply can still be considered valid. - node.bufEstimate = newEstimate - } - - node.bufRecharge = node.bufEstimate < node.params.BufLimit - node.lastTime = now - if node.log != nil { - node.log.add(now, fmt.Sprintf("received reqID=%d bufEst=%d reportedBv=%d sumCost=%d oldSumCost=%d", reqID, node.bufEstimate, bv, node.sumCost, sc)) - } -} - -// ResumeFreeze cleans all pending requests and sets the buffer estimate to the -// reported value after resuming from a frozen state -func (node *ServerNode) ResumeFreeze(bv uint64) { - node.lock.Lock() - defer node.lock.Unlock() - - for reqID := range node.pending { - delete(node.pending, reqID) - } - now := node.clock.Now() - node.recalcBLE(now) - if bv > node.params.BufLimit { - bv = node.params.BufLimit - } - node.bufEstimate = bv - node.bufRecharge = node.bufEstimate < node.params.BufLimit - node.lastTime = now - if node.log != nil { - node.log.add(now, fmt.Sprintf("unfreeze bv=%d sumCost=%d", bv, node.sumCost)) - } -} - -// DumpLogs dumps the event log if logging is used -func (node *ServerNode) DumpLogs() { - node.lock.Lock() - defer node.lock.Unlock() - - if node.log != nil { - node.log.dump(node.clock.Now()) - } -} diff --git a/les/flowcontrol/logger.go b/les/flowcontrol/logger.go deleted file mode 100644 index 428d7fbf22..0000000000 --- a/les/flowcontrol/logger.go +++ /dev/null @@ -1,65 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package flowcontrol - -import ( - "fmt" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" -) - -// logger collects events in string format and discards events older than the -// "keep" parameter -type logger struct { - events map[uint64]logEvent - writePtr, delPtr uint64 - keep time.Duration -} - -// logEvent describes a single event -type logEvent struct { - time mclock.AbsTime - event string -} - -// newLogger creates a new logger -func newLogger(keep time.Duration) *logger { - return &logger{ - events: make(map[uint64]logEvent), - keep: keep, - } -} - -// add adds a new event and discards old events if possible -func (l *logger) add(now mclock.AbsTime, event string) { - keepAfter := now - mclock.AbsTime(l.keep) - for l.delPtr < l.writePtr && l.events[l.delPtr].time <= keepAfter { - delete(l.events, l.delPtr) - l.delPtr++ - } - l.events[l.writePtr] = logEvent{now, event} - l.writePtr++ -} - -// dump prints all stored events -func (l *logger) dump(now mclock.AbsTime) { - for i := l.delPtr; i < l.writePtr; i++ { - e := l.events[i] - fmt.Println(time.Duration(e.time-now), e.event) - } -} diff --git a/les/flowcontrol/manager.go b/les/flowcontrol/manager.go deleted file mode 100644 index b7cc9bd903..0000000000 --- a/les/flowcontrol/manager.go +++ /dev/null @@ -1,476 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package flowcontrol - -import ( - "fmt" - "math" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/common/prque" -) - -// cmNodeFields are ClientNode fields used by the client manager -// Note: these fields are locked by the client manager's mutex -type cmNodeFields struct { - corrBufValue int64 // buffer value adjusted with the extra recharge amount - rcLastIntValue int64 // past recharge integrator value when corrBufValue was last updated - rcFullIntValue int64 // future recharge integrator value when corrBufValue will reach maximum - queueIndex int // position in the recharge queue (-1 if not queued) -} - -// FixedPointMultiplier is applied to the recharge integrator and the recharge curve. -// -// Note: fixed point arithmetic is required for the integrator because it is a -// constantly increasing value that can wrap around int64 limits (which behavior is -// also supported by the priority queue). A floating point value would gradually lose -// precision in this application. -// The recharge curve and all recharge values are encoded as fixed point because -// sumRecharge is frequently updated by adding or subtracting individual recharge -// values and perfect precision is required. -const FixedPointMultiplier = 1000000 - -var ( - capacityDropFactor = 0.1 - capacityRaiseTC = 1 / (3 * float64(time.Hour)) // time constant for raising the capacity factor - capacityRaiseThresholdRatio = 1.125 // total/connected capacity ratio threshold for raising the capacity factor -) - -// ClientManager controls the capacity assigned to the clients of a server. -// Since ServerParams guarantee a safe lower estimate for processable requests -// even in case of all clients being active, ClientManager calculates a -// corrugated buffer value and usually allows a higher remaining buffer value -// to be returned with each reply. -type ClientManager struct { - clock mclock.Clock - lock sync.Mutex - stop chan chan struct{} - - curve PieceWiseLinear - sumRecharge, totalRecharge, totalConnected uint64 - logTotalCap, totalCapacity float64 - logTotalCapRaiseLimit float64 - minLogTotalCap, maxLogTotalCap float64 - capacityRaiseThreshold uint64 - capLastUpdate mclock.AbsTime - totalCapacityCh chan uint64 - - // recharge integrator is increasing in each moment with a rate of - // (totalRecharge / sumRecharge)*FixedPointMultiplier or 0 if sumRecharge==0 - rcLastUpdate mclock.AbsTime // last time the recharge integrator was updated - rcLastIntValue int64 // last updated value of the recharge integrator - priorityOffset int64 // offset for prque priority values ensures that all priorities stay in the int64 range - // recharge queue is a priority queue with currently recharging client nodes - // as elements. The priority value is rcFullIntValue which allows to quickly - // determine which client will first finish recharge. - rcQueue *prque.Prque[int64, *ClientNode] -} - -// NewClientManager returns a new client manager. -// Client manager enhances flow control performance by allowing client buffers -// to recharge quicker than the minimum guaranteed recharge rate if possible. -// The sum of all minimum recharge rates (sumRecharge) is updated each time -// a clients starts or finishes buffer recharging. Then an adjusted total -// recharge rate is calculated using a piecewise linear recharge curve: -// -// totalRecharge = curve(sumRecharge) -// (totalRecharge >= sumRecharge is enforced) -// -// Then the "bonus" buffer recharge is distributed between currently recharging -// clients proportionally to their minimum recharge rates. -// -// Note: total recharge is proportional to the average number of parallel running -// serving threads. A recharge value of 1000000 corresponds to one thread in average. -// The maximum number of allowed serving threads should always be considerably -// higher than the targeted average number. -// -// Note 2: although it is possible to specify a curve allowing the total target -// recharge starting from zero sumRecharge, it makes sense to add a linear ramp -// starting from zero in order to not let a single low-priority client use up -// the entire server capacity and thus ensure quick availability for others at -// any moment. -func NewClientManager(curve PieceWiseLinear, clock mclock.Clock) *ClientManager { - cm := &ClientManager{ - clock: clock, - rcQueue: prque.New[int64, *ClientNode](func(a *ClientNode, i int) { a.queueIndex = i }), - capLastUpdate: clock.Now(), - stop: make(chan chan struct{}), - } - if curve != nil { - cm.SetRechargeCurve(curve) - } - go func() { - // regularly recalculate and update total capacity - for { - select { - case <-time.After(time.Minute): - cm.lock.Lock() - cm.updateTotalCapacity(cm.clock.Now(), true) - cm.lock.Unlock() - case stop := <-cm.stop: - close(stop) - return - } - } - }() - return cm -} - -// Stop stops the client manager -func (cm *ClientManager) Stop() { - stop := make(chan struct{}) - cm.stop <- stop - <-stop -} - -// SetRechargeCurve updates the recharge curve -func (cm *ClientManager) SetRechargeCurve(curve PieceWiseLinear) { - cm.lock.Lock() - defer cm.lock.Unlock() - - now := cm.clock.Now() - cm.updateRecharge(now) - cm.curve = curve - if len(curve) > 0 { - cm.totalRecharge = curve[len(curve)-1].Y - } else { - cm.totalRecharge = 0 - } -} - -// SetCapacityLimits sets a threshold value used for raising capFactor. -// Either if the difference between total allowed and connected capacity is less -// than this threshold or if their ratio is less than capacityRaiseThresholdRatio -// then capFactor is allowed to slowly raise. -func (cm *ClientManager) SetCapacityLimits(min, max, raiseThreshold uint64) { - if min < 1 { - min = 1 - } - cm.minLogTotalCap = math.Log(float64(min)) - if max < 1 { - max = 1 - } - cm.maxLogTotalCap = math.Log(float64(max)) - cm.logTotalCap = cm.maxLogTotalCap - cm.capacityRaiseThreshold = raiseThreshold - cm.refreshCapacity() -} - -// connect should be called when a client is connected, before passing it to any -// other ClientManager function -func (cm *ClientManager) connect(node *ClientNode) { - cm.lock.Lock() - defer cm.lock.Unlock() - - now := cm.clock.Now() - cm.updateRecharge(now) - node.corrBufValue = int64(node.params.BufLimit) - node.rcLastIntValue = cm.rcLastIntValue - node.queueIndex = -1 - cm.updateTotalCapacity(now, true) - cm.totalConnected += node.params.MinRecharge - cm.updateRaiseLimit() -} - -// disconnect should be called when a client is disconnected -func (cm *ClientManager) disconnect(node *ClientNode) { - cm.lock.Lock() - defer cm.lock.Unlock() - - now := cm.clock.Now() - cm.updateRecharge(cm.clock.Now()) - cm.updateTotalCapacity(now, true) - cm.totalConnected -= node.params.MinRecharge - cm.updateRaiseLimit() -} - -// accepted is called when a request with given maximum cost is accepted. -// It returns a priority indicator for the request which is used to determine placement -// in the serving queue. Older requests have higher priority by default. If the client -// is almost out of buffer, request priority is reduced. -func (cm *ClientManager) accepted(node *ClientNode, maxCost uint64, now mclock.AbsTime) (priority int64) { - cm.lock.Lock() - defer cm.lock.Unlock() - - cm.updateNodeRc(node, -int64(maxCost), &node.params, now) - rcTime := (node.params.BufLimit - uint64(node.corrBufValue)) * FixedPointMultiplier / node.params.MinRecharge - return -int64(now) - int64(rcTime) -} - -// processed updates the client buffer according to actual request cost after -// serving has been finished. -// -// Note: processed should always be called for all accepted requests -func (cm *ClientManager) processed(node *ClientNode, maxCost, realCost uint64, now mclock.AbsTime) { - if realCost > maxCost { - realCost = maxCost - } - cm.updateBuffer(node, int64(maxCost-realCost), now) -} - -// updateBuffer recalculates the corrected buffer value, adds the given value to it -// and updates the node's actual buffer value if possible -func (cm *ClientManager) updateBuffer(node *ClientNode, add int64, now mclock.AbsTime) { - cm.lock.Lock() - defer cm.lock.Unlock() - - cm.updateNodeRc(node, add, &node.params, now) - if node.corrBufValue > node.bufValue { - if node.log != nil { - node.log.add(now, fmt.Sprintf("corrected bv=%d oldBv=%d", node.corrBufValue, node.bufValue)) - } - node.bufValue = node.corrBufValue - } -} - -// updateParams updates the flow control parameters of a client node -func (cm *ClientManager) updateParams(node *ClientNode, params ServerParams, now mclock.AbsTime) { - cm.lock.Lock() - defer cm.lock.Unlock() - - cm.updateRecharge(now) - cm.updateTotalCapacity(now, true) - cm.totalConnected += params.MinRecharge - node.params.MinRecharge - cm.updateRaiseLimit() - cm.updateNodeRc(node, 0, ¶ms, now) -} - -// updateRaiseLimit recalculates the limiting value until which logTotalCap -// can be raised when no client freeze events occur -func (cm *ClientManager) updateRaiseLimit() { - if cm.capacityRaiseThreshold == 0 { - cm.logTotalCapRaiseLimit = 0 - return - } - limit := float64(cm.totalConnected + cm.capacityRaiseThreshold) - limit2 := float64(cm.totalConnected) * capacityRaiseThresholdRatio - if limit2 > limit { - limit = limit2 - } - if limit < 1 { - limit = 1 - } - cm.logTotalCapRaiseLimit = math.Log(limit) -} - -// updateRecharge updates the recharge integrator and checks the recharge queue -// for nodes with recently filled buffers -func (cm *ClientManager) updateRecharge(now mclock.AbsTime) { - lastUpdate := cm.rcLastUpdate - cm.rcLastUpdate = now - // updating is done in multiple steps if node buffers are filled and sumRecharge - // is decreased before the given target time - for cm.sumRecharge > 0 { - sumRecharge := cm.sumRecharge - if sumRecharge > cm.totalRecharge { - sumRecharge = cm.totalRecharge - } - bonusRatio := float64(1) - v := cm.curve.ValueAt(sumRecharge) - s := float64(sumRecharge) - if v > s && s > 0 { - bonusRatio = v / s - } - dt := now - lastUpdate - // fetch the client that finishes first - rcqNode := cm.rcQueue.PopItem() // if sumRecharge > 0 then the queue cannot be empty - // check whether it has already finished - dtNext := mclock.AbsTime(float64(rcqNode.rcFullIntValue-cm.rcLastIntValue) / bonusRatio) - if dt < dtNext { - // not finished yet, put it back, update integrator according - // to current bonusRatio and return - cm.addToQueue(rcqNode) - cm.rcLastIntValue += int64(bonusRatio * float64(dt)) - return - } - lastUpdate += dtNext - // finished recharging, update corrBufValue and sumRecharge if necessary and do next step - if rcqNode.corrBufValue < int64(rcqNode.params.BufLimit) { - rcqNode.corrBufValue = int64(rcqNode.params.BufLimit) - cm.sumRecharge -= rcqNode.params.MinRecharge - } - cm.rcLastIntValue = rcqNode.rcFullIntValue - } -} - -func (cm *ClientManager) addToQueue(node *ClientNode) { - if cm.priorityOffset-node.rcFullIntValue < -0x4000000000000000 { - cm.priorityOffset += 0x4000000000000000 - // recreate priority queue with new offset to avoid overflow; should happen very rarely - newRcQueue := prque.New[int64, *ClientNode](func(a *ClientNode, i int) { a.queueIndex = i }) - for cm.rcQueue.Size() > 0 { - n := cm.rcQueue.PopItem() - newRcQueue.Push(n, cm.priorityOffset-n.rcFullIntValue) - } - cm.rcQueue = newRcQueue - } - cm.rcQueue.Push(node, cm.priorityOffset-node.rcFullIntValue) -} - -// updateNodeRc updates a node's corrBufValue and adds an external correction value. -// It also adds or removes the rcQueue entry and updates ServerParams and sumRecharge if necessary. -func (cm *ClientManager) updateNodeRc(node *ClientNode, bvc int64, params *ServerParams, now mclock.AbsTime) { - cm.updateRecharge(now) - wasFull := true - if node.corrBufValue != int64(node.params.BufLimit) { - wasFull = false - node.corrBufValue += (cm.rcLastIntValue - node.rcLastIntValue) * int64(node.params.MinRecharge) / FixedPointMultiplier - if node.corrBufValue > int64(node.params.BufLimit) { - node.corrBufValue = int64(node.params.BufLimit) - } - node.rcLastIntValue = cm.rcLastIntValue - } - node.corrBufValue += bvc - diff := int64(params.BufLimit - node.params.BufLimit) - if diff > 0 { - node.corrBufValue += diff - } - isFull := false - if node.corrBufValue >= int64(params.BufLimit) { - node.corrBufValue = int64(params.BufLimit) - isFull = true - } - if !wasFull { - cm.sumRecharge -= node.params.MinRecharge - } - if params != &node.params { - node.params = *params - } - if !isFull { - cm.sumRecharge += node.params.MinRecharge - if node.queueIndex != -1 { - cm.rcQueue.Remove(node.queueIndex) - } - node.rcLastIntValue = cm.rcLastIntValue - node.rcFullIntValue = cm.rcLastIntValue + (int64(node.params.BufLimit)-node.corrBufValue)*FixedPointMultiplier/int64(node.params.MinRecharge) - cm.addToQueue(node) - } -} - -// reduceTotalCapacity reduces the total capacity allowance in case of a client freeze event -func (cm *ClientManager) reduceTotalCapacity(frozenCap uint64) { - cm.lock.Lock() - defer cm.lock.Unlock() - - ratio := float64(1) - if frozenCap < cm.totalConnected { - ratio = float64(frozenCap) / float64(cm.totalConnected) - } - now := cm.clock.Now() - cm.updateTotalCapacity(now, false) - cm.logTotalCap -= capacityDropFactor * ratio - if cm.logTotalCap < cm.minLogTotalCap { - cm.logTotalCap = cm.minLogTotalCap - } - cm.updateTotalCapacity(now, true) -} - -// updateTotalCapacity updates the total capacity factor. The capacity factor allows -// the total capacity of the system to go over the allowed total recharge value -// if clients go to frozen state sufficiently rarely. -// The capacity factor is dropped instantly by a small amount if a clients is frozen. -// It is raised slowly (with a large time constant) if the total connected capacity -// is close to the total allowed amount and no clients are frozen. -func (cm *ClientManager) updateTotalCapacity(now mclock.AbsTime, refresh bool) { - dt := now - cm.capLastUpdate - cm.capLastUpdate = now - - if cm.logTotalCap < cm.logTotalCapRaiseLimit { - cm.logTotalCap += capacityRaiseTC * float64(dt) - if cm.logTotalCap > cm.logTotalCapRaiseLimit { - cm.logTotalCap = cm.logTotalCapRaiseLimit - } - } - if cm.logTotalCap > cm.maxLogTotalCap { - cm.logTotalCap = cm.maxLogTotalCap - } - if refresh { - cm.refreshCapacity() - } -} - -// refreshCapacity recalculates the total capacity value and sends an update to the subscription -// channel if the relative change of the value since the last update is more than 0.1 percent -func (cm *ClientManager) refreshCapacity() { - totalCapacity := math.Exp(cm.logTotalCap) - if totalCapacity >= cm.totalCapacity*0.999 && totalCapacity <= cm.totalCapacity*1.001 { - return - } - cm.totalCapacity = totalCapacity - if cm.totalCapacityCh != nil { - select { - case cm.totalCapacityCh <- uint64(cm.totalCapacity): - default: - } - } -} - -// SubscribeTotalCapacity returns all future updates to the total capacity value -// through a channel and also returns the current value -func (cm *ClientManager) SubscribeTotalCapacity(ch chan uint64) uint64 { - cm.lock.Lock() - defer cm.lock.Unlock() - - cm.totalCapacityCh = ch - return uint64(cm.totalCapacity) -} - -// PieceWiseLinear is used to describe recharge curves -type PieceWiseLinear []struct{ X, Y uint64 } - -// ValueAt returns the curve's value at a given point -func (pwl PieceWiseLinear) ValueAt(x uint64) float64 { - l := 0 - h := len(pwl) - if h == 0 { - return 0 - } - for h != l { - m := (l + h) / 2 - if x > pwl[m].X { - l = m + 1 - } else { - h = m - } - } - if l == 0 { - return float64(pwl[0].Y) - } - l-- - if h == len(pwl) { - return float64(pwl[l].Y) - } - dx := pwl[h].X - pwl[l].X - if dx < 1 { - return float64(pwl[l].Y) - } - return float64(pwl[l].Y) + float64(pwl[h].Y-pwl[l].Y)*float64(x-pwl[l].X)/float64(dx) -} - -// Valid returns true if the X coordinates of the curve points are non-strictly monotonic -func (pwl PieceWiseLinear) Valid() bool { - var lastX uint64 - for _, i := range pwl { - if i.X < lastX { - return false - } - lastX = i.X - } - return true -} diff --git a/les/flowcontrol/manager_test.go b/les/flowcontrol/manager_test.go deleted file mode 100644 index 3afc31272f..0000000000 --- a/les/flowcontrol/manager_test.go +++ /dev/null @@ -1,130 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package flowcontrol - -import ( - "math" - "math/rand" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" -) - -type testNode struct { - node *ClientNode - bufLimit, capacity uint64 - waitUntil mclock.AbsTime - index, totalCost uint64 -} - -const ( - testMaxCost = 1000000 - testLength = 100000 -) - -// testConstantTotalCapacity simulates multiple request sender nodes and verifies -// whether the total amount of served requests matches the expected value based on -// the total capacity and the duration of the test. -// Some nodes are sending requests occasionally so that their buffer should regularly -// reach the maximum while other nodes (the "max capacity nodes") are sending at the -// maximum permitted rate. The max capacity nodes are changed multiple times during -// a single test. -func TestConstantTotalCapacity(t *testing.T) { - testConstantTotalCapacity(t, 10, 1, 0, false) - testConstantTotalCapacity(t, 10, 1, 1, false) - testConstantTotalCapacity(t, 30, 1, 0, false) - testConstantTotalCapacity(t, 30, 2, 3, false) - testConstantTotalCapacity(t, 100, 1, 0, false) - testConstantTotalCapacity(t, 100, 3, 5, false) - testConstantTotalCapacity(t, 100, 5, 10, false) - testConstantTotalCapacity(t, 100, 3, 5, true) -} - -func testConstantTotalCapacity(t *testing.T, nodeCount, maxCapacityNodes, randomSend int, priorityOverflow bool) { - clock := &mclock.Simulated{} - nodes := make([]*testNode, nodeCount) - var totalCapacity uint64 - for i := range nodes { - nodes[i] = &testNode{capacity: uint64(50000 + rand.Intn(100000))} - totalCapacity += nodes[i].capacity - } - m := NewClientManager(PieceWiseLinear{{0, totalCapacity}}, clock) - if priorityOverflow { - // provoke a situation where rcLastUpdate overflow needs to be handled - m.rcLastIntValue = math.MaxInt64 - 10000000000 - } - for _, n := range nodes { - n.bufLimit = n.capacity * 6000 - n.node = NewClientNode(m, ServerParams{BufLimit: n.bufLimit, MinRecharge: n.capacity}) - } - maxNodes := make([]int, maxCapacityNodes) - for i := range maxNodes { - // we don't care if some indexes are selected multiple times - // in that case we have fewer max nodes - maxNodes[i] = rand.Intn(nodeCount) - } - - var sendCount int - for i := 0; i < testLength; i++ { - now := clock.Now() - for _, idx := range maxNodes { - for nodes[idx].send(t, now) { - } - } - if rand.Intn(testLength) < maxCapacityNodes*3 { - maxNodes[rand.Intn(maxCapacityNodes)] = rand.Intn(nodeCount) - } - - sendCount += randomSend - failCount := randomSend * 10 - for sendCount > 0 && failCount > 0 { - if nodes[rand.Intn(nodeCount)].send(t, now) { - sendCount-- - } else { - failCount-- - } - } - clock.Run(time.Millisecond) - } - - var totalCost uint64 - for _, n := range nodes { - totalCost += n.totalCost - } - ratio := float64(totalCost) / float64(totalCapacity) / testLength - if ratio < 0.98 || ratio > 1.02 { - t.Errorf("totalCost/totalCapacity/testLength ratio incorrect (expected: 1, got: %f)", ratio) - } -} - -func (n *testNode) send(t *testing.T, now mclock.AbsTime) bool { - if now < n.waitUntil { - return false - } - n.index++ - if ok, _, _ := n.node.AcceptRequest(0, n.index, testMaxCost); !ok { - t.Fatalf("Rejected request after expected waiting time has passed") - } - rcost := uint64(rand.Int63n(testMaxCost)) - bv := n.node.RequestProcessed(0, n.index, testMaxCost, rcost) - if bv < testMaxCost { - n.waitUntil = now + mclock.AbsTime((testMaxCost-bv)*1001000/n.capacity) - } - n.totalCost += rcost - return true -} diff --git a/les/handler_test.go b/les/handler_test.go deleted file mode 100644 index c803a5ddb3..0000000000 --- a/les/handler_test.go +++ /dev/null @@ -1,754 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "encoding/binary" - "math/big" - "math/rand" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/consensus/ethash" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/txpool" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/eth/downloader" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/rlp" - "github.com/ethereum/go-ethereum/trie" - "github.com/ethereum/go-ethereum/trie/trienode" -) - -func expectResponse(r p2p.MsgReader, msgcode, reqID, bv uint64, data interface{}) error { - type resp struct { - ReqID, BV uint64 - Data interface{} - } - return p2p.ExpectMsg(r, msgcode, resp{reqID, bv, data}) -} - -// Tests that block headers can be retrieved from a remote chain based on user queries. -func TestGetBlockHeadersLes2(t *testing.T) { testGetBlockHeaders(t, 2) } -func TestGetBlockHeadersLes3(t *testing.T) { testGetBlockHeaders(t, 3) } -func TestGetBlockHeadersLes4(t *testing.T) { testGetBlockHeaders(t, 4) } - -func testGetBlockHeaders(t *testing.T, protocol int) { - netconfig := testnetConfig{ - blocks: downloader.MaxHeaderFetch + 15, - protocol: protocol, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - bc := server.handler.blockchain - - // Create a "random" unknown hash for testing - var unknown common.Hash - for i := range unknown { - unknown[i] = byte(i) - } - // Create a batch of tests for various scenarios - limit := uint64(MaxHeaderFetch) - tests := []struct { - query *GetBlockHeadersData // The query to execute for header retrieval - expect []common.Hash // The hashes of the block whose headers are expected - }{ - // A single random block should be retrievable by hash and number too - { - &GetBlockHeadersData{Origin: hashOrNumber{Hash: bc.GetBlockByNumber(limit / 2).Hash()}, Amount: 1}, - []common.Hash{bc.GetBlockByNumber(limit / 2).Hash()}, - }, { - &GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 1}, - []common.Hash{bc.GetBlockByNumber(limit / 2).Hash()}, - }, - // Multiple headers should be retrievable in both directions - { - &GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 3}, - []common.Hash{ - bc.GetBlockByNumber(limit / 2).Hash(), - bc.GetBlockByNumber(limit/2 + 1).Hash(), - bc.GetBlockByNumber(limit/2 + 2).Hash(), - }, - }, { - &GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 3, Reverse: true}, - []common.Hash{ - bc.GetBlockByNumber(limit / 2).Hash(), - bc.GetBlockByNumber(limit/2 - 1).Hash(), - bc.GetBlockByNumber(limit/2 - 2).Hash(), - }, - }, - // Multiple headers with skip lists should be retrievable - { - &GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Skip: 3, Amount: 3}, - []common.Hash{ - bc.GetBlockByNumber(limit / 2).Hash(), - bc.GetBlockByNumber(limit/2 + 4).Hash(), - bc.GetBlockByNumber(limit/2 + 8).Hash(), - }, - }, { - &GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Skip: 3, Amount: 3, Reverse: true}, - []common.Hash{ - bc.GetBlockByNumber(limit / 2).Hash(), - bc.GetBlockByNumber(limit/2 - 4).Hash(), - bc.GetBlockByNumber(limit/2 - 8).Hash(), - }, - }, - // The chain endpoints should be retrievable - { - &GetBlockHeadersData{Origin: hashOrNumber{Number: 0}, Amount: 1}, - []common.Hash{bc.GetBlockByNumber(0).Hash()}, - }, { - &GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().Number.Uint64()}, Amount: 1}, - []common.Hash{bc.CurrentBlock().Hash()}, - }, - // Ensure protocol limits are honored - //{ - // &GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().Number.Uint64()() - 1}, Amount: limit + 10, Reverse: true}, - // []common.Hash{}, - //}, - // Check that requesting more than available is handled gracefully - { - &GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().Number.Uint64() - 4}, Skip: 3, Amount: 3}, - []common.Hash{ - bc.GetBlockByNumber(bc.CurrentBlock().Number.Uint64() - 4).Hash(), - bc.GetBlockByNumber(bc.CurrentBlock().Number.Uint64()).Hash(), - }, - }, { - &GetBlockHeadersData{Origin: hashOrNumber{Number: 4}, Skip: 3, Amount: 3, Reverse: true}, - []common.Hash{ - bc.GetBlockByNumber(4).Hash(), - bc.GetBlockByNumber(0).Hash(), - }, - }, - // Check that requesting more than available is handled gracefully, even if mid skip - { - &GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().Number.Uint64() - 4}, Skip: 2, Amount: 3}, - []common.Hash{ - bc.GetBlockByNumber(bc.CurrentBlock().Number.Uint64() - 4).Hash(), - bc.GetBlockByNumber(bc.CurrentBlock().Number.Uint64() - 1).Hash(), - }, - }, { - &GetBlockHeadersData{Origin: hashOrNumber{Number: 4}, Skip: 2, Amount: 3, Reverse: true}, - []common.Hash{ - bc.GetBlockByNumber(4).Hash(), - bc.GetBlockByNumber(1).Hash(), - }, - }, - // Check that non existing headers aren't returned - { - &GetBlockHeadersData{Origin: hashOrNumber{Hash: unknown}, Amount: 1}, - []common.Hash{}, - }, { - &GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().Number.Uint64() + 1}, Amount: 1}, - []common.Hash{}, - }, - } - // Run each of the tests and verify the results against the chain - var reqID uint64 - for i, tt := range tests { - // Collect the headers to expect in the response - var headers []*types.Header - for _, hash := range tt.expect { - headers = append(headers, bc.GetHeaderByHash(hash)) - } - // Send the hash request and verify the response - reqID++ - - sendRequest(rawPeer.app, GetBlockHeadersMsg, reqID, tt.query) - if err := expectResponse(rawPeer.app, BlockHeadersMsg, reqID, testBufLimit, headers); err != nil { - t.Errorf("test %d: headers mismatch: %v", i, err) - } - } -} - -// Tests that block contents can be retrieved from a remote chain based on their hashes. -func TestGetBlockBodiesLes2(t *testing.T) { testGetBlockBodies(t, 2) } -func TestGetBlockBodiesLes3(t *testing.T) { testGetBlockBodies(t, 3) } -func TestGetBlockBodiesLes4(t *testing.T) { testGetBlockBodies(t, 4) } - -func testGetBlockBodies(t *testing.T, protocol int) { - netconfig := testnetConfig{ - blocks: downloader.MaxHeaderFetch + 15, - protocol: protocol, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - bc := server.handler.blockchain - - // Create a batch of tests for various scenarios - limit := MaxBodyFetch - tests := []struct { - random int // Number of blocks to fetch randomly from the chain - explicit []common.Hash // Explicitly requested blocks - available []bool // Availability of explicitly requested blocks - expected int // Total number of existing blocks to expect - }{ - {1, nil, nil, 1}, // A single random block should be retrievable - {10, nil, nil, 10}, // Multiple random blocks should be retrievable - {limit, nil, nil, limit}, // The maximum possible blocks should be retrievable - //{limit + 1, nil, nil, limit}, // No more than the possible block count should be returned - {0, []common.Hash{bc.Genesis().Hash()}, []bool{true}, 1}, // The genesis block should be retrievable - {0, []common.Hash{bc.CurrentBlock().Hash()}, []bool{true}, 1}, // The chains head block should be retrievable - {0, []common.Hash{{}}, []bool{false}, 0}, // A non existent block should not be returned - - // Existing and non-existing blocks interleaved should not cause problems - {0, []common.Hash{ - {}, - bc.GetBlockByNumber(1).Hash(), - {}, - bc.GetBlockByNumber(10).Hash(), - {}, - bc.GetBlockByNumber(100).Hash(), - {}, - }, []bool{false, true, false, true, false, true, false}, 3}, - } - // Run each of the tests and verify the results against the chain - var reqID uint64 - for i, tt := range tests { - // Collect the hashes to request, and the response to expect - var hashes []common.Hash - seen := make(map[int64]bool) - var bodies []*types.Body - - for j := 0; j < tt.random; j++ { - for { - num := rand.Int63n(int64(bc.CurrentBlock().Number.Uint64())) - if !seen[num] { - seen[num] = true - - block := bc.GetBlockByNumber(uint64(num)) - hashes = append(hashes, block.Hash()) - if len(bodies) < tt.expected { - bodies = append(bodies, &types.Body{Transactions: block.Transactions(), Uncles: block.Uncles()}) - } - break - } - } - } - for j, hash := range tt.explicit { - hashes = append(hashes, hash) - if tt.available[j] && len(bodies) < tt.expected { - block := bc.GetBlockByHash(hash) - bodies = append(bodies, &types.Body{Transactions: block.Transactions(), Uncles: block.Uncles()}) - } - } - reqID++ - - // Send the hash request and verify the response - sendRequest(rawPeer.app, GetBlockBodiesMsg, reqID, hashes) - if err := expectResponse(rawPeer.app, BlockBodiesMsg, reqID, testBufLimit, bodies); err != nil { - t.Errorf("test %d: bodies mismatch: %v", i, err) - } - } -} - -// Tests that the contract codes can be retrieved based on account addresses. -func TestGetCodeLes2(t *testing.T) { testGetCode(t, 2) } -func TestGetCodeLes3(t *testing.T) { testGetCode(t, 3) } -func TestGetCodeLes4(t *testing.T) { testGetCode(t, 4) } - -func testGetCode(t *testing.T, protocol int) { - // Assemble the test environment - netconfig := testnetConfig{ - blocks: 4, - protocol: protocol, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - bc := server.handler.blockchain - - var codereqs []*CodeReq - var codes [][]byte - for i := uint64(0); i <= bc.CurrentBlock().Number.Uint64(); i++ { - header := bc.GetHeaderByNumber(i) - req := &CodeReq{ - BHash: header.Hash(), - AccountAddress: testContractAddr[:], - } - codereqs = append(codereqs, req) - if i >= testContractDeployed { - codes = append(codes, testContractCodeDeployed) - } - } - - sendRequest(rawPeer.app, GetCodeMsg, 42, codereqs) - if err := expectResponse(rawPeer.app, CodeMsg, 42, testBufLimit, codes); err != nil { - t.Errorf("codes mismatch: %v", err) - } -} - -// Tests that the stale contract codes can't be retrieved based on account addresses. -func TestGetStaleCodeLes2(t *testing.T) { testGetStaleCode(t, 2) } -func TestGetStaleCodeLes3(t *testing.T) { testGetStaleCode(t, 3) } -func TestGetStaleCodeLes4(t *testing.T) { testGetStaleCode(t, 4) } - -func testGetStaleCode(t *testing.T, protocol int) { - netconfig := testnetConfig{ - blocks: core.TriesInMemory + 4, - protocol: protocol, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - bc := server.handler.blockchain - - check := func(number uint64, expected [][]byte) { - req := &CodeReq{ - BHash: bc.GetHeaderByNumber(number).Hash(), - AccountAddress: testContractAddr[:], - } - sendRequest(rawPeer.app, GetCodeMsg, 42, []*CodeReq{req}) - if err := expectResponse(rawPeer.app, CodeMsg, 42, testBufLimit, expected); err != nil { - t.Errorf("codes mismatch: %v", err) - } - } - check(0, [][]byte{}) // Non-exist contract - check(testContractDeployed, [][]byte{}) // Stale contract - check(bc.CurrentHeader().Number.Uint64(), [][]byte{testContractCodeDeployed}) // Fresh contract -} - -// Tests that the transaction receipts can be retrieved based on hashes. -func TestGetReceiptLes2(t *testing.T) { testGetReceipt(t, 2) } -func TestGetReceiptLes3(t *testing.T) { testGetReceipt(t, 3) } -func TestGetReceiptLes4(t *testing.T) { testGetReceipt(t, 4) } - -func testGetReceipt(t *testing.T, protocol int) { - // Assemble the test environment - netconfig := testnetConfig{ - blocks: 4, - protocol: protocol, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - bc := server.handler.blockchain - - // Collect the hashes to request, and the response to expect - var receipts []types.Receipts - var hashes []common.Hash - for i := uint64(0); i <= bc.CurrentBlock().Number.Uint64(); i++ { - block := bc.GetBlockByNumber(i) - - hashes = append(hashes, block.Hash()) - receipts = append(receipts, rawdb.ReadReceipts(server.db, block.Hash(), block.NumberU64(), block.Time(), bc.Config())) - } - // Send the hash request and verify the response - sendRequest(rawPeer.app, GetReceiptsMsg, 42, hashes) - if err := expectResponse(rawPeer.app, ReceiptsMsg, 42, testBufLimit, receipts); err != nil { - t.Errorf("receipts mismatch: %v", err) - } -} - -// Tests that trie merkle proofs can be retrieved -func TestGetProofsLes2(t *testing.T) { testGetProofs(t, 2) } -func TestGetProofsLes3(t *testing.T) { testGetProofs(t, 3) } -func TestGetProofsLes4(t *testing.T) { testGetProofs(t, 4) } - -func testGetProofs(t *testing.T, protocol int) { - // Assemble the test environment - netconfig := testnetConfig{ - blocks: 4, - protocol: protocol, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - bc := server.handler.blockchain - - var proofreqs []ProofReq - proofsV2 := trienode.NewProofSet() - - accounts := []common.Address{bankAddr, userAddr1, userAddr2, signerAddr, {}} - for i := uint64(0); i <= bc.CurrentBlock().Number.Uint64(); i++ { - header := bc.GetHeaderByNumber(i) - trie, _ := trie.New(trie.StateTrieID(header.Root), server.backend.Blockchain().TrieDB()) - - for _, acc := range accounts { - req := ProofReq{ - BHash: header.Hash(), - Key: crypto.Keccak256(acc[:]), - } - proofreqs = append(proofreqs, req) - trie.Prove(crypto.Keccak256(acc[:]), proofsV2) - } - } - // Send the proof request and verify the response - sendRequest(rawPeer.app, GetProofsV2Msg, 42, proofreqs) - if err := expectResponse(rawPeer.app, ProofsV2Msg, 42, testBufLimit, proofsV2.List()); err != nil { - t.Errorf("proofs mismatch: %v", err) - } -} - -// Tests that the stale contract codes can't be retrieved based on account addresses. -func TestGetStaleProofLes2(t *testing.T) { testGetStaleProof(t, 2) } -func TestGetStaleProofLes3(t *testing.T) { testGetStaleProof(t, 3) } -func TestGetStaleProofLes4(t *testing.T) { testGetStaleProof(t, 4) } - -func testGetStaleProof(t *testing.T, protocol int) { - netconfig := testnetConfig{ - blocks: core.TriesInMemory + 4, - protocol: protocol, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - bc := server.handler.blockchain - - check := func(number uint64, wantOK bool) { - var ( - header = bc.GetHeaderByNumber(number) - account = crypto.Keccak256(userAddr1.Bytes()) - ) - req := &ProofReq{ - BHash: header.Hash(), - Key: account, - } - sendRequest(rawPeer.app, GetProofsV2Msg, 42, []*ProofReq{req}) - - var expected []rlp.RawValue - if wantOK { - proofsV2 := trienode.NewProofSet() - t, _ := trie.New(trie.StateTrieID(header.Root), server.backend.Blockchain().TrieDB()) - t.Prove(account, proofsV2) - expected = proofsV2.List() - } - if err := expectResponse(rawPeer.app, ProofsV2Msg, 42, testBufLimit, expected); err != nil { - t.Errorf("codes mismatch: %v", err) - } - } - check(0, false) // Non-exist proof - check(2, false) // Stale proof - check(bc.CurrentHeader().Number.Uint64(), true) // Fresh proof -} - -// Tests that CHT proofs can be correctly retrieved. -func TestGetCHTProofsLes2(t *testing.T) { testGetCHTProofs(t, 2) } -func TestGetCHTProofsLes3(t *testing.T) { testGetCHTProofs(t, 3) } -func TestGetCHTProofsLes4(t *testing.T) { testGetCHTProofs(t, 4) } - -func testGetCHTProofs(t *testing.T, protocol int) { - var ( - config = light.TestServerIndexerConfig - waitIndexers = func(cIndexer, bIndexer, btIndexer *core.ChainIndexer) { - for { - cs, _, _ := cIndexer.Sections() - if cs >= 1 { - break - } - time.Sleep(10 * time.Millisecond) - } - } - netconfig = testnetConfig{ - blocks: int(config.ChtSize + config.ChtConfirms), - protocol: protocol, - indexFn: waitIndexers, - nopruning: true, - } - ) - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - bc := server.handler.blockchain - - // Assemble the proofs from the different protocols - header := bc.GetHeaderByNumber(config.ChtSize - 1) - rlp, _ := rlp.EncodeToBytes(header) - - key := make([]byte, 8) - binary.BigEndian.PutUint64(key, config.ChtSize-1) - - proofsV2 := HelperTrieResps{ - AuxData: [][]byte{rlp}, - } - root := light.GetChtRoot(server.db, 0, bc.GetHeaderByNumber(config.ChtSize-1).Hash()) - trie, _ := trie.New(trie.TrieID(root), trie.NewDatabase(rawdb.NewTable(server.db, string(rawdb.ChtTablePrefix)), trie.HashDefaults)) - trie.Prove(key, &proofsV2.Proofs) - // Assemble the requests for the different protocols - requestsV2 := []HelperTrieReq{{ - Type: htCanonical, - TrieIdx: 0, - Key: key, - AuxReq: htAuxHeader, - }} - // Send the proof request and verify the response - sendRequest(rawPeer.app, GetHelperTrieProofsMsg, 42, requestsV2) - if err := expectResponse(rawPeer.app, HelperTrieProofsMsg, 42, testBufLimit, proofsV2); err != nil { - t.Errorf("proofs mismatch: %v", err) - } -} - -func TestGetBloombitsProofsLes2(t *testing.T) { testGetBloombitsProofs(t, 2) } -func TestGetBloombitsProofsLes3(t *testing.T) { testGetBloombitsProofs(t, 3) } -func TestGetBloombitsProofsLes4(t *testing.T) { testGetBloombitsProofs(t, 4) } - -// Tests that bloombits proofs can be correctly retrieved. -func testGetBloombitsProofs(t *testing.T, protocol int) { - var ( - config = light.TestServerIndexerConfig - waitIndexers = func(cIndexer, bIndexer, btIndexer *core.ChainIndexer) { - for { - bts, _, _ := btIndexer.Sections() - if bts >= 1 { - break - } - time.Sleep(10 * time.Millisecond) - } - } - netconfig = testnetConfig{ - blocks: int(config.BloomTrieSize + config.BloomTrieConfirms), - protocol: protocol, - indexFn: waitIndexers, - nopruning: true, - } - ) - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - bc := server.handler.blockchain - - // Request and verify each bit of the bloom bits proofs - for bit := 0; bit < 2048; bit++ { - // Assemble the request and proofs for the bloombits - key := make([]byte, 10) - - binary.BigEndian.PutUint16(key[:2], uint16(bit)) - // Only the first bloom section has data. - binary.BigEndian.PutUint64(key[2:], 0) - - requests := []HelperTrieReq{{ - Type: htBloomBits, - TrieIdx: 0, - Key: key, - }} - var proofs HelperTrieResps - - root := light.GetBloomTrieRoot(server.db, 0, bc.GetHeaderByNumber(config.BloomTrieSize-1).Hash()) - trie, _ := trie.New(trie.TrieID(root), trie.NewDatabase(rawdb.NewTable(server.db, string(rawdb.BloomTrieTablePrefix)), trie.HashDefaults)) - trie.Prove(key, &proofs.Proofs) - - // Send the proof request and verify the response - sendRequest(rawPeer.app, GetHelperTrieProofsMsg, 42, requests) - if err := expectResponse(rawPeer.app, HelperTrieProofsMsg, 42, testBufLimit, proofs); err != nil { - t.Errorf("bit %d: proofs mismatch: %v", bit, err) - } - } -} - -func TestTransactionStatusLes2(t *testing.T) { testTransactionStatus(t, lpv2) } -func TestTransactionStatusLes3(t *testing.T) { testTransactionStatus(t, lpv3) } -func TestTransactionStatusLes4(t *testing.T) { testTransactionStatus(t, lpv4) } - -func testTransactionStatus(t *testing.T, protocol int) { - netconfig := testnetConfig{ - protocol: protocol, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - server.handler.addTxsSync = true - - chain := server.handler.blockchain - - var reqID uint64 - - test := func(tx *types.Transaction, send bool, expStatus light.TxStatus) { - t.Helper() - - reqID++ - if send { - sendRequest(rawPeer.app, SendTxV2Msg, reqID, types.Transactions{tx}) - } else { - sendRequest(rawPeer.app, GetTxStatusMsg, reqID, []common.Hash{tx.Hash()}) - } - if err := expectResponse(rawPeer.app, TxStatusMsg, reqID, testBufLimit, []light.TxStatus{expStatus}); err != nil { - t.Errorf("transaction status mismatch: %v", err) - } - } - signer := types.HomesteadSigner{} - - // test error status by sending an underpriced transaction - tx0, _ := types.SignTx(types.NewTransaction(0, userAddr1, big.NewInt(10000), params.TxGas, nil, nil), signer, bankKey) - test(tx0, true, light.TxStatus{Status: txpool.TxStatusUnknown, Error: "transaction underpriced: tip needed 1, tip permitted 0"}) - - tx1, _ := types.SignTx(types.NewTransaction(0, userAddr1, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, bankKey) - test(tx1, false, light.TxStatus{Status: txpool.TxStatusUnknown}) // query before sending, should be unknown - test(tx1, true, light.TxStatus{Status: txpool.TxStatusPending}) // send valid processable tx, should return pending - test(tx1, true, light.TxStatus{Status: txpool.TxStatusPending}) // adding it again should not return an error - - tx2, _ := types.SignTx(types.NewTransaction(1, userAddr1, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, bankKey) - tx3, _ := types.SignTx(types.NewTransaction(2, userAddr1, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, bankKey) - // send transactions in the wrong order, tx3 should be queued - test(tx3, true, light.TxStatus{Status: txpool.TxStatusQueued}) - test(tx2, true, light.TxStatus{Status: txpool.TxStatusPending}) - // query again, now tx3 should be pending too - test(tx3, false, light.TxStatus{Status: txpool.TxStatusPending}) - - // generate and add a block with tx1 and tx2 included - gchain, _ := core.GenerateChain(params.TestChainConfig, chain.GetBlockByNumber(0), ethash.NewFaker(), server.db, 1, func(i int, block *core.BlockGen) { - block.AddTx(tx1) - block.AddTx(tx2) - }) - if _, err := chain.InsertChain(gchain); err != nil { - panic(err) - } - // wait until TxPool processes the inserted block - for i := 0; i < 10; i++ { - if pending, _ := server.handler.txpool.Stats(); pending == 1 { - break - } - time.Sleep(100 * time.Millisecond) - } - if pending, _ := server.handler.txpool.Stats(); pending != 1 { - t.Fatalf("pending count mismatch: have %d, want 1", pending) - } - // Discard new block announcement - msg, _ := rawPeer.app.ReadMsg() - msg.Discard() - - // check if their status is included now - block1hash := rawdb.ReadCanonicalHash(server.db, 1) - test(tx1, false, light.TxStatus{Status: txpool.TxStatusIncluded, Lookup: &rawdb.LegacyTxLookupEntry{BlockHash: block1hash, BlockIndex: 1, Index: 0}}) - - test(tx2, false, light.TxStatus{Status: txpool.TxStatusIncluded, Lookup: &rawdb.LegacyTxLookupEntry{BlockHash: block1hash, BlockIndex: 1, Index: 1}}) - - // create a reorg that rolls them back - gchain, _ = core.GenerateChain(params.TestChainConfig, chain.GetBlockByNumber(0), ethash.NewFaker(), server.db, 2, func(i int, block *core.BlockGen) {}) - if _, err := chain.InsertChain(gchain); err != nil { - panic(err) - } - // wait until TxPool processes the reorg - for i := 0; i < 10; i++ { - if pending, _ := server.handler.txpool.Stats(); pending == 3 { - break - } - time.Sleep(100 * time.Millisecond) - } - if pending, _ := server.handler.txpool.Stats(); pending != 3 { - t.Fatalf("pending count mismatch: have %d, want 3", pending) - } - // Discard new block announcement - msg, _ = rawPeer.app.ReadMsg() - msg.Discard() - - // check if their status is pending again - test(tx1, false, light.TxStatus{Status: txpool.TxStatusPending}) - test(tx2, false, light.TxStatus{Status: txpool.TxStatusPending}) -} - -func TestStopResumeLES3(t *testing.T) { testStopResume(t, lpv3) } -func TestStopResumeLES4(t *testing.T) { testStopResume(t, lpv4) } - -func testStopResume(t *testing.T, protocol int) { - netconfig := testnetConfig{ - protocol: protocol, - simClock: true, - nopruning: true, - } - server, _, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - server.handler.server.costTracker.testing = true - server.handler.server.costTracker.testCostList = testCostList(testBufLimit / 10) - - rawPeer, closePeer, _ := server.newRawPeer(t, "peer", protocol) - defer closePeer() - - var ( - reqID uint64 - expBuf = testBufLimit - testCost = testBufLimit / 10 - ) - header := server.handler.blockchain.CurrentHeader() - req := func() { - reqID++ - sendRequest(rawPeer.app, GetBlockHeadersMsg, reqID, &GetBlockHeadersData{Origin: hashOrNumber{Hash: header.Hash()}, Amount: 1}) - } - for i := 1; i <= 5; i++ { - // send requests while we still have enough buffer and expect a response - for expBuf >= testCost { - req() - expBuf -= testCost - if err := expectResponse(rawPeer.app, BlockHeadersMsg, reqID, expBuf, []*types.Header{header}); err != nil { - t.Errorf("expected response and failed: %v", err) - } - } - // send some more requests in excess and expect a single StopMsg - c := i - for c > 0 { - req() - c-- - } - if err := p2p.ExpectMsg(rawPeer.app, StopMsg, nil); err != nil { - t.Errorf("expected StopMsg and failed: %v", err) - } - // wait until the buffer is recharged by half of the limit - wait := testBufLimit / testBufRecharge / 2 - server.clock.(*mclock.Simulated).Run(time.Millisecond * time.Duration(wait)) - - // expect a ResumeMsg with the partially recharged buffer value - expBuf += testBufRecharge * wait - if err := p2p.ExpectMsg(rawPeer.app, ResumeMsg, expBuf); err != nil { - t.Errorf("expected ResumeMsg and failed: %v", err) - } - } -} diff --git a/les/metrics.go b/les/metrics.go deleted file mode 100644 index 07d3133c95..0000000000 --- a/les/metrics.go +++ /dev/null @@ -1,151 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "github.com/ethereum/go-ethereum/metrics" - "github.com/ethereum/go-ethereum/p2p" -) - -var ( - miscInPacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/total", nil) - miscInTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/total", nil) - miscInHeaderPacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/header", nil) - miscInHeaderTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/header", nil) - miscInBodyPacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/body", nil) - miscInBodyTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/body", nil) - miscInCodePacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/code", nil) - miscInCodeTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/code", nil) - miscInReceiptPacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/receipt", nil) - miscInReceiptTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/receipt", nil) - miscInTrieProofPacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/proof", nil) - miscInTrieProofTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/proof", nil) - miscInHelperTriePacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/helperTrie", nil) - miscInHelperTrieTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/helperTrie", nil) - miscInTxsPacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/txs", nil) - miscInTxsTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/txs", nil) - miscInTxStatusPacketsMeter = metrics.NewRegisteredMeter("les/misc/in/packets/txStatus", nil) - miscInTxStatusTrafficMeter = metrics.NewRegisteredMeter("les/misc/in/traffic/txStatus", nil) - - miscOutPacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/total", nil) - miscOutTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/total", nil) - miscOutHeaderPacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/header", nil) - miscOutHeaderTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/header", nil) - miscOutBodyPacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/body", nil) - miscOutBodyTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/body", nil) - miscOutCodePacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/code", nil) - miscOutCodeTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/code", nil) - miscOutReceiptPacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/receipt", nil) - miscOutReceiptTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/receipt", nil) - miscOutTrieProofPacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/proof", nil) - miscOutTrieProofTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/proof", nil) - miscOutHelperTriePacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/helperTrie", nil) - miscOutHelperTrieTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/helperTrie", nil) - miscOutTxsPacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/txs", nil) - miscOutTxsTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/txs", nil) - miscOutTxStatusPacketsMeter = metrics.NewRegisteredMeter("les/misc/out/packets/txStatus", nil) - miscOutTxStatusTrafficMeter = metrics.NewRegisteredMeter("les/misc/out/traffic/txStatus", nil) - - miscServingTimeHeaderTimer = metrics.NewRegisteredTimer("les/misc/serve/header", nil) - miscServingTimeBodyTimer = metrics.NewRegisteredTimer("les/misc/serve/body", nil) - miscServingTimeCodeTimer = metrics.NewRegisteredTimer("les/misc/serve/code", nil) - miscServingTimeReceiptTimer = metrics.NewRegisteredTimer("les/misc/serve/receipt", nil) - miscServingTimeTrieProofTimer = metrics.NewRegisteredTimer("les/misc/serve/proof", nil) - miscServingTimeHelperTrieTimer = metrics.NewRegisteredTimer("les/misc/serve/helperTrie", nil) - miscServingTimeTxTimer = metrics.NewRegisteredTimer("les/misc/serve/txs", nil) - miscServingTimeTxStatusTimer = metrics.NewRegisteredTimer("les/misc/serve/txStatus", nil) - - connectionTimer = metrics.NewRegisteredTimer("les/connection/duration", nil) - serverConnectionGauge = metrics.NewRegisteredGauge("les/connection/server", nil) - - totalCapacityGauge = metrics.NewRegisteredGauge("les/server/totalCapacity", nil) - totalRechargeGauge = metrics.NewRegisteredGauge("les/server/totalRecharge", nil) - blockProcessingTimer = metrics.NewRegisteredTimer("les/server/blockProcessingTime", nil) - - requestServedMeter = metrics.NewRegisteredMeter("les/server/req/avgServedTime", nil) - requestServedTimer = metrics.NewRegisteredTimer("les/server/req/servedTime", nil) - requestEstimatedMeter = metrics.NewRegisteredMeter("les/server/req/avgEstimatedTime", nil) - requestEstimatedTimer = metrics.NewRegisteredTimer("les/server/req/estimatedTime", nil) - relativeCostHistogram = metrics.NewRegisteredHistogram("les/server/req/relative", nil, metrics.NewExpDecaySample(1028, 0.015)) - relativeCostHeaderHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/header", nil, metrics.NewExpDecaySample(1028, 0.015)) - relativeCostBodyHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/body", nil, metrics.NewExpDecaySample(1028, 0.015)) - relativeCostReceiptHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/receipt", nil, metrics.NewExpDecaySample(1028, 0.015)) - relativeCostCodeHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/code", nil, metrics.NewExpDecaySample(1028, 0.015)) - relativeCostProofHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/proof", nil, metrics.NewExpDecaySample(1028, 0.015)) - relativeCostHelperProofHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/helperTrie", nil, metrics.NewExpDecaySample(1028, 0.015)) - relativeCostSendTxHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/txs", nil, metrics.NewExpDecaySample(1028, 0.015)) - relativeCostTxStatusHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/txStatus", nil, metrics.NewExpDecaySample(1028, 0.015)) - - globalFactorGauge = metrics.NewRegisteredGauge("les/server/globalFactor", nil) - recentServedGauge = metrics.NewRegisteredGauge("les/server/recentRequestServed", nil) - recentEstimatedGauge = metrics.NewRegisteredGauge("les/server/recentRequestEstimated", nil) - sqServedGauge = metrics.NewRegisteredGauge("les/server/servingQueue/served", nil) - sqQueuedGauge = metrics.NewRegisteredGauge("les/server/servingQueue/queued", nil) - - clientFreezeMeter = metrics.NewRegisteredMeter("les/server/clientEvent/freeze", nil) - clientErrorMeter = metrics.NewRegisteredMeter("les/server/clientEvent/error", nil) - - requestRTT = metrics.NewRegisteredTimer("les/client/req/rtt", nil) - requestSendDelay = metrics.NewRegisteredTimer("les/client/req/sendDelay", nil) - - serverSelectableGauge = metrics.NewRegisteredGauge("les/client/serverPool/selectable", nil) - serverDialedMeter = metrics.NewRegisteredMeter("les/client/serverPool/dialed", nil) - serverConnectedGauge = metrics.NewRegisteredGauge("les/client/serverPool/connected", nil) - sessionValueMeter = metrics.NewRegisteredMeter("les/client/serverPool/sessionValue", nil) - totalValueGauge = metrics.NewRegisteredGauge("les/client/serverPool/totalValue", nil) - suggestedTimeoutGauge = metrics.NewRegisteredGauge("les/client/serverPool/timeout", nil) -) - -// meteredMsgReadWriter is a wrapper around a p2p.MsgReadWriter, capable of -// accumulating the above defined metrics based on the data stream contents. -type meteredMsgReadWriter struct { - p2p.MsgReadWriter // Wrapped message stream to meter - version int // Protocol version to select correct meters -} - -// newMeteredMsgWriter wraps a p2p MsgReadWriter with metering support. If the -// metrics system is disabled, this function returns the original object. -func newMeteredMsgWriter(rw p2p.MsgReadWriter, version int) p2p.MsgReadWriter { - if !metrics.Enabled { - return rw - } - return &meteredMsgReadWriter{MsgReadWriter: rw, version: version} -} - -func (rw *meteredMsgReadWriter) ReadMsg() (p2p.Msg, error) { - // Read the message and short circuit in case of an error - msg, err := rw.MsgReadWriter.ReadMsg() - if err != nil { - return msg, err - } - // Account for the data traffic - packets, traffic := miscInPacketsMeter, miscInTrafficMeter - packets.Mark(1) - traffic.Mark(int64(msg.Size)) - - return msg, err -} - -func (rw *meteredMsgReadWriter) WriteMsg(msg p2p.Msg) error { - // Account for the data traffic - packets, traffic := miscOutPacketsMeter, miscOutTrafficMeter - packets.Mark(1) - traffic.Mark(int64(msg.Size)) - - // Send the packet to the p2p layer - return rw.MsgReadWriter.WriteMsg(msg) -} diff --git a/les/odr.go b/les/odr.go deleted file mode 100644 index 943b05fdfc..0000000000 --- a/les/odr.go +++ /dev/null @@ -1,237 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "context" - "math/rand" - "sort" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/txpool" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/light" -) - -// LesOdr implements light.OdrBackend -type LesOdr struct { - db ethdb.Database - indexerConfig *light.IndexerConfig - chtIndexer, bloomTrieIndexer, bloomIndexer *core.ChainIndexer - peers *serverPeerSet - retriever *retrieveManager - stop chan struct{} -} - -func NewLesOdr(db ethdb.Database, config *light.IndexerConfig, peers *serverPeerSet, retriever *retrieveManager) *LesOdr { - return &LesOdr{ - db: db, - indexerConfig: config, - peers: peers, - retriever: retriever, - stop: make(chan struct{}), - } -} - -// Stop cancels all pending retrievals -func (odr *LesOdr) Stop() { - close(odr.stop) -} - -// Database returns the backing database -func (odr *LesOdr) Database() ethdb.Database { - return odr.db -} - -// SetIndexers adds the necessary chain indexers to the ODR backend -func (odr *LesOdr) SetIndexers(chtIndexer, bloomTrieIndexer, bloomIndexer *core.ChainIndexer) { - odr.chtIndexer = chtIndexer - odr.bloomTrieIndexer = bloomTrieIndexer - odr.bloomIndexer = bloomIndexer -} - -// ChtIndexer returns the CHT chain indexer -func (odr *LesOdr) ChtIndexer() *core.ChainIndexer { - return odr.chtIndexer -} - -// BloomTrieIndexer returns the bloom trie chain indexer -func (odr *LesOdr) BloomTrieIndexer() *core.ChainIndexer { - return odr.bloomTrieIndexer -} - -// BloomIndexer returns the bloombits chain indexer -func (odr *LesOdr) BloomIndexer() *core.ChainIndexer { - return odr.bloomIndexer -} - -// IndexerConfig returns the indexer config. -func (odr *LesOdr) IndexerConfig() *light.IndexerConfig { - return odr.indexerConfig -} - -const ( - MsgBlockHeaders = iota - MsgBlockBodies - MsgCode - MsgReceipts - MsgProofsV2 - MsgHelperTrieProofs - MsgTxStatus -) - -// Msg encodes a LES message that delivers reply data for a request -type Msg struct { - MsgType int - ReqID uint64 - Obj interface{} -} - -// peerByTxHistory is a heap.Interface implementation which can sort -// the peerset by transaction history. -type peerByTxHistory []*serverPeer - -func (h peerByTxHistory) Len() int { return len(h) } -func (h peerByTxHistory) Less(i, j int) bool { - if h[i].txHistory == txIndexUnlimited { - return false - } - if h[j].txHistory == txIndexUnlimited { - return true - } - return h[i].txHistory < h[j].txHistory -} -func (h peerByTxHistory) Swap(i, j int) { h[i], h[j] = h[j], h[i] } - -const ( - maxTxStatusRetry = 3 // The maximum retries will be made for tx status request. - maxTxStatusCandidates = 5 // The maximum les servers the tx status requests will be sent to. -) - -// RetrieveTxStatus retrieves the transaction status from the LES network. -// There is no guarantee in the LES protocol that the mined transaction will -// be retrieved back for sure because of different reasons(the transaction -// is unindexed, the malicious server doesn't reply it deliberately, etc). -// Therefore, unretrieved transactions(UNKNOWN) will receive a certain number -// of retries, thus giving a weak guarantee. -func (odr *LesOdr) RetrieveTxStatus(ctx context.Context, req *light.TxStatusRequest) error { - // Sort according to the transaction history supported by the peer and - // select the peers with longest history. - var ( - retries int - peers []*serverPeer - missing = len(req.Hashes) - result = make([]light.TxStatus, len(req.Hashes)) - canSend = make(map[string]bool) - ) - for _, peer := range odr.peers.allPeers() { - if peer.txHistory == txIndexDisabled { - continue - } - peers = append(peers, peer) - } - sort.Sort(sort.Reverse(peerByTxHistory(peers))) - for i := 0; i < maxTxStatusCandidates && i < len(peers); i++ { - canSend[peers[i].id] = true - } - // Send out the request and assemble the result. - for { - if retries >= maxTxStatusRetry || len(canSend) == 0 { - break - } - var ( - // Deep copy the request, so that the partial result won't be mixed. - req = &TxStatusRequest{Hashes: req.Hashes} - id = rand.Uint64() - distreq = &distReq{ - getCost: func(dp distPeer) uint64 { return req.GetCost(dp.(*serverPeer)) }, - canSend: func(dp distPeer) bool { return canSend[dp.(*serverPeer).id] }, - request: func(dp distPeer) func() { - p := dp.(*serverPeer) - p.fcServer.QueuedRequest(id, req.GetCost(p)) - delete(canSend, p.id) - return func() { req.Request(id, p) } - }, - } - ) - if err := odr.retriever.retrieve(ctx, id, distreq, func(p distPeer, msg *Msg) error { return req.Validate(odr.db, msg) }, odr.stop); err != nil { - return err - } - // Collect the response and assemble them to the final result. - // All the response is not verifiable, so always pick the first - // one we get. - for index, status := range req.Status { - if result[index].Status != txpool.TxStatusUnknown { - continue - } - if status.Status == txpool.TxStatusUnknown { - continue - } - result[index], missing = status, missing-1 - } - // Abort the procedure if all the status are retrieved - if missing == 0 { - break - } - retries += 1 - } - req.Status = result - return nil -} - -// Retrieve tries to fetch an object from the LES network. It's a common API -// for most of the LES requests except for the TxStatusRequest which needs -// the additional retry mechanism. -// If the network retrieval was successful, it stores the object in local db. -func (odr *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err error) { - lreq := LesRequest(req) - - reqID := rand.Uint64() - rq := &distReq{ - getCost: func(dp distPeer) uint64 { - return lreq.GetCost(dp.(*serverPeer)) - }, - canSend: func(dp distPeer) bool { - p := dp.(*serverPeer) - if !p.onlyAnnounce { - return lreq.CanSend(p) - } - return false - }, - request: func(dp distPeer) func() { - p := dp.(*serverPeer) - cost := lreq.GetCost(p) - p.fcServer.QueuedRequest(reqID, cost) - return func() { lreq.Request(reqID, p) } - }, - } - - defer func(sent mclock.AbsTime) { - if err != nil { - return - } - requestRTT.Update(time.Duration(mclock.Now() - sent)) - }(mclock.Now()) - - if err := odr.retriever.retrieve(ctx, reqID, rq, func(p distPeer, msg *Msg) error { return lreq.Validate(odr.db, msg) }, odr.stop); err != nil { - return err - } - req.StoreResult(odr.db) - return nil -} diff --git a/les/odr_requests.go b/les/odr_requests.go deleted file mode 100644 index c907018590..0000000000 --- a/les/odr_requests.go +++ /dev/null @@ -1,537 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "encoding/binary" - "errors" - "fmt" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/rlp" - "github.com/ethereum/go-ethereum/trie" - "github.com/ethereum/go-ethereum/trie/trienode" -) - -var ( - errInvalidMessageType = errors.New("invalid message type") - errInvalidEntryCount = errors.New("invalid number of response entries") - errHeaderUnavailable = errors.New("header unavailable") - errTxHashMismatch = errors.New("transaction hash mismatch") - errUncleHashMismatch = errors.New("uncle hash mismatch") - errReceiptHashMismatch = errors.New("receipt hash mismatch") - errDataHashMismatch = errors.New("data hash mismatch") - errCHTHashMismatch = errors.New("cht hash mismatch") - errCHTNumberMismatch = errors.New("cht number mismatch") - errUselessNodes = errors.New("useless nodes in merkle proof nodeset") -) - -type LesOdrRequest interface { - GetCost(*serverPeer) uint64 - CanSend(*serverPeer) bool - Request(uint64, *serverPeer) error - Validate(ethdb.Database, *Msg) error -} - -func LesRequest(req light.OdrRequest) LesOdrRequest { - switch r := req.(type) { - case *light.BlockRequest: - return (*BlockRequest)(r) - case *light.ReceiptsRequest: - return (*ReceiptsRequest)(r) - case *light.TrieRequest: - return (*TrieRequest)(r) - case *light.CodeRequest: - return (*CodeRequest)(r) - case *light.ChtRequest: - return (*ChtRequest)(r) - case *light.BloomRequest: - return (*BloomRequest)(r) - case *light.TxStatusRequest: - return (*TxStatusRequest)(r) - default: - return nil - } -} - -// BlockRequest is the ODR request type for block bodies -type BlockRequest light.BlockRequest - -// GetCost returns the cost of the given ODR request according to the serving -// peer's cost table (implementation of LesOdrRequest) -func (r *BlockRequest) GetCost(peer *serverPeer) uint64 { - return peer.getRequestCost(GetBlockBodiesMsg, 1) -} - -// CanSend tells if a certain peer is suitable for serving the given request -func (r *BlockRequest) CanSend(peer *serverPeer) bool { - return peer.HasBlock(r.Hash, r.Number, false) -} - -// Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (r *BlockRequest) Request(reqID uint64, peer *serverPeer) error { - peer.Log().Debug("Requesting block body", "hash", r.Hash) - return peer.requestBodies(reqID, []common.Hash{r.Hash}) -} - -// Validate processes an ODR request reply message from the LES network -// returns true and stores results in memory if the message was a valid reply -// to the request (implementation of LesOdrRequest) -func (r *BlockRequest) Validate(db ethdb.Database, msg *Msg) error { - log.Debug("Validating block body", "hash", r.Hash) - - // Ensure we have a correct message with a single block body - if msg.MsgType != MsgBlockBodies { - return errInvalidMessageType - } - bodies := msg.Obj.([]*types.Body) - if len(bodies) != 1 { - return errInvalidEntryCount - } - body := bodies[0] - - // Retrieve our stored header and validate block content against it - if r.Header == nil { - r.Header = rawdb.ReadHeader(db, r.Hash, r.Number) - } - if r.Header == nil { - return errHeaderUnavailable - } - if r.Header.TxHash != types.DeriveSha(types.Transactions(body.Transactions), trie.NewStackTrie(nil)) { - return errTxHashMismatch - } - if r.Header.UncleHash != types.CalcUncleHash(body.Uncles) { - return errUncleHashMismatch - } - // Validations passed, encode and store RLP - data, err := rlp.EncodeToBytes(body) - if err != nil { - return err - } - r.Rlp = data - return nil -} - -// ReceiptsRequest is the ODR request type for block receipts by block hash -type ReceiptsRequest light.ReceiptsRequest - -// GetCost returns the cost of the given ODR request according to the serving -// peer's cost table (implementation of LesOdrRequest) -func (r *ReceiptsRequest) GetCost(peer *serverPeer) uint64 { - return peer.getRequestCost(GetReceiptsMsg, 1) -} - -// CanSend tells if a certain peer is suitable for serving the given request -func (r *ReceiptsRequest) CanSend(peer *serverPeer) bool { - return peer.HasBlock(r.Hash, r.Number, false) -} - -// Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (r *ReceiptsRequest) Request(reqID uint64, peer *serverPeer) error { - peer.Log().Debug("Requesting block receipts", "hash", r.Hash) - return peer.requestReceipts(reqID, []common.Hash{r.Hash}) -} - -// Validate processes an ODR request reply message from the LES network -// returns true and stores results in memory if the message was a valid reply -// to the request (implementation of LesOdrRequest) -func (r *ReceiptsRequest) Validate(db ethdb.Database, msg *Msg) error { - log.Debug("Validating block receipts", "hash", r.Hash) - - // Ensure we have a correct message with a single block receipt - if msg.MsgType != MsgReceipts { - return errInvalidMessageType - } - receipts := msg.Obj.([]types.Receipts) - if len(receipts) != 1 { - return errInvalidEntryCount - } - receipt := receipts[0] - - // Retrieve our stored header and validate receipt content against it - if r.Header == nil { - r.Header = rawdb.ReadHeader(db, r.Hash, r.Number) - } - if r.Header == nil { - return errHeaderUnavailable - } - if r.Header.ReceiptHash != types.DeriveSha(receipt, trie.NewStackTrie(nil)) { - return errReceiptHashMismatch - } - // Validations passed, store and return - r.Receipts = receipt - return nil -} - -type ProofReq struct { - BHash common.Hash - AccountAddress, Key []byte - FromLevel uint -} - -// ODR request type for state/storage trie entries, see LesOdrRequest interface -type TrieRequest light.TrieRequest - -// GetCost returns the cost of the given ODR request according to the serving -// peer's cost table (implementation of LesOdrRequest) -func (r *TrieRequest) GetCost(peer *serverPeer) uint64 { - return peer.getRequestCost(GetProofsV2Msg, 1) -} - -// CanSend tells if a certain peer is suitable for serving the given request -func (r *TrieRequest) CanSend(peer *serverPeer) bool { - return peer.HasBlock(r.Id.BlockHash, r.Id.BlockNumber, true) -} - -// Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (r *TrieRequest) Request(reqID uint64, peer *serverPeer) error { - peer.Log().Debug("Requesting trie proof", "root", r.Id.Root, "key", r.Key) - req := ProofReq{ - BHash: r.Id.BlockHash, - AccountAddress: r.Id.AccountAddress, - Key: r.Key, - } - return peer.requestProofs(reqID, []ProofReq{req}) -} - -// Validate processes an ODR request reply message from the LES network -// returns true and stores results in memory if the message was a valid reply -// to the request (implementation of LesOdrRequest) -func (r *TrieRequest) Validate(db ethdb.Database, msg *Msg) error { - log.Debug("Validating trie proof", "root", r.Id.Root, "key", r.Key) - - if msg.MsgType != MsgProofsV2 { - return errInvalidMessageType - } - proofs := msg.Obj.(trienode.ProofList) - // Verify the proof and store if checks out - nodeSet := proofs.Set() - reads := &readTraceDB{db: nodeSet} - if _, err := trie.VerifyProof(r.Id.Root, r.Key, reads); err != nil { - return fmt.Errorf("merkle proof verification failed: %v", err) - } - // check if all nodes have been read by VerifyProof - if len(reads.reads) != nodeSet.KeyCount() { - return errUselessNodes - } - r.Proof = nodeSet - return nil -} - -type CodeReq struct { - BHash common.Hash - AccountAddress []byte -} - -// CodeRequest is the ODR request type for node data (used for retrieving contract code), see LesOdrRequest interface -type CodeRequest light.CodeRequest - -// GetCost returns the cost of the given ODR request according to the serving -// peer's cost table (implementation of LesOdrRequest) -func (r *CodeRequest) GetCost(peer *serverPeer) uint64 { - return peer.getRequestCost(GetCodeMsg, 1) -} - -// CanSend tells if a certain peer is suitable for serving the given request -func (r *CodeRequest) CanSend(peer *serverPeer) bool { - return peer.HasBlock(r.Id.BlockHash, r.Id.BlockNumber, true) -} - -// Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (r *CodeRequest) Request(reqID uint64, peer *serverPeer) error { - peer.Log().Debug("Requesting code data", "hash", r.Hash) - req := CodeReq{ - BHash: r.Id.BlockHash, - AccountAddress: r.Id.AccountAddress, - } - return peer.requestCode(reqID, []CodeReq{req}) -} - -// Validate processes an ODR request reply message from the LES network -// returns true and stores results in memory if the message was a valid reply -// to the request (implementation of LesOdrRequest) -func (r *CodeRequest) Validate(db ethdb.Database, msg *Msg) error { - log.Debug("Validating code data", "hash", r.Hash) - - // Ensure we have a correct message with a single code element - if msg.MsgType != MsgCode { - return errInvalidMessageType - } - reply := msg.Obj.([][]byte) - if len(reply) != 1 { - return errInvalidEntryCount - } - data := reply[0] - - // Verify the data and store if checks out - if hash := crypto.Keccak256Hash(data); r.Hash != hash { - return errDataHashMismatch - } - r.Data = data - return nil -} - -const ( - // helper trie type constants - htCanonical = iota // Canonical hash trie - htBloomBits // BloomBits trie - - // helper trie auxiliary types - // htAuxNone = 1 ; deprecated number, used in les2/3 previously. - htAuxHeader = 2 // applicable for htCanonical, requests for relevant headers -) - -type HelperTrieReq struct { - Type uint - TrieIdx uint64 - Key []byte - FromLevel, AuxReq uint -} - -type HelperTrieResps struct { // describes all responses, not just a single one - Proofs trienode.ProofList - AuxData [][]byte -} - -// ChtRequest is the ODR request type for requesting headers by Canonical Hash Trie, see LesOdrRequest interface -type ChtRequest light.ChtRequest - -// GetCost returns the cost of the given ODR request according to the serving -// peer's cost table (implementation of LesOdrRequest) -func (r *ChtRequest) GetCost(peer *serverPeer) uint64 { - return peer.getRequestCost(GetHelperTrieProofsMsg, 1) -} - -// CanSend tells if a certain peer is suitable for serving the given request -func (r *ChtRequest) CanSend(peer *serverPeer) bool { - peer.lock.RLock() - defer peer.lock.RUnlock() - - return peer.headInfo.Number >= r.Config.ChtConfirms && r.ChtNum <= (peer.headInfo.Number-r.Config.ChtConfirms)/r.Config.ChtSize -} - -// Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (r *ChtRequest) Request(reqID uint64, peer *serverPeer) error { - peer.Log().Debug("Requesting CHT", "cht", r.ChtNum, "block", r.BlockNum) - var encNum [8]byte - binary.BigEndian.PutUint64(encNum[:], r.BlockNum) - req := HelperTrieReq{ - Type: htCanonical, - TrieIdx: r.ChtNum, - Key: encNum[:], - AuxReq: htAuxHeader, - } - return peer.requestHelperTrieProofs(reqID, []HelperTrieReq{req}) -} - -// Validate processes an ODR request reply message from the LES network -// returns true and stores results in memory if the message was a valid reply -// to the request (implementation of LesOdrRequest) -func (r *ChtRequest) Validate(db ethdb.Database, msg *Msg) error { - log.Debug("Validating CHT", "cht", r.ChtNum, "block", r.BlockNum) - - if msg.MsgType != MsgHelperTrieProofs { - return errInvalidMessageType - } - resp := msg.Obj.(HelperTrieResps) - if len(resp.AuxData) != 1 { - return errInvalidEntryCount - } - nodeSet := resp.Proofs.Set() - headerEnc := resp.AuxData[0] - if len(headerEnc) == 0 { - return errHeaderUnavailable - } - header := new(types.Header) - if err := rlp.DecodeBytes(headerEnc, header); err != nil { - return errHeaderUnavailable - } - // Verify the CHT - var ( - node light.ChtNode - encNumber [8]byte - ) - binary.BigEndian.PutUint64(encNumber[:], r.BlockNum) - - reads := &readTraceDB{db: nodeSet} - value, err := trie.VerifyProof(r.ChtRoot, encNumber[:], reads) - if err != nil { - return fmt.Errorf("merkle proof verification failed: %v", err) - } - if len(reads.reads) != nodeSet.KeyCount() { - return errUselessNodes - } - if err := rlp.DecodeBytes(value, &node); err != nil { - return err - } - if node.Hash != header.Hash() { - return errCHTHashMismatch - } - if r.BlockNum != header.Number.Uint64() { - return errCHTNumberMismatch - } - // Verifications passed, store and return - r.Header = header - r.Proof = nodeSet - r.Td = node.Td - return nil -} - -type BloomReq struct { - BloomTrieNum, BitIdx, SectionIndex, FromLevel uint64 -} - -// BloomRequest is the ODR request type for requesting headers by Canonical Hash Trie, see LesOdrRequest interface -type BloomRequest light.BloomRequest - -// GetCost returns the cost of the given ODR request according to the serving -// peer's cost table (implementation of LesOdrRequest) -func (r *BloomRequest) GetCost(peer *serverPeer) uint64 { - return peer.getRequestCost(GetHelperTrieProofsMsg, len(r.SectionIndexList)) -} - -// CanSend tells if a certain peer is suitable for serving the given request -func (r *BloomRequest) CanSend(peer *serverPeer) bool { - peer.lock.RLock() - defer peer.lock.RUnlock() - - if peer.version < lpv2 { - return false - } - return peer.headInfo.Number >= r.Config.BloomTrieConfirms && r.BloomTrieNum <= (peer.headInfo.Number-r.Config.BloomTrieConfirms)/r.Config.BloomTrieSize -} - -// Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (r *BloomRequest) Request(reqID uint64, peer *serverPeer) error { - peer.Log().Debug("Requesting BloomBits", "bloomTrie", r.BloomTrieNum, "bitIdx", r.BitIdx, "sections", r.SectionIndexList) - reqs := make([]HelperTrieReq, len(r.SectionIndexList)) - - var encNumber [10]byte - binary.BigEndian.PutUint16(encNumber[:2], uint16(r.BitIdx)) - - for i, sectionIdx := range r.SectionIndexList { - binary.BigEndian.PutUint64(encNumber[2:], sectionIdx) - reqs[i] = HelperTrieReq{ - Type: htBloomBits, - TrieIdx: r.BloomTrieNum, - Key: common.CopyBytes(encNumber[:]), - } - } - return peer.requestHelperTrieProofs(reqID, reqs) -} - -// Validate processes an ODR request reply message from the LES network -// returns true and stores results in memory if the message was a valid reply -// to the request (implementation of LesOdrRequest) -func (r *BloomRequest) Validate(db ethdb.Database, msg *Msg) error { - log.Debug("Validating BloomBits", "bloomTrie", r.BloomTrieNum, "bitIdx", r.BitIdx, "sections", r.SectionIndexList) - - // Ensure we have a correct message with a single proof element - if msg.MsgType != MsgHelperTrieProofs { - return errInvalidMessageType - } - resps := msg.Obj.(HelperTrieResps) - proofs := resps.Proofs - nodeSet := proofs.Set() - reads := &readTraceDB{db: nodeSet} - - r.BloomBits = make([][]byte, len(r.SectionIndexList)) - - // Verify the proofs - var encNumber [10]byte - binary.BigEndian.PutUint16(encNumber[:2], uint16(r.BitIdx)) - - for i, idx := range r.SectionIndexList { - binary.BigEndian.PutUint64(encNumber[2:], idx) - value, err := trie.VerifyProof(r.BloomTrieRoot, encNumber[:], reads) - if err != nil { - return err - } - r.BloomBits[i] = value - } - - if len(reads.reads) != nodeSet.KeyCount() { - return errUselessNodes - } - r.Proofs = nodeSet - return nil -} - -// TxStatusRequest is the ODR request type for transaction status -type TxStatusRequest light.TxStatusRequest - -// GetCost returns the cost of the given ODR request according to the serving -// peer's cost table (implementation of LesOdrRequest) -func (r *TxStatusRequest) GetCost(peer *serverPeer) uint64 { - return peer.getRequestCost(GetTxStatusMsg, len(r.Hashes)) -} - -// CanSend tells if a certain peer is suitable for serving the given request -func (r *TxStatusRequest) CanSend(peer *serverPeer) bool { - return peer.txHistory != txIndexDisabled -} - -// Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (r *TxStatusRequest) Request(reqID uint64, peer *serverPeer) error { - peer.Log().Debug("Requesting transaction status", "count", len(r.Hashes)) - return peer.requestTxStatus(reqID, r.Hashes) -} - -// Validate processes an ODR request reply message from the LES network -// returns true and stores results in memory if the message was a valid reply -// to the request (implementation of LesOdrRequest) -func (r *TxStatusRequest) Validate(db ethdb.Database, msg *Msg) error { - log.Debug("Validating transaction status", "count", len(r.Hashes)) - - if msg.MsgType != MsgTxStatus { - return errInvalidMessageType - } - status := msg.Obj.([]light.TxStatus) - if len(status) != len(r.Hashes) { - return errInvalidEntryCount - } - r.Status = status - return nil -} - -// readTraceDB stores the keys of database reads. We use this to check that received node -// sets contain only the trie nodes necessary to make proofs pass. -type readTraceDB struct { - db ethdb.KeyValueReader - reads map[string]struct{} -} - -// Get returns a stored node -func (db *readTraceDB) Get(k []byte) ([]byte, error) { - if db.reads == nil { - db.reads = make(map[string]struct{}) - } - db.reads[string(k)] = struct{}{} - return db.db.Get(k) -} - -// Has returns true if the node set contains the given key -func (db *readTraceDB) Has(key []byte) (bool, error) { - _, err := db.Get(key) - return err == nil, nil -} diff --git a/les/odr_test.go b/les/odr_test.go deleted file mode 100644 index 69824a92dd..0000000000 --- a/les/odr_test.go +++ /dev/null @@ -1,458 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -// Note: these tests are disabled now because they cannot work with the old sync -// mechanism removed but will be useful again once the PoS ultralight mode is implemented - -/* -import ( - "bytes" - "context" - "crypto/rand" - "fmt" - "math/big" - "reflect" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/math" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/state" - "github.com/ethereum/go-ethereum/core/txpool" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/core/vm" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/rlp" -) - -type odrTestFn func(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte - -func TestOdrGetBlockLes2(t *testing.T) { testOdr(t, 2, 1, true, odrGetBlock) } -func TestOdrGetBlockLes3(t *testing.T) { testOdr(t, 3, 1, true, odrGetBlock) } -func TestOdrGetBlockLes4(t *testing.T) { testOdr(t, 4, 1, true, odrGetBlock) } - -func odrGetBlock(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte { - var block *types.Block - if bc != nil { - block = bc.GetBlockByHash(bhash) - } else { - block, _ = lc.GetBlockByHash(ctx, bhash) - } - if block == nil { - return nil - } - rlp, _ := rlp.EncodeToBytes(block) - return rlp -} - -func TestOdrGetReceiptsLes2(t *testing.T) { testOdr(t, 2, 1, true, odrGetReceipts) } -func TestOdrGetReceiptsLes3(t *testing.T) { testOdr(t, 3, 1, true, odrGetReceipts) } -func TestOdrGetReceiptsLes4(t *testing.T) { testOdr(t, 4, 1, true, odrGetReceipts) } - -func odrGetReceipts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte { - var receipts types.Receipts - if bc != nil { - if number := rawdb.ReadHeaderNumber(db, bhash); number != nil { - if header := rawdb.ReadHeader(db, bhash, *number); header != nil { - receipts = rawdb.ReadReceipts(db, bhash, *number, header.Time, config) - } - } - } else { - if number := rawdb.ReadHeaderNumber(db, bhash); number != nil { - receipts, _ = light.GetBlockReceipts(ctx, lc.Odr(), bhash, *number) - } - } - if receipts == nil { - return nil - } - rlp, _ := rlp.EncodeToBytes(receipts) - return rlp -} - -func TestOdrAccountsLes2(t *testing.T) { testOdr(t, 2, 1, true, odrAccounts) } -func TestOdrAccountsLes3(t *testing.T) { testOdr(t, 3, 1, true, odrAccounts) } -func TestOdrAccountsLes4(t *testing.T) { testOdr(t, 4, 1, true, odrAccounts) } - -func odrAccounts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte { - dummyAddr := common.HexToAddress("1234567812345678123456781234567812345678") - acc := []common.Address{bankAddr, userAddr1, userAddr2, dummyAddr} - - var ( - res []byte - st *state.StateDB - err error - ) - for _, addr := range acc { - if bc != nil { - header := bc.GetHeaderByHash(bhash) - st, err = state.New(header.Root, bc.StateCache(), nil) - } else { - header := lc.GetHeaderByHash(bhash) - st = light.NewState(ctx, header, lc.Odr()) - } - if err == nil { - bal := st.GetBalance(addr) - rlp, _ := rlp.EncodeToBytes(bal) - res = append(res, rlp...) - } - } - return res -} - -func TestOdrContractCallLes2(t *testing.T) { testOdr(t, 2, 2, true, odrContractCall) } -func TestOdrContractCallLes3(t *testing.T) { testOdr(t, 3, 2, true, odrContractCall) } -func TestOdrContractCallLes4(t *testing.T) { testOdr(t, 4, 2, true, odrContractCall) } - -func odrContractCall(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte { - data := common.Hex2Bytes("60CD26850000000000000000000000000000000000000000000000000000000000000000") - - var res []byte - for i := 0; i < 3; i++ { - data[35] = byte(i) - if bc != nil { - header := bc.GetHeaderByHash(bhash) - statedb, err := state.New(header.Root, bc.StateCache(), nil) - - if err == nil { - from := statedb.GetOrNewStateObject(bankAddr) - from.SetBalance(math.MaxBig256) - - msg := &core.Message{ - From: from.Address(), - To: &testContractAddr, - Value: new(big.Int), - GasLimit: 100000, - GasPrice: big.NewInt(params.InitialBaseFee), - GasFeeCap: big.NewInt(params.InitialBaseFee), - GasTipCap: new(big.Int), - Data: data, - SkipAccountChecks: true, - } - - context := core.NewEVMBlockContext(header, bc, nil) - txContext := core.NewEVMTxContext(msg) - vmenv := vm.NewEVM(context, txContext, statedb, config, vm.Config{NoBaseFee: true}) - - //vmenv := core.NewEnv(statedb, config, bc, msg, header, vm.Config{}) - gp := new(core.GasPool).AddGas(math.MaxUint64) - result, _ := core.ApplyMessage(vmenv, msg, gp) - res = append(res, result.Return()...) - } - } else { - header := lc.GetHeaderByHash(bhash) - state := light.NewState(ctx, header, lc.Odr()) - state.SetBalance(bankAddr, math.MaxBig256) - msg := &core.Message{ - From: bankAddr, - To: &testContractAddr, - Value: new(big.Int), - GasLimit: 100000, - GasPrice: big.NewInt(params.InitialBaseFee), - GasFeeCap: big.NewInt(params.InitialBaseFee), - GasTipCap: new(big.Int), - Data: data, - SkipAccountChecks: true, - } - context := core.NewEVMBlockContext(header, lc, nil) - txContext := core.NewEVMTxContext(msg) - vmenv := vm.NewEVM(context, txContext, state, config, vm.Config{NoBaseFee: true}) - gp := new(core.GasPool).AddGas(math.MaxUint64) - result, _ := core.ApplyMessage(vmenv, msg, gp) - if state.Error() == nil { - res = append(res, result.Return()...) - } - } - } - return res -} - -func TestOdrTxStatusLes2(t *testing.T) { testOdr(t, 2, 1, false, odrTxStatus) } -func TestOdrTxStatusLes3(t *testing.T) { testOdr(t, 3, 1, false, odrTxStatus) } -func TestOdrTxStatusLes4(t *testing.T) { testOdr(t, 4, 1, false, odrTxStatus) } - -func odrTxStatus(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte { - var txs types.Transactions - if bc != nil { - block := bc.GetBlockByHash(bhash) - txs = block.Transactions() - } else { - if block, _ := lc.GetBlockByHash(ctx, bhash); block != nil { - btxs := block.Transactions() - txs = make(types.Transactions, len(btxs)) - for i, tx := range btxs { - var err error - txs[i], _, _, _, err = light.GetTransaction(ctx, lc.Odr(), tx.Hash()) - if err != nil { - return nil - } - } - } - } - rlp, _ := rlp.EncodeToBytes(txs) - return rlp -} - -// testOdr tests odr requests whose validation guaranteed by block headers. -func testOdr(t *testing.T, protocol int, expFail uint64, checkCached bool, fn odrTestFn) { - // Assemble the test environment - netconfig := testnetConfig{ - blocks: 4, - protocol: protocol, - connect: true, - nopruning: true, - } - server, client, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - // Ensure the client has synced all necessary data. - clientHead := client.handler.backend.blockchain.CurrentHeader() - if clientHead.Number.Uint64() != 4 { - t.Fatalf("Failed to sync the chain with server, head: %v", clientHead.Number.Uint64()) - } - // Disable the mechanism that we will wait a few time for request - // even there is no suitable peer to send right now. - waitForPeers = 0 - - test := func(expFail uint64) { - // Mark this as a helper to put the failures at the correct lines - t.Helper() - - for i := uint64(0); i <= server.handler.blockchain.CurrentHeader().Number.Uint64(); i++ { - bhash := rawdb.ReadCanonicalHash(server.db, i) - b1 := fn(light.NoOdr, server.db, server.handler.server.chainConfig, server.handler.blockchain, nil, bhash) - - // Set the timeout as 1 second here, ensure there is enough time - // for travis to make the action. - ctx, cancel := context.WithTimeout(context.Background(), time.Second) - b2 := fn(ctx, client.db, client.handler.backend.chainConfig, nil, client.handler.backend.blockchain, bhash) - cancel() - - eq := bytes.Equal(b1, b2) - exp := i < expFail - if exp && !eq { - t.Fatalf("odr mismatch: have %x, want %x", b2, b1) - } - if !exp && eq { - t.Fatalf("unexpected odr match") - } - } - } - - // expect retrievals to fail (except genesis block) without a les peer - client.handler.backend.peers.lock.Lock() - client.peer.speer.hasBlockHook = func(common.Hash, uint64, bool) bool { return false } - client.handler.backend.peers.lock.Unlock() - test(expFail) - - // expect all retrievals to pass - client.handler.backend.peers.lock.Lock() - client.peer.speer.hasBlockHook = func(common.Hash, uint64, bool) bool { return true } - client.handler.backend.peers.lock.Unlock() - test(5) - - // still expect all retrievals to pass, now data should be cached locally - if checkCached { - client.handler.backend.peers.unregister(client.peer.speer.id) - time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed - test(5) - } -} - -func TestGetTxStatusFromUnindexedPeersLES4(t *testing.T) { testGetTxStatusFromUnindexedPeers(t, lpv4) } - -func testGetTxStatusFromUnindexedPeers(t *testing.T, protocol int) { - var ( - blocks = 8 - netconfig = testnetConfig{ - blocks: blocks, - protocol: protocol, - nopruning: true, - } - ) - server, client, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - // Iterate the chain, create the tx indexes locally - var ( - testHash common.Hash - testStatus light.TxStatus - - txs = make(map[common.Hash]*types.Transaction) // Transaction objects set - blockNumbers = make(map[common.Hash]uint64) // Transaction hash to block number mappings - blockHashes = make(map[common.Hash]common.Hash) // Transaction hash to block hash mappings - intraIndex = make(map[common.Hash]uint64) // Transaction intra-index in block - ) - for number := uint64(1); number < server.backend.Blockchain().CurrentBlock().Number.Uint64(); number++ { - block := server.backend.Blockchain().GetBlockByNumber(number) - if block == nil { - t.Fatalf("Failed to retrieve block %d", number) - } - for index, tx := range block.Transactions() { - txs[tx.Hash()] = tx - blockNumbers[tx.Hash()] = number - blockHashes[tx.Hash()] = block.Hash() - intraIndex[tx.Hash()] = uint64(index) - - if testHash == (common.Hash{}) { - testHash = tx.Hash() - testStatus = light.TxStatus{ - Status: txpool.TxStatusIncluded, - Lookup: &rawdb.LegacyTxLookupEntry{ - BlockHash: block.Hash(), - BlockIndex: block.NumberU64(), - Index: uint64(index), - }, - } - } - } - } - // serveMsg processes incoming GetTxStatusMsg and sends the response back. - serveMsg := func(peer *testPeer, txLookup uint64) error { - msg, err := peer.app.ReadMsg() - if err != nil { - return err - } - if msg.Code != GetTxStatusMsg { - return fmt.Errorf("message code mismatch: got %d, expected %d", msg.Code, GetTxStatusMsg) - } - var r GetTxStatusPacket - if err := msg.Decode(&r); err != nil { - return err - } - stats := make([]light.TxStatus, len(r.Hashes)) - for i, hash := range r.Hashes { - number, exist := blockNumbers[hash] - if !exist { - continue // Filter out unknown transactions - } - min := uint64(blocks) - txLookup - if txLookup != txIndexUnlimited && (txLookup == txIndexDisabled || number < min) { - continue // Filter out unindexed transactions - } - stats[i].Status = txpool.TxStatusIncluded - stats[i].Lookup = &rawdb.LegacyTxLookupEntry{ - BlockHash: blockHashes[hash], - BlockIndex: number, - Index: intraIndex[hash], - } - } - data, _ := rlp.EncodeToBytes(stats) - reply := &reply{peer.app, TxStatusMsg, r.ReqID, data} - reply.send(testBufLimit) - return nil - } - - var testspecs = []struct { - peers int - txLookups []uint64 - txs []common.Hash - results []light.TxStatus - }{ - // Retrieve mined transaction from the empty peerset - { - peers: 0, - txLookups: []uint64{}, - txs: []common.Hash{testHash}, - results: []light.TxStatus{{}}, - }, - // Retrieve unknown transaction from the full peers - { - peers: 3, - txLookups: []uint64{txIndexUnlimited, txIndexUnlimited, txIndexUnlimited}, - txs: []common.Hash{randomHash()}, - results: []light.TxStatus{{}}, - }, - // Retrieve mined transaction from the full peers - { - peers: 3, - txLookups: []uint64{txIndexUnlimited, txIndexUnlimited, txIndexUnlimited}, - txs: []common.Hash{testHash}, - results: []light.TxStatus{testStatus}, - }, - // Retrieve mixed transactions from the full peers - { - peers: 3, - txLookups: []uint64{txIndexUnlimited, txIndexUnlimited, txIndexUnlimited}, - txs: []common.Hash{randomHash(), testHash}, - results: []light.TxStatus{{}, testStatus}, - }, - // Retrieve mixed transactions from unindexed peer(but the target is still available) - { - peers: 3, - txLookups: []uint64{uint64(blocks) - testStatus.Lookup.BlockIndex, uint64(blocks) - testStatus.Lookup.BlockIndex - 1, uint64(blocks) - testStatus.Lookup.BlockIndex - 2}, - txs: []common.Hash{randomHash(), testHash}, - results: []light.TxStatus{{}, testStatus}, - }, - // Retrieve mixed transactions from unindexed peer(but the target is not available) - { - peers: 3, - txLookups: []uint64{uint64(blocks) - testStatus.Lookup.BlockIndex - 1, uint64(blocks) - testStatus.Lookup.BlockIndex - 1, uint64(blocks) - testStatus.Lookup.BlockIndex - 2}, - txs: []common.Hash{randomHash(), testHash}, - results: []light.TxStatus{{}, {}}, - }, - } - for _, testspec := range testspecs { - // Create a bunch of server peers with different tx history - var ( - closeFns []func() - ) - for i := 0; i < testspec.peers; i++ { - peer, closePeer, _ := client.newRawPeer(t, fmt.Sprintf("server-%d", i), protocol, testspec.txLookups[i]) - closeFns = append(closeFns, closePeer) - - // Create a one-time routine for serving message - go func(i int, peer *testPeer, lookup uint64) { - serveMsg(peer, lookup) - }(i, peer, testspec.txLookups[i]) - } - - // Send out the GetTxStatus requests, compare the result with - // expected value. - r := &light.TxStatusRequest{Hashes: testspec.txs} - ctx, cancel := context.WithTimeout(context.Background(), time.Second) - defer cancel() - - err := client.handler.backend.odr.RetrieveTxStatus(ctx, r) - if err != nil { - t.Errorf("Failed to retrieve tx status %v", err) - } else { - if !reflect.DeepEqual(testspec.results, r.Status) { - t.Errorf("Result mismatch, diff") - } - } - - // Close all connected peers and start the next round - for _, closeFn := range closeFns { - closeFn() - } - } -} - -// randomHash generates a random blob of data and returns it as a hash. -func randomHash() common.Hash { - var hash common.Hash - if n, err := rand.Read(hash[:]); n != common.HashLength || err != nil { - panic(err) - } - return hash -} -*/ diff --git a/les/peer.go b/les/peer.go deleted file mode 100644 index b38a393d4c..0000000000 --- a/les/peer.go +++ /dev/null @@ -1,1362 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "crypto/ecdsa" - "errors" - "fmt" - "math/big" - "math/rand" - "net" - "sync" - "sync/atomic" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/forkid" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/les/flowcontrol" - "github.com/ethereum/go-ethereum/les/utils" - vfc "github.com/ethereum/go-ethereum/les/vflux/client" - vfs "github.com/ethereum/go-ethereum/les/vflux/server" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/rlp" - "github.com/ethereum/go-ethereum/trie/trienode" -) - -var ( - errClosed = errors.New("peer set is closed") - errAlreadyRegistered = errors.New("peer is already registered") - errNotRegistered = errors.New("peer is not registered") -) - -const ( - maxRequestErrors = 20 // number of invalid requests tolerated (makes the protocol less brittle but still avoids spam) - maxResponseErrors = 50 // number of invalid responses tolerated (makes the protocol less brittle but still avoids spam) - - allowedUpdateBytes = 100000 // initial/maximum allowed update size - allowedUpdateRate = time.Millisecond * 10 // time constant for recharging one byte of allowance - - freezeTimeBase = time.Millisecond * 700 // fixed component of client freeze time - freezeTimeRandom = time.Millisecond * 600 // random component of client freeze time - freezeCheckPeriod = time.Millisecond * 100 // buffer value recheck period after initial freeze time has elapsed - - // If the total encoded size of a sent transaction batch is over txSizeCostLimit - // per transaction then the request cost is calculated as proportional to the - // encoded size instead of the transaction count - txSizeCostLimit = 0x4000 - - // handshakeTimeout is the timeout LES handshake will be treated as failed. - handshakeTimeout = 5 * time.Second -) - -const ( - announceTypeNone = iota - announceTypeSimple - announceTypeSigned -) - -type keyValueEntry struct { - Key string - Value rlp.RawValue -} - -type keyValueList []keyValueEntry -type keyValueMap map[string]rlp.RawValue - -func (l keyValueList) add(key string, val interface{}) keyValueList { - var entry keyValueEntry - entry.Key = key - if val == nil { - val = uint64(0) - } - enc, err := rlp.EncodeToBytes(val) - if err == nil { - entry.Value = enc - } - return append(l, entry) -} - -func (l keyValueList) decode() (keyValueMap, uint64) { - m := make(keyValueMap) - var size uint64 - for _, entry := range l { - m[entry.Key] = entry.Value - size += uint64(len(entry.Key)) + uint64(len(entry.Value)) + 8 - } - return m, size -} - -func (m keyValueMap) get(key string, val interface{}) error { - enc, ok := m[key] - if !ok { - return errResp(ErrMissingKey, "%s", key) - } - if val == nil { - return nil - } - return rlp.DecodeBytes(enc, val) -} - -// peerCommons contains fields needed by both server peer and client peer. -type peerCommons struct { - *p2p.Peer - rw p2p.MsgReadWriter - - id string // Peer identity. - version int // Protocol version negotiated. - network uint64 // Network ID being on. - frozen atomic.Bool // Flag whether the peer is frozen. - announceType uint64 // New block announcement type. - serving atomic.Bool // The status indicates the peer is served. - headInfo blockInfo // Last announced block information. - - // Background task queue for caching peer tasks and executing in order. - sendQueue *utils.ExecQueue - - // Flow control agreement. - fcParams flowcontrol.ServerParams // The config for token bucket. - fcCosts requestCostTable // The Maximum request cost table. - - closeCh chan struct{} - lock sync.RWMutex // Lock used to protect all thread-sensitive fields. -} - -// isFrozen returns true if the client is frozen or the server has put our -// client in frozen state -func (p *peerCommons) isFrozen() bool { - return p.frozen.Load() -} - -// canQueue returns an indicator whether the peer can queue an operation. -func (p *peerCommons) canQueue() bool { - return p.sendQueue.CanQueue() && !p.isFrozen() -} - -// queueSend caches a peer operation in the background task queue. -// Please ensure to check `canQueue` before call this function -func (p *peerCommons) queueSend(f func()) bool { - return p.sendQueue.Queue(f) -} - -// String implements fmt.Stringer. -func (p *peerCommons) String() string { - return fmt.Sprintf("Peer %s [%s]", p.id, fmt.Sprintf("les/%d", p.version)) -} - -// PeerInfo represents a short summary of the `eth` sub-protocol metadata known -// about a connected peer. -type PeerInfo struct { - Version int `json:"version"` // Ethereum protocol version negotiated - Difficulty *big.Int `json:"difficulty"` // Total difficulty of the peer's blockchain - Head string `json:"head"` // SHA3 hash of the peer's best owned block -} - -// Info gathers and returns a collection of metadata known about a peer. -func (p *peerCommons) Info() *PeerInfo { - return &PeerInfo{ - Version: p.version, - Difficulty: p.Td(), - Head: fmt.Sprintf("%x", p.Head()), - } -} - -// Head retrieves a copy of the current head (most recent) hash of the peer. -func (p *peerCommons) Head() (hash common.Hash) { - p.lock.RLock() - defer p.lock.RUnlock() - - return p.headInfo.Hash -} - -// Td retrieves the current total difficulty of a peer. -func (p *peerCommons) Td() *big.Int { - p.lock.RLock() - defer p.lock.RUnlock() - - return new(big.Int).Set(p.headInfo.Td) -} - -// HeadAndTd retrieves the current head hash and total difficulty of a peer. -func (p *peerCommons) HeadAndTd() (hash common.Hash, td *big.Int) { - p.lock.RLock() - defer p.lock.RUnlock() - - return p.headInfo.Hash, new(big.Int).Set(p.headInfo.Td) -} - -// sendReceiveHandshake exchanges handshake packet with remote peer and returns any error -// if failed to send or receive packet. -func (p *peerCommons) sendReceiveHandshake(sendList keyValueList) (keyValueList, error) { - var ( - errc = make(chan error, 2) - recvList keyValueList - ) - // Send out own handshake in a new thread - go func() { - errc <- p2p.Send(p.rw, StatusMsg, &sendList) - }() - go func() { - // In the mean time retrieve the remote status message - msg, err := p.rw.ReadMsg() - if err != nil { - errc <- err - return - } - if msg.Code != StatusMsg { - errc <- errResp(ErrNoStatusMsg, "first msg has code %x (!= %x)", msg.Code, StatusMsg) - return - } - if msg.Size > ProtocolMaxMsgSize { - errc <- errResp(ErrMsgTooLarge, "%v > %v", msg.Size, ProtocolMaxMsgSize) - return - } - // Decode the handshake - if err := msg.Decode(&recvList); err != nil { - errc <- errResp(ErrDecode, "msg %v: %v", msg, err) - return - } - errc <- nil - }() - timeout := time.NewTimer(handshakeTimeout) - defer timeout.Stop() - for i := 0; i < 2; i++ { - select { - case err := <-errc: - if err != nil { - return nil, err - } - case <-timeout.C: - return nil, p2p.DiscReadTimeout - } - } - return recvList, nil -} - -// handshake executes the les protocol handshake, negotiating version number, -// network IDs, difficulties, head and genesis blocks. Besides the basic handshake -// fields, server and client can exchange and resolve some specified fields through -// two callback functions. -func (p *peerCommons) handshake(td *big.Int, head common.Hash, headNum uint64, genesis common.Hash, forkID forkid.ID, forkFilter forkid.Filter, sendCallback func(*keyValueList), recvCallback func(keyValueMap) error) error { - p.lock.Lock() - defer p.lock.Unlock() - - var send keyValueList - - // Add some basic handshake fields - send = send.add("protocolVersion", uint64(p.version)) - send = send.add("networkId", p.network) - // Note: the head info announced at handshake is only used in case of server peers - // but dummy values are still announced by clients for compatibility with older servers - send = send.add("headTd", td) - send = send.add("headHash", head) - send = send.add("headNum", headNum) - send = send.add("genesisHash", genesis) - - // If the protocol version is beyond les4, then pass the forkID - // as well. Check http://eips.ethereum.org/EIPS/eip-2124 for more - // spec detail. - if p.version >= lpv4 { - send = send.add("forkID", forkID) - } - // Add client-specified or server-specified fields - if sendCallback != nil { - sendCallback(&send) - } - // Exchange the handshake packet and resolve the received one. - recvList, err := p.sendReceiveHandshake(send) - if err != nil { - return err - } - recv, size := recvList.decode() - if size > allowedUpdateBytes { - return errResp(ErrRequestRejected, "") - } - var rGenesis common.Hash - var rVersion, rNetwork uint64 - if err := recv.get("protocolVersion", &rVersion); err != nil { - return err - } - if err := recv.get("networkId", &rNetwork); err != nil { - return err - } - if err := recv.get("genesisHash", &rGenesis); err != nil { - return err - } - if rGenesis != genesis { - return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", rGenesis[:8], genesis[:8]) - } - if rNetwork != p.network { - return errResp(ErrNetworkIdMismatch, "%d (!= %d)", rNetwork, p.network) - } - if int(rVersion) != p.version { - return errResp(ErrProtocolVersionMismatch, "%d (!= %d)", rVersion, p.version) - } - // Check forkID if the protocol version is beyond the les4 - if p.version >= lpv4 { - var forkID forkid.ID - if err := recv.get("forkID", &forkID); err != nil { - return err - } - if err := forkFilter(forkID); err != nil { - return errResp(ErrForkIDRejected, "%v", err) - } - } - if recvCallback != nil { - return recvCallback(recv) - } - return nil -} - -// close closes the channel and notifies all background routines to exit. -func (p *peerCommons) close() { - close(p.closeCh) - p.sendQueue.Quit() -} - -// serverPeer represents each node to which the client is connected. -// The node here refers to the les server. -type serverPeer struct { - peerCommons - - // Status fields - trusted bool // The flag whether the server is selected as trusted server. - onlyAnnounce bool // The flag whether the server sends announcement only. - chainSince, chainRecent uint64 // The range of chain server peer can serve. - stateSince, stateRecent uint64 // The range of state server peer can serve. - txHistory uint64 // The length of available tx history, 0 means all, 1 means disabled - - fcServer *flowcontrol.ServerNode // Client side mirror token bucket. - vtLock sync.Mutex - nodeValueTracker *vfc.NodeValueTracker - sentReqs map[uint64]sentReqEntry - - // Statistics - errCount utils.LinearExpiredValue // Counter the invalid responses server has replied - updateCount uint64 - updateTime mclock.AbsTime - - // Test callback hooks - hasBlockHook func(common.Hash, uint64, bool) bool // Used to determine whether the server has the specified block. -} - -func newServerPeer(version int, network uint64, trusted bool, p *p2p.Peer, rw p2p.MsgReadWriter) *serverPeer { - return &serverPeer{ - peerCommons: peerCommons{ - Peer: p, - rw: rw, - id: p.ID().String(), - version: version, - network: network, - sendQueue: utils.NewExecQueue(100), - closeCh: make(chan struct{}), - }, - trusted: trusted, - errCount: utils.LinearExpiredValue{Rate: mclock.AbsTime(time.Hour)}, - } -} - -// rejectUpdate returns true if a parameter update has to be rejected because -// the size and/or rate of updates exceed the capacity limitation -func (p *serverPeer) rejectUpdate(size uint64) bool { - now := mclock.Now() - if p.updateCount == 0 { - p.updateTime = now - } else { - dt := now - p.updateTime - p.updateTime = now - - r := uint64(dt / mclock.AbsTime(allowedUpdateRate)) - if p.updateCount > r { - p.updateCount -= r - } else { - p.updateCount = 0 - } - } - p.updateCount += size - return p.updateCount > allowedUpdateBytes -} - -// freeze processes Stop messages from the given server and set the status as -// frozen. -func (p *serverPeer) freeze() { - if p.frozen.CompareAndSwap(false, true) { - p.sendQueue.Clear() - } -} - -// unfreeze processes Resume messages from the given server and set the status -// as unfrozen. -func (p *serverPeer) unfreeze() { - p.frozen.Store(false) -} - -// sendRequest send a request to the server based on the given message type -// and content. -func sendRequest(w p2p.MsgWriter, msgcode, reqID uint64, data interface{}) error { - type req struct { - ReqID uint64 - Data interface{} - } - return p2p.Send(w, msgcode, &req{reqID, data}) -} - -func (p *serverPeer) sendRequest(msgcode, reqID uint64, data interface{}, amount int) error { - p.sentRequest(reqID, uint32(msgcode), uint32(amount)) - return sendRequest(p.rw, msgcode, reqID, data) -} - -// requestHeadersByHash fetches a batch of blocks' headers corresponding to the -// specified header query, based on the hash of an origin block. -func (p *serverPeer) requestHeadersByHash(reqID uint64, origin common.Hash, amount int, skip int, reverse bool) error { - p.Log().Debug("Fetching batch of headers", "count", amount, "fromhash", origin, "skip", skip, "reverse", reverse) - return p.sendRequest(GetBlockHeadersMsg, reqID, &GetBlockHeadersData{Origin: hashOrNumber{Hash: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}, amount) -} - -// requestHeadersByNumber fetches a batch of blocks' headers corresponding to the -// specified header query, based on the number of an origin block. -func (p *serverPeer) requestHeadersByNumber(reqID, origin uint64, amount int, skip int, reverse bool) error { - p.Log().Debug("Fetching batch of headers", "count", amount, "fromnum", origin, "skip", skip, "reverse", reverse) - return p.sendRequest(GetBlockHeadersMsg, reqID, &GetBlockHeadersData{Origin: hashOrNumber{Number: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}, amount) -} - -// requestBodies fetches a batch of blocks' bodies corresponding to the hashes -// specified. -func (p *serverPeer) requestBodies(reqID uint64, hashes []common.Hash) error { - p.Log().Debug("Fetching batch of block bodies", "count", len(hashes)) - return p.sendRequest(GetBlockBodiesMsg, reqID, hashes, len(hashes)) -} - -// requestCode fetches a batch of arbitrary data from a node's known state -// data, corresponding to the specified hashes. -func (p *serverPeer) requestCode(reqID uint64, reqs []CodeReq) error { - p.Log().Debug("Fetching batch of codes", "count", len(reqs)) - return p.sendRequest(GetCodeMsg, reqID, reqs, len(reqs)) -} - -// requestReceipts fetches a batch of transaction receipts from a remote node. -func (p *serverPeer) requestReceipts(reqID uint64, hashes []common.Hash) error { - p.Log().Debug("Fetching batch of receipts", "count", len(hashes)) - return p.sendRequest(GetReceiptsMsg, reqID, hashes, len(hashes)) -} - -// requestProofs fetches a batch of merkle proofs from a remote node. -func (p *serverPeer) requestProofs(reqID uint64, reqs []ProofReq) error { - p.Log().Debug("Fetching batch of proofs", "count", len(reqs)) - return p.sendRequest(GetProofsV2Msg, reqID, reqs, len(reqs)) -} - -// requestHelperTrieProofs fetches a batch of HelperTrie merkle proofs from a remote node. -func (p *serverPeer) requestHelperTrieProofs(reqID uint64, reqs []HelperTrieReq) error { - p.Log().Debug("Fetching batch of HelperTrie proofs", "count", len(reqs)) - return p.sendRequest(GetHelperTrieProofsMsg, reqID, reqs, len(reqs)) -} - -// requestTxStatus fetches a batch of transaction status records from a remote node. -func (p *serverPeer) requestTxStatus(reqID uint64, txHashes []common.Hash) error { - p.Log().Debug("Requesting transaction status", "count", len(txHashes)) - return p.sendRequest(GetTxStatusMsg, reqID, txHashes, len(txHashes)) -} - -// sendTxs creates a reply with a batch of transactions to be added to the remote transaction pool. -func (p *serverPeer) sendTxs(reqID uint64, amount int, txs rlp.RawValue) error { - p.Log().Debug("Sending batch of transactions", "amount", amount, "size", len(txs)) - sizeFactor := (len(txs) + txSizeCostLimit/2) / txSizeCostLimit - if sizeFactor > amount { - amount = sizeFactor - } - return p.sendRequest(SendTxV2Msg, reqID, txs, amount) -} - -// waitBefore implements distPeer interface -func (p *serverPeer) waitBefore(maxCost uint64) (time.Duration, float64) { - return p.fcServer.CanSend(maxCost) -} - -// getRequestCost returns an estimated request cost according to the flow control -// rules negotiated between the server and the client. -func (p *serverPeer) getRequestCost(msgcode uint64, amount int) uint64 { - p.lock.RLock() - defer p.lock.RUnlock() - - costs := p.fcCosts[msgcode] - if costs == nil { - return 0 - } - cost := costs.baseCost + costs.reqCost*uint64(amount) - if cost > p.fcParams.BufLimit { - cost = p.fcParams.BufLimit - } - return cost -} - -// getTxRelayCost returns an estimated relay cost according to the flow control -// rules negotiated between the server and the client. -func (p *serverPeer) getTxRelayCost(amount, size int) uint64 { - p.lock.RLock() - defer p.lock.RUnlock() - - costs := p.fcCosts[SendTxV2Msg] - if costs == nil { - return 0 - } - cost := costs.baseCost + costs.reqCost*uint64(amount) - sizeCost := costs.baseCost + costs.reqCost*uint64(size)/txSizeCostLimit - if sizeCost > cost { - cost = sizeCost - } - if cost > p.fcParams.BufLimit { - cost = p.fcParams.BufLimit - } - return cost -} - -// HasBlock checks if the peer has a given block -func (p *serverPeer) HasBlock(hash common.Hash, number uint64, hasState bool) bool { - p.lock.RLock() - defer p.lock.RUnlock() - - if p.hasBlockHook != nil { - return p.hasBlockHook(hash, number, hasState) - } - head := p.headInfo.Number - var since, recent uint64 - if hasState { - since = p.stateSince - recent = p.stateRecent - } else { - since = p.chainSince - recent = p.chainRecent - } - return head >= number && number >= since && (recent == 0 || number+recent+4 > head) -} - -// updateFlowControl updates the flow control parameters belonging to the server -// node if the announced key/value set contains relevant fields -func (p *serverPeer) updateFlowControl(update keyValueMap) { - p.lock.Lock() - defer p.lock.Unlock() - - // If any of the flow control params is nil, refuse to update. - var params flowcontrol.ServerParams - if update.get("flowControl/BL", ¶ms.BufLimit) == nil && update.get("flowControl/MRR", ¶ms.MinRecharge) == nil { - // todo can light client set a minimal acceptable flow control params? - p.fcParams = params - p.fcServer.UpdateParams(params) - } - var MRC RequestCostList - if update.get("flowControl/MRC", &MRC) == nil { - costUpdate := MRC.decode(ProtocolLengths[uint(p.version)]) - for code, cost := range costUpdate { - p.fcCosts[code] = cost - } - } -} - -// updateHead updates the head information based on the announcement from -// the peer. -func (p *serverPeer) updateHead(hash common.Hash, number uint64, td *big.Int) { - p.lock.Lock() - defer p.lock.Unlock() - - p.headInfo = blockInfo{Hash: hash, Number: number, Td: td} -} - -// Handshake executes the les protocol handshake, negotiating version number, -// network IDs and genesis blocks. -func (p *serverPeer) Handshake(genesis common.Hash, forkid forkid.ID, forkFilter forkid.Filter) error { - // Note: there is no need to share local head with a server but older servers still - // require these fields so we announce zero values. - return p.handshake(common.Big0, common.Hash{}, 0, genesis, forkid, forkFilter, func(lists *keyValueList) { - // Add some client-specific handshake fields - // - // Enable signed announcement randomly even the server is not trusted. - p.announceType = announceTypeSimple - if p.trusted { - p.announceType = announceTypeSigned - } - *lists = (*lists).add("announceType", p.announceType) - }, func(recv keyValueMap) error { - var ( - rHash common.Hash - rNum uint64 - rTd *big.Int - ) - if err := recv.get("headTd", &rTd); err != nil { - return err - } - if err := recv.get("headHash", &rHash); err != nil { - return err - } - if err := recv.get("headNum", &rNum); err != nil { - return err - } - p.headInfo = blockInfo{Hash: rHash, Number: rNum, Td: rTd} - if recv.get("serveChainSince", &p.chainSince) != nil { - p.onlyAnnounce = true - } - if recv.get("serveRecentChain", &p.chainRecent) != nil { - p.chainRecent = 0 - } - if recv.get("serveStateSince", &p.stateSince) != nil { - p.onlyAnnounce = true - } - if recv.get("serveRecentState", &p.stateRecent) != nil { - p.stateRecent = 0 - } - if recv.get("txRelay", nil) != nil { - p.onlyAnnounce = true - } - if p.version >= lpv4 { - var recentTx uint - if err := recv.get("recentTxLookup", &recentTx); err != nil { - return err - } - p.txHistory = uint64(recentTx) - } else { - // The weak assumption is held here that legacy les server(les2,3) - // has unlimited transaction history. The les serving in these legacy - // versions is disabled if the transaction is unindexed. - p.txHistory = txIndexUnlimited - } - if p.onlyAnnounce && !p.trusted { - return errResp(ErrUselessPeer, "peer cannot serve requests") - } - // Parse flow control handshake packet. - var sParams flowcontrol.ServerParams - if err := recv.get("flowControl/BL", &sParams.BufLimit); err != nil { - return err - } - if err := recv.get("flowControl/MRR", &sParams.MinRecharge); err != nil { - return err - } - var MRC RequestCostList - if err := recv.get("flowControl/MRC", &MRC); err != nil { - return err - } - p.fcParams = sParams - p.fcServer = flowcontrol.NewServerNode(sParams, &mclock.System{}) - p.fcCosts = MRC.decode(ProtocolLengths[uint(p.version)]) - - if !p.onlyAnnounce { - for msgCode := range reqAvgTimeCost { - if p.fcCosts[msgCode] == nil { - return errResp(ErrUselessPeer, "peer does not support message %d", msgCode) - } - } - } - return nil - }) -} - -// setValueTracker sets the value tracker references for connected servers. Note that the -// references should be removed upon disconnection by setValueTracker(nil, nil). -func (p *serverPeer) setValueTracker(nvt *vfc.NodeValueTracker) { - p.vtLock.Lock() - p.nodeValueTracker = nvt - if nvt != nil { - p.sentReqs = make(map[uint64]sentReqEntry) - } else { - p.sentReqs = nil - } - p.vtLock.Unlock() -} - -// updateVtParams updates the server's price table in the value tracker. -func (p *serverPeer) updateVtParams() { - p.vtLock.Lock() - defer p.vtLock.Unlock() - - if p.nodeValueTracker == nil { - return - } - reqCosts := make([]uint64, len(requestList)) - for code, costs := range p.fcCosts { - if m, ok := requestMapping[uint32(code)]; ok { - reqCosts[m.first] = costs.baseCost + costs.reqCost - if m.rest != -1 { - reqCosts[m.rest] = costs.reqCost - } - } - } - p.nodeValueTracker.UpdateCosts(reqCosts) -} - -// sentReqEntry remembers sent requests and their sending times -type sentReqEntry struct { - reqType, amount uint32 - at mclock.AbsTime -} - -// sentRequest marks a request sent at the current moment to this server. -func (p *serverPeer) sentRequest(id uint64, reqType, amount uint32) { - p.vtLock.Lock() - if p.sentReqs != nil { - p.sentReqs[id] = sentReqEntry{reqType, amount, mclock.Now()} - } - p.vtLock.Unlock() -} - -// answeredRequest marks a request answered at the current moment by this server. -func (p *serverPeer) answeredRequest(id uint64) { - p.vtLock.Lock() - if p.sentReqs == nil { - p.vtLock.Unlock() - return - } - e, ok := p.sentReqs[id] - delete(p.sentReqs, id) - nvt := p.nodeValueTracker - p.vtLock.Unlock() - if !ok { - return - } - var ( - vtReqs [2]vfc.ServedRequest - reqCount int - ) - m := requestMapping[e.reqType] - if m.rest == -1 || e.amount <= 1 { - reqCount = 1 - vtReqs[0] = vfc.ServedRequest{ReqType: uint32(m.first), Amount: e.amount} - } else { - reqCount = 2 - vtReqs[0] = vfc.ServedRequest{ReqType: uint32(m.first), Amount: 1} - vtReqs[1] = vfc.ServedRequest{ReqType: uint32(m.rest), Amount: e.amount - 1} - } - dt := time.Duration(mclock.Now() - e.at) - nvt.Served(vtReqs[:reqCount], dt) -} - -// clientPeer represents each node to which the les server is connected. -// The node here refers to the light client. -type clientPeer struct { - peerCommons - - // responseLock ensures that responses are queued in the same order as - // RequestProcessed is called - responseLock sync.Mutex - responseCount uint64 // Counter to generate an unique id for request processing. - - balance vfs.ConnectedBalance - - // invalidLock is used for protecting invalidCount. - invalidLock sync.RWMutex - invalidCount utils.LinearExpiredValue // Counter the invalid request the client peer has made. - - capacity uint64 - // lastAnnounce is the last broadcast created by the server; may be newer than the last head - // sent to the specific client (stored in headInfo) if capacity is zero. In this case the - // latest head is sent when the client gains non-zero capacity. - lastAnnounce announceData - - connectedAt mclock.AbsTime - server bool - errCh chan error - fcClient *flowcontrol.ClientNode // Server side mirror token bucket. -} - -func newClientPeer(version int, network uint64, p *p2p.Peer, rw p2p.MsgReadWriter) *clientPeer { - return &clientPeer{ - peerCommons: peerCommons{ - Peer: p, - rw: rw, - id: p.ID().String(), - version: version, - network: network, - sendQueue: utils.NewExecQueue(100), - closeCh: make(chan struct{}), - }, - invalidCount: utils.LinearExpiredValue{Rate: mclock.AbsTime(time.Hour)}, - errCh: make(chan error, 1), - } -} - -// FreeClientId returns a string identifier for the peer. Multiple peers with -// the same identifier can not be connected in free mode simultaneously. -func (p *clientPeer) FreeClientId() string { - if addr, ok := p.RemoteAddr().(*net.TCPAddr); ok { - if addr.IP.IsLoopback() { - // using peer id instead of loopback ip address allows multiple free - // connections from local machine to own server - return p.id - } else { - return addr.IP.String() - } - } - return p.id -} - -// sendStop notifies the client about being in frozen state -func (p *clientPeer) sendStop() error { - return p2p.Send(p.rw, StopMsg, struct{}{}) -} - -// sendResume notifies the client about getting out of frozen state -func (p *clientPeer) sendResume(bv uint64) error { - return p2p.Send(p.rw, ResumeMsg, bv) -} - -// freeze temporarily puts the client in a frozen state which means all unprocessed -// and subsequent requests are dropped. Unfreezing happens automatically after a short -// time if the client's buffer value is at least in the slightly positive region. -// The client is also notified about being frozen/unfrozen with a Stop/Resume message. -func (p *clientPeer) freeze() { - if p.version < lpv3 { - // if Stop/Resume is not supported then just drop the peer after setting - // its frozen status permanently - p.frozen.Store(true) - p.Peer.Disconnect(p2p.DiscUselessPeer) - return - } - if !p.frozen.Swap(true) { - go func() { - p.sendStop() - time.Sleep(freezeTimeBase + time.Duration(rand.Int63n(int64(freezeTimeRandom)))) - for { - bufValue, bufLimit := p.fcClient.BufferStatus() - if bufLimit == 0 { - return - } - if bufValue <= bufLimit/8 { - time.Sleep(freezeCheckPeriod) - continue - } - p.frozen.Store(false) - p.sendResume(bufValue) - return - } - }() - } -} - -// reply struct represents a reply with the actual data already RLP encoded and -// only the bv (buffer value) missing. This allows the serving mechanism to -// calculate the bv value which depends on the data size before sending the reply. -type reply struct { - w p2p.MsgWriter - msgcode, reqID uint64 - data rlp.RawValue -} - -// send sends the reply with the calculated buffer value -func (r *reply) send(bv uint64) error { - type resp struct { - ReqID, BV uint64 - Data rlp.RawValue - } - return p2p.Send(r.w, r.msgcode, &resp{r.reqID, bv, r.data}) -} - -// size returns the RLP encoded size of the message data -func (r *reply) size() uint32 { - return uint32(len(r.data)) -} - -// replyBlockHeaders creates a reply with a batch of block headers -func (p *clientPeer) replyBlockHeaders(reqID uint64, headers []*types.Header) *reply { - data, _ := rlp.EncodeToBytes(headers) - return &reply{p.rw, BlockHeadersMsg, reqID, data} -} - -// replyBlockBodiesRLP creates a reply with a batch of block contents from -// an already RLP encoded format. -func (p *clientPeer) replyBlockBodiesRLP(reqID uint64, bodies []rlp.RawValue) *reply { - data, _ := rlp.EncodeToBytes(bodies) - return &reply{p.rw, BlockBodiesMsg, reqID, data} -} - -// replyCode creates a reply with a batch of arbitrary internal data, corresponding to the -// hashes requested. -func (p *clientPeer) replyCode(reqID uint64, codes [][]byte) *reply { - data, _ := rlp.EncodeToBytes(codes) - return &reply{p.rw, CodeMsg, reqID, data} -} - -// replyReceiptsRLP creates a reply with a batch of transaction receipts, corresponding to the -// ones requested from an already RLP encoded format. -func (p *clientPeer) replyReceiptsRLP(reqID uint64, receipts []rlp.RawValue) *reply { - data, _ := rlp.EncodeToBytes(receipts) - return &reply{p.rw, ReceiptsMsg, reqID, data} -} - -// replyProofsV2 creates a reply with a batch of merkle proofs, corresponding to the ones requested. -func (p *clientPeer) replyProofsV2(reqID uint64, proofs trienode.ProofList) *reply { - data, _ := rlp.EncodeToBytes(proofs) - return &reply{p.rw, ProofsV2Msg, reqID, data} -} - -// replyHelperTrieProofs creates a reply with a batch of HelperTrie proofs, corresponding to the ones requested. -func (p *clientPeer) replyHelperTrieProofs(reqID uint64, resp HelperTrieResps) *reply { - data, _ := rlp.EncodeToBytes(resp) - return &reply{p.rw, HelperTrieProofsMsg, reqID, data} -} - -// replyTxStatus creates a reply with a batch of transaction status records, corresponding to the ones requested. -func (p *clientPeer) replyTxStatus(reqID uint64, stats []light.TxStatus) *reply { - data, _ := rlp.EncodeToBytes(stats) - return &reply{p.rw, TxStatusMsg, reqID, data} -} - -// sendAnnounce announces the availability of a number of blocks through -// a hash notification. -func (p *clientPeer) sendAnnounce(request announceData) error { - return p2p.Send(p.rw, AnnounceMsg, request) -} - -// InactiveAllowance implements vfs.clientPeer -func (p *clientPeer) InactiveAllowance() time.Duration { - return 0 // will return more than zero for les/5 clients -} - -// getCapacity returns the current capacity of the peer -func (p *clientPeer) getCapacity() uint64 { - p.lock.RLock() - defer p.lock.RUnlock() - - return p.capacity -} - -// UpdateCapacity updates the request serving capacity assigned to a given client -// and also sends an announcement about the updated flow control parameters. -// Note: UpdateCapacity implements vfs.clientPeer and should not block. The requested -// parameter is true if the callback was initiated by ClientPool.SetCapacity on the given peer. -func (p *clientPeer) UpdateCapacity(newCap uint64, requested bool) { - p.lock.Lock() - defer p.lock.Unlock() - - if newCap != p.fcParams.MinRecharge { - p.fcParams = flowcontrol.ServerParams{MinRecharge: newCap, BufLimit: newCap * bufLimitRatio} - p.fcClient.UpdateParams(p.fcParams) - var kvList keyValueList - kvList = kvList.add("flowControl/MRR", newCap) - kvList = kvList.add("flowControl/BL", newCap*bufLimitRatio) - p.queueSend(func() { p.sendAnnounce(announceData{Update: kvList}) }) - } - - if p.capacity == 0 && newCap != 0 { - p.sendLastAnnounce() - } - p.capacity = newCap -} - -// announceOrStore sends the given head announcement to the client if the client is -// active (capacity != 0) and the same announcement hasn't been sent before. If the -// client is inactive the announcement is stored and sent later if the client is -// activated again. -func (p *clientPeer) announceOrStore(announce announceData) { - p.lock.Lock() - defer p.lock.Unlock() - - p.lastAnnounce = announce - if p.capacity != 0 { - p.sendLastAnnounce() - } -} - -// announce sends the given head announcement to the client if it hasn't been sent before -func (p *clientPeer) sendLastAnnounce() { - if p.lastAnnounce.Td == nil { - return - } - if p.headInfo.Td == nil || p.lastAnnounce.Td.Cmp(p.headInfo.Td) > 0 { - if !p.queueSend(func() { p.sendAnnounce(p.lastAnnounce) }) { - p.Log().Debug("Dropped announcement because queue is full", "number", p.lastAnnounce.Number, "hash", p.lastAnnounce.Hash) - } else { - p.Log().Debug("Sent announcement", "number", p.lastAnnounce.Number, "hash", p.lastAnnounce.Hash) - } - p.headInfo = blockInfo{Hash: p.lastAnnounce.Hash, Number: p.lastAnnounce.Number, Td: p.lastAnnounce.Td} - } -} - -// Handshake executes the les protocol handshake, negotiating version number, -// network IDs, difficulties, head and genesis blocks. -func (p *clientPeer) Handshake(td *big.Int, head common.Hash, headNum uint64, genesis common.Hash, forkID forkid.ID, forkFilter forkid.Filter, server *LesServer) error { - recentTx := server.handler.blockchain.TxLookupLimit() - if recentTx != txIndexUnlimited { - if recentTx < blockSafetyMargin { - recentTx = txIndexDisabled - } else { - recentTx -= blockSafetyMargin - txIndexRecentOffset - } - } - if recentTx != txIndexUnlimited && p.version < lpv4 { - return errors.New("cannot serve old clients without a complete tx index") - } - // Note: clientPeer.headInfo should contain the last head announced to the client by us. - // The values announced in the handshake are dummy values for compatibility reasons and should be ignored. - p.headInfo = blockInfo{Hash: head, Number: headNum, Td: td} - return p.handshake(td, head, headNum, genesis, forkID, forkFilter, func(lists *keyValueList) { - // Add some information which services server can offer. - *lists = (*lists).add("serveHeaders", nil) - *lists = (*lists).add("serveChainSince", uint64(0)) - *lists = (*lists).add("serveStateSince", uint64(0)) - - // If local ethereum node is running in archive mode, advertise ourselves we have - // all version state data. Otherwise only recent state is available. - stateRecent := uint64(core.TriesInMemory - blockSafetyMargin) - if server.archiveMode { - stateRecent = 0 - } - *lists = (*lists).add("serveRecentState", stateRecent) - *lists = (*lists).add("txRelay", nil) - if p.version >= lpv4 { - *lists = (*lists).add("recentTxLookup", recentTx) - } - *lists = (*lists).add("flowControl/BL", server.defParams.BufLimit) - *lists = (*lists).add("flowControl/MRR", server.defParams.MinRecharge) - - var costList RequestCostList - if server.costTracker.testCostList != nil { - costList = server.costTracker.testCostList - } else { - costList = server.costTracker.makeCostList(server.costTracker.globalFactor()) - } - *lists = (*lists).add("flowControl/MRC", costList) - p.fcCosts = costList.decode(ProtocolLengths[uint(p.version)]) - p.fcParams = server.defParams - }, func(recv keyValueMap) error { - p.server = recv.get("flowControl/MRR", nil) == nil - if p.server { - p.announceType = announceTypeNone // connected to another server, send no messages - } else { - if recv.get("announceType", &p.announceType) != nil { - // set default announceType on server side - p.announceType = announceTypeSimple - } - } - return nil - }) -} - -func (p *clientPeer) bumpInvalid() { - p.invalidLock.Lock() - p.invalidCount.Add(1, mclock.Now()) - p.invalidLock.Unlock() -} - -func (p *clientPeer) getInvalid() uint64 { - p.invalidLock.RLock() - defer p.invalidLock.RUnlock() - return p.invalidCount.Value(mclock.Now()) -} - -// Disconnect implements vfs.clientPeer -func (p *clientPeer) Disconnect() { - p.Peer.Disconnect(p2p.DiscRequested) -} - -// serverPeerSubscriber is an interface to notify services about added or -// removed server peers -type serverPeerSubscriber interface { - registerPeer(*serverPeer) - unregisterPeer(*serverPeer) -} - -// serverPeerSet represents the set of active server peers currently -// participating in the Light Ethereum sub-protocol. -type serverPeerSet struct { - peers map[string]*serverPeer - // subscribers is a batch of subscribers and peerset will notify - // these subscribers when the peerset changes(new server peer is - // added or removed) - subscribers []serverPeerSubscriber - closed bool - lock sync.RWMutex -} - -// newServerPeerSet creates a new peer set to track the active server peers. -func newServerPeerSet() *serverPeerSet { - return &serverPeerSet{peers: make(map[string]*serverPeer)} -} - -// subscribe adds a service to be notified about added or removed -// peers and also register all active peers into the given service. -func (ps *serverPeerSet) subscribe(sub serverPeerSubscriber) { - ps.lock.Lock() - defer ps.lock.Unlock() - - ps.subscribers = append(ps.subscribers, sub) - for _, p := range ps.peers { - sub.registerPeer(p) - } -} - -// register adds a new server peer into the set, or returns an error if the -// peer is already known. -func (ps *serverPeerSet) register(peer *serverPeer) error { - ps.lock.Lock() - defer ps.lock.Unlock() - - if ps.closed { - return errClosed - } - if _, exist := ps.peers[peer.id]; exist { - return errAlreadyRegistered - } - ps.peers[peer.id] = peer - for _, sub := range ps.subscribers { - sub.registerPeer(peer) - } - return nil -} - -// unregister removes a remote peer from the active set, disabling any further -// actions to/from that particular entity. It also initiates disconnection at -// the networking layer. -func (ps *serverPeerSet) unregister(id string) error { - ps.lock.Lock() - defer ps.lock.Unlock() - - p, ok := ps.peers[id] - if !ok { - return errNotRegistered - } - delete(ps.peers, id) - for _, sub := range ps.subscribers { - sub.unregisterPeer(p) - } - p.Peer.Disconnect(p2p.DiscRequested) - return nil -} - -// ids returns a list of all registered peer IDs -func (ps *serverPeerSet) ids() []string { - ps.lock.RLock() - defer ps.lock.RUnlock() - - var ids []string - for id := range ps.peers { - ids = append(ids, id) - } - return ids -} - -// peer retrieves the registered peer with the given id. -func (ps *serverPeerSet) peer(id string) *serverPeer { - ps.lock.RLock() - defer ps.lock.RUnlock() - - return ps.peers[id] -} - -// len returns if the current number of peers in the set. -func (ps *serverPeerSet) len() int { - ps.lock.RLock() - defer ps.lock.RUnlock() - - return len(ps.peers) -} - -// allServerPeers returns all server peers in a list. -func (ps *serverPeerSet) allPeers() []*serverPeer { - ps.lock.RLock() - defer ps.lock.RUnlock() - - list := make([]*serverPeer, 0, len(ps.peers)) - for _, p := range ps.peers { - list = append(list, p) - } - return list -} - -// close disconnects all peers. No new peers can be registered -// after close has returned. -func (ps *serverPeerSet) close() { - ps.lock.Lock() - defer ps.lock.Unlock() - - for _, p := range ps.peers { - p.Disconnect(p2p.DiscQuitting) - } - ps.closed = true -} - -// clientPeerSet represents the set of active client peers currently -// participating in the Light Ethereum sub-protocol. -type clientPeerSet struct { - peers map[enode.ID]*clientPeer - lock sync.RWMutex - closed bool - - privateKey *ecdsa.PrivateKey - lastAnnounce, signedAnnounce announceData -} - -// newClientPeerSet creates a new peer set to track the client peers. -func newClientPeerSet() *clientPeerSet { - return &clientPeerSet{peers: make(map[enode.ID]*clientPeer)} -} - -// register adds a new peer into the peer set, or returns an error if the -// peer is already known. -func (ps *clientPeerSet) register(peer *clientPeer) error { - ps.lock.Lock() - defer ps.lock.Unlock() - - if ps.closed { - return errClosed - } - if _, exist := ps.peers[peer.ID()]; exist { - return errAlreadyRegistered - } - ps.peers[peer.ID()] = peer - ps.announceOrStore(peer) - return nil -} - -// unregister removes a remote peer from the peer set, disabling any further -// actions to/from that particular entity. It also initiates disconnection -// at the networking layer. -func (ps *clientPeerSet) unregister(id enode.ID) error { - ps.lock.Lock() - defer ps.lock.Unlock() - - p, ok := ps.peers[id] - if !ok { - return errNotRegistered - } - delete(ps.peers, id) - p.Peer.Disconnect(p2p.DiscRequested) - return nil -} - -// ids returns a list of all registered peer IDs -func (ps *clientPeerSet) ids() []enode.ID { - ps.lock.RLock() - defer ps.lock.RUnlock() - - var ids []enode.ID - for id := range ps.peers { - ids = append(ids, id) - } - return ids -} - -// peer retrieves the registered peer with the given id. -func (ps *clientPeerSet) peer(id enode.ID) *clientPeer { - ps.lock.RLock() - defer ps.lock.RUnlock() - - return ps.peers[id] -} - -// setSignerKey sets the signer key for signed announcements. Should be called before -// starting the protocol handler. -func (ps *clientPeerSet) setSignerKey(privateKey *ecdsa.PrivateKey) { - ps.privateKey = privateKey -} - -// broadcast sends the given announcements to all active peers -func (ps *clientPeerSet) broadcast(announce announceData) { - ps.lock.Lock() - defer ps.lock.Unlock() - - ps.lastAnnounce = announce - for _, peer := range ps.peers { - ps.announceOrStore(peer) - } -} - -// announceOrStore sends the requested type of announcement to the given peer or stores -// it for later if the peer is inactive (capacity == 0). -func (ps *clientPeerSet) announceOrStore(p *clientPeer) { - if ps.lastAnnounce.Td == nil { - return - } - switch p.announceType { - case announceTypeSimple: - p.announceOrStore(ps.lastAnnounce) - case announceTypeSigned: - if ps.signedAnnounce.Hash != ps.lastAnnounce.Hash { - ps.signedAnnounce = ps.lastAnnounce - ps.signedAnnounce.sign(ps.privateKey) - } - p.announceOrStore(ps.signedAnnounce) - } -} - -// close disconnects all peers. No new peers can be registered -// after close has returned. -func (ps *clientPeerSet) close() { - ps.lock.Lock() - defer ps.lock.Unlock() - - for _, p := range ps.peers { - p.Peer.Disconnect(p2p.DiscQuitting) - } - ps.closed = true -} - -// serverSet is a special set which contains all connected les servers. -// Les servers will also be discovered by discovery protocol because they -// also run the LES protocol. We can't drop them although they are useless -// for us(server) but for other protocols(e.g. ETH) upon the devp2p they -// may be useful. -type serverSet struct { - lock sync.Mutex - set map[string]*clientPeer - closed bool -} - -func newServerSet() *serverSet { - return &serverSet{set: make(map[string]*clientPeer)} -} - -func (s *serverSet) register(peer *clientPeer) error { - s.lock.Lock() - defer s.lock.Unlock() - - if s.closed { - return errClosed - } - if _, exist := s.set[peer.id]; exist { - return errAlreadyRegistered - } - s.set[peer.id] = peer - return nil -} - -func (s *serverSet) unregister(peer *clientPeer) error { - s.lock.Lock() - defer s.lock.Unlock() - - if s.closed { - return errClosed - } - if _, exist := s.set[peer.id]; !exist { - return errNotRegistered - } - delete(s.set, peer.id) - peer.Peer.Disconnect(p2p.DiscQuitting) - return nil -} - -func (s *serverSet) close() { - s.lock.Lock() - defer s.lock.Unlock() - - for _, p := range s.set { - p.Peer.Disconnect(p2p.DiscQuitting) - } - s.closed = true -} diff --git a/les/peer_test.go b/les/peer_test.go deleted file mode 100644 index d6ca0eac7c..0000000000 --- a/les/peer_test.go +++ /dev/null @@ -1,166 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "crypto/rand" - "errors" - "math/big" - "reflect" - "sort" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/forkid" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/params" -) - -type testServerPeerSub struct { - regCh chan *serverPeer - unregCh chan *serverPeer -} - -func newTestServerPeerSub() *testServerPeerSub { - return &testServerPeerSub{ - regCh: make(chan *serverPeer, 1), - unregCh: make(chan *serverPeer, 1), - } -} - -func (t *testServerPeerSub) registerPeer(p *serverPeer) { t.regCh <- p } -func (t *testServerPeerSub) unregisterPeer(p *serverPeer) { t.unregCh <- p } - -func TestPeerSubscription(t *testing.T) { - peers := newServerPeerSet() - defer peers.close() - - checkIds := func(expect []string) { - given := peers.ids() - if len(given) == 0 && len(expect) == 0 { - return - } - sort.Strings(given) - sort.Strings(expect) - if !reflect.DeepEqual(given, expect) { - t.Fatalf("all peer ids mismatch, want %v, given %v", expect, given) - } - } - checkPeers := func(peerCh chan *serverPeer) { - select { - case <-peerCh: - case <-time.NewTimer(100 * time.Millisecond).C: - t.Fatalf("timeout, no event received") - } - select { - case <-peerCh: - t.Fatalf("unexpected event received") - case <-time.NewTimer(10 * time.Millisecond).C: - } - } - checkIds([]string{}) - - sub := newTestServerPeerSub() - peers.subscribe(sub) - - // Generate a random id and create the peer - var id enode.ID - rand.Read(id[:]) - peer := newServerPeer(2, NetworkId, false, p2p.NewPeer(id, "name", nil), nil) - peers.register(peer) - - checkIds([]string{peer.id}) - checkPeers(sub.regCh) - - peers.unregister(peer.id) - checkIds([]string{}) - checkPeers(sub.unregCh) -} - -type fakeChain struct{} - -func (f *fakeChain) Config() *params.ChainConfig { return params.MainnetChainConfig } -func (f *fakeChain) Genesis() *types.Block { - return core.DefaultGenesisBlock().ToBlock() -} -func (f *fakeChain) CurrentHeader() *types.Header { return &types.Header{Number: big.NewInt(10000000)} } - -func TestHandshake(t *testing.T) { - // Create a message pipe to communicate through - app, net := p2p.MsgPipe() - - // Generate a random id and create the peer - var id enode.ID - rand.Read(id[:]) - - peer1 := newClientPeer(2, NetworkId, p2p.NewPeer(id, "name", nil), net) - peer2 := newServerPeer(2, NetworkId, true, p2p.NewPeer(id, "name", nil), app) - - var ( - errCh1 = make(chan error, 1) - errCh2 = make(chan error, 1) - - td = big.NewInt(100) - head = common.HexToHash("deadbeef") - headNum = uint64(10) - genesis = common.HexToHash("cafebabe") - - chain1, chain2 = &fakeChain{}, &fakeChain{} - forkID1 = forkid.NewID(chain1.Config(), chain1.Genesis(), chain1.CurrentHeader().Number.Uint64(), chain1.CurrentHeader().Time) - forkID2 = forkid.NewID(chain2.Config(), chain2.Genesis(), chain2.CurrentHeader().Number.Uint64(), chain2.CurrentHeader().Time) - filter1, filter2 = forkid.NewFilter(chain1), forkid.NewFilter(chain2) - ) - - go func() { - errCh1 <- peer1.handshake(td, head, headNum, genesis, forkID1, filter1, func(list *keyValueList) { - var announceType uint64 = announceTypeSigned - *list = (*list).add("announceType", announceType) - }, nil) - }() - go func() { - errCh2 <- peer2.handshake(td, head, headNum, genesis, forkID2, filter2, nil, func(recv keyValueMap) error { - var reqType uint64 - err := recv.get("announceType", &reqType) - if err != nil { - return err - } - if reqType != announceTypeSigned { - return errors.New("expected announceTypeSigned") - } - return nil - }) - }() - - for i := 0; i < 2; i++ { - select { - case err := <-errCh1: - if err != nil { - t.Fatalf("handshake failed, %v", err) - } - case err := <-errCh2: - if err != nil { - t.Fatalf("handshake failed, %v", err) - } - case <-time.After(time.Second): - t.Fatalf("timeout") - } - } -} diff --git a/les/protocol.go b/les/protocol.go deleted file mode 100644 index cfebdbfb9a..0000000000 --- a/les/protocol.go +++ /dev/null @@ -1,327 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "crypto/ecdsa" - "errors" - "fmt" - "io" - "math/big" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/crypto" - vfc "github.com/ethereum/go-ethereum/les/vflux/client" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/rlp" -) - -// Constants to match up protocol versions and messages -const ( - lpv2 = 2 - lpv3 = 3 - lpv4 = 4 -) - -// Supported versions of the les protocol (first is primary) -var ( - ClientProtocolVersions = []uint{lpv2, lpv3, lpv4} - ServerProtocolVersions = []uint{lpv2, lpv3, lpv4} -) - -// ProtocolLengths is the number of implemented message corresponding to different protocol versions. -var ProtocolLengths = map[uint]uint64{lpv2: 22, lpv3: 24, lpv4: 24} - -const ( - NetworkId = 1 - ProtocolMaxMsgSize = 10 * 1024 * 1024 // Maximum cap on the size of a protocol message - blockSafetyMargin = 4 // safety margin applied to block ranges specified relative to head block - - txIndexUnlimited = 0 // this value in the "recentTxLookup" handshake field means the entire tx index history is served - txIndexDisabled = 1 // this value means tx index is not served at all - txIndexRecentOffset = 1 // txIndexRecentOffset + N in the handshake field means then tx index of the last N blocks is supported -) - -// les protocol message codes -const ( - // Protocol messages inherited from LPV1 - StatusMsg = 0x00 - AnnounceMsg = 0x01 - GetBlockHeadersMsg = 0x02 - BlockHeadersMsg = 0x03 - GetBlockBodiesMsg = 0x04 - BlockBodiesMsg = 0x05 - GetReceiptsMsg = 0x06 - ReceiptsMsg = 0x07 - GetCodeMsg = 0x0a - CodeMsg = 0x0b - // Protocol messages introduced in LPV2 - GetProofsV2Msg = 0x0f - ProofsV2Msg = 0x10 - GetHelperTrieProofsMsg = 0x11 - HelperTrieProofsMsg = 0x12 - SendTxV2Msg = 0x13 - GetTxStatusMsg = 0x14 - TxStatusMsg = 0x15 - // Protocol messages introduced in LPV3 - StopMsg = 0x16 - ResumeMsg = 0x17 -) - -// GetBlockHeadersData represents a block header query (the request ID is not included) -type GetBlockHeadersData struct { - Origin hashOrNumber // Block from which to retrieve headers - Amount uint64 // Maximum number of headers to retrieve - Skip uint64 // Blocks to skip between consecutive headers - Reverse bool // Query direction (false = rising towards latest, true = falling towards genesis) -} - -// GetBlockHeadersPacket represents a block header request -type GetBlockHeadersPacket struct { - ReqID uint64 - Query GetBlockHeadersData -} - -// GetBlockBodiesPacket represents a block body request -type GetBlockBodiesPacket struct { - ReqID uint64 - Hashes []common.Hash -} - -// GetCodePacket represents a contract code request -type GetCodePacket struct { - ReqID uint64 - Reqs []CodeReq -} - -// GetReceiptsPacket represents a block receipts request -type GetReceiptsPacket struct { - ReqID uint64 - Hashes []common.Hash -} - -// GetProofsPacket represents a proof request -type GetProofsPacket struct { - ReqID uint64 - Reqs []ProofReq -} - -// GetHelperTrieProofsPacket represents a helper trie proof request -type GetHelperTrieProofsPacket struct { - ReqID uint64 - Reqs []HelperTrieReq -} - -// SendTxPacket represents a transaction propagation request -type SendTxPacket struct { - ReqID uint64 - Txs []*types.Transaction -} - -// GetTxStatusPacket represents a transaction status query -type GetTxStatusPacket struct { - ReqID uint64 - Hashes []common.Hash -} - -type requestInfo struct { - name string - maxCount uint64 - refBasketFirst, refBasketRest float64 -} - -// reqMapping maps an LES request to one or two vflux service vector entries. -// If rest != -1 and the request type is used with amounts larger than one then the -// first one of the multi-request is mapped to first while the rest is mapped to rest. -type reqMapping struct { - first, rest int -} - -var ( - // requests describes the available LES request types and their initializing amounts - // in the vfc.ValueTracker reference basket. Initial values are estimates - // based on the same values as the server's default cost estimates (reqAvgTimeCost). - requests = map[uint64]requestInfo{ - GetBlockHeadersMsg: {"GetBlockHeaders", MaxHeaderFetch, 10, 1000}, - GetBlockBodiesMsg: {"GetBlockBodies", MaxBodyFetch, 1, 0}, - GetReceiptsMsg: {"GetReceipts", MaxReceiptFetch, 1, 0}, - GetCodeMsg: {"GetCode", MaxCodeFetch, 1, 0}, - GetProofsV2Msg: {"GetProofsV2", MaxProofsFetch, 10, 0}, - GetHelperTrieProofsMsg: {"GetHelperTrieProofs", MaxHelperTrieProofsFetch, 10, 100}, - SendTxV2Msg: {"SendTxV2", MaxTxSend, 1, 0}, - GetTxStatusMsg: {"GetTxStatus", MaxTxStatus, 10, 0}, - } - requestList []vfc.RequestInfo - requestMapping map[uint32]reqMapping -) - -// init creates a request list and mapping between protocol message codes and vflux -// service vector indices. -func init() { - requestMapping = make(map[uint32]reqMapping) - for code, req := range requests { - cost := reqAvgTimeCost[code] - rm := reqMapping{len(requestList), -1} - requestList = append(requestList, vfc.RequestInfo{ - Name: req.name + ".first", - InitAmount: req.refBasketFirst, - InitValue: float64(cost.baseCost + cost.reqCost), - }) - if req.refBasketRest != 0 { - rm.rest = len(requestList) - requestList = append(requestList, vfc.RequestInfo{ - Name: req.name + ".rest", - InitAmount: req.refBasketRest, - InitValue: float64(cost.reqCost), - }) - } - requestMapping[uint32(code)] = rm - } -} - -type errCode int - -const ( - ErrMsgTooLarge = iota - ErrDecode - ErrInvalidMsgCode - ErrProtocolVersionMismatch - ErrNetworkIdMismatch - ErrGenesisBlockMismatch - ErrNoStatusMsg - ErrExtraStatusMsg - ErrSuspendedPeer - ErrUselessPeer - ErrRequestRejected - ErrUnexpectedResponse - ErrInvalidResponse - ErrTooManyTimeouts - ErrMissingKey - ErrForkIDRejected -) - -func (e errCode) String() string { - return errorToString[int(e)] -} - -// XXX change once legacy code is out -var errorToString = map[int]string{ - ErrMsgTooLarge: "Message too long", - ErrDecode: "Invalid message", - ErrInvalidMsgCode: "Invalid message code", - ErrProtocolVersionMismatch: "Protocol version mismatch", - ErrNetworkIdMismatch: "NetworkId mismatch", - ErrGenesisBlockMismatch: "Genesis block mismatch", - ErrNoStatusMsg: "No status message", - ErrExtraStatusMsg: "Extra status message", - ErrSuspendedPeer: "Suspended peer", - ErrRequestRejected: "Request rejected", - ErrUnexpectedResponse: "Unexpected response", - ErrInvalidResponse: "Invalid response", - ErrTooManyTimeouts: "Too many request timeouts", - ErrMissingKey: "Key missing from list", - ErrForkIDRejected: "ForkID rejected", -} - -// announceData is the network packet for the block announcements. -type announceData struct { - Hash common.Hash // Hash of one particular block being announced - Number uint64 // Number of one particular block being announced - Td *big.Int // Total difficulty of one particular block being announced - ReorgDepth uint64 - Update keyValueList -} - -// sanityCheck verifies that the values are reasonable, as a DoS protection -func (a *announceData) sanityCheck() error { - if tdlen := a.Td.BitLen(); tdlen > 100 { - return fmt.Errorf("too large block TD: bitlen %d", tdlen) - } - return nil -} - -// sign adds a signature to the block announcement by the given privKey -func (a *announceData) sign(privKey *ecdsa.PrivateKey) { - rlp, _ := rlp.EncodeToBytes(blockInfo{a.Hash, a.Number, a.Td}) - sig, _ := crypto.Sign(crypto.Keccak256(rlp), privKey) - a.Update = a.Update.add("sign", sig) -} - -// checkSignature verifies if the block announcement has a valid signature by the given pubKey -func (a *announceData) checkSignature(id enode.ID, update keyValueMap) error { - var sig []byte - if err := update.get("sign", &sig); err != nil { - return err - } - rlp, _ := rlp.EncodeToBytes(blockInfo{a.Hash, a.Number, a.Td}) - recPubkey, err := crypto.SigToPub(crypto.Keccak256(rlp), sig) - if err != nil { - return err - } - if id == enode.PubkeyToIDV4(recPubkey) { - return nil - } - return errors.New("wrong signature") -} - -type blockInfo struct { - Hash common.Hash // Hash of one particular block being announced - Number uint64 // Number of one particular block being announced - Td *big.Int // Total difficulty of one particular block being announced -} - -// hashOrNumber is a combined field for specifying an origin block. -type hashOrNumber struct { - Hash common.Hash // Block hash from which to retrieve headers (excludes Number) - Number uint64 // Block hash from which to retrieve headers (excludes Hash) -} - -// EncodeRLP is a specialized encoder for hashOrNumber to encode only one of the -// two contained union fields. -func (hn *hashOrNumber) EncodeRLP(w io.Writer) error { - if hn.Hash == (common.Hash{}) { - return rlp.Encode(w, hn.Number) - } - if hn.Number != 0 { - return fmt.Errorf("both origin hash (%x) and number (%d) provided", hn.Hash, hn.Number) - } - return rlp.Encode(w, hn.Hash) -} - -// DecodeRLP is a specialized decoder for hashOrNumber to decode the contents -// into either a block hash or a block number. -func (hn *hashOrNumber) DecodeRLP(s *rlp.Stream) error { - _, size, err := s.Kind() - switch { - case err != nil: - return err - case size == 32: - hn.Number = 0 - return s.Decode(&hn.Hash) - case size <= 8: - hn.Hash = common.Hash{} - return s.Decode(&hn.Number) - default: - return fmt.Errorf("invalid input size %d for origin", size) - } -} - -// CodeData is the network response packet for a node data retrieval. -type CodeData []struct { - Value []byte -} diff --git a/les/request_test.go b/les/request_test.go deleted file mode 100644 index 5e354b7efd..0000000000 --- a/les/request_test.go +++ /dev/null @@ -1,129 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -// Note: these tests are disabled now because they cannot work with the old sync -// mechanism removed but will be useful again once the PoS ultralight mode is implemented - -/* -import ( - "context" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/light" -) - -var testBankSecureTrieKey = secAddr(bankAddr) - -func secAddr(addr common.Address) []byte { - return crypto.Keccak256(addr[:]) -} - -type accessTestFn func(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest - -func TestBlockAccessLes2(t *testing.T) { testAccess(t, 2, tfBlockAccess) } -func TestBlockAccessLes3(t *testing.T) { testAccess(t, 3, tfBlockAccess) } -func TestBlockAccessLes4(t *testing.T) { testAccess(t, 4, tfBlockAccess) } - -func tfBlockAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest { - return &light.BlockRequest{Hash: bhash, Number: number} -} - -func TestReceiptsAccessLes2(t *testing.T) { testAccess(t, 2, tfReceiptsAccess) } -func TestReceiptsAccessLes3(t *testing.T) { testAccess(t, 3, tfReceiptsAccess) } -func TestReceiptsAccessLes4(t *testing.T) { testAccess(t, 4, tfReceiptsAccess) } - -func tfReceiptsAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest { - return &light.ReceiptsRequest{Hash: bhash, Number: number} -} - -func TestTrieEntryAccessLes2(t *testing.T) { testAccess(t, 2, tfTrieEntryAccess) } -func TestTrieEntryAccessLes3(t *testing.T) { testAccess(t, 3, tfTrieEntryAccess) } -func TestTrieEntryAccessLes4(t *testing.T) { testAccess(t, 4, tfTrieEntryAccess) } - -func tfTrieEntryAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest { - if number := rawdb.ReadHeaderNumber(db, bhash); number != nil { - return &light.TrieRequest{Id: light.StateTrieID(rawdb.ReadHeader(db, bhash, *number)), Key: testBankSecureTrieKey} - } - return nil -} - -func TestCodeAccessLes2(t *testing.T) { testAccess(t, 2, tfCodeAccess) } -func TestCodeAccessLes3(t *testing.T) { testAccess(t, 3, tfCodeAccess) } -func TestCodeAccessLes4(t *testing.T) { testAccess(t, 4, tfCodeAccess) } - -func tfCodeAccess(db ethdb.Database, bhash common.Hash, num uint64) light.OdrRequest { - number := rawdb.ReadHeaderNumber(db, bhash) - if number != nil { - return nil - } - header := rawdb.ReadHeader(db, bhash, *number) - if header.Number.Uint64() < testContractDeployed { - return nil - } - sti := light.StateTrieID(header) - ci := light.StorageTrieID(sti, testContractAddr, types.EmptyRootHash) - return &light.CodeRequest{Id: ci, Hash: crypto.Keccak256Hash(testContractCodeDeployed)} -} - -func testAccess(t *testing.T, protocol int, fn accessTestFn) { - // Assemble the test environment - netconfig := testnetConfig{ - blocks: 4, - protocol: protocol, - indexFn: nil, - connect: true, - nopruning: true, - } - server, client, tearDown := newClientServerEnv(t, netconfig) - defer tearDown() - - // Ensure the client has synced all necessary data. - clientHead := client.handler.backend.blockchain.CurrentHeader() - if clientHead.Number.Uint64() != 4 { - t.Fatalf("Failed to sync the chain with server, head: %v", clientHead.Number.Uint64()) - } - - test := func(expFail uint64) { - for i := uint64(0); i <= server.handler.blockchain.CurrentHeader().Number.Uint64(); i++ { - bhash := rawdb.ReadCanonicalHash(server.db, i) - if req := fn(client.db, bhash, i); req != nil { - ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond) - - err := client.handler.backend.odr.Retrieve(ctx, req) - cancel() - - got := err == nil - exp := i < expFail - if exp && !got { - t.Errorf("object retrieval failed") - } - if !exp && got { - t.Errorf("unexpected object retrieval success") - } - } - } - } - test(5) -} -*/ diff --git a/les/retrieve.go b/les/retrieve.go deleted file mode 100644 index 728f960a54..0000000000 --- a/les/retrieve.go +++ /dev/null @@ -1,421 +0,0 @@ -// Copyright 2017 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "context" - "errors" - "sync" - "time" - - "github.com/ethereum/go-ethereum/light" -) - -var ( - retryQueue = time.Millisecond * 100 - hardRequestTimeout = time.Second * 10 -) - -// retrieveManager is a layer on top of requestDistributor which takes care of -// matching replies by request ID and handles timeouts and resends if necessary. -type retrieveManager struct { - dist *requestDistributor - peers *serverPeerSet - softRequestTimeout func() time.Duration - - lock sync.RWMutex - sentReqs map[uint64]*sentReq -} - -// validatorFunc is a function that processes a reply message -type validatorFunc func(distPeer, *Msg) error - -// sentReq represents a request sent and tracked by retrieveManager -type sentReq struct { - rm *retrieveManager - req *distReq - id uint64 - validate validatorFunc - - eventsCh chan reqPeerEvent - stopCh chan struct{} - stopped bool - err error - - lock sync.RWMutex // protect access to sentTo map - sentTo map[distPeer]sentReqToPeer - - lastReqQueued bool // last request has been queued but not sent - lastReqSentTo distPeer // if not nil then last request has been sent to given peer but not timed out - reqSrtoCount int // number of requests that reached soft (but not hard) timeout -} - -// sentReqToPeer notifies the request-from-peer goroutine (tryRequest) about a response -// delivered by the given peer. Only one delivery is allowed per request per peer, -// after which delivered is set to true, the validity of the response is sent on the -// valid channel and no more responses are accepted. -type sentReqToPeer struct { - delivered, frozen bool - event chan int -} - -// reqPeerEvent is sent by the request-from-peer goroutine (tryRequest) to the -// request state machine (retrieveLoop) through the eventsCh channel. -type reqPeerEvent struct { - event int - peer distPeer -} - -const ( - rpSent = iota // if peer == nil, not sent (no suitable peers) - rpSoftTimeout - rpHardTimeout - rpDeliveredValid - rpDeliveredInvalid - rpNotDelivered -) - -// newRetrieveManager creates the retrieve manager -func newRetrieveManager(peers *serverPeerSet, dist *requestDistributor, srto func() time.Duration) *retrieveManager { - return &retrieveManager{ - peers: peers, - dist: dist, - sentReqs: make(map[uint64]*sentReq), - softRequestTimeout: srto, - } -} - -// retrieve sends a request (to multiple peers if necessary) and waits for an answer -// that is delivered through the deliver function and successfully validated by the -// validator callback. It returns when a valid answer is delivered or the context is -// cancelled. -func (rm *retrieveManager) retrieve(ctx context.Context, reqID uint64, req *distReq, val validatorFunc, shutdown chan struct{}) error { - sentReq := rm.sendReq(reqID, req, val) - select { - case <-sentReq.stopCh: - case <-ctx.Done(): - sentReq.stop(ctx.Err()) - case <-shutdown: - sentReq.stop(errors.New("client is shutting down")) - } - return sentReq.getError() -} - -// sendReq starts a process that keeps trying to retrieve a valid answer for a -// request from any suitable peers until stopped or succeeded. -func (rm *retrieveManager) sendReq(reqID uint64, req *distReq, val validatorFunc) *sentReq { - r := &sentReq{ - rm: rm, - req: req, - id: reqID, - sentTo: make(map[distPeer]sentReqToPeer), - stopCh: make(chan struct{}), - eventsCh: make(chan reqPeerEvent, 10), - validate: val, - } - - canSend := req.canSend - req.canSend = func(p distPeer) bool { - // add an extra check to canSend: the request has not been sent to the same peer before - r.lock.RLock() - _, sent := r.sentTo[p] - r.lock.RUnlock() - return !sent && canSend(p) - } - - request := req.request - req.request = func(p distPeer) func() { - // before actually sending the request, put an entry into the sentTo map - r.lock.Lock() - r.sentTo[p] = sentReqToPeer{delivered: false, frozen: false, event: make(chan int, 1)} - r.lock.Unlock() - return request(p) - } - rm.lock.Lock() - rm.sentReqs[reqID] = r - rm.lock.Unlock() - - go r.retrieveLoop() - return r -} - -// deliver is called by the LES protocol manager to deliver reply messages to waiting requests -func (rm *retrieveManager) deliver(peer distPeer, msg *Msg) error { - rm.lock.RLock() - req, ok := rm.sentReqs[msg.ReqID] - rm.lock.RUnlock() - - if ok { - return req.deliver(peer, msg) - } - return errResp(ErrUnexpectedResponse, "reqID = %v", msg.ReqID) -} - -// frozen is called by the LES protocol manager when a server has suspended its service and we -// should not expect an answer for the requests already sent there -func (rm *retrieveManager) frozen(peer distPeer) { - rm.lock.RLock() - defer rm.lock.RUnlock() - - for _, req := range rm.sentReqs { - req.frozen(peer) - } -} - -// reqStateFn represents a state of the retrieve loop state machine -type reqStateFn func() reqStateFn - -// retrieveLoop is the retrieval state machine event loop -func (r *sentReq) retrieveLoop() { - go r.tryRequest() - r.lastReqQueued = true - state := r.stateRequesting - - for state != nil { - state = state() - } - - r.rm.lock.Lock() - delete(r.rm.sentReqs, r.id) - r.rm.lock.Unlock() -} - -// stateRequesting: a request has been queued or sent recently; when it reaches soft timeout, -// a new request is sent to a new peer -func (r *sentReq) stateRequesting() reqStateFn { - select { - case ev := <-r.eventsCh: - r.update(ev) - switch ev.event { - case rpSent: - if ev.peer == nil { - // request send failed, no more suitable peers - if r.waiting() { - // we are already waiting for sent requests which may succeed so keep waiting - return r.stateNoMorePeers - } - // nothing to wait for, no more peers to ask, return with error - r.stop(light.ErrNoPeers) - // no need to go to stopped state because waiting() already returned false - return nil - } - case rpSoftTimeout: - // last request timed out, try asking a new peer - go r.tryRequest() - r.lastReqQueued = true - return r.stateRequesting - case rpDeliveredInvalid, rpNotDelivered: - // if it was the last sent request (set to nil by update) then start a new one - if !r.lastReqQueued && r.lastReqSentTo == nil { - go r.tryRequest() - r.lastReqQueued = true - } - return r.stateRequesting - case rpDeliveredValid: - r.stop(nil) - return r.stateStopped - } - return r.stateRequesting - case <-r.stopCh: - return r.stateStopped - } -} - -// stateNoMorePeers: could not send more requests because no suitable peers are available. -// Peers may become suitable for a certain request later or new peers may appear so we -// keep trying. -func (r *sentReq) stateNoMorePeers() reqStateFn { - select { - case <-time.After(retryQueue): - go r.tryRequest() - r.lastReqQueued = true - return r.stateRequesting - case ev := <-r.eventsCh: - r.update(ev) - if ev.event == rpDeliveredValid { - r.stop(nil) - return r.stateStopped - } - if r.waiting() { - return r.stateNoMorePeers - } - r.stop(light.ErrNoPeers) - return nil - case <-r.stopCh: - return r.stateStopped - } -} - -// stateStopped: request succeeded or cancelled, just waiting for some peers -// to either answer or time out hard -func (r *sentReq) stateStopped() reqStateFn { - for r.waiting() { - r.update(<-r.eventsCh) - } - return nil -} - -// update updates the queued/sent flags and timed out peers counter according to the event -func (r *sentReq) update(ev reqPeerEvent) { - switch ev.event { - case rpSent: - r.lastReqQueued = false - r.lastReqSentTo = ev.peer - case rpSoftTimeout: - r.lastReqSentTo = nil - r.reqSrtoCount++ - case rpHardTimeout: - r.reqSrtoCount-- - case rpDeliveredValid, rpDeliveredInvalid, rpNotDelivered: - if ev.peer == r.lastReqSentTo { - r.lastReqSentTo = nil - } else { - r.reqSrtoCount-- - } - } -} - -// waiting returns true if the retrieval mechanism is waiting for an answer from -// any peer -func (r *sentReq) waiting() bool { - return r.lastReqQueued || r.lastReqSentTo != nil || r.reqSrtoCount > 0 -} - -// tryRequest tries to send the request to a new peer and waits for it to either -// succeed or time out if it has been sent. It also sends the appropriate reqPeerEvent -// messages to the request's event channel. -func (r *sentReq) tryRequest() { - sent := r.rm.dist.queue(r.req) - var p distPeer - select { - case p = <-sent: - case <-r.stopCh: - if r.rm.dist.cancel(r.req) { - p = nil - } else { - p = <-sent - } - } - - r.eventsCh <- reqPeerEvent{rpSent, p} - if p == nil { - return - } - - hrto := false - - r.lock.RLock() - s, ok := r.sentTo[p] - r.lock.RUnlock() - if !ok { - panic(nil) - } - - defer func() { - pp, ok := p.(*serverPeer) - if hrto && ok { - pp.Log().Debug("Request timed out hard") - if r.rm.peers != nil { - r.rm.peers.unregister(pp.id) - } - } - }() - - select { - case event := <-s.event: - if event == rpNotDelivered { - r.lock.Lock() - delete(r.sentTo, p) - r.lock.Unlock() - } - r.eventsCh <- reqPeerEvent{event, p} - return - case <-time.After(r.rm.softRequestTimeout()): - r.eventsCh <- reqPeerEvent{rpSoftTimeout, p} - } - - select { - case event := <-s.event: - if event == rpNotDelivered { - r.lock.Lock() - delete(r.sentTo, p) - r.lock.Unlock() - } - r.eventsCh <- reqPeerEvent{event, p} - case <-time.After(hardRequestTimeout): - hrto = true - r.eventsCh <- reqPeerEvent{rpHardTimeout, p} - } -} - -// deliver a reply belonging to this request -func (r *sentReq) deliver(peer distPeer, msg *Msg) error { - r.lock.Lock() - defer r.lock.Unlock() - - s, ok := r.sentTo[peer] - if !ok || s.delivered { - return errResp(ErrUnexpectedResponse, "reqID = %v", msg.ReqID) - } - if s.frozen { - return nil - } - valid := r.validate(peer, msg) == nil - r.sentTo[peer] = sentReqToPeer{delivered: true, frozen: false, event: s.event} - if valid { - s.event <- rpDeliveredValid - } else { - s.event <- rpDeliveredInvalid - } - if !valid { - return errResp(ErrInvalidResponse, "reqID = %v", msg.ReqID) - } - return nil -} - -// frozen sends a "not delivered" event to the peer event channel belonging to the -// given peer if the request has been sent there, causing the state machine to not -// expect an answer and potentially even send the request to the same peer again -// when canSend allows it. -func (r *sentReq) frozen(peer distPeer) { - r.lock.Lock() - defer r.lock.Unlock() - - s, ok := r.sentTo[peer] - if ok && !s.delivered && !s.frozen { - r.sentTo[peer] = sentReqToPeer{delivered: false, frozen: true, event: s.event} - s.event <- rpNotDelivered - } -} - -// stop stops the retrieval process and sets an error code that will be returned -// by getError -func (r *sentReq) stop(err error) { - r.lock.Lock() - if !r.stopped { - r.stopped = true - r.err = err - close(r.stopCh) - } - r.lock.Unlock() -} - -// getError returns any retrieval error (either internally generated or set by the -// stop function) after stopCh has been closed -func (r *sentReq) getError() error { - return r.err -} diff --git a/les/server.go b/les/server.go deleted file mode 100644 index d84856c7fb..0000000000 --- a/les/server.go +++ /dev/null @@ -1,281 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "crypto/ecdsa" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/txpool" - "github.com/ethereum/go-ethereum/eth/ethconfig" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/les/flowcontrol" - vfs "github.com/ethereum/go-ethereum/les/vflux/server" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/node" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/rpc" -) - -var ( - defaultPosFactors = vfs.PriceFactors{TimeFactor: 0, CapacityFactor: 1, RequestFactor: 1} - defaultNegFactors = vfs.PriceFactors{TimeFactor: 0, CapacityFactor: 1, RequestFactor: 1} -) - -const defaultConnectedBias = time.Minute * 3 - -type ethBackend interface { - ArchiveMode() bool - BlockChain() *core.BlockChain - BloomIndexer() *core.ChainIndexer - ChainDb() ethdb.Database - Synced() bool - TxPool() *txpool.TxPool -} - -type LesServer struct { - lesCommons - - archiveMode bool // Flag whether the ethereum node runs in archive mode. - handler *serverHandler - peers *clientPeerSet - serverset *serverSet - vfluxServer *vfs.Server - privateKey *ecdsa.PrivateKey - - // Flow control and capacity management - fcManager *flowcontrol.ClientManager - costTracker *costTracker - defParams flowcontrol.ServerParams - servingQueue *servingQueue - clientPool *vfs.ClientPool - - minCapacity, maxCapacity uint64 - threadsIdle int // Request serving threads count when system is idle. - threadsBusy int // Request serving threads count when system is busy(block insertion). - - p2pSrv *p2p.Server -} - -func NewLesServer(node *node.Node, e ethBackend, config *ethconfig.Config) (*LesServer, error) { - lesDb, err := node.OpenDatabase("les.server", 0, 0, "eth/db/lesserver/", false) - if err != nil { - return nil, err - } - // Calculate the number of threads used to service the light client - // requests based on the user-specified value. - threads := config.LightServ * 4 / 100 - if threads < 4 { - threads = 4 - } - srv := &LesServer{ - lesCommons: lesCommons{ - genesis: e.BlockChain().Genesis().Hash(), - config: config, - chainConfig: e.BlockChain().Config(), - iConfig: light.DefaultServerIndexerConfig, - chainDb: e.ChainDb(), - lesDb: lesDb, - chainReader: e.BlockChain(), - chtIndexer: light.NewChtIndexer(e.ChainDb(), nil, params.CHTFrequency, params.HelperTrieProcessConfirmations, true), - bloomTrieIndexer: light.NewBloomTrieIndexer(e.ChainDb(), nil, params.BloomBitsBlocks, params.BloomTrieFrequency, true), - closeCh: make(chan struct{}), - }, - archiveMode: e.ArchiveMode(), - peers: newClientPeerSet(), - serverset: newServerSet(), - vfluxServer: vfs.NewServer(time.Millisecond * 10), - fcManager: flowcontrol.NewClientManager(nil, &mclock.System{}), - servingQueue: newServingQueue(int64(time.Millisecond*10), float64(config.LightServ)/100), - threadsBusy: config.LightServ/100 + 1, - threadsIdle: threads, - p2pSrv: node.Server(), - } - issync := e.Synced - if config.LightNoSyncServe { - issync = func() bool { return true } - } - srv.handler = newServerHandler(srv, e.BlockChain(), e.ChainDb(), e.TxPool(), issync) - srv.costTracker, srv.minCapacity = newCostTracker(e.ChainDb(), config) - - // Initialize the bloom trie indexer. - e.BloomIndexer().AddChildIndexer(srv.bloomTrieIndexer) - - // Initialize server capacity management fields. - srv.defParams = flowcontrol.ServerParams{ - BufLimit: srv.minCapacity * bufLimitRatio, - MinRecharge: srv.minCapacity, - } - // LES flow control tries to more or less guarantee the possibility for the - // clients to send a certain amount of requests at any time and get a quick - // response. Most of the clients want this guarantee but don't actually need - // to send requests most of the time. Our goal is to serve as many clients as - // possible while the actually used server capacity does not exceed the limits - totalRecharge := srv.costTracker.totalRecharge() - srv.maxCapacity = srv.minCapacity * uint64(srv.config.LightPeers) - if totalRecharge > srv.maxCapacity { - srv.maxCapacity = totalRecharge - } - srv.fcManager.SetCapacityLimits(srv.minCapacity, srv.maxCapacity, srv.minCapacity*2) - srv.clientPool = vfs.NewClientPool(lesDb, srv.minCapacity, defaultConnectedBias, mclock.System{}, issync) - srv.clientPool.Start() - srv.clientPool.SetDefaultFactors(defaultPosFactors, defaultNegFactors) - srv.vfluxServer.Register(srv.clientPool, "les", "Ethereum light client service") - srv.chtIndexer.Start(e.BlockChain()) - - node.RegisterProtocols(srv.Protocols()) - node.RegisterAPIs(srv.APIs()) - node.RegisterLifecycle(srv) - return srv, nil -} - -func (s *LesServer) APIs() []rpc.API { - return []rpc.API{ - { - Namespace: "les", - Service: NewLightServerAPI(s), - }, - { - Namespace: "debug", - Service: NewDebugAPI(s), - }, - } -} - -func (s *LesServer) Protocols() []p2p.Protocol { - ps := s.makeProtocols(ServerProtocolVersions, s.handler.runPeer, func(id enode.ID) interface{} { - if p := s.peers.peer(id); p != nil { - return p.Info() - } - return nil - }, nil) - // Add "les" ENR entries. - for i := range ps { - ps[i].Attributes = []enr.Entry{&lesEntry{ - VfxVersion: 1, - }} - } - return ps -} - -// Start starts the LES server -func (s *LesServer) Start() error { - s.privateKey = s.p2pSrv.PrivateKey - s.peers.setSignerKey(s.privateKey) - s.handler.start() - s.wg.Add(1) - go s.capacityManagement() - if s.p2pSrv.DiscV5 != nil { - s.p2pSrv.DiscV5.RegisterTalkHandler("vfx", s.vfluxServer.ServeEncoded) - } - return nil -} - -// Stop stops the LES service -func (s *LesServer) Stop() error { - close(s.closeCh) - - s.clientPool.Stop() - if s.serverset != nil { - s.serverset.close() - } - s.peers.close() - s.fcManager.Stop() - s.costTracker.stop() - s.handler.stop() - s.servingQueue.stop() - if s.vfluxServer != nil { - s.vfluxServer.Stop() - } - - // Note, bloom trie indexer is closed by parent bloombits indexer. - if s.chtIndexer != nil { - s.chtIndexer.Close() - } - if s.lesDb != nil { - s.lesDb.Close() - } - s.wg.Wait() - log.Info("Les server stopped") - - return nil -} - -// capacityManagement starts an event handler loop that updates the recharge curve of -// the client manager and adjusts the client pool's size according to the total -// capacity updates coming from the client manager -func (s *LesServer) capacityManagement() { - defer s.wg.Done() - - processCh := make(chan bool, 100) - sub := s.handler.blockchain.SubscribeBlockProcessingEvent(processCh) - defer sub.Unsubscribe() - - totalRechargeCh := make(chan uint64, 100) - totalRecharge := s.costTracker.subscribeTotalRecharge(totalRechargeCh) - - totalCapacityCh := make(chan uint64, 100) - totalCapacity := s.fcManager.SubscribeTotalCapacity(totalCapacityCh) - s.clientPool.SetLimits(uint64(s.config.LightPeers), totalCapacity) - - var ( - busy bool - freePeers uint64 - blockProcess mclock.AbsTime - ) - updateRecharge := func() { - if busy { - s.servingQueue.setThreads(s.threadsBusy) - s.fcManager.SetRechargeCurve(flowcontrol.PieceWiseLinear{{0, 0}, {totalRecharge, totalRecharge}}) - } else { - s.servingQueue.setThreads(s.threadsIdle) - s.fcManager.SetRechargeCurve(flowcontrol.PieceWiseLinear{{0, 0}, {totalRecharge / 10, totalRecharge}, {totalRecharge, totalRecharge}}) - } - } - updateRecharge() - - for { - select { - case busy = <-processCh: - if busy { - blockProcess = mclock.Now() - } else { - blockProcessingTimer.Update(time.Duration(mclock.Now() - blockProcess)) - } - updateRecharge() - case totalRecharge = <-totalRechargeCh: - totalRechargeGauge.Update(int64(totalRecharge)) - updateRecharge() - case totalCapacity = <-totalCapacityCh: - totalCapacityGauge.Update(int64(totalCapacity)) - newFreePeers := totalCapacity / s.minCapacity - if newFreePeers < freePeers && newFreePeers < uint64(s.config.LightPeers) { - log.Warn("Reduced free peer connections", "from", freePeers, "to", newFreePeers) - } - freePeers = newFreePeers - s.clientPool.SetLimits(uint64(s.config.LightPeers), totalCapacity) - case <-s.closeCh: - return - } - } -} diff --git a/les/server_handler.go b/les/server_handler.go deleted file mode 100644 index 5b3505064b..0000000000 --- a/les/server_handler.go +++ /dev/null @@ -1,436 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "errors" - "fmt" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/forkid" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/txpool" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/les/flowcontrol" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/metrics" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/trie" -) - -const ( - softResponseLimit = 2 * 1024 * 1024 // Target maximum size of returned blocks, headers or node data. - estHeaderRlpSize = 500 // Approximate size of an RLP encoded block header - - MaxHeaderFetch = 192 // Amount of block headers to be fetched per retrieval request - MaxBodyFetch = 32 // Amount of block bodies to be fetched per retrieval request - MaxReceiptFetch = 128 // Amount of transaction receipts to allow fetching per request - MaxCodeFetch = 64 // Amount of contract codes to allow fetching per request - MaxProofsFetch = 64 // Amount of merkle proofs to be fetched per retrieval request - MaxHelperTrieProofsFetch = 64 // Amount of helper tries to be fetched per retrieval request - MaxTxSend = 64 // Amount of transactions to be send per request - MaxTxStatus = 256 // Amount of transactions to queried per request -) - -var ( - errTooManyInvalidRequest = errors.New("too many invalid requests made") -) - -// serverHandler is responsible for serving light client and process -// all incoming light requests. -type serverHandler struct { - forkFilter forkid.Filter - blockchain *core.BlockChain - chainDb ethdb.Database - txpool *txpool.TxPool - server *LesServer - - closeCh chan struct{} // Channel used to exit all background routines of handler. - wg sync.WaitGroup // WaitGroup used to track all background routines of handler. - synced func() bool // Callback function used to determine whether local node is synced. - - // Testing fields - addTxsSync bool -} - -func newServerHandler(server *LesServer, blockchain *core.BlockChain, chainDb ethdb.Database, txpool *txpool.TxPool, synced func() bool) *serverHandler { - handler := &serverHandler{ - forkFilter: forkid.NewFilter(blockchain), - server: server, - blockchain: blockchain, - chainDb: chainDb, - txpool: txpool, - closeCh: make(chan struct{}), - synced: synced, - } - return handler -} - -// start starts the server handler. -func (h *serverHandler) start() { - h.wg.Add(1) - go h.broadcastLoop() -} - -// stop stops the server handler. -func (h *serverHandler) stop() { - close(h.closeCh) - h.wg.Wait() -} - -// runPeer is the p2p protocol run function for the given version. -func (h *serverHandler) runPeer(version uint, p *p2p.Peer, rw p2p.MsgReadWriter) error { - peer := newClientPeer(int(version), h.server.config.NetworkId, p, newMeteredMsgWriter(rw, int(version))) - defer peer.close() - h.wg.Add(1) - defer h.wg.Done() - return h.handle(peer) -} - -func (h *serverHandler) handle(p *clientPeer) error { - p.Log().Debug("Light Ethereum peer connected", "name", p.Name()) - - // Execute the LES handshake - var ( - head = h.blockchain.CurrentHeader() - hash = head.Hash() - number = head.Number.Uint64() - td = h.blockchain.GetTd(hash, number) - forkID = forkid.NewID(h.blockchain.Config(), h.blockchain.Genesis(), number, head.Time) - ) - if err := p.Handshake(td, hash, number, h.blockchain.Genesis().Hash(), forkID, h.forkFilter, h.server); err != nil { - p.Log().Debug("Light Ethereum handshake failed", "err", err) - return err - } - // Connected to another server, no messages expected, just wait for disconnection - if p.server { - if err := h.server.serverset.register(p); err != nil { - return err - } - _, err := p.rw.ReadMsg() - h.server.serverset.unregister(p) - return err - } - // Setup flow control mechanism for the peer - p.fcClient = flowcontrol.NewClientNode(h.server.fcManager, p.fcParams) - defer p.fcClient.Disconnect() - - // Reject light clients if server is not synced. Put this checking here, so - // that "non-synced" les-server peers are still allowed to keep the connection. - if !h.synced() { - p.Log().Debug("Light server not synced, rejecting peer") - return p2p.DiscRequested - } - - // Register the peer into the peerset and clientpool - if err := h.server.peers.register(p); err != nil { - return err - } - if p.balance = h.server.clientPool.Register(p); p.balance == nil { - h.server.peers.unregister(p.ID()) - p.Log().Debug("Client pool already closed") - return p2p.DiscRequested - } - p.connectedAt = mclock.Now() - - var wg sync.WaitGroup // Wait group used to track all in-flight task routines. - defer func() { - wg.Wait() // Ensure all background task routines have exited. - h.server.clientPool.Unregister(p) - h.server.peers.unregister(p.ID()) - p.balance = nil - connectionTimer.Update(time.Duration(mclock.Now() - p.connectedAt)) - }() - - // Mark the peer as being served. - p.serving.Store(true) - defer p.serving.Store(false) - - // Spawn a main loop to handle all incoming messages. - for { - select { - case err := <-p.errCh: - p.Log().Debug("Failed to send light ethereum response", "err", err) - return err - default: - } - if err := h.handleMsg(p, &wg); err != nil { - p.Log().Debug("Light Ethereum message handling failed", "err", err) - return err - } - } -} - -// beforeHandle will do a series of prechecks before handling message. -func (h *serverHandler) beforeHandle(p *clientPeer, reqID, responseCount uint64, msg p2p.Msg, reqCnt uint64, maxCount uint64) (*servingTask, uint64) { - // Ensure that the request sent by client peer is valid - inSizeCost := h.server.costTracker.realCost(0, msg.Size, 0) - if reqCnt == 0 || reqCnt > maxCount { - p.fcClient.OneTimeCost(inSizeCost) - return nil, 0 - } - // Ensure that the client peer complies with the flow control - // rules agreed by both sides. - if p.isFrozen() { - p.fcClient.OneTimeCost(inSizeCost) - return nil, 0 - } - maxCost := p.fcCosts.getMaxCost(msg.Code, reqCnt) - accepted, bufShort, priority := p.fcClient.AcceptRequest(reqID, responseCount, maxCost) - if !accepted { - p.freeze() - p.Log().Error("Request came too early", "remaining", common.PrettyDuration(time.Duration(bufShort*1000000/p.fcParams.MinRecharge))) - p.fcClient.OneTimeCost(inSizeCost) - return nil, 0 - } - // Create a multi-stage task, estimate the time it takes for the task to - // execute, and cache it in the request service queue. - factor := h.server.costTracker.globalFactor() - if factor < 0.001 { - factor = 1 - p.Log().Error("Invalid global cost factor", "factor", factor) - } - maxTime := uint64(float64(maxCost) / factor) - task := h.server.servingQueue.newTask(p, maxTime, priority) - if !task.start() { - p.fcClient.RequestProcessed(reqID, responseCount, maxCost, inSizeCost) - return nil, 0 - } - return task, maxCost -} - -// Afterhandle will perform a series of operations after message handling, -// such as updating flow control data, sending reply, etc. -func (h *serverHandler) afterHandle(p *clientPeer, reqID, responseCount uint64, msg p2p.Msg, maxCost uint64, reqCnt uint64, task *servingTask, reply *reply) { - if reply != nil { - task.done() - } - p.responseLock.Lock() - defer p.responseLock.Unlock() - - // Short circuit if the client is already frozen. - if p.isFrozen() { - realCost := h.server.costTracker.realCost(task.servingTime, msg.Size, 0) - p.fcClient.RequestProcessed(reqID, responseCount, maxCost, realCost) - return - } - // Positive correction buffer value with real cost. - var replySize uint32 - if reply != nil { - replySize = reply.size() - } - var realCost uint64 - if h.server.costTracker.testing { - realCost = maxCost // Assign a fake cost for testing purpose - } else { - realCost = h.server.costTracker.realCost(task.servingTime, msg.Size, replySize) - if realCost > maxCost { - realCost = maxCost - } - } - bv := p.fcClient.RequestProcessed(reqID, responseCount, maxCost, realCost) - if reply != nil { - // Feed cost tracker request serving statistic. - h.server.costTracker.updateStats(msg.Code, reqCnt, task.servingTime, realCost) - // Reduce priority "balance" for the specific peer. - p.balance.RequestServed(realCost) - p.queueSend(func() { - if err := reply.send(bv); err != nil { - select { - case p.errCh <- err: - default: - } - } - }) - } -} - -// handleMsg is invoked whenever an inbound message is received from a remote -// peer. The remote connection is torn down upon returning any error. -func (h *serverHandler) handleMsg(p *clientPeer, wg *sync.WaitGroup) error { - // Read the next message from the remote peer, and ensure it's fully consumed - msg, err := p.rw.ReadMsg() - if err != nil { - return err - } - p.Log().Trace("Light Ethereum message arrived", "code", msg.Code, "bytes", msg.Size) - - // Discard large message which exceeds the limitation. - if msg.Size > ProtocolMaxMsgSize { - clientErrorMeter.Mark(1) - return errResp(ErrMsgTooLarge, "%v > %v", msg.Size, ProtocolMaxMsgSize) - } - defer msg.Discard() - - // Lookup the request handler table, ensure it's supported - // message type by the protocol. - req, ok := Les3[msg.Code] - if !ok { - p.Log().Trace("Received invalid message", "code", msg.Code) - clientErrorMeter.Mark(1) - return errResp(ErrInvalidMsgCode, "%v", msg.Code) - } - p.Log().Trace("Received " + req.Name) - - // Decode the p2p message, resolve the concrete handler for it. - serve, reqID, reqCnt, err := req.Handle(msg) - if err != nil { - clientErrorMeter.Mark(1) - return errResp(ErrDecode, "%v: %v", msg, err) - } - if metrics.EnabledExpensive { - req.InPacketsMeter.Mark(1) - req.InTrafficMeter.Mark(int64(msg.Size)) - } - p.responseCount++ - responseCount := p.responseCount - - // First check this client message complies all rules before - // handling it and return a processor if all checks are passed. - task, maxCost := h.beforeHandle(p, reqID, responseCount, msg, reqCnt, req.MaxCount) - if task == nil { - return nil - } - wg.Add(1) - go func() { - defer wg.Done() - - reply := serve(h, p, task.waitOrStop) - h.afterHandle(p, reqID, responseCount, msg, maxCost, reqCnt, task, reply) - - if metrics.EnabledExpensive { - size := uint32(0) - if reply != nil { - size = reply.size() - } - req.OutPacketsMeter.Mark(1) - req.OutTrafficMeter.Mark(int64(size)) - req.ServingTimeMeter.Update(time.Duration(task.servingTime)) - } - }() - // If the client has made too much invalid request(e.g. request a non-existent data), - // reject them to prevent SPAM attack. - if p.getInvalid() > maxRequestErrors { - clientErrorMeter.Mark(1) - return errTooManyInvalidRequest - } - return nil -} - -// BlockChain implements serverBackend -func (h *serverHandler) BlockChain() *core.BlockChain { - return h.blockchain -} - -// TxPool implements serverBackend -func (h *serverHandler) TxPool() *txpool.TxPool { - return h.txpool -} - -// ArchiveMode implements serverBackend -func (h *serverHandler) ArchiveMode() bool { - return h.server.archiveMode -} - -// AddTxsSync implements serverBackend -func (h *serverHandler) AddTxsSync() bool { - return h.addTxsSync -} - -// getAccount retrieves an account from the state based on root. -func getAccount(triedb *trie.Database, root common.Hash, addr common.Address) (types.StateAccount, error) { - trie, err := trie.NewStateTrie(trie.StateTrieID(root), triedb) - if err != nil { - return types.StateAccount{}, err - } - acc, err := trie.GetAccount(addr) - if err != nil { - return types.StateAccount{}, err - } - if acc == nil { - return types.StateAccount{}, fmt.Errorf("account %#x is not present", addr) - } - return *acc, nil -} - -// GetHelperTrie returns the post-processed trie root for the given trie ID and section index -func (h *serverHandler) GetHelperTrie(typ uint, index uint64) *trie.Trie { - var ( - root common.Hash - prefix string - ) - switch typ { - case htCanonical: - sectionHead := rawdb.ReadCanonicalHash(h.chainDb, (index+1)*h.server.iConfig.ChtSize-1) - root, prefix = light.GetChtRoot(h.chainDb, index, sectionHead), string(rawdb.ChtTablePrefix) - case htBloomBits: - sectionHead := rawdb.ReadCanonicalHash(h.chainDb, (index+1)*h.server.iConfig.BloomTrieSize-1) - root, prefix = light.GetBloomTrieRoot(h.chainDb, index, sectionHead), string(rawdb.BloomTrieTablePrefix) - } - if root == (common.Hash{}) { - return nil - } - triedb := trie.NewDatabase(rawdb.NewTable(h.chainDb, prefix), trie.HashDefaults) - trie, _ := trie.New(trie.TrieID(root), triedb) - return trie -} - -// broadcastLoop broadcasts new block information to all connected light -// clients. According to the agreement between client and server, server should -// only broadcast new announcement if the total difficulty is higher than the -// last one. Besides server will add the signature if client requires. -func (h *serverHandler) broadcastLoop() { - defer h.wg.Done() - - headCh := make(chan core.ChainHeadEvent, 10) - headSub := h.blockchain.SubscribeChainHeadEvent(headCh) - defer headSub.Unsubscribe() - - var ( - lastHead = h.blockchain.CurrentHeader() - lastTd = common.Big0 - ) - for { - select { - case ev := <-headCh: - header := ev.Block.Header() - hash, number := header.Hash(), header.Number.Uint64() - td := h.blockchain.GetTd(hash, number) - if td == nil || td.Cmp(lastTd) <= 0 { - continue - } - var reorg uint64 - if lastHead != nil { - // If a setHead has been performed, the common ancestor can be nil. - if ancestor := rawdb.FindCommonAncestor(h.chainDb, header, lastHead); ancestor != nil { - reorg = lastHead.Number.Uint64() - ancestor.Number.Uint64() - } - } - lastHead, lastTd = header, td - log.Debug("Announcing block to peers", "number", number, "hash", hash, "td", td, "reorg", reorg) - h.server.peers.broadcast(announceData{Hash: hash, Number: number, Td: td, ReorgDepth: reorg}) - case <-h.closeCh: - return - } - } -} diff --git a/les/server_requests.go b/les/server_requests.go deleted file mode 100644 index cc5b601713..0000000000 --- a/les/server_requests.go +++ /dev/null @@ -1,566 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "encoding/binary" - "encoding/json" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/state" - "github.com/ethereum/go-ethereum/core/txpool" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/metrics" - "github.com/ethereum/go-ethereum/rlp" - "github.com/ethereum/go-ethereum/trie" - "github.com/ethereum/go-ethereum/trie/trienode" -) - -// serverBackend defines the backend functions needed for serving LES requests -type serverBackend interface { - ArchiveMode() bool - AddTxsSync() bool - BlockChain() *core.BlockChain - TxPool() *txpool.TxPool - GetHelperTrie(typ uint, index uint64) *trie.Trie -} - -// Decoder is implemented by the messages passed to the handler functions -type Decoder interface { - Decode(val interface{}) error -} - -// RequestType is a static struct that describes an LES request type and references -// its handler function. -type RequestType struct { - Name string - MaxCount uint64 - InPacketsMeter, InTrafficMeter, OutPacketsMeter, OutTrafficMeter metrics.Meter - ServingTimeMeter metrics.Timer - Handle func(msg Decoder) (serve serveRequestFn, reqID, amount uint64, err error) -} - -// serveRequestFn is returned by the request handler functions after decoding the request. -// This function does the actual request serving using the supplied backend. waitOrStop is -// called between serving individual request items and may block if the serving process -// needs to be throttled. If it returns false then the process is terminated. -// The reply is not sent by this function yet. The flow control feedback value is supplied -// by the protocol handler when calling the send function of the returned reply struct. -type serveRequestFn func(backend serverBackend, peer *clientPeer, waitOrStop func() bool) *reply - -// Les3 contains the request types supported by les/2 and les/3 -var Les3 = map[uint64]RequestType{ - GetBlockHeadersMsg: { - Name: "block header request", - MaxCount: MaxHeaderFetch, - InPacketsMeter: miscInHeaderPacketsMeter, - InTrafficMeter: miscInHeaderTrafficMeter, - OutPacketsMeter: miscOutHeaderPacketsMeter, - OutTrafficMeter: miscOutHeaderTrafficMeter, - ServingTimeMeter: miscServingTimeHeaderTimer, - Handle: handleGetBlockHeaders, - }, - GetBlockBodiesMsg: { - Name: "block bodies request", - MaxCount: MaxBodyFetch, - InPacketsMeter: miscInBodyPacketsMeter, - InTrafficMeter: miscInBodyTrafficMeter, - OutPacketsMeter: miscOutBodyPacketsMeter, - OutTrafficMeter: miscOutBodyTrafficMeter, - ServingTimeMeter: miscServingTimeBodyTimer, - Handle: handleGetBlockBodies, - }, - GetCodeMsg: { - Name: "code request", - MaxCount: MaxCodeFetch, - InPacketsMeter: miscInCodePacketsMeter, - InTrafficMeter: miscInCodeTrafficMeter, - OutPacketsMeter: miscOutCodePacketsMeter, - OutTrafficMeter: miscOutCodeTrafficMeter, - ServingTimeMeter: miscServingTimeCodeTimer, - Handle: handleGetCode, - }, - GetReceiptsMsg: { - Name: "receipts request", - MaxCount: MaxReceiptFetch, - InPacketsMeter: miscInReceiptPacketsMeter, - InTrafficMeter: miscInReceiptTrafficMeter, - OutPacketsMeter: miscOutReceiptPacketsMeter, - OutTrafficMeter: miscOutReceiptTrafficMeter, - ServingTimeMeter: miscServingTimeReceiptTimer, - Handle: handleGetReceipts, - }, - GetProofsV2Msg: { - Name: "les/2 proofs request", - MaxCount: MaxProofsFetch, - InPacketsMeter: miscInTrieProofPacketsMeter, - InTrafficMeter: miscInTrieProofTrafficMeter, - OutPacketsMeter: miscOutTrieProofPacketsMeter, - OutTrafficMeter: miscOutTrieProofTrafficMeter, - ServingTimeMeter: miscServingTimeTrieProofTimer, - Handle: handleGetProofs, - }, - GetHelperTrieProofsMsg: { - Name: "helper trie proof request", - MaxCount: MaxHelperTrieProofsFetch, - InPacketsMeter: miscInHelperTriePacketsMeter, - InTrafficMeter: miscInHelperTrieTrafficMeter, - OutPacketsMeter: miscOutHelperTriePacketsMeter, - OutTrafficMeter: miscOutHelperTrieTrafficMeter, - ServingTimeMeter: miscServingTimeHelperTrieTimer, - Handle: handleGetHelperTrieProofs, - }, - SendTxV2Msg: { - Name: "new transactions", - MaxCount: MaxTxSend, - InPacketsMeter: miscInTxsPacketsMeter, - InTrafficMeter: miscInTxsTrafficMeter, - OutPacketsMeter: miscOutTxsPacketsMeter, - OutTrafficMeter: miscOutTxsTrafficMeter, - ServingTimeMeter: miscServingTimeTxTimer, - Handle: handleSendTx, - }, - GetTxStatusMsg: { - Name: "transaction status query request", - MaxCount: MaxTxStatus, - InPacketsMeter: miscInTxStatusPacketsMeter, - InTrafficMeter: miscInTxStatusTrafficMeter, - OutPacketsMeter: miscOutTxStatusPacketsMeter, - OutTrafficMeter: miscOutTxStatusTrafficMeter, - ServingTimeMeter: miscServingTimeTxStatusTimer, - Handle: handleGetTxStatus, - }, -} - -// handleGetBlockHeaders handles a block header request -func handleGetBlockHeaders(msg Decoder) (serveRequestFn, uint64, uint64, error) { - var r GetBlockHeadersPacket - if err := msg.Decode(&r); err != nil { - return nil, 0, 0, err - } - return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply { - // Gather headers until the fetch or network limits is reached - var ( - bc = backend.BlockChain() - hashMode = r.Query.Origin.Hash != (common.Hash{}) - first = true - maxNonCanonical = uint64(100) - bytes common.StorageSize - headers []*types.Header - unknown bool - ) - for !unknown && len(headers) < int(r.Query.Amount) && bytes < softResponseLimit { - if !first && !waitOrStop() { - return nil - } - // Retrieve the next header satisfying the r - var origin *types.Header - if hashMode { - if first { - origin = bc.GetHeaderByHash(r.Query.Origin.Hash) - if origin != nil { - r.Query.Origin.Number = origin.Number.Uint64() - } - } else { - origin = bc.GetHeader(r.Query.Origin.Hash, r.Query.Origin.Number) - } - } else { - origin = bc.GetHeaderByNumber(r.Query.Origin.Number) - } - if origin == nil { - break - } - headers = append(headers, origin) - bytes += estHeaderRlpSize - - // Advance to the next header of the r - switch { - case hashMode && r.Query.Reverse: - // Hash based traversal towards the genesis block - ancestor := r.Query.Skip + 1 - if ancestor == 0 { - unknown = true - } else { - r.Query.Origin.Hash, r.Query.Origin.Number = bc.GetAncestor(r.Query.Origin.Hash, r.Query.Origin.Number, ancestor, &maxNonCanonical) - unknown = r.Query.Origin.Hash == common.Hash{} - } - case hashMode && !r.Query.Reverse: - // Hash based traversal towards the leaf block - var ( - current = origin.Number.Uint64() - next = current + r.Query.Skip + 1 - ) - if next <= current { - infos, _ := json.Marshal(p.Peer.Info()) - p.Log().Warn("GetBlockHeaders skip overflow attack", "current", current, "skip", r.Query.Skip, "next", next, "attacker", string(infos)) - unknown = true - } else { - if header := bc.GetHeaderByNumber(next); header != nil { - nextHash := header.Hash() - expOldHash, _ := bc.GetAncestor(nextHash, next, r.Query.Skip+1, &maxNonCanonical) - if expOldHash == r.Query.Origin.Hash { - r.Query.Origin.Hash, r.Query.Origin.Number = nextHash, next - } else { - unknown = true - } - } else { - unknown = true - } - } - case r.Query.Reverse: - // Number based traversal towards the genesis block - if r.Query.Origin.Number >= r.Query.Skip+1 { - r.Query.Origin.Number -= r.Query.Skip + 1 - } else { - unknown = true - } - - case !r.Query.Reverse: - // Number based traversal towards the leaf block - r.Query.Origin.Number += r.Query.Skip + 1 - } - first = false - } - return p.replyBlockHeaders(r.ReqID, headers) - }, r.ReqID, r.Query.Amount, nil -} - -// handleGetBlockBodies handles a block body request -func handleGetBlockBodies(msg Decoder) (serveRequestFn, uint64, uint64, error) { - var r GetBlockBodiesPacket - if err := msg.Decode(&r); err != nil { - return nil, 0, 0, err - } - return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply { - var ( - bytes int - bodies []rlp.RawValue - ) - bc := backend.BlockChain() - for i, hash := range r.Hashes { - if i != 0 && !waitOrStop() { - return nil - } - if bytes >= softResponseLimit { - break - } - body := bc.GetBodyRLP(hash) - if body == nil { - p.bumpInvalid() - continue - } - bodies = append(bodies, body) - bytes += len(body) - } - return p.replyBlockBodiesRLP(r.ReqID, bodies) - }, r.ReqID, uint64(len(r.Hashes)), nil -} - -// handleGetCode handles a contract code request -func handleGetCode(msg Decoder) (serveRequestFn, uint64, uint64, error) { - var r GetCodePacket - if err := msg.Decode(&r); err != nil { - return nil, 0, 0, err - } - return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply { - var ( - bytes int - data [][]byte - ) - bc := backend.BlockChain() - for i, request := range r.Reqs { - if i != 0 && !waitOrStop() { - return nil - } - // Look up the root hash belonging to the request - header := bc.GetHeaderByHash(request.BHash) - if header == nil { - p.Log().Warn("Failed to retrieve associate header for code", "hash", request.BHash) - p.bumpInvalid() - continue - } - // Refuse to search stale state data in the database since looking for - // a non-exist key is kind of expensive. - local := bc.CurrentHeader().Number.Uint64() - if !backend.ArchiveMode() && header.Number.Uint64()+core.TriesInMemory <= local { - p.Log().Debug("Reject stale code request", "number", header.Number.Uint64(), "head", local) - p.bumpInvalid() - continue - } - address := common.BytesToAddress(request.AccountAddress) - account, err := getAccount(bc.TrieDB(), header.Root, address) - if err != nil { - p.Log().Warn("Failed to retrieve account for code", "block", header.Number, "hash", header.Hash(), "account", address, "err", err) - p.bumpInvalid() - continue - } - code, err := bc.StateCache().ContractCode(address, common.BytesToHash(account.CodeHash)) - if err != nil { - p.Log().Warn("Failed to retrieve account code", "block", header.Number, "hash", header.Hash(), "account", address, "codehash", common.BytesToHash(account.CodeHash), "err", err) - continue - } - // Accumulate the code and abort if enough data was retrieved - data = append(data, code) - if bytes += len(code); bytes >= softResponseLimit { - break - } - } - return p.replyCode(r.ReqID, data) - }, r.ReqID, uint64(len(r.Reqs)), nil -} - -// handleGetReceipts handles a block receipts request -func handleGetReceipts(msg Decoder) (serveRequestFn, uint64, uint64, error) { - var r GetReceiptsPacket - if err := msg.Decode(&r); err != nil { - return nil, 0, 0, err - } - return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply { - var ( - bytes int - receipts []rlp.RawValue - ) - bc := backend.BlockChain() - for i, hash := range r.Hashes { - if i != 0 && !waitOrStop() { - return nil - } - if bytes >= softResponseLimit { - break - } - // Retrieve the requested block's receipts, skipping if unknown to us - results := bc.GetReceiptsByHash(hash) - if results == nil { - if header := bc.GetHeaderByHash(hash); header == nil || header.ReceiptHash != types.EmptyReceiptsHash { - p.bumpInvalid() - continue - } - } - // If known, encode and queue for response packet - if encoded, err := rlp.EncodeToBytes(results); err != nil { - log.Error("Failed to encode receipt", "err", err) - } else { - receipts = append(receipts, encoded) - bytes += len(encoded) - } - } - return p.replyReceiptsRLP(r.ReqID, receipts) - }, r.ReqID, uint64(len(r.Hashes)), nil -} - -// handleGetProofs handles a proof request -func handleGetProofs(msg Decoder) (serveRequestFn, uint64, uint64, error) { - var r GetProofsPacket - if err := msg.Decode(&r); err != nil { - return nil, 0, 0, err - } - return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply { - var ( - lastBHash common.Hash - root common.Hash - header *types.Header - err error - ) - bc := backend.BlockChain() - nodes := trienode.NewProofSet() - - for i, request := range r.Reqs { - if i != 0 && !waitOrStop() { - return nil - } - // Look up the root hash belonging to the request - if request.BHash != lastBHash { - root, lastBHash = common.Hash{}, request.BHash - - if header = bc.GetHeaderByHash(request.BHash); header == nil { - p.Log().Warn("Failed to retrieve header for proof", "hash", request.BHash) - p.bumpInvalid() - continue - } - // Refuse to search stale state data in the database since looking for - // a non-exist key is kind of expensive. - local := bc.CurrentHeader().Number.Uint64() - if !backend.ArchiveMode() && header.Number.Uint64()+core.TriesInMemory <= local { - p.Log().Debug("Reject stale trie request", "number", header.Number.Uint64(), "head", local) - p.bumpInvalid() - continue - } - root = header.Root - } - // If a header lookup failed (non existent), ignore subsequent requests for the same header - if root == (common.Hash{}) { - p.bumpInvalid() - continue - } - // Open the account or storage trie for the request - statedb := bc.StateCache() - - var trie state.Trie - switch len(request.AccountAddress) { - case 0: - // No account key specified, open an account trie - trie, err = statedb.OpenTrie(root) - if trie == nil || err != nil { - p.Log().Warn("Failed to open storage trie for proof", "block", header.Number, "hash", header.Hash(), "root", root, "err", err) - continue - } - default: - // Account key specified, open a storage trie - address := common.BytesToAddress(request.AccountAddress) - account, err := getAccount(bc.TrieDB(), root, address) - if err != nil { - p.Log().Warn("Failed to retrieve account for proof", "block", header.Number, "hash", header.Hash(), "account", address, "err", err) - p.bumpInvalid() - continue - } - trie, err = statedb.OpenStorageTrie(root, address, account.Root, nil) - if trie == nil || err != nil { - p.Log().Warn("Failed to open storage trie for proof", "block", header.Number, "hash", header.Hash(), "account", address, "root", account.Root, "err", err) - continue - } - } - // Prove the user's request from the account or storage trie - if err := trie.Prove(request.Key, nodes); err != nil { - p.Log().Warn("Failed to prove state request", "block", header.Number, "hash", header.Hash(), "err", err) - continue - } - if nodes.DataSize() >= softResponseLimit { - break - } - } - return p.replyProofsV2(r.ReqID, nodes.List()) - }, r.ReqID, uint64(len(r.Reqs)), nil -} - -// handleGetHelperTrieProofs handles a helper trie proof request -func handleGetHelperTrieProofs(msg Decoder) (serveRequestFn, uint64, uint64, error) { - var r GetHelperTrieProofsPacket - if err := msg.Decode(&r); err != nil { - return nil, 0, 0, err - } - return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply { - var ( - lastIdx uint64 - lastType uint - auxTrie *trie.Trie - auxBytes int - auxData [][]byte - ) - bc := backend.BlockChain() - nodes := trienode.NewProofSet() - for i, request := range r.Reqs { - if i != 0 && !waitOrStop() { - return nil - } - if auxTrie == nil || request.Type != lastType || request.TrieIdx != lastIdx { - lastType, lastIdx = request.Type, request.TrieIdx - auxTrie = backend.GetHelperTrie(request.Type, request.TrieIdx) - } - if auxTrie == nil { - return nil - } - // TODO(rjl493456442) short circuit if the proving is failed. - // The original client side code has a dirty hack to retrieve - // the headers with no valid proof. Keep the compatibility for - // legacy les protocol and drop this hack when the les2/3 are - // not supported. - err := auxTrie.Prove(request.Key, nodes) - if p.version >= lpv4 && err != nil { - return nil - } - if request.Type == htCanonical && request.AuxReq == htAuxHeader && len(request.Key) == 8 { - header := bc.GetHeaderByNumber(binary.BigEndian.Uint64(request.Key)) - data, err := rlp.EncodeToBytes(header) - if err != nil { - log.Error("Failed to encode header", "err", err) - return nil - } - auxData = append(auxData, data) - auxBytes += len(data) - } - if nodes.DataSize()+auxBytes >= softResponseLimit { - break - } - } - return p.replyHelperTrieProofs(r.ReqID, HelperTrieResps{Proofs: nodes.List(), AuxData: auxData}) - }, r.ReqID, uint64(len(r.Reqs)), nil -} - -// handleSendTx handles a transaction propagation request -func handleSendTx(msg Decoder) (serveRequestFn, uint64, uint64, error) { - var r SendTxPacket - if err := msg.Decode(&r); err != nil { - return nil, 0, 0, err - } - amount := uint64(len(r.Txs)) - return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply { - stats := make([]light.TxStatus, len(r.Txs)) - for i, tx := range r.Txs { - if i != 0 && !waitOrStop() { - return nil - } - hash := tx.Hash() - stats[i] = txStatus(backend, hash) - if stats[i].Status == txpool.TxStatusUnknown { - if errs := backend.TxPool().Add([]*types.Transaction{tx}, false, backend.AddTxsSync()); errs[0] != nil { - stats[i].Error = errs[0].Error() - continue - } - stats[i] = txStatus(backend, hash) - } - } - return p.replyTxStatus(r.ReqID, stats) - }, r.ReqID, amount, nil -} - -// handleGetTxStatus handles a transaction status query -func handleGetTxStatus(msg Decoder) (serveRequestFn, uint64, uint64, error) { - var r GetTxStatusPacket - if err := msg.Decode(&r); err != nil { - return nil, 0, 0, err - } - return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply { - stats := make([]light.TxStatus, len(r.Hashes)) - for i, hash := range r.Hashes { - if i != 0 && !waitOrStop() { - return nil - } - stats[i] = txStatus(backend, hash) - } - return p.replyTxStatus(r.ReqID, stats) - }, r.ReqID, uint64(len(r.Hashes)), nil -} - -// txStatus returns the status of a specified transaction. -func txStatus(b serverBackend, hash common.Hash) light.TxStatus { - var stat light.TxStatus - // Looking the transaction in txpool first. - stat.Status = b.TxPool().Status(hash) - - // If the transaction is unknown to the pool, try looking it up locally. - if stat.Status == txpool.TxStatusUnknown { - lookup := b.BlockChain().GetTransactionLookup(hash) - if lookup != nil { - stat.Status = txpool.TxStatusIncluded - stat.Lookup = lookup - } - } - return stat -} diff --git a/les/servingqueue.go b/les/servingqueue.go deleted file mode 100644 index b258fc3caf..0000000000 --- a/les/servingqueue.go +++ /dev/null @@ -1,365 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "sync" - "sync/atomic" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/common/prque" - "golang.org/x/exp/slices" -) - -// servingQueue allows running tasks in a limited number of threads and puts the -// waiting tasks in a priority queue -type servingQueue struct { - recentTime, queuedTime uint64 - servingTimeDiff atomic.Uint64 - burstLimit, burstDropLimit uint64 - burstDecRate float64 - lastUpdate mclock.AbsTime - - queueAddCh, queueBestCh chan *servingTask - stopThreadCh, quit chan struct{} - setThreadsCh chan int - - wg sync.WaitGroup - threadCount int // number of currently running threads - queue *prque.Prque[int64, *servingTask] // priority queue for waiting or suspended tasks - best *servingTask // the highest priority task (not included in the queue) - suspendBias int64 // priority bias against suspending an already running task -} - -// servingTask represents a request serving task. Tasks can be implemented to -// run in multiple steps, allowing the serving queue to suspend execution between -// steps if higher priority tasks are entered. The creator of the task should -// set the following fields: -// -// - priority: greater value means higher priority; values can wrap around the int64 range -// - run: execute a single step; return true if finished -// - after: executed after run finishes or returns an error, receives the total serving time -type servingTask struct { - sq *servingQueue - servingTime, timeAdded, maxTime, expTime uint64 - peer *clientPeer - priority int64 - biasAdded bool - token runToken - tokenCh chan runToken -} - -// runToken received by servingTask.start allows the task to run. Closing the -// channel by servingTask.stop signals the thread controller to allow a new task -// to start running. -type runToken chan struct{} - -// start blocks until the task can start and returns true if it is allowed to run. -// Returning false means that the task should be cancelled. -func (t *servingTask) start() bool { - if t.peer.isFrozen() { - return false - } - t.tokenCh = make(chan runToken, 1) - select { - case t.sq.queueAddCh <- t: - case <-t.sq.quit: - return false - } - select { - case t.token = <-t.tokenCh: - case <-t.sq.quit: - return false - } - if t.token == nil { - return false - } - t.servingTime -= uint64(mclock.Now()) - return true -} - -// done signals the thread controller about the task being finished and returns -// the total serving time of the task in nanoseconds. -func (t *servingTask) done() uint64 { - t.servingTime += uint64(mclock.Now()) - close(t.token) - diff := t.servingTime - t.timeAdded - t.timeAdded = t.servingTime - if t.expTime > diff { - t.expTime -= diff - t.sq.servingTimeDiff.Add(t.expTime) - } else { - t.expTime = 0 - } - return t.servingTime -} - -// waitOrStop can be called during the execution of the task. It blocks if there -// is a higher priority task waiting (a bias is applied in favor of the currently -// running task). Returning true means that the execution can be resumed. False -// means the task should be cancelled. -func (t *servingTask) waitOrStop() bool { - t.done() - if !t.biasAdded { - t.priority += t.sq.suspendBias - t.biasAdded = true - } - return t.start() -} - -// newServingQueue returns a new servingQueue -func newServingQueue(suspendBias int64, utilTarget float64) *servingQueue { - sq := &servingQueue{ - queue: prque.New[int64, *servingTask](nil), - suspendBias: suspendBias, - queueAddCh: make(chan *servingTask, 100), - queueBestCh: make(chan *servingTask), - stopThreadCh: make(chan struct{}), - quit: make(chan struct{}), - setThreadsCh: make(chan int, 10), - burstLimit: uint64(utilTarget * bufLimitRatio * 1200000), - burstDropLimit: uint64(utilTarget * bufLimitRatio * 1000000), - burstDecRate: utilTarget, - lastUpdate: mclock.Now(), - } - sq.wg.Add(2) - go sq.queueLoop() - go sq.threadCountLoop() - return sq -} - -// newTask creates a new task with the given priority -func (sq *servingQueue) newTask(peer *clientPeer, maxTime uint64, priority int64) *servingTask { - return &servingTask{ - sq: sq, - peer: peer, - maxTime: maxTime, - expTime: maxTime, - priority: priority, - } -} - -// threadController is started in multiple goroutines and controls the execution -// of tasks. The number of active thread controllers equals the allowed number of -// concurrently running threads. It tries to fetch the highest priority queued -// task first. If there are no queued tasks waiting then it can directly catch -// run tokens from the token channel and allow the corresponding tasks to run -// without entering the priority queue. -func (sq *servingQueue) threadController() { - defer sq.wg.Done() - for { - token := make(runToken) - select { - case best := <-sq.queueBestCh: - best.tokenCh <- token - case <-sq.stopThreadCh: - return - case <-sq.quit: - return - } - select { - case <-sq.stopThreadCh: - return - case <-sq.quit: - return - case <-token: - } - } -} - -// peerTasks lists the tasks received from a given peer when selecting peers to freeze -type peerTasks struct { - peer *clientPeer - list []*servingTask - sumTime uint64 - priority float64 -} - -// freezePeers selects the peers with the worst priority queued tasks and freezes -// them until burstTime goes under burstDropLimit or all peers are frozen -func (sq *servingQueue) freezePeers() { - peerMap := make(map[*clientPeer]*peerTasks) - var peerList []*peerTasks - if sq.best != nil { - sq.queue.Push(sq.best, sq.best.priority) - } - sq.best = nil - for sq.queue.Size() > 0 { - task := sq.queue.PopItem() - tasks := peerMap[task.peer] - if tasks == nil { - bufValue, bufLimit := task.peer.fcClient.BufferStatus() - if bufLimit < 1 { - bufLimit = 1 - } - tasks = &peerTasks{ - peer: task.peer, - priority: float64(bufValue) / float64(bufLimit), // lower value comes first - } - peerMap[task.peer] = tasks - peerList = append(peerList, tasks) - } - tasks.list = append(tasks.list, task) - tasks.sumTime += task.expTime - } - slices.SortFunc(peerList, func(a, b *peerTasks) int { - if a.priority < b.priority { - return -1 - } - if a.priority > b.priority { - return 1 - } - return 0 - }) - drop := true - for _, tasks := range peerList { - if drop { - tasks.peer.freeze() - tasks.peer.fcClient.Freeze() - sq.queuedTime -= tasks.sumTime - sqQueuedGauge.Update(int64(sq.queuedTime)) - clientFreezeMeter.Mark(1) - drop = sq.recentTime+sq.queuedTime > sq.burstDropLimit - for _, task := range tasks.list { - task.tokenCh <- nil - } - } else { - for _, task := range tasks.list { - sq.queue.Push(task, task.priority) - } - } - } - if sq.queue.Size() > 0 { - sq.best = sq.queue.PopItem() - } -} - -// updateRecentTime recalculates the recent serving time value -func (sq *servingQueue) updateRecentTime() { - subTime := sq.servingTimeDiff.Swap(0) - now := mclock.Now() - dt := now - sq.lastUpdate - sq.lastUpdate = now - if dt > 0 { - subTime += uint64(float64(dt) * sq.burstDecRate) - } - if sq.recentTime > subTime { - sq.recentTime -= subTime - } else { - sq.recentTime = 0 - } -} - -// addTask inserts a task into the priority queue -func (sq *servingQueue) addTask(task *servingTask) { - if sq.best == nil { - sq.best = task - } else if task.priority-sq.best.priority > 0 { - sq.queue.Push(sq.best, sq.best.priority) - sq.best = task - } else { - sq.queue.Push(task, task.priority) - } - sq.updateRecentTime() - sq.queuedTime += task.expTime - sqServedGauge.Update(int64(sq.recentTime)) - sqQueuedGauge.Update(int64(sq.queuedTime)) - if sq.recentTime+sq.queuedTime > sq.burstLimit { - sq.freezePeers() - } -} - -// queueLoop is an event loop running in a goroutine. It receives tasks from queueAddCh -// and always tries to send the highest priority task to queueBestCh. Successfully sent -// tasks are removed from the queue. -func (sq *servingQueue) queueLoop() { - defer sq.wg.Done() - for { - if sq.best != nil { - expTime := sq.best.expTime - select { - case task := <-sq.queueAddCh: - sq.addTask(task) - case sq.queueBestCh <- sq.best: - sq.updateRecentTime() - sq.queuedTime -= expTime - sq.recentTime += expTime - sqServedGauge.Update(int64(sq.recentTime)) - sqQueuedGauge.Update(int64(sq.queuedTime)) - if sq.queue.Size() == 0 { - sq.best = nil - } else { - sq.best = sq.queue.PopItem() - } - case <-sq.quit: - return - } - } else { - select { - case task := <-sq.queueAddCh: - sq.addTask(task) - case <-sq.quit: - return - } - } - } -} - -// threadCountLoop is an event loop running in a goroutine. It adjusts the number -// of active thread controller goroutines. -func (sq *servingQueue) threadCountLoop() { - var threadCountTarget int - defer sq.wg.Done() - for { - for threadCountTarget > sq.threadCount { - sq.wg.Add(1) - go sq.threadController() - sq.threadCount++ - } - if threadCountTarget < sq.threadCount { - select { - case threadCountTarget = <-sq.setThreadsCh: - case sq.stopThreadCh <- struct{}{}: - sq.threadCount-- - case <-sq.quit: - return - } - } else { - select { - case threadCountTarget = <-sq.setThreadsCh: - case <-sq.quit: - return - } - } - } -} - -// setThreads sets the allowed processing thread count, suspending tasks as soon as -// possible if necessary. -func (sq *servingQueue) setThreads(threadCount int) { - select { - case sq.setThreadsCh <- threadCount: - case <-sq.quit: - return - } -} - -// stop stops task processing as soon as possible and shuts down the serving queue. -func (sq *servingQueue) stop() { - close(sq.quit) - sq.wg.Wait() -} diff --git a/les/state_accessor.go b/les/state_accessor.go deleted file mode 100644 index 9a8214ac2f..0000000000 --- a/les/state_accessor.go +++ /dev/null @@ -1,80 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "context" - "errors" - "fmt" - - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/state" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/core/vm" - "github.com/ethereum/go-ethereum/eth/tracers" - "github.com/ethereum/go-ethereum/light" -) - -// noopReleaser is returned in case there is no operation expected -// for releasing state. -var noopReleaser = tracers.StateReleaseFunc(func() {}) - -// stateAtBlock retrieves the state database associated with a certain block. -func (leth *LightEthereum) stateAtBlock(ctx context.Context, block *types.Block, reexec uint64) (*state.StateDB, tracers.StateReleaseFunc, error) { - return light.NewState(ctx, block.Header(), leth.odr), noopReleaser, nil -} - -// stateAtTransaction returns the execution environment of a certain transaction. -func (leth *LightEthereum) stateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (*core.Message, vm.BlockContext, *state.StateDB, tracers.StateReleaseFunc, error) { - // Short circuit if it's genesis block. - if block.NumberU64() == 0 { - return nil, vm.BlockContext{}, nil, nil, errors.New("no transaction in genesis") - } - // Create the parent state database - parent, err := leth.blockchain.GetBlock(ctx, block.ParentHash(), block.NumberU64()-1) - if err != nil { - return nil, vm.BlockContext{}, nil, nil, err - } - statedb, release, err := leth.stateAtBlock(ctx, parent, reexec) - if err != nil { - return nil, vm.BlockContext{}, nil, nil, err - } - if txIndex == 0 && len(block.Transactions()) == 0 { - return nil, vm.BlockContext{}, statedb, release, nil - } - // Recompute transactions up to the target index. - signer := types.MakeSigner(leth.blockchain.Config(), block.Number(), block.Time()) - for idx, tx := range block.Transactions() { - // Assemble the transaction call message and return if the requested offset - msg, _ := core.TransactionToMessage(tx, signer, block.BaseFee()) - txContext := core.NewEVMTxContext(msg) - context := core.NewEVMBlockContext(block.Header(), leth.blockchain, nil) - statedb.SetTxContext(tx.Hash(), idx) - if idx == txIndex { - return msg, context, statedb, release, nil - } - // Not yet the searched for transaction, execute on top of the current state - vmenv := vm.NewEVM(context, txContext, statedb, leth.blockchain.Config(), vm.Config{}) - if _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas())); err != nil { - return nil, vm.BlockContext{}, nil, nil, fmt.Errorf("transaction %#x failed: %v", tx.Hash(), err) - } - // Ensure any modifications are committed to the state - // Only delete empty objects if EIP158/161 (a.k.a Spurious Dragon) is in effect - statedb.Finalise(vmenv.ChainConfig().IsEIP158(block.Number())) - } - return nil, vm.BlockContext{}, nil, nil, fmt.Errorf("transaction index %d out of range for block %#x", txIndex, block.Hash()) -} diff --git a/les/test_helper.go b/les/test_helper.go deleted file mode 100644 index 6be13eaecd..0000000000 --- a/les/test_helper.go +++ /dev/null @@ -1,626 +0,0 @@ -// Copyright 2019 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// This file contains some shares testing functionality, common to multiple -// different files and modules being tested. Client based network and Server -// based network can be created easily with available APIs. - -package les - -import ( - "context" - "crypto/rand" - "fmt" - "math/big" - "testing" - "time" - - "github.com/ethereum/go-ethereum/accounts/abi/bind/backends" - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/consensus" - "github.com/ethereum/go-ethereum/consensus/ethash" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/forkid" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/txpool" - "github.com/ethereum/go-ethereum/core/txpool/legacypool" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/eth/ethconfig" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/event" - "github.com/ethereum/go-ethereum/les/flowcontrol" - vfs "github.com/ethereum/go-ethereum/les/vflux/server" - "github.com/ethereum/go-ethereum/light" - "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/trie" -) - -var ( - bankKey, _ = crypto.GenerateKey() - bankAddr = crypto.PubkeyToAddress(bankKey.PublicKey) - bankFunds = big.NewInt(1_000_000_000_000_000_000) - - userKey1, _ = crypto.GenerateKey() - userKey2, _ = crypto.GenerateKey() - userAddr1 = crypto.PubkeyToAddress(userKey1.PublicKey) - userAddr2 = crypto.PubkeyToAddress(userKey2.PublicKey) - - testContractAddr common.Address - testContractCode = common.Hex2Bytes("606060405260cc8060106000396000f360606040526000357c01000000000000000000000000000000000000000000000000000000009004806360cd2685146041578063c16431b914606b57603f565b005b6055600480803590602001909190505060a9565b6040518082815260200191505060405180910390f35b60886004808035906020019091908035906020019091905050608a565b005b80600060005083606481101560025790900160005b50819055505b5050565b6000600060005082606481101560025790900160005b5054905060c7565b91905056") - testContractCodeDeployed = testContractCode[16:] - testContractDeployed = uint64(2) - - testEventEmitterCode = common.Hex2Bytes("60606040523415600e57600080fd5b7f57050ab73f6b9ebdd9f76b8d4997793f48cf956e965ee070551b9ca0bb71584e60405160405180910390a160358060476000396000f3006060604052600080fd00a165627a7a723058203f727efcad8b5811f8cb1fc2620ce5e8c63570d697aef968172de296ea3994140029") - - // Checkpoint oracle relative fields - signerKey, _ = crypto.GenerateKey() - signerAddr = crypto.PubkeyToAddress(signerKey.PublicKey) -) - -var ( - // The token bucket buffer limit for testing purpose. - testBufLimit = uint64(1000000) - - // The buffer recharging speed for testing purpose. - testBufRecharge = uint64(1000) -) - -/* -contract test { - - uint256[100] data; - - function Put(uint256 addr, uint256 value) { - data[addr] = value; - } - - function Get(uint256 addr) constant returns (uint256 value) { - return data[addr]; - } -} -*/ - -// prepare pre-commits specified number customized blocks into chain. -func prepare(n int, backend *backends.SimulatedBackend) { - var ( - ctx = context.Background() - signer = types.HomesteadSigner{} - ) - for i := 0; i < n; i++ { - switch i { - case 0: - // Builtin-block - // number: 1 - // txs: 1 - - // bankUser transfers some ether to user1 - nonce, _ := backend.PendingNonceAt(ctx, bankAddr) - tx, _ := types.SignTx(types.NewTransaction(nonce, userAddr1, big.NewInt(10_000_000_000_000_000), params.TxGas, big.NewInt(params.InitialBaseFee), nil), signer, bankKey) - backend.SendTransaction(ctx, tx) - case 1: - // Builtin-block - // number: 2 - // txs: 4 - - bankNonce, _ := backend.PendingNonceAt(ctx, bankAddr) - userNonce1, _ := backend.PendingNonceAt(ctx, userAddr1) - - // bankUser transfers more ether to user1 - tx1, _ := types.SignTx(types.NewTransaction(bankNonce, userAddr1, big.NewInt(1_000_000_000_000_000), params.TxGas, big.NewInt(params.InitialBaseFee), nil), signer, bankKey) - backend.SendTransaction(ctx, tx1) - - // user1 relays ether to user2 - tx2, _ := types.SignTx(types.NewTransaction(userNonce1, userAddr2, big.NewInt(1_000_000_000_000_000), params.TxGas, big.NewInt(params.InitialBaseFee), nil), signer, userKey1) - backend.SendTransaction(ctx, tx2) - - // user1 deploys a test contract - tx3, _ := types.SignTx(types.NewContractCreation(userNonce1+1, big.NewInt(0), 200000, big.NewInt(params.InitialBaseFee), testContractCode), signer, userKey1) - backend.SendTransaction(ctx, tx3) - testContractAddr = crypto.CreateAddress(userAddr1, userNonce1+1) - - // user1 deploys a event contract - tx4, _ := types.SignTx(types.NewContractCreation(userNonce1+2, big.NewInt(0), 200000, big.NewInt(params.InitialBaseFee), testEventEmitterCode), signer, userKey1) - backend.SendTransaction(ctx, tx4) - case 2: - // Builtin-block - // number: 3 - // txs: 2 - - // bankUser transfer some ether to signer - bankNonce, _ := backend.PendingNonceAt(ctx, bankAddr) - tx1, _ := types.SignTx(types.NewTransaction(bankNonce, signerAddr, big.NewInt(1000000000), params.TxGas, big.NewInt(params.InitialBaseFee), nil), signer, bankKey) - backend.SendTransaction(ctx, tx1) - - // invoke test contract - data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001") - tx2, _ := types.SignTx(types.NewTransaction(bankNonce+1, testContractAddr, big.NewInt(0), 100000, big.NewInt(params.InitialBaseFee), data), signer, bankKey) - backend.SendTransaction(ctx, tx2) - case 3: - // Builtin-block - // number: 4 - // txs: 1 - - // invoke test contract - bankNonce, _ := backend.PendingNonceAt(ctx, bankAddr) - data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002") - tx, _ := types.SignTx(types.NewTransaction(bankNonce, testContractAddr, big.NewInt(0), 100000, big.NewInt(params.InitialBaseFee), data), signer, bankKey) - backend.SendTransaction(ctx, tx) - } - backend.Commit() - } -} - -// testIndexers creates a set of indexers with specified params for testing purpose. -func testIndexers(db ethdb.Database, odr light.OdrBackend, config *light.IndexerConfig, disablePruning bool) []*core.ChainIndexer { - var indexers [3]*core.ChainIndexer - indexers[0] = light.NewChtIndexer(db, odr, config.ChtSize, config.ChtConfirms, disablePruning) - indexers[1] = core.NewBloomIndexer(db, config.BloomSize, config.BloomConfirms) - indexers[2] = light.NewBloomTrieIndexer(db, odr, config.BloomSize, config.BloomTrieSize, disablePruning) - // make bloomTrieIndexer as a child indexer of bloom indexer. - indexers[1].AddChildIndexer(indexers[2]) - return indexers[:] -} - -func newTestClientHandler(backend *backends.SimulatedBackend, odr *LesOdr, indexers []*core.ChainIndexer, db ethdb.Database, peers *serverPeerSet) (*clientHandler, func()) { - var ( - evmux = new(event.TypeMux) - engine = ethash.NewFaker() - gspec = core.Genesis{ - Config: params.AllEthashProtocolChanges, - Alloc: core.GenesisAlloc{bankAddr: {Balance: bankFunds}}, - GasLimit: 100000000, - BaseFee: big.NewInt(params.InitialBaseFee), - } - ) - genesis := gspec.MustCommit(db, trie.NewDatabase(db, trie.HashDefaults)) - chain, _ := light.NewLightChain(odr, gspec.Config, engine) - - client := &LightEthereum{ - lesCommons: lesCommons{ - genesis: genesis.Hash(), - config: ðconfig.Config{LightPeers: 100, NetworkId: NetworkId}, - chainConfig: params.AllEthashProtocolChanges, - iConfig: light.TestClientIndexerConfig, - chainDb: db, - chainReader: chain, - closeCh: make(chan struct{}), - }, - peers: peers, - reqDist: odr.retriever.dist, - retriever: odr.retriever, - odr: odr, - engine: engine, - blockchain: chain, - eventMux: evmux, - merger: consensus.NewMerger(rawdb.NewMemoryDatabase()), - } - client.handler = newClientHandler(client) - - return client.handler, func() { - client.handler.stop() - } -} - -func newTestServerHandler(blocks int, indexers []*core.ChainIndexer, db ethdb.Database, clock mclock.Clock) (*serverHandler, *backends.SimulatedBackend, func()) { - var ( - gspec = core.Genesis{ - Config: params.AllEthashProtocolChanges, - Alloc: core.GenesisAlloc{bankAddr: {Balance: bankFunds}}, - GasLimit: 100000000, - BaseFee: big.NewInt(params.InitialBaseFee), - } - ) - genesis := gspec.MustCommit(db, trie.NewDatabase(db, trie.HashDefaults)) - - // create a simulation backend and pre-commit several customized block to the database. - simulation := backends.NewSimulatedBackendWithDatabase(db, gspec.Alloc, 100000000) - prepare(blocks, simulation) - - txpoolConfig := legacypool.DefaultConfig - txpoolConfig.Journal = "" - - pool := legacypool.New(txpoolConfig, simulation.Blockchain()) - txpool, _ := txpool.New(new(big.Int).SetUint64(txpoolConfig.PriceLimit), simulation.Blockchain(), []txpool.SubPool{pool}) - - server := &LesServer{ - lesCommons: lesCommons{ - genesis: genesis.Hash(), - config: ðconfig.Config{LightPeers: 100, NetworkId: NetworkId}, - chainConfig: params.AllEthashProtocolChanges, - iConfig: light.TestServerIndexerConfig, - chainDb: db, - chainReader: simulation.Blockchain(), - closeCh: make(chan struct{}), - }, - peers: newClientPeerSet(), - servingQueue: newServingQueue(int64(time.Millisecond*10), 1), - defParams: flowcontrol.ServerParams{ - BufLimit: testBufLimit, - MinRecharge: testBufRecharge, - }, - fcManager: flowcontrol.NewClientManager(nil, clock), - } - server.costTracker, server.minCapacity = newCostTracker(db, server.config) - server.costTracker.testCostList = testCostList(0) // Disable flow control mechanism. - server.clientPool = vfs.NewClientPool(db, testBufRecharge, defaultConnectedBias, clock, alwaysTrueFn) - server.clientPool.Start() - server.clientPool.SetLimits(10000, 10000) // Assign enough capacity for clientpool - server.handler = newServerHandler(server, simulation.Blockchain(), db, txpool, func() bool { return true }) - server.servingQueue.setThreads(4) - server.handler.start() - closer := func() { server.Stop() } - return server.handler, simulation, closer -} - -func alwaysTrueFn() bool { - return true -} - -// testPeer is a simulated peer to allow testing direct network calls. -type testPeer struct { - cpeer *clientPeer - speer *serverPeer - - net p2p.MsgReadWriter // Network layer reader/writer to simulate remote messaging - app *p2p.MsgPipeRW // Application layer reader/writer to simulate the local side -} - -// handshakeWithServer executes the handshake with the remote server peer. -func (p *testPeer) handshakeWithServer(t *testing.T, td *big.Int, head common.Hash, headNum uint64, genesis common.Hash, forkID forkid.ID) { - // It only works for the simulated client peer - if p.cpeer == nil { - t.Fatal("handshake for client peer only") - } - var sendList keyValueList - sendList = sendList.add("protocolVersion", uint64(p.cpeer.version)) - sendList = sendList.add("networkId", uint64(NetworkId)) - sendList = sendList.add("headTd", td) - sendList = sendList.add("headHash", head) - sendList = sendList.add("headNum", headNum) - sendList = sendList.add("genesisHash", genesis) - if p.cpeer.version >= lpv4 { - sendList = sendList.add("forkID", &forkID) - } - if err := p2p.ExpectMsg(p.app, StatusMsg, nil); err != nil { - t.Fatalf("status recv: %v", err) - } - if err := p2p.Send(p.app, StatusMsg, &sendList); err != nil { - t.Fatalf("status send: %v", err) - } -} - -// handshakeWithClient executes the handshake with the remote client peer. -// (used by temporarily disabled tests) -/*func (p *testPeer) handshakeWithClient(t *testing.T, td *big.Int, head common.Hash, headNum uint64, genesis common.Hash, forkID forkid.ID, costList RequestCostList, recentTxLookup uint64) { - // It only works for the simulated client peer - if p.speer == nil { - t.Fatal("handshake for server peer only") - } - var sendList keyValueList - sendList = sendList.add("protocolVersion", uint64(p.speer.version)) - sendList = sendList.add("networkId", uint64(NetworkId)) - sendList = sendList.add("headTd", td) - sendList = sendList.add("headHash", head) - sendList = sendList.add("headNum", headNum) - sendList = sendList.add("genesisHash", genesis) - sendList = sendList.add("serveHeaders", nil) - sendList = sendList.add("serveChainSince", uint64(0)) - sendList = sendList.add("serveStateSince", uint64(0)) - sendList = sendList.add("serveRecentState", uint64(core.TriesInMemory-4)) - sendList = sendList.add("txRelay", nil) - sendList = sendList.add("flowControl/BL", testBufLimit) - sendList = sendList.add("flowControl/MRR", testBufRecharge) - sendList = sendList.add("flowControl/MRC", costList) - if p.speer.version >= lpv4 { - sendList = sendList.add("forkID", &forkID) - sendList = sendList.add("recentTxLookup", recentTxLookup) - } - if err := p2p.ExpectMsg(p.app, StatusMsg, nil); err != nil { - t.Fatalf("status recv: %v", err) - } - if err := p2p.Send(p.app, StatusMsg, &sendList); err != nil { - t.Fatalf("status send: %v", err) - } -}*/ - -// close terminates the local side of the peer, notifying the remote protocol -// manager of termination. -func (p *testPeer) close() { - p.app.Close() -} - -func newTestPeerPair(name string, version int, server *serverHandler, client *clientHandler, noInitAnnounce bool) (*testPeer, *testPeer, error) { - // Create a message pipe to communicate through - app, net := p2p.MsgPipe() - - // Generate a random id and create the peer - var id enode.ID - rand.Read(id[:]) - - peer1 := newClientPeer(version, NetworkId, p2p.NewPeer(id, name, nil), net) - peer2 := newServerPeer(version, NetworkId, false, p2p.NewPeer(id, name, nil), app) - - // Start the peer on a new thread - errc1 := make(chan error, 1) - errc2 := make(chan error, 1) - go func() { - select { - case <-server.closeCh: - errc1 <- p2p.DiscQuitting - case errc1 <- server.handle(peer1): - } - }() - go func() { - select { - case <-client.closeCh: - errc2 <- p2p.DiscQuitting - case errc2 <- client.handle(peer2, noInitAnnounce): - } - }() - // Ensure the connection is established or exits when any error occurs - for { - select { - case err := <-errc1: - return nil, nil, fmt.Errorf("failed to establish protocol connection %v", err) - case err := <-errc2: - return nil, nil, fmt.Errorf("failed to establish protocol connection %v", err) - default: - } - if peer1.serving.Load() && peer2.serving.Load() { - break - } - time.Sleep(50 * time.Millisecond) - } - return &testPeer{cpeer: peer1, net: net, app: app}, &testPeer{speer: peer2, net: app, app: net}, nil -} - -type indexerCallback func(*core.ChainIndexer, *core.ChainIndexer, *core.ChainIndexer) - -// testClient represents a client object for testing with necessary auxiliary fields. -type testClient struct { - clock mclock.Clock - db ethdb.Database - peer *testPeer - handler *clientHandler - - chtIndexer *core.ChainIndexer - bloomIndexer *core.ChainIndexer - bloomTrieIndexer *core.ChainIndexer -} - -// newRawPeer creates a new server peer connects to the server and do the handshake. -// (used by temporarily disabled tests) -/*func (client *testClient) newRawPeer(t *testing.T, name string, version int, recentTxLookup uint64) (*testPeer, func(), <-chan error) { - // Create a message pipe to communicate through - app, net := p2p.MsgPipe() - - // Generate a random id and create the peer - var id enode.ID - rand.Read(id[:]) - peer := newServerPeer(version, NetworkId, false, p2p.NewPeer(id, name, nil), net) - - // Start the peer on a new thread - errCh := make(chan error, 1) - go func() { - select { - case <-client.handler.closeCh: - errCh <- p2p.DiscQuitting - case errCh <- client.handler.handle(peer, false): - } - }() - tp := &testPeer{ - app: app, - net: net, - speer: peer, - } - var ( - genesis = client.handler.backend.blockchain.Genesis() - head = client.handler.backend.blockchain.CurrentHeader() - td = client.handler.backend.blockchain.GetTd(head.Hash(), head.Number.Uint64()) - ) - forkID := forkid.NewID(client.handler.backend.blockchain.Config(), genesis.Hash(), head.Number.Uint64(), head.Time) - tp.handshakeWithClient(t, td, head.Hash(), head.Number.Uint64(), genesis.Hash(), forkID, testCostList(0), recentTxLookup) // disable flow control by default - - // Ensure the connection is established or exits when any error occurs - for { - select { - case <-errCh: - return nil, nil, nil - default: - } - if peer.serving.Load() { - break - } - time.Sleep(50 * time.Millisecond) - } - closePeer := func() { - tp.speer.close() - tp.close() - } - return tp, closePeer, errCh -}*/ - -// testServer represents a server object for testing with necessary auxiliary fields. -type testServer struct { - clock mclock.Clock - backend *backends.SimulatedBackend - db ethdb.Database - peer *testPeer - handler *serverHandler - - chtIndexer *core.ChainIndexer - bloomIndexer *core.ChainIndexer - bloomTrieIndexer *core.ChainIndexer -} - -// newRawPeer creates a new client peer connects to the server and do the handshake. -func (server *testServer) newRawPeer(t *testing.T, name string, version int) (*testPeer, func(), <-chan error) { - // Create a message pipe to communicate through - app, net := p2p.MsgPipe() - - // Generate a random id and create the peer - var id enode.ID - rand.Read(id[:]) - peer := newClientPeer(version, NetworkId, p2p.NewPeer(id, name, nil), net) - - // Start the peer on a new thread - errCh := make(chan error, 1) - go func() { - select { - case <-server.handler.closeCh: - errCh <- p2p.DiscQuitting - case errCh <- server.handler.handle(peer): - } - }() - tp := &testPeer{ - app: app, - net: net, - cpeer: peer, - } - var ( - genesis = server.handler.blockchain.Genesis() - head = server.handler.blockchain.CurrentHeader() - td = server.handler.blockchain.GetTd(head.Hash(), head.Number.Uint64()) - ) - forkID := forkid.NewID(server.handler.blockchain.Config(), genesis, head.Number.Uint64(), head.Time) - tp.handshakeWithServer(t, td, head.Hash(), head.Number.Uint64(), genesis.Hash(), forkID) - - // Ensure the connection is established or exits when any error occurs - for { - select { - case <-errCh: - return nil, nil, nil - default: - } - if peer.serving.Load() { - break - } - time.Sleep(50 * time.Millisecond) - } - closePeer := func() { - tp.cpeer.close() - tp.close() - } - return tp, closePeer, errCh -} - -// testnetConfig wraps all the configurations for testing network. -type testnetConfig struct { - blocks int - protocol int - indexFn indexerCallback - simClock bool - connect bool - nopruning bool -} - -func newClientServerEnv(t *testing.T, config testnetConfig) (*testServer, *testClient, func()) { - var ( - sdb = rawdb.NewMemoryDatabase() - cdb = rawdb.NewMemoryDatabase() - speers = newServerPeerSet() - ) - var clock mclock.Clock = &mclock.System{} - if config.simClock { - clock = &mclock.Simulated{} - } - dist := newRequestDistributor(speers, clock) - rm := newRetrieveManager(speers, dist, func() time.Duration { return time.Millisecond * 500 }) - odr := NewLesOdr(cdb, light.TestClientIndexerConfig, speers, rm) - - sindexers := testIndexers(sdb, nil, light.TestServerIndexerConfig, true) - cIndexers := testIndexers(cdb, odr, light.TestClientIndexerConfig, config.nopruning) - - scIndexer, sbIndexer, sbtIndexer := sindexers[0], sindexers[1], sindexers[2] - ccIndexer, cbIndexer, cbtIndexer := cIndexers[0], cIndexers[1], cIndexers[2] - odr.SetIndexers(ccIndexer, cbIndexer, cbtIndexer) - - server, b, serverClose := newTestServerHandler(config.blocks, sindexers, sdb, clock) - client, clientClose := newTestClientHandler(b, odr, cIndexers, cdb, speers) - - scIndexer.Start(server.blockchain) - sbIndexer.Start(server.blockchain) - ccIndexer.Start(client.backend.blockchain) - cbIndexer.Start(client.backend.blockchain) - - if config.indexFn != nil { - config.indexFn(scIndexer, sbIndexer, sbtIndexer) - } - var ( - err error - speer, cpeer *testPeer - ) - if config.connect { - done := make(chan struct{}) - cpeer, speer, err = newTestPeerPair("peer", config.protocol, server, client, false) - if err != nil { - t.Fatalf("Failed to connect testing peers %v", err) - } - select { - case <-done: - case <-time.After(10 * time.Second): - t.Fatal("test peer did not connect and sync within 3s") - } - } - s := &testServer{ - clock: clock, - backend: b, - db: sdb, - peer: cpeer, - handler: server, - chtIndexer: scIndexer, - bloomIndexer: sbIndexer, - bloomTrieIndexer: sbtIndexer, - } - c := &testClient{ - clock: clock, - db: cdb, - peer: speer, - handler: client, - chtIndexer: ccIndexer, - bloomIndexer: cbIndexer, - bloomTrieIndexer: cbtIndexer, - } - teardown := func() { - if config.connect { - speer.close() - cpeer.close() - cpeer.cpeer.close() - speer.speer.close() - } - ccIndexer.Close() - cbIndexer.Close() - scIndexer.Close() - sbIndexer.Close() - dist.close() - serverClose() - b.Close() - clientClose() - } - return s, c, teardown -} - -// NewFuzzerPeer creates a client peer for test purposes, and also returns -// a function to close the peer: this is needed to avoid goroutine leaks in the -// exec queue. -func NewFuzzerPeer(version int) (p *clientPeer, closer func()) { - p = newClientPeer(version, 0, p2p.NewPeer(enode.ID{}, "", nil), nil) - return p, func() { p.peerCommons.close() } -} diff --git a/les/txrelay.go b/les/txrelay.go deleted file mode 100644 index 40a51fb76f..0000000000 --- a/les/txrelay.go +++ /dev/null @@ -1,179 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "context" - "math/rand" - "sync" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/rlp" -) - -type lesTxRelay struct { - txSent map[common.Hash]*types.Transaction - txPending map[common.Hash]struct{} - peerList []*serverPeer - peerStartPos int - lock sync.Mutex - stop chan struct{} - - retriever *retrieveManager -} - -func newLesTxRelay(ps *serverPeerSet, retriever *retrieveManager) *lesTxRelay { - r := &lesTxRelay{ - txSent: make(map[common.Hash]*types.Transaction), - txPending: make(map[common.Hash]struct{}), - retriever: retriever, - stop: make(chan struct{}), - } - ps.subscribe(r) - return r -} - -func (ltrx *lesTxRelay) Stop() { - close(ltrx.stop) -} - -func (ltrx *lesTxRelay) registerPeer(p *serverPeer) { - ltrx.lock.Lock() - defer ltrx.lock.Unlock() - - // Short circuit if the peer is announce only. - if p.onlyAnnounce { - return - } - ltrx.peerList = append(ltrx.peerList, p) -} - -func (ltrx *lesTxRelay) unregisterPeer(p *serverPeer) { - ltrx.lock.Lock() - defer ltrx.lock.Unlock() - - for i, peer := range ltrx.peerList { - if peer == p { - // Remove from the peer list - ltrx.peerList = append(ltrx.peerList[:i], ltrx.peerList[i+1:]...) - return - } - } -} - -// send sends a list of transactions to at most a given number of peers. -func (ltrx *lesTxRelay) send(txs types.Transactions, count int) { - sendTo := make(map[*serverPeer]types.Transactions) - - ltrx.peerStartPos++ // rotate the starting position of the peer list - if ltrx.peerStartPos >= len(ltrx.peerList) { - ltrx.peerStartPos = 0 - } - - for _, tx := range txs { - hash := tx.Hash() - _, ok := ltrx.txSent[hash] - if !ok { - ltrx.txSent[hash] = tx - ltrx.txPending[hash] = struct{}{} - } - if len(ltrx.peerList) > 0 { - cnt := count - pos := ltrx.peerStartPos - for { - peer := ltrx.peerList[pos] - sendTo[peer] = append(sendTo[peer], tx) - cnt-- - if cnt == 0 { - break // sent it to the desired number of peers - } - pos++ - if pos == len(ltrx.peerList) { - pos = 0 - } - if pos == ltrx.peerStartPos { - break // tried all available peers - } - } - } - } - - for p, list := range sendTo { - pp := p - ll := list - enc, _ := rlp.EncodeToBytes(ll) - - reqID := rand.Uint64() - rq := &distReq{ - getCost: func(dp distPeer) uint64 { - peer := dp.(*serverPeer) - return peer.getTxRelayCost(len(ll), len(enc)) - }, - canSend: func(dp distPeer) bool { - return !dp.(*serverPeer).onlyAnnounce && dp.(*serverPeer) == pp - }, - request: func(dp distPeer) func() { - peer := dp.(*serverPeer) - cost := peer.getTxRelayCost(len(ll), len(enc)) - peer.fcServer.QueuedRequest(reqID, cost) - return func() { peer.sendTxs(reqID, len(ll), enc) } - }, - } - go ltrx.retriever.retrieve(context.Background(), reqID, rq, func(p distPeer, msg *Msg) error { return nil }, ltrx.stop) - } -} - -func (ltrx *lesTxRelay) Send(txs types.Transactions) { - ltrx.lock.Lock() - defer ltrx.lock.Unlock() - - ltrx.send(txs, 3) -} - -func (ltrx *lesTxRelay) NewHead(head common.Hash, mined []common.Hash, rollback []common.Hash) { - ltrx.lock.Lock() - defer ltrx.lock.Unlock() - - for _, hash := range mined { - delete(ltrx.txPending, hash) - } - - for _, hash := range rollback { - ltrx.txPending[hash] = struct{}{} - } - - if len(ltrx.txPending) > 0 { - txs := make(types.Transactions, len(ltrx.txPending)) - i := 0 - for hash := range ltrx.txPending { - txs[i] = ltrx.txSent[hash] - i++ - } - ltrx.send(txs, 1) - } -} - -func (ltrx *lesTxRelay) Discard(hashes []common.Hash) { - ltrx.lock.Lock() - defer ltrx.lock.Unlock() - - for _, hash := range hashes { - delete(ltrx.txSent, hash) - delete(ltrx.txPending, hash) - } -} diff --git a/les/utils/exec_queue.go b/les/utils/exec_queue.go deleted file mode 100644 index 5942b06ec0..0000000000 --- a/les/utils/exec_queue.go +++ /dev/null @@ -1,105 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import "sync" - -// ExecQueue implements a queue that executes function calls in a single thread, -// in the same order as they have been queued. -type ExecQueue struct { - mu sync.Mutex - cond *sync.Cond - funcs []func() - closeWait chan struct{} -} - -// NewExecQueue creates a new execution Queue. -func NewExecQueue(capacity int) *ExecQueue { - q := &ExecQueue{funcs: make([]func(), 0, capacity)} - q.cond = sync.NewCond(&q.mu) - go q.loop() - return q -} - -func (q *ExecQueue) loop() { - for f := q.waitNext(false); f != nil; f = q.waitNext(true) { - f() - } - close(q.closeWait) -} - -func (q *ExecQueue) waitNext(drop bool) (f func()) { - q.mu.Lock() - if drop && len(q.funcs) > 0 { - // Remove the function that just executed. We do this here instead of when - // dequeuing so len(q.funcs) includes the function that is running. - q.funcs = append(q.funcs[:0], q.funcs[1:]...) - } - for !q.isClosed() { - if len(q.funcs) > 0 { - f = q.funcs[0] - break - } - q.cond.Wait() - } - q.mu.Unlock() - return f -} - -func (q *ExecQueue) isClosed() bool { - return q.closeWait != nil -} - -// CanQueue returns true if more function calls can be added to the execution Queue. -func (q *ExecQueue) CanQueue() bool { - q.mu.Lock() - ok := !q.isClosed() && len(q.funcs) < cap(q.funcs) - q.mu.Unlock() - return ok -} - -// Queue adds a function call to the execution Queue. Returns true if successful. -func (q *ExecQueue) Queue(f func()) bool { - q.mu.Lock() - ok := !q.isClosed() && len(q.funcs) < cap(q.funcs) - if ok { - q.funcs = append(q.funcs, f) - q.cond.Signal() - } - q.mu.Unlock() - return ok -} - -// Clear drops all queued functions. -func (q *ExecQueue) Clear() { - q.mu.Lock() - q.funcs = q.funcs[:0] - q.mu.Unlock() -} - -// Quit stops the exec Queue. -// -// Quit waits for the current execution to finish before returning. -func (q *ExecQueue) Quit() { - q.mu.Lock() - if !q.isClosed() { - q.closeWait = make(chan struct{}) - q.cond.Signal() - } - q.mu.Unlock() - <-q.closeWait -} diff --git a/les/utils/exec_queue_test.go b/les/utils/exec_queue_test.go deleted file mode 100644 index 98601c4486..0000000000 --- a/les/utils/exec_queue_test.go +++ /dev/null @@ -1,60 +0,0 @@ -// Copyright 2017 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import "testing" - -func TestExecQueue(t *testing.T) { - var ( - N = 10000 - q = NewExecQueue(N) - counter int - execd = make(chan int) - testexit = make(chan struct{}) - ) - defer q.Quit() - defer close(testexit) - - check := func(state string, wantOK bool) { - c := counter - counter++ - qf := func() { - select { - case execd <- c: - case <-testexit: - } - } - if q.CanQueue() != wantOK { - t.Fatalf("CanQueue() == %t for %s", !wantOK, state) - } - if q.Queue(qf) != wantOK { - t.Fatalf("Queue() == %t for %s", !wantOK, state) - } - } - - for i := 0; i < N; i++ { - check("queue below cap", true) - } - check("full queue", false) - for i := 0; i < N; i++ { - if c := <-execd; c != i { - t.Fatal("execution out of order") - } - } - q.Quit() - check("closed queue", false) -} diff --git a/les/utils/expiredvalue.go b/les/utils/expiredvalue.go deleted file mode 100644 index 099b61d053..0000000000 --- a/les/utils/expiredvalue.go +++ /dev/null @@ -1,270 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import ( - "math" - "sync" - - "github.com/ethereum/go-ethereum/common/mclock" -) - -// ExpiredValue is a scalar value that is continuously expired (decreased -// exponentially) based on the provided logarithmic expiration offset value. -// -// The formula for value calculation is: base*2^(exp-logOffset). In order to -// simplify the calculation of ExpiredValue, its value is expressed in the form -// of an exponent with a base of 2. -// -// Also here is a trick to reduce a lot of calculations. In theory, when a value X -// decays over time and then a new value Y is added, the final result should be -// X*2^(exp-logOffset)+Y. However it's very hard to represent in memory. -// So the trick is using the idea of inflation instead of exponential decay. At this -// moment the temporary value becomes: X*2^exp+Y*2^logOffset_1, apply the exponential -// decay when we actually want to calculate the value. -// -// e.g. -// t0: V = 100 -// t1: add 30, inflationary value is: 100 + 30/0.3, 0.3 is the decay coefficient -// t2: get value, decay coefficient is 0.2 now, final result is: 200*0.2 = 40 -type ExpiredValue struct { - Base, Exp uint64 // rlp encoding works by default -} - -// ExpirationFactor is calculated from logOffset. 1 <= Factor < 2 and Factor*2^Exp -// describes the multiplier applicable for additions and the divider for readouts. -// If logOffset changes slowly then it saves some expensive operations to not calculate -// them for each addition and readout but cache this intermediate form for some time. -// It is also useful for structures where multiple values are expired with the same -// Expirer. -type ExpirationFactor struct { - Exp uint64 - Factor float64 -} - -// ExpFactor calculates ExpirationFactor based on logOffset -func ExpFactor(logOffset Fixed64) ExpirationFactor { - return ExpirationFactor{Exp: logOffset.ToUint64(), Factor: logOffset.Fraction().Pow2()} -} - -// Value calculates the expired value based on a floating point base and integer -// power-of-2 exponent. This function should be used by multi-value expired structures. -func (e ExpirationFactor) Value(base float64, exp uint64) float64 { - return base / e.Factor * math.Pow(2, float64(int64(exp-e.Exp))) -} - -// Value calculates the value at the given moment. -func (e ExpiredValue) Value(logOffset Fixed64) uint64 { - offset := Uint64ToFixed64(e.Exp) - logOffset - return uint64(float64(e.Base) * offset.Pow2()) -} - -// Add adds a signed value at the given moment -func (e *ExpiredValue) Add(amount int64, logOffset Fixed64) int64 { - integer, frac := logOffset.ToUint64(), logOffset.Fraction() - factor := frac.Pow2() - base := factor * float64(amount) - if integer < e.Exp { - base /= math.Pow(2, float64(e.Exp-integer)) - } - if integer > e.Exp { - e.Base >>= (integer - e.Exp) - e.Exp = integer - } - if base >= 0 || uint64(-base) <= e.Base { - // The conversion from negative float64 to - // uint64 is undefined in golang, and doesn't - // work with ARMv8. More details at: - // https://github.com/golang/go/issues/43047 - if base >= 0 { - e.Base += uint64(base) - } else { - e.Base -= uint64(-base) - } - return amount - } - net := int64(-float64(e.Base) / factor) - e.Base = 0 - return net -} - -// AddExp adds another ExpiredValue -func (e *ExpiredValue) AddExp(a ExpiredValue) { - if e.Exp > a.Exp { - a.Base >>= (e.Exp - a.Exp) - } - if e.Exp < a.Exp { - e.Base >>= (a.Exp - e.Exp) - e.Exp = a.Exp - } - e.Base += a.Base -} - -// SubExp subtracts another ExpiredValue -func (e *ExpiredValue) SubExp(a ExpiredValue) { - if e.Exp > a.Exp { - a.Base >>= (e.Exp - a.Exp) - } - if e.Exp < a.Exp { - e.Base >>= (a.Exp - e.Exp) - e.Exp = a.Exp - } - if e.Base > a.Base { - e.Base -= a.Base - } else { - e.Base = 0 - } -} - -// IsZero returns true if the value is zero -func (e *ExpiredValue) IsZero() bool { - return e.Base == 0 -} - -// LinearExpiredValue is very similar with the expiredValue which the value -// will continuously expired. But the different part is it's expired linearly. -type LinearExpiredValue struct { - Offset uint64 // The latest time offset - Val uint64 // The remaining value, can never be negative - Rate mclock.AbsTime `rlp:"-"` // Expiration rate(by nanosecond), will ignored by RLP -} - -// Value calculates the value at the given moment. This function always has the -// assumption that the given timestamp shouldn't less than the recorded one. -func (e LinearExpiredValue) Value(now mclock.AbsTime) uint64 { - offset := uint64(now / e.Rate) - if e.Offset < offset { - diff := offset - e.Offset - if e.Val >= diff { - e.Val -= diff - } else { - e.Val = 0 - } - } - return e.Val -} - -// Add adds a signed value at the given moment. This function always has the -// assumption that the given timestamp shouldn't less than the recorded one. -func (e *LinearExpiredValue) Add(amount int64, now mclock.AbsTime) uint64 { - offset := uint64(now / e.Rate) - if e.Offset < offset { - diff := offset - e.Offset - if e.Val >= diff { - e.Val -= diff - } else { - e.Val = 0 - } - e.Offset = offset - } - if amount < 0 && uint64(-amount) > e.Val { - e.Val = 0 - } else { - e.Val = uint64(int64(e.Val) + amount) - } - return e.Val -} - -// ValueExpirer controls value expiration rate -type ValueExpirer interface { - SetRate(now mclock.AbsTime, rate float64) - SetLogOffset(now mclock.AbsTime, logOffset Fixed64) - LogOffset(now mclock.AbsTime) Fixed64 -} - -// Expirer changes logOffset with a linear rate which can be changed during operation. -// It is not thread safe, if access by multiple goroutines is needed then it should be -// encapsulated into a locked structure. -// Note that if neither SetRate nor SetLogOffset are used during operation then LogOffset -// is thread safe. -type Expirer struct { - lock sync.RWMutex - logOffset Fixed64 - rate float64 - lastUpdate mclock.AbsTime -} - -// SetRate changes the expiration rate which is the inverse of the time constant in -// nanoseconds. -func (e *Expirer) SetRate(now mclock.AbsTime, rate float64) { - e.lock.Lock() - defer e.lock.Unlock() - - dt := now - e.lastUpdate - if dt > 0 { - e.logOffset += Fixed64(logToFixedFactor * float64(dt) * e.rate) - } - e.lastUpdate = now - e.rate = rate -} - -// SetLogOffset sets logOffset instantly. -func (e *Expirer) SetLogOffset(now mclock.AbsTime, logOffset Fixed64) { - e.lock.Lock() - defer e.lock.Unlock() - - e.lastUpdate = now - e.logOffset = logOffset -} - -// LogOffset returns the current logarithmic offset. -func (e *Expirer) LogOffset(now mclock.AbsTime) Fixed64 { - e.lock.RLock() - defer e.lock.RUnlock() - - dt := now - e.lastUpdate - if dt <= 0 { - return e.logOffset - } - return e.logOffset + Fixed64(logToFixedFactor*float64(dt)*e.rate) -} - -// fixedFactor is the fixed point multiplier factor used by Fixed64. -const fixedFactor = 0x1000000 - -// Fixed64 implements 64-bit fixed point arithmetic functions. -type Fixed64 int64 - -// Uint64ToFixed64 converts uint64 integer to Fixed64 format. -func Uint64ToFixed64(f uint64) Fixed64 { - return Fixed64(f * fixedFactor) -} - -// Float64ToFixed64 converts float64 to Fixed64 format. -func Float64ToFixed64(f float64) Fixed64 { - return Fixed64(f * fixedFactor) -} - -// ToUint64 converts Fixed64 format to uint64. -func (f64 Fixed64) ToUint64() uint64 { - return uint64(f64) / fixedFactor -} - -// Fraction returns the fractional part of a Fixed64 value. -func (f64 Fixed64) Fraction() Fixed64 { - return f64 % fixedFactor -} - -var ( - logToFixedFactor = float64(fixedFactor) / math.Log(2) - fixedToLogFactor = math.Log(2) / float64(fixedFactor) -) - -// Pow2 returns the base 2 power of the fixed point value. -func (f64 Fixed64) Pow2() float64 { - return math.Exp(float64(f64) * fixedToLogFactor) -} diff --git a/les/utils/expiredvalue_test.go b/les/utils/expiredvalue_test.go deleted file mode 100644 index 1c751d8cc6..0000000000 --- a/les/utils/expiredvalue_test.go +++ /dev/null @@ -1,195 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import ( - "testing" - - "github.com/ethereum/go-ethereum/common/mclock" -) - -func TestValueExpiration(t *testing.T) { - var cases = []struct { - input ExpiredValue - timeOffset Fixed64 - expect uint64 - }{ - {ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(0), 128}, - {ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(1), 64}, - {ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(2), 32}, - {ExpiredValue{Base: 128, Exp: 2}, Uint64ToFixed64(2), 128}, - {ExpiredValue{Base: 128, Exp: 2}, Uint64ToFixed64(3), 64}, - } - for _, c := range cases { - if got := c.input.Value(c.timeOffset); got != c.expect { - t.Fatalf("Value mismatch, want=%d, got=%d", c.expect, got) - } - } -} - -func TestValueAddition(t *testing.T) { - var cases = []struct { - input ExpiredValue - addend int64 - timeOffset Fixed64 - expect uint64 - expectNet int64 - }{ - // Addition - {ExpiredValue{Base: 128, Exp: 0}, 128, Uint64ToFixed64(0), 256, 128}, - {ExpiredValue{Base: 128, Exp: 2}, 128, Uint64ToFixed64(0), 640, 128}, - - // Addition with offset - {ExpiredValue{Base: 128, Exp: 0}, 128, Uint64ToFixed64(1), 192, 128}, - {ExpiredValue{Base: 128, Exp: 2}, 128, Uint64ToFixed64(1), 384, 128}, - {ExpiredValue{Base: 128, Exp: 2}, 128, Uint64ToFixed64(3), 192, 128}, - - // Subtraction - {ExpiredValue{Base: 128, Exp: 0}, -64, Uint64ToFixed64(0), 64, -64}, - {ExpiredValue{Base: 128, Exp: 0}, -128, Uint64ToFixed64(0), 0, -128}, - {ExpiredValue{Base: 128, Exp: 0}, -192, Uint64ToFixed64(0), 0, -128}, - - // Subtraction with offset - {ExpiredValue{Base: 128, Exp: 0}, -64, Uint64ToFixed64(1), 0, -64}, - {ExpiredValue{Base: 128, Exp: 0}, -128, Uint64ToFixed64(1), 0, -64}, - {ExpiredValue{Base: 128, Exp: 2}, -128, Uint64ToFixed64(1), 128, -128}, - {ExpiredValue{Base: 128, Exp: 2}, -128, Uint64ToFixed64(2), 0, -128}, - } - for _, c := range cases { - if net := c.input.Add(c.addend, c.timeOffset); net != c.expectNet { - t.Fatalf("Net amount mismatch, want=%d, got=%d", c.expectNet, net) - } - if got := c.input.Value(c.timeOffset); got != c.expect { - t.Fatalf("Value mismatch, want=%d, got=%d", c.expect, got) - } - } -} - -func TestExpiredValueAddition(t *testing.T) { - var cases = []struct { - input ExpiredValue - another ExpiredValue - timeOffset Fixed64 - expect uint64 - }{ - {ExpiredValue{Base: 128, Exp: 0}, ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(0), 256}, - {ExpiredValue{Base: 128, Exp: 1}, ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(0), 384}, - {ExpiredValue{Base: 128, Exp: 0}, ExpiredValue{Base: 128, Exp: 1}, Uint64ToFixed64(0), 384}, - {ExpiredValue{Base: 128, Exp: 0}, ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(1), 128}, - } - for _, c := range cases { - c.input.AddExp(c.another) - if got := c.input.Value(c.timeOffset); got != c.expect { - t.Fatalf("Value mismatch, want=%d, got=%d", c.expect, got) - } - } -} - -func TestExpiredValueSubtraction(t *testing.T) { - var cases = []struct { - input ExpiredValue - another ExpiredValue - timeOffset Fixed64 - expect uint64 - }{ - {ExpiredValue{Base: 128, Exp: 0}, ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(0), 0}, - {ExpiredValue{Base: 128, Exp: 0}, ExpiredValue{Base: 128, Exp: 1}, Uint64ToFixed64(0), 0}, - {ExpiredValue{Base: 128, Exp: 1}, ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(0), 128}, - {ExpiredValue{Base: 128, Exp: 1}, ExpiredValue{Base: 128, Exp: 0}, Uint64ToFixed64(1), 64}, - } - for _, c := range cases { - c.input.SubExp(c.another) - if got := c.input.Value(c.timeOffset); got != c.expect { - t.Fatalf("Value mismatch, want=%d, got=%d", c.expect, got) - } - } -} - -func TestLinearExpiredValue(t *testing.T) { - var cases = []struct { - value LinearExpiredValue - now mclock.AbsTime - expect uint64 - }{ - {LinearExpiredValue{ - Offset: 0, - Val: 0, - Rate: mclock.AbsTime(1), - }, 0, 0}, - - {LinearExpiredValue{ - Offset: 1, - Val: 1, - Rate: mclock.AbsTime(1), - }, 0, 1}, - - {LinearExpiredValue{ - Offset: 1, - Val: 1, - Rate: mclock.AbsTime(1), - }, mclock.AbsTime(2), 0}, - - {LinearExpiredValue{ - Offset: 1, - Val: 1, - Rate: mclock.AbsTime(1), - }, mclock.AbsTime(3), 0}, - } - for _, c := range cases { - if value := c.value.Value(c.now); value != c.expect { - t.Fatalf("Value mismatch, want=%d, got=%d", c.expect, value) - } - } -} - -func TestLinearExpiredAddition(t *testing.T) { - var cases = []struct { - value LinearExpiredValue - amount int64 - now mclock.AbsTime - expect uint64 - }{ - {LinearExpiredValue{ - Offset: 0, - Val: 0, - Rate: mclock.AbsTime(1), - }, -1, 0, 0}, - - {LinearExpiredValue{ - Offset: 1, - Val: 1, - Rate: mclock.AbsTime(1), - }, -1, 0, 0}, - - {LinearExpiredValue{ - Offset: 1, - Val: 2, - Rate: mclock.AbsTime(1), - }, -1, mclock.AbsTime(2), 0}, - - {LinearExpiredValue{ - Offset: 1, - Val: 2, - Rate: mclock.AbsTime(1), - }, -2, mclock.AbsTime(2), 0}, - } - for _, c := range cases { - if value := c.value.Add(c.amount, c.now); value != c.expect { - t.Fatalf("Value mismatch, want=%d, got=%d", c.expect, value) - } - } -} diff --git a/les/utils/limiter.go b/les/utils/limiter.go deleted file mode 100644 index 70b7ff64f7..0000000000 --- a/les/utils/limiter.go +++ /dev/null @@ -1,398 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import ( - "sync" - - "github.com/ethereum/go-ethereum/p2p/enode" - "golang.org/x/exp/slices" -) - -const maxSelectionWeight = 1000000000 // maximum selection weight of each individual node/address group - -// Limiter protects a network request serving mechanism from denial-of-service attacks. -// It limits the total amount of resources used for serving requests while ensuring that -// the most valuable connections always have a reasonable chance of being served. -type Limiter struct { - lock sync.Mutex - cond *sync.Cond - quit bool - - nodes map[enode.ID]*nodeQueue - addresses map[string]*addressGroup - addressSelect, valueSelect *WeightedRandomSelect - maxValue float64 - maxCost, sumCost, sumCostLimit uint - selectAddressNext bool -} - -// nodeQueue represents queued requests coming from a single node ID -type nodeQueue struct { - queue []request // always nil if penaltyCost != 0 - id enode.ID - address string - value float64 - flatWeight, valueWeight uint64 // current selection weights in the address/value selectors - sumCost uint // summed cost of requests queued by the node - penaltyCost uint // cumulative cost of dropped requests since last processed request - groupIndex int -} - -// addressGroup is a group of node IDs that have sent their last requests from the same -// network address -type addressGroup struct { - nodes []*nodeQueue - nodeSelect *WeightedRandomSelect - sumFlatWeight, groupWeight uint64 -} - -// request represents an incoming request scheduled for processing -type request struct { - process chan chan struct{} - cost uint -} - -// flatWeight distributes weights equally between each active network address -func flatWeight(item interface{}) uint64 { return item.(*nodeQueue).flatWeight } - -// add adds the node queue to the address group. It is the caller's responsibility to -// add the address group to the address map and the address selector if it wasn't -// there before. -func (ag *addressGroup) add(nq *nodeQueue) { - if nq.groupIndex != -1 { - panic("added node queue is already in an address group") - } - l := len(ag.nodes) - nq.groupIndex = l - ag.nodes = append(ag.nodes, nq) - ag.sumFlatWeight += nq.flatWeight - ag.groupWeight = ag.sumFlatWeight / uint64(l+1) - ag.nodeSelect.Update(ag.nodes[l]) -} - -// update updates the selection weight of the node queue inside the address group. -// It is the caller's responsibility to update the group's selection weight in the -// address selector. -func (ag *addressGroup) update(nq *nodeQueue, weight uint64) { - if nq.groupIndex == -1 || nq.groupIndex >= len(ag.nodes) || ag.nodes[nq.groupIndex] != nq { - panic("updated node queue is not in this address group") - } - ag.sumFlatWeight += weight - nq.flatWeight - nq.flatWeight = weight - ag.groupWeight = ag.sumFlatWeight / uint64(len(ag.nodes)) - ag.nodeSelect.Update(nq) -} - -// remove removes the node queue from the address group. It is the caller's responsibility -// to remove the address group from the address map if it is empty. -func (ag *addressGroup) remove(nq *nodeQueue) { - if nq.groupIndex == -1 || nq.groupIndex >= len(ag.nodes) || ag.nodes[nq.groupIndex] != nq { - panic("removed node queue is not in this address group") - } - - l := len(ag.nodes) - 1 - if nq.groupIndex != l { - ag.nodes[nq.groupIndex] = ag.nodes[l] - ag.nodes[nq.groupIndex].groupIndex = nq.groupIndex - } - nq.groupIndex = -1 - ag.nodes = ag.nodes[:l] - ag.sumFlatWeight -= nq.flatWeight - if l >= 1 { - ag.groupWeight = ag.sumFlatWeight / uint64(l) - } else { - ag.groupWeight = 0 - } - ag.nodeSelect.Remove(nq) -} - -// choose selects one of the node queues belonging to the address group -func (ag *addressGroup) choose() *nodeQueue { - return ag.nodeSelect.Choose().(*nodeQueue) -} - -// NewLimiter creates a new Limiter -func NewLimiter(sumCostLimit uint) *Limiter { - l := &Limiter{ - addressSelect: NewWeightedRandomSelect(func(item interface{}) uint64 { return item.(*addressGroup).groupWeight }), - valueSelect: NewWeightedRandomSelect(func(item interface{}) uint64 { return item.(*nodeQueue).valueWeight }), - nodes: make(map[enode.ID]*nodeQueue), - addresses: make(map[string]*addressGroup), - sumCostLimit: sumCostLimit, - } - l.cond = sync.NewCond(&l.lock) - go l.processLoop() - return l -} - -// selectionWeights calculates the selection weights of a node for both the address and -// the value selector. The selection weight depends on the next request cost or the -// summed cost of recently dropped requests. -func (l *Limiter) selectionWeights(reqCost uint, value float64) (flatWeight, valueWeight uint64) { - if value > l.maxValue { - l.maxValue = value - } - if value > 0 { - // normalize value to <= 1 - value /= l.maxValue - } - if reqCost > l.maxCost { - l.maxCost = reqCost - } - relCost := float64(reqCost) / float64(l.maxCost) - var f float64 - if relCost <= 0.001 { - f = 1 - } else { - f = 0.001 / relCost - } - f *= maxSelectionWeight - flatWeight, valueWeight = uint64(f), uint64(f*value) - if flatWeight == 0 { - flatWeight = 1 - } - return -} - -// Add adds a new request to the node queue belonging to the given id. Value belongs -// to the requesting node. A higher value gives the request a higher chance of being -// served quickly in case of heavy load or a DDoS attack. Cost is a rough estimate -// of the serving cost of the request. A lower cost also gives the request a -// better chance. -func (l *Limiter) Add(id enode.ID, address string, value float64, reqCost uint) chan chan struct{} { - l.lock.Lock() - defer l.lock.Unlock() - - process := make(chan chan struct{}, 1) - if l.quit { - close(process) - return process - } - if reqCost == 0 { - reqCost = 1 - } - if nq, ok := l.nodes[id]; ok { - if nq.queue != nil { - nq.queue = append(nq.queue, request{process, reqCost}) - nq.sumCost += reqCost - nq.value = value - if address != nq.address { - // known id sending request from a new address, move to different address group - l.removeFromGroup(nq) - l.addToGroup(nq, address) - } - } else { - // already waiting on a penalty, just add to the penalty cost and drop the request - nq.penaltyCost += reqCost - l.update(nq) - close(process) - return process - } - } else { - nq := &nodeQueue{ - queue: []request{{process, reqCost}}, - id: id, - value: value, - sumCost: reqCost, - groupIndex: -1, - } - nq.flatWeight, nq.valueWeight = l.selectionWeights(reqCost, value) - if len(l.nodes) == 0 { - l.cond.Signal() - } - l.nodes[id] = nq - if nq.valueWeight != 0 { - l.valueSelect.Update(nq) - } - l.addToGroup(nq, address) - } - l.sumCost += reqCost - if l.sumCost > l.sumCostLimit { - l.dropRequests() - } - return process -} - -// update updates the selection weights of the node queue -func (l *Limiter) update(nq *nodeQueue) { - var cost uint - if nq.queue != nil { - cost = nq.queue[0].cost - } else { - cost = nq.penaltyCost - } - flatWeight, valueWeight := l.selectionWeights(cost, nq.value) - ag := l.addresses[nq.address] - ag.update(nq, flatWeight) - l.addressSelect.Update(ag) - nq.valueWeight = valueWeight - l.valueSelect.Update(nq) -} - -// addToGroup adds the node queue to the given address group. The group is created if -// it does not exist yet. -func (l *Limiter) addToGroup(nq *nodeQueue, address string) { - nq.address = address - ag := l.addresses[address] - if ag == nil { - ag = &addressGroup{nodeSelect: NewWeightedRandomSelect(flatWeight)} - l.addresses[address] = ag - } - ag.add(nq) - l.addressSelect.Update(ag) -} - -// removeFromGroup removes the node queue from its address group -func (l *Limiter) removeFromGroup(nq *nodeQueue) { - ag := l.addresses[nq.address] - ag.remove(nq) - if len(ag.nodes) == 0 { - delete(l.addresses, nq.address) - } - l.addressSelect.Update(ag) -} - -// remove removes the node queue from its address group, the nodes map and the value -// selector -func (l *Limiter) remove(nq *nodeQueue) { - l.removeFromGroup(nq) - if nq.valueWeight != 0 { - l.valueSelect.Remove(nq) - } - delete(l.nodes, nq.id) -} - -// choose selects the next node queue to process. -func (l *Limiter) choose() *nodeQueue { - if l.valueSelect.IsEmpty() || l.selectAddressNext { - if ag, ok := l.addressSelect.Choose().(*addressGroup); ok { - l.selectAddressNext = false - return ag.choose() - } - } - nq, _ := l.valueSelect.Choose().(*nodeQueue) - l.selectAddressNext = true - return nq -} - -// processLoop processes requests sequentially -func (l *Limiter) processLoop() { - l.lock.Lock() - defer l.lock.Unlock() - - for { - if l.quit { - for _, nq := range l.nodes { - for _, request := range nq.queue { - close(request.process) - } - } - return - } - nq := l.choose() - if nq == nil { - l.cond.Wait() - continue - } - if nq.queue != nil { - request := nq.queue[0] - nq.queue = nq.queue[1:] - nq.sumCost -= request.cost - l.sumCost -= request.cost - l.lock.Unlock() - ch := make(chan struct{}) - request.process <- ch - <-ch - l.lock.Lock() - if len(nq.queue) > 0 { - l.update(nq) - } else { - l.remove(nq) - } - } else { - // penalized queue removed, next request will be added to a clean queue - l.remove(nq) - } - } -} - -// Stop stops the processing loop. All queued and future requests are rejected. -func (l *Limiter) Stop() { - l.lock.Lock() - defer l.lock.Unlock() - - l.quit = true - l.cond.Signal() -} - -type dropListItem struct { - nq *nodeQueue - priority float64 -} - -// dropRequests selects the nodes with the highest queued request cost to selection -// weight ratio and drops their queued request. The empty node queues stay in the -// selectors with a low selection weight in order to penalize these nodes. -func (l *Limiter) dropRequests() { - var ( - sumValue float64 - list []dropListItem - ) - for _, nq := range l.nodes { - sumValue += nq.value - } - for _, nq := range l.nodes { - if nq.sumCost == 0 { - continue - } - w := 1 / float64(len(l.addresses)*len(l.addresses[nq.address].nodes)) - if sumValue > 0 { - w += nq.value / sumValue - } - list = append(list, dropListItem{ - nq: nq, - priority: w / float64(nq.sumCost), - }) - } - slices.SortFunc(list, func(a, b dropListItem) int { - if a.priority < b.priority { - return -1 - } - if a.priority < b.priority { - return 1 - } - return 0 - }) - for _, item := range list { - for _, request := range item.nq.queue { - close(request.process) - } - // make the queue penalized; no more requests are accepted until the node is - // selected based on the penalty cost which is the cumulative cost of all dropped - // requests. This ensures that sending excess requests is always penalized - // and incentivizes the sender to stop for a while if no replies are received. - item.nq.queue = nil - item.nq.penaltyCost = item.nq.sumCost - l.sumCost -= item.nq.sumCost // penalty costs are not counted in sumCost - item.nq.sumCost = 0 - l.update(item.nq) - if l.sumCost <= l.sumCostLimit/2 { - return - } - } -} diff --git a/les/utils/limiter_test.go b/les/utils/limiter_test.go deleted file mode 100644 index c031b21de5..0000000000 --- a/les/utils/limiter_test.go +++ /dev/null @@ -1,206 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import ( - "crypto/rand" - "testing" - - "github.com/ethereum/go-ethereum/p2p/enode" -) - -const ( - ltTolerance = 0.03 - ltRounds = 7 -) - -type ( - ltNode struct { - addr, id int - value, exp float64 - cost uint - reqRate float64 - reqMax, runCount int - lastTotalCost uint - - served, dropped int - } - - ltResult struct { - node *ltNode - ch chan struct{} - } - - limTest struct { - limiter *Limiter - results chan ltResult - runCount int - expCost, totalCost uint - } -) - -func (lt *limTest) request(n *ltNode) { - var ( - address string - id enode.ID - ) - if n.addr >= 0 { - address = string([]byte{byte(n.addr)}) - } else { - var b [32]byte - rand.Read(b[:]) - address = string(b[:]) - } - if n.id >= 0 { - id = enode.ID{byte(n.id)} - } else { - rand.Read(id[:]) - } - lt.runCount++ - n.runCount++ - cch := lt.limiter.Add(id, address, n.value, n.cost) - go func() { - lt.results <- ltResult{n, <-cch} - }() -} - -func (lt *limTest) moreRequests(n *ltNode) { - maxStart := int(float64(lt.totalCost-n.lastTotalCost) * n.reqRate) - if maxStart != 0 { - n.lastTotalCost = lt.totalCost - } - for n.reqMax > n.runCount && maxStart > 0 { - lt.request(n) - maxStart-- - } -} - -func (lt *limTest) process() { - res := <-lt.results - lt.runCount-- - res.node.runCount-- - if res.ch != nil { - res.node.served++ - if res.node.exp != 0 { - lt.expCost += res.node.cost - } - lt.totalCost += res.node.cost - close(res.ch) - } else { - res.node.dropped++ - } -} - -func TestLimiter(t *testing.T) { - limTests := [][]*ltNode{ - { // one id from an individual address and two ids from a shared address - {addr: 0, id: 0, value: 0, cost: 1, reqRate: 1, reqMax: 1, exp: 0.5}, - {addr: 1, id: 1, value: 0, cost: 1, reqRate: 1, reqMax: 1, exp: 0.25}, - {addr: 1, id: 2, value: 0, cost: 1, reqRate: 1, reqMax: 1, exp: 0.25}, - }, - { // varying request costs - {addr: 0, id: 0, value: 0, cost: 10, reqRate: 0.2, reqMax: 1, exp: 0.5}, - {addr: 1, id: 1, value: 0, cost: 3, reqRate: 0.5, reqMax: 1, exp: 0.25}, - {addr: 1, id: 2, value: 0, cost: 1, reqRate: 1, reqMax: 1, exp: 0.25}, - }, - { // different request rate - {addr: 0, id: 0, value: 0, cost: 1, reqRate: 2, reqMax: 2, exp: 0.5}, - {addr: 1, id: 1, value: 0, cost: 1, reqRate: 10, reqMax: 10, exp: 0.25}, - {addr: 1, id: 2, value: 0, cost: 1, reqRate: 1, reqMax: 1, exp: 0.25}, - }, - { // adding value - {addr: 0, id: 0, value: 3, cost: 1, reqRate: 1, reqMax: 1, exp: (0.5 + 0.3) / 2}, - {addr: 1, id: 1, value: 0, cost: 1, reqRate: 1, reqMax: 1, exp: 0.25 / 2}, - {addr: 1, id: 2, value: 7, cost: 1, reqRate: 1, reqMax: 1, exp: (0.25 + 0.7) / 2}, - }, - { // DoS attack from a single address with a single id - {addr: 0, id: 0, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 1, id: 1, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 2, id: 2, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 3, id: 3, value: 0, cost: 1, reqRate: 10, reqMax: 1000000000, exp: 0}, - }, - { // DoS attack from a single address with different ids - {addr: 0, id: 0, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 1, id: 1, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 2, id: 2, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 3, id: -1, value: 0, cost: 1, reqRate: 1, reqMax: 1000000000, exp: 0}, - }, - { // DDoS attack from different addresses with a single id - {addr: 0, id: 0, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 1, id: 1, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 2, id: 2, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: -1, id: 3, value: 0, cost: 1, reqRate: 1, reqMax: 1000000000, exp: 0}, - }, - { // DDoS attack from different addresses with different ids - {addr: 0, id: 0, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 1, id: 1, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: 2, id: 2, value: 1, cost: 1, reqRate: 1, reqMax: 1, exp: 0.3333}, - {addr: -1, id: -1, value: 0, cost: 1, reqRate: 1, reqMax: 1000000000, exp: 0}, - }, - } - - lt := &limTest{ - limiter: NewLimiter(100), - results: make(chan ltResult), - } - for _, test := range limTests { - lt.expCost, lt.totalCost = 0, 0 - iterCount := 10000 - for j := 0; j < ltRounds; j++ { - // try to reach expected target range in multiple rounds with increasing iteration counts - last := j == ltRounds-1 - for _, n := range test { - lt.request(n) - } - for i := 0; i < iterCount; i++ { - lt.process() - for _, n := range test { - lt.moreRequests(n) - } - } - for lt.runCount > 0 { - lt.process() - } - if spamRatio := 1 - float64(lt.expCost)/float64(lt.totalCost); spamRatio > 0.5*(1+ltTolerance) { - t.Errorf("Spam ratio too high (%f)", spamRatio) - } - fail, success := false, true - for _, n := range test { - if n.exp != 0 { - if n.dropped > 0 { - t.Errorf("Dropped %d requests of non-spam node", n.dropped) - fail = true - } - r := float64(n.served) * float64(n.cost) / float64(lt.expCost) - if r < n.exp*(1-ltTolerance) || r > n.exp*(1+ltTolerance) { - if last { - // print error only if the target is still not reached in the last round - t.Errorf("Request ratio (%f) does not match expected value (%f)", r, n.exp) - } - success = false - } - } - } - if fail || success { - break - } - // neither failed nor succeeded; try more iterations to reach probability targets - iterCount *= 2 - } - } - lt.limiter.Stop() -} diff --git a/les/utils/timeutils.go b/les/utils/timeutils.go deleted file mode 100644 index 62a4285d15..0000000000 --- a/les/utils/timeutils.go +++ /dev/null @@ -1,69 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import ( - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" -) - -type UpdateTimer struct { - clock mclock.Clock - lock sync.Mutex - last mclock.AbsTime - threshold time.Duration -} - -func NewUpdateTimer(clock mclock.Clock, threshold time.Duration) *UpdateTimer { - // We don't accept the update threshold less than 0. - if threshold < 0 { - return nil - } - // Don't panic for lazy users - if clock == nil { - clock = mclock.System{} - } - return &UpdateTimer{ - clock: clock, - last: clock.Now(), - threshold: threshold, - } -} - -func (t *UpdateTimer) Update(callback func(diff time.Duration) bool) bool { - return t.UpdateAt(t.clock.Now(), callback) -} - -func (t *UpdateTimer) UpdateAt(at mclock.AbsTime, callback func(diff time.Duration) bool) bool { - t.lock.Lock() - defer t.lock.Unlock() - - diff := time.Duration(at - t.last) - if diff < 0 { - diff = 0 - } - if diff < t.threshold { - return false - } - if callback(diff) { - t.last = at - return true - } - return false -} diff --git a/les/utils/timeutils_test.go b/les/utils/timeutils_test.go deleted file mode 100644 index b219d0439d..0000000000 --- a/les/utils/timeutils_test.go +++ /dev/null @@ -1,47 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import ( - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" -) - -func TestUpdateTimer(t *testing.T) { - timer := NewUpdateTimer(mclock.System{}, -1) - if timer != nil { - t.Fatalf("Create update timer with negative threshold") - } - sim := &mclock.Simulated{} - timer = NewUpdateTimer(sim, time.Second) - if updated := timer.Update(func(diff time.Duration) bool { return true }); updated { - t.Fatalf("Update the clock without reaching the threshold") - } - sim.Run(time.Second) - if updated := timer.Update(func(diff time.Duration) bool { return true }); !updated { - t.Fatalf("Doesn't update the clock when reaching the threshold") - } - if updated := timer.UpdateAt(sim.Now().Add(time.Second), func(diff time.Duration) bool { return true }); !updated { - t.Fatalf("Doesn't update the clock when reaching the threshold") - } - timer = NewUpdateTimer(sim, 0) - if updated := timer.Update(func(diff time.Duration) bool { return true }); !updated { - t.Fatalf("Doesn't update the clock without threshold limitaion") - } -} diff --git a/les/utils/weighted_select.go b/les/utils/weighted_select.go deleted file mode 100644 index 486b00820a..0000000000 --- a/les/utils/weighted_select.go +++ /dev/null @@ -1,183 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import ( - "math" - "math/rand" - - "github.com/ethereum/go-ethereum/log" -) - -type ( - // WeightedRandomSelect is capable of weighted random selection from a set of items - WeightedRandomSelect struct { - root *wrsNode - idx map[WrsItem]int - wfn WeightFn - } - WrsItem interface{} - WeightFn func(interface{}) uint64 -) - -// NewWeightedRandomSelect returns a new WeightedRandomSelect structure -func NewWeightedRandomSelect(wfn WeightFn) *WeightedRandomSelect { - return &WeightedRandomSelect{root: &wrsNode{maxItems: wrsBranches}, idx: make(map[WrsItem]int), wfn: wfn} -} - -// Update updates an item's weight, adds it if it was non-existent or removes it if -// the new weight is zero. Note that explicitly updating decreasing weights is not necessary. -func (w *WeightedRandomSelect) Update(item WrsItem) { - w.setWeight(item, w.wfn(item)) -} - -// Remove removes an item from the set -func (w *WeightedRandomSelect) Remove(item WrsItem) { - w.setWeight(item, 0) -} - -// IsEmpty returns true if the set is empty -func (w *WeightedRandomSelect) IsEmpty() bool { - return w.root.sumCost == 0 -} - -// setWeight sets an item's weight to a specific value (removes it if zero) -func (w *WeightedRandomSelect) setWeight(item WrsItem, weight uint64) { - if weight > math.MaxInt64-w.root.sumCost { - // old weight is still included in sumCost, remove and check again - w.setWeight(item, 0) - if weight > math.MaxInt64-w.root.sumCost { - log.Error("WeightedRandomSelect overflow", "sumCost", w.root.sumCost, "new weight", weight) - weight = math.MaxInt64 - w.root.sumCost - } - } - idx, ok := w.idx[item] - if ok { - w.root.setWeight(idx, weight) - if weight == 0 { - delete(w.idx, item) - } - } else { - if weight != 0 { - if w.root.itemCnt == w.root.maxItems { - // add a new level - newRoot := &wrsNode{sumCost: w.root.sumCost, itemCnt: w.root.itemCnt, level: w.root.level + 1, maxItems: w.root.maxItems * wrsBranches} - newRoot.items[0] = w.root - newRoot.weights[0] = w.root.sumCost - w.root = newRoot - } - w.idx[item] = w.root.insert(item, weight) - } - } -} - -// Choose randomly selects an item from the set, with a chance proportional to its -// current weight. If the weight of the chosen element has been decreased since the -// last stored value, returns it with a newWeight/oldWeight chance, otherwise just -// updates its weight and selects another one -func (w *WeightedRandomSelect) Choose() WrsItem { - for { - if w.root.sumCost == 0 { - return nil - } - val := uint64(rand.Int63n(int64(w.root.sumCost))) - choice, lastWeight := w.root.choose(val) - weight := w.wfn(choice) - if weight != lastWeight { - w.setWeight(choice, weight) - } - if weight >= lastWeight || uint64(rand.Int63n(int64(lastWeight))) < weight { - return choice - } - } -} - -const wrsBranches = 8 // max number of branches in the wrsNode tree - -// wrsNode is a node of a tree structure that can store WrsItems or further wrsNodes. -type wrsNode struct { - items [wrsBranches]interface{} - weights [wrsBranches]uint64 - sumCost uint64 - level, itemCnt, maxItems int -} - -// insert recursively inserts a new item to the tree and returns the item index -func (n *wrsNode) insert(item WrsItem, weight uint64) int { - branch := 0 - for n.items[branch] != nil && (n.level == 0 || n.items[branch].(*wrsNode).itemCnt == n.items[branch].(*wrsNode).maxItems) { - branch++ - if branch == wrsBranches { - panic(nil) - } - } - n.itemCnt++ - n.sumCost += weight - n.weights[branch] += weight - if n.level == 0 { - n.items[branch] = item - return branch - } - var subNode *wrsNode - if n.items[branch] == nil { - subNode = &wrsNode{maxItems: n.maxItems / wrsBranches, level: n.level - 1} - n.items[branch] = subNode - } else { - subNode = n.items[branch].(*wrsNode) - } - subIdx := subNode.insert(item, weight) - return subNode.maxItems*branch + subIdx -} - -// setWeight updates the weight of a certain item (which should exist) and returns -// the change of the last weight value stored in the tree -func (n *wrsNode) setWeight(idx int, weight uint64) uint64 { - if n.level == 0 { - oldWeight := n.weights[idx] - n.weights[idx] = weight - diff := weight - oldWeight - n.sumCost += diff - if weight == 0 { - n.items[idx] = nil - n.itemCnt-- - } - return diff - } - branchItems := n.maxItems / wrsBranches - branch := idx / branchItems - diff := n.items[branch].(*wrsNode).setWeight(idx-branch*branchItems, weight) - n.weights[branch] += diff - n.sumCost += diff - if weight == 0 { - n.itemCnt-- - } - return diff -} - -// choose recursively selects an item from the tree and returns it along with its weight -func (n *wrsNode) choose(val uint64) (WrsItem, uint64) { - for i, w := range n.weights { - if val < w { - if n.level == 0 { - return n.items[i].(WrsItem), n.weights[i] - } - return n.items[i].(*wrsNode).choose(val) - } - val -= w - } - panic(nil) -} diff --git a/les/utils/weighted_select_test.go b/les/utils/weighted_select_test.go deleted file mode 100644 index 3e1c0ad987..0000000000 --- a/les/utils/weighted_select_test.go +++ /dev/null @@ -1,68 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package utils - -import ( - "math/rand" - "testing" -) - -type testWrsItem struct { - idx int - widx *int -} - -func testWeight(i interface{}) uint64 { - t := i.(*testWrsItem) - w := *t.widx - if w == -1 || w == t.idx { - return uint64(t.idx + 1) - } - return 0 -} - -func TestWeightedRandomSelect(t *testing.T) { - testFn := func(cnt int) { - s := NewWeightedRandomSelect(testWeight) - w := -1 - list := make([]testWrsItem, cnt) - for i := range list { - list[i] = testWrsItem{idx: i, widx: &w} - s.Update(&list[i]) - } - w = rand.Intn(cnt) - c := s.Choose() - if c == nil { - t.Errorf("expected item, got nil") - } else { - if c.(*testWrsItem).idx != w { - t.Errorf("expected another item") - } - } - w = -2 - if s.Choose() != nil { - t.Errorf("expected nil, got item") - } - } - testFn(1) - testFn(10) - testFn(100) - testFn(1000) - testFn(10000) - testFn(100000) - testFn(1000000) -} diff --git a/les/vflux/client/api.go b/les/vflux/client/api.go deleted file mode 100644 index 135273ef96..0000000000 --- a/les/vflux/client/api.go +++ /dev/null @@ -1,107 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/p2p/enode" -) - -// PrivateClientAPI implements the vflux client side API -type PrivateClientAPI struct { - vt *ValueTracker -} - -// NewPrivateClientAPI creates a PrivateClientAPI -func NewPrivateClientAPI(vt *ValueTracker) *PrivateClientAPI { - return &PrivateClientAPI{vt} -} - -// parseNodeStr converts either an enode address or a plain hex node id to enode.ID -func parseNodeStr(nodeStr string) (enode.ID, error) { - if id, err := enode.ParseID(nodeStr); err == nil { - return id, nil - } - if node, err := enode.Parse(enode.ValidSchemes, nodeStr); err == nil { - return node.ID(), nil - } else { - return enode.ID{}, err - } -} - -// RequestStats returns the current contents of the reference request basket, with -// request values meaning average per request rather than total. -func (api *PrivateClientAPI) RequestStats() []RequestStatsItem { - return api.vt.RequestStats() -} - -// Distribution returns a distribution as a series of (X, Y) chart coordinates, -// where the X axis is the response time in seconds while the Y axis is the amount of -// service value received with a response time close to the X coordinate. -// The distribution is optionally normalized to a sum of 1. -// If nodeStr == "" then the global distribution is returned, otherwise the individual -// distribution of the specified server node. -func (api *PrivateClientAPI) Distribution(nodeStr string, normalized bool) (RtDistribution, error) { - var expFactor utils.ExpirationFactor - if !normalized { - expFactor = utils.ExpFactor(api.vt.StatsExpirer().LogOffset(mclock.Now())) - } - if nodeStr == "" { - return api.vt.RtStats().Distribution(normalized, expFactor), nil - } - if id, err := parseNodeStr(nodeStr); err == nil { - return api.vt.GetNode(id).RtStats().Distribution(normalized, expFactor), nil - } else { - return RtDistribution{}, err - } -} - -// Timeout suggests a timeout value based on either the global distribution or the -// distribution of the specified node. The parameter is the desired rate of timeouts -// assuming a similar distribution in the future. -// Note that the actual timeout should have a sensible minimum bound so that operating -// under ideal working conditions for a long time (for example, using a local server -// with very low response times) will not make it very hard for the system to accommodate -// longer response times in the future. -func (api *PrivateClientAPI) Timeout(nodeStr string, failRate float64) (float64, error) { - if nodeStr == "" { - return float64(api.vt.RtStats().Timeout(failRate)) / float64(time.Second), nil - } - if id, err := parseNodeStr(nodeStr); err == nil { - return float64(api.vt.GetNode(id).RtStats().Timeout(failRate)) / float64(time.Second), nil - } else { - return 0, err - } -} - -// Value calculates the total service value provided either globally or by the specified -// server node, using a weight function based on the given timeout. -func (api *PrivateClientAPI) Value(nodeStr string, timeout float64) (float64, error) { - wt := TimeoutWeights(time.Duration(timeout * float64(time.Second))) - expFactor := utils.ExpFactor(api.vt.StatsExpirer().LogOffset(mclock.Now())) - if nodeStr == "" { - return api.vt.RtStats().Value(wt, expFactor), nil - } - if id, err := parseNodeStr(nodeStr); err == nil { - return api.vt.GetNode(id).RtStats().Value(wt, expFactor), nil - } else { - return 0, err - } -} diff --git a/les/vflux/client/fillset.go b/les/vflux/client/fillset.go deleted file mode 100644 index 0da850bcac..0000000000 --- a/les/vflux/client/fillset.go +++ /dev/null @@ -1,107 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "sync" - - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -// FillSet tries to read nodes from an input iterator and add them to a node set by -// setting the specified node state flag(s) until the size of the set reaches the target. -// Note that other mechanisms (like other FillSet instances reading from different inputs) -// can also set the same flag(s) and FillSet will always care about the total number of -// nodes having those flags. -type FillSet struct { - lock sync.Mutex - cond *sync.Cond - ns *nodestate.NodeStateMachine - input enode.Iterator - closed bool - flags nodestate.Flags - count, target int -} - -// NewFillSet creates a new FillSet -func NewFillSet(ns *nodestate.NodeStateMachine, input enode.Iterator, flags nodestate.Flags) *FillSet { - fs := &FillSet{ - ns: ns, - input: input, - flags: flags, - } - fs.cond = sync.NewCond(&fs.lock) - - ns.SubscribeState(flags, func(n *enode.Node, oldState, newState nodestate.Flags) { - fs.lock.Lock() - if oldState.Equals(flags) { - fs.count-- - } - if newState.Equals(flags) { - fs.count++ - } - if fs.target > fs.count { - fs.cond.Signal() - } - fs.lock.Unlock() - }) - - go fs.readLoop() - return fs -} - -// readLoop keeps reading nodes from the input and setting the specified flags for them -// whenever the node set size is under the current target -func (fs *FillSet) readLoop() { - for { - fs.lock.Lock() - for fs.target <= fs.count && !fs.closed { - fs.cond.Wait() - } - - fs.lock.Unlock() - if !fs.input.Next() { - return - } - fs.ns.SetState(fs.input.Node(), fs.flags, nodestate.Flags{}, 0) - } -} - -// SetTarget sets the current target for node set size. If the previous target was not -// reached and FillSet was still waiting for the next node from the input then the next -// incoming node will be added to the set regardless of the target. This ensures that -// all nodes coming from the input are eventually added to the set. -func (fs *FillSet) SetTarget(target int) { - fs.lock.Lock() - defer fs.lock.Unlock() - - fs.target = target - if fs.target > fs.count { - fs.cond.Signal() - } -} - -// Close shuts FillSet down and closes the input iterator -func (fs *FillSet) Close() { - fs.lock.Lock() - defer fs.lock.Unlock() - - fs.closed = true - fs.input.Close() - fs.cond.Signal() -} diff --git a/les/vflux/client/fillset_test.go b/les/vflux/client/fillset_test.go deleted file mode 100644 index 9a5a2a98a8..0000000000 --- a/les/vflux/client/fillset_test.go +++ /dev/null @@ -1,119 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "crypto/rand" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -type testIter struct { - waitCh chan struct{} - nodeCh chan *enode.Node - node *enode.Node -} - -func (i *testIter) Next() bool { - if _, ok := <-i.waitCh; !ok { - return false - } - i.node = <-i.nodeCh - return true -} - -func (i *testIter) Node() *enode.Node { - return i.node -} - -func (i *testIter) Close() { - close(i.waitCh) -} - -func (i *testIter) push() { - var id enode.ID - rand.Read(id[:]) - i.nodeCh <- enode.SignNull(new(enr.Record), id) -} - -func (i *testIter) waiting(timeout time.Duration) bool { - select { - case i.waitCh <- struct{}{}: - return true - case <-time.After(timeout): - return false - } -} - -func TestFillSet(t *testing.T) { - t.Parallel() - - ns := nodestate.NewNodeStateMachine(nil, nil, &mclock.Simulated{}, testSetup) - iter := &testIter{ - waitCh: make(chan struct{}), - nodeCh: make(chan *enode.Node), - } - fs := NewFillSet(ns, iter, sfTest1) - ns.Start() - - expWaiting := func(i int, push bool) { - for ; i > 0; i-- { - if !iter.waiting(time.Second * 10) { - t.Fatalf("FillSet not waiting for new nodes") - } - if push { - iter.push() - } - } - } - - expNotWaiting := func() { - if iter.waiting(time.Millisecond * 100) { - t.Fatalf("FillSet unexpectedly waiting for new nodes") - } - } - - expNotWaiting() - fs.SetTarget(3) - expWaiting(3, true) - expNotWaiting() - fs.SetTarget(100) - expWaiting(2, true) - expWaiting(1, false) - // lower the target before the previous one has been filled up - fs.SetTarget(0) - iter.push() - expNotWaiting() - fs.SetTarget(10) - expWaiting(4, true) - expNotWaiting() - // remove all previously set flags - ns.ForEach(sfTest1, nodestate.Flags{}, func(node *enode.Node, state nodestate.Flags) { - ns.SetState(node, nodestate.Flags{}, sfTest1, 0) - }) - // now expect FillSet to fill the set up again with 10 new nodes - expWaiting(10, true) - expNotWaiting() - - fs.Close() - ns.Stop() -} diff --git a/les/vflux/client/queueiterator.go b/les/vflux/client/queueiterator.go deleted file mode 100644 index ad3f8df5bb..0000000000 --- a/les/vflux/client/queueiterator.go +++ /dev/null @@ -1,123 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "sync" - - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -// QueueIterator returns nodes from the specified selectable set in the same order as -// they entered the set. -type QueueIterator struct { - lock sync.Mutex - cond *sync.Cond - - ns *nodestate.NodeStateMachine - queue []*enode.Node - nextNode *enode.Node - waitCallback func(bool) - fifo, closed bool -} - -// NewQueueIterator creates a new QueueIterator. Nodes are selectable if they have all the required -// and none of the disabled flags set. When a node is selected the selectedFlag is set which also -// disables further selectability until it is removed or times out. -func NewQueueIterator(ns *nodestate.NodeStateMachine, requireFlags, disableFlags nodestate.Flags, fifo bool, waitCallback func(bool)) *QueueIterator { - qi := &QueueIterator{ - ns: ns, - fifo: fifo, - waitCallback: waitCallback, - } - qi.cond = sync.NewCond(&qi.lock) - - ns.SubscribeState(requireFlags.Or(disableFlags), func(n *enode.Node, oldState, newState nodestate.Flags) { - oldMatch := oldState.HasAll(requireFlags) && oldState.HasNone(disableFlags) - newMatch := newState.HasAll(requireFlags) && newState.HasNone(disableFlags) - if newMatch == oldMatch { - return - } - - qi.lock.Lock() - defer qi.lock.Unlock() - - if newMatch { - qi.queue = append(qi.queue, n) - } else { - id := n.ID() - for i, qn := range qi.queue { - if qn.ID() == id { - copy(qi.queue[i:len(qi.queue)-1], qi.queue[i+1:]) - qi.queue = qi.queue[:len(qi.queue)-1] - break - } - } - } - qi.cond.Signal() - }) - return qi -} - -// Next moves to the next selectable node. -func (qi *QueueIterator) Next() bool { - qi.lock.Lock() - if !qi.closed && len(qi.queue) == 0 { - if qi.waitCallback != nil { - qi.waitCallback(true) - } - for !qi.closed && len(qi.queue) == 0 { - qi.cond.Wait() - } - if qi.waitCallback != nil { - qi.waitCallback(false) - } - } - if qi.closed { - qi.nextNode = nil - qi.lock.Unlock() - return false - } - // Move to the next node in queue. - if qi.fifo { - qi.nextNode = qi.queue[0] - copy(qi.queue[:len(qi.queue)-1], qi.queue[1:]) - qi.queue = qi.queue[:len(qi.queue)-1] - } else { - qi.nextNode = qi.queue[len(qi.queue)-1] - qi.queue = qi.queue[:len(qi.queue)-1] - } - qi.lock.Unlock() - return true -} - -// Close ends the iterator. -func (qi *QueueIterator) Close() { - qi.lock.Lock() - qi.closed = true - qi.lock.Unlock() - qi.cond.Signal() -} - -// Node returns the current node. -func (qi *QueueIterator) Node() *enode.Node { - qi.lock.Lock() - defer qi.lock.Unlock() - - return qi.nextNode -} diff --git a/les/vflux/client/queueiterator_test.go b/les/vflux/client/queueiterator_test.go deleted file mode 100644 index c7cb649082..0000000000 --- a/les/vflux/client/queueiterator_test.go +++ /dev/null @@ -1,99 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -func testNode(i int) *enode.Node { - return enode.SignNull(new(enr.Record), testNodeID(i)) -} - -func TestQueueIteratorFIFO(t *testing.T) { - t.Parallel() - - testQueueIterator(t, true) -} - -func TestQueueIteratorLIFO(t *testing.T) { - t.Parallel() - - testQueueIterator(t, false) -} - -func testQueueIterator(t *testing.T, fifo bool) { - ns := nodestate.NewNodeStateMachine(nil, nil, &mclock.Simulated{}, testSetup) - qi := NewQueueIterator(ns, sfTest2, sfTest3.Or(sfTest4), fifo, nil) - ns.Start() - for i := 1; i <= iterTestNodeCount; i++ { - ns.SetState(testNode(i), sfTest1, nodestate.Flags{}, 0) - } - next := func() int { - ch := make(chan struct{}) - go func() { - qi.Next() - close(ch) - }() - select { - case <-ch: - case <-time.After(time.Second * 5): - t.Fatalf("Iterator.Next() timeout") - } - node := qi.Node() - ns.SetState(node, sfTest4, nodestate.Flags{}, 0) - return testNodeIndex(node.ID()) - } - exp := func(i int) { - n := next() - if n != i { - t.Errorf("Wrong item returned by iterator (expected %d, got %d)", i, n) - } - } - explist := func(list []int) { - for i := range list { - if fifo { - exp(list[i]) - } else { - exp(list[len(list)-1-i]) - } - } - } - - ns.SetState(testNode(1), sfTest2, nodestate.Flags{}, 0) - ns.SetState(testNode(2), sfTest2, nodestate.Flags{}, 0) - ns.SetState(testNode(3), sfTest2, nodestate.Flags{}, 0) - explist([]int{1, 2, 3}) - ns.SetState(testNode(4), sfTest2, nodestate.Flags{}, 0) - ns.SetState(testNode(5), sfTest2, nodestate.Flags{}, 0) - ns.SetState(testNode(6), sfTest2, nodestate.Flags{}, 0) - ns.SetState(testNode(5), sfTest3, nodestate.Flags{}, 0) - explist([]int{4, 6}) - ns.SetState(testNode(1), nodestate.Flags{}, sfTest4, 0) - ns.SetState(testNode(2), nodestate.Flags{}, sfTest4, 0) - ns.SetState(testNode(3), nodestate.Flags{}, sfTest4, 0) - ns.SetState(testNode(2), sfTest3, nodestate.Flags{}, 0) - ns.SetState(testNode(2), nodestate.Flags{}, sfTest3, 0) - explist([]int{1, 3, 2}) - ns.Stop() -} diff --git a/les/vflux/client/requestbasket.go b/les/vflux/client/requestbasket.go deleted file mode 100644 index 55d4b165df..0000000000 --- a/les/vflux/client/requestbasket.go +++ /dev/null @@ -1,285 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "io" - - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/rlp" -) - -const basketFactor = 1000000 // reference basket amount and value scale factor - -// referenceBasket keeps track of global request usage statistics and the usual prices -// of each used request type relative to each other. The amounts in the basket are scaled -// up by basketFactor because of the exponential expiration of long-term statistical data. -// Values are scaled so that the sum of all amounts and the sum of all values are equal. -// -// reqValues represent the internal relative value estimates for each request type and are -// calculated as value / amount. The average reqValue of all used requests is 1. -// In other words: SUM(refBasket[type].amount * reqValue[type]) = SUM(refBasket[type].amount) -type referenceBasket struct { - basket requestBasket - reqValues []float64 // contents are read only, new slice is created for each update -} - -// serverBasket collects served request amount and value statistics for a single server. -// -// Values are gradually transferred to the global reference basket with a long time -// constant so that each server basket represents long term usage and price statistics. -// When the transferred part is added to the reference basket the values are scaled so -// that their sum equals the total value calculated according to the previous reqValues. -// The ratio of request values coming from the server basket represent the pricing of -// the specific server and modify the global estimates with a weight proportional to -// the amount of service provided by the server. -type serverBasket struct { - basket requestBasket - rvFactor float64 -} - -type ( - // requestBasket holds amounts and values for each request type. - // These values are exponentially expired (see utils.ExpiredValue). The power of 2 - // exponent is applicable to all values within. - requestBasket struct { - items []basketItem - exp uint64 - } - // basketItem holds amount and value for a single request type. Value is the total - // relative request value accumulated for served requests while amount is the counter - // for each request type. - // Note that these values are both scaled up by basketFactor because of the exponential - // expiration. - basketItem struct { - amount, value uint64 - } -) - -// setExp sets the power of 2 exponent of the structure, scaling base values (the amounts -// and request values) up or down if necessary. -func (b *requestBasket) setExp(exp uint64) { - if exp > b.exp { - shift := exp - b.exp - for i, item := range b.items { - item.amount >>= shift - item.value >>= shift - b.items[i] = item - } - b.exp = exp - } - if exp < b.exp { - shift := b.exp - exp - for i, item := range b.items { - item.amount <<= shift - item.value <<= shift - b.items[i] = item - } - b.exp = exp - } -} - -// init initializes a new server basket with the given service vector size (number of -// different request types) -func (s *serverBasket) init(size int) { - if s.basket.items == nil { - s.basket.items = make([]basketItem, size) - } -} - -// add adds the give type and amount of requests to the basket. Cost is calculated -// according to the server's own cost table. -func (s *serverBasket) add(reqType, reqAmount uint32, reqCost uint64, expFactor utils.ExpirationFactor) { - s.basket.setExp(expFactor.Exp) - i := &s.basket.items[reqType] - i.amount += uint64(float64(uint64(reqAmount)*basketFactor) * expFactor.Factor) - i.value += uint64(float64(reqCost) * s.rvFactor * expFactor.Factor) -} - -// updateRvFactor updates the request value factor that scales server costs into the -// local value dimensions. -func (s *serverBasket) updateRvFactor(rvFactor float64) { - s.rvFactor = rvFactor -} - -// transfer decreases amounts and values in the basket with the given ratio and -// moves the removed amounts into a new basket which is returned and can be added -// to the global reference basket. -func (s *serverBasket) transfer(ratio float64) requestBasket { - res := requestBasket{ - items: make([]basketItem, len(s.basket.items)), - exp: s.basket.exp, - } - for i, v := range s.basket.items { - ta := uint64(float64(v.amount) * ratio) - tv := uint64(float64(v.value) * ratio) - if ta > v.amount { - ta = v.amount - } - if tv > v.value { - tv = v.value - } - s.basket.items[i] = basketItem{v.amount - ta, v.value - tv} - res.items[i] = basketItem{ta, tv} - } - return res -} - -// init initializes the reference basket with the given service vector size (number of -// different request types) -func (r *referenceBasket) init(size int) { - r.reqValues = make([]float64, size) - r.normalize() - r.updateReqValues() -} - -// add adds the transferred part of a server basket to the reference basket while scaling -// value amounts so that their sum equals the total value calculated according to the -// previous reqValues. -func (r *referenceBasket) add(newBasket requestBasket) { - r.basket.setExp(newBasket.exp) - // scale newBasket to match service unit value - var ( - totalCost uint64 - totalValue float64 - ) - for i, v := range newBasket.items { - totalCost += v.value - totalValue += float64(v.amount) * r.reqValues[i] - } - if totalCost > 0 { - // add to reference with scaled values - scaleValues := totalValue / float64(totalCost) - for i, v := range newBasket.items { - r.basket.items[i].amount += v.amount - r.basket.items[i].value += uint64(float64(v.value) * scaleValues) - } - } - r.updateReqValues() -} - -// updateReqValues recalculates reqValues after adding transferred baskets. Note that -// values should be normalized first. -func (r *referenceBasket) updateReqValues() { - r.reqValues = make([]float64, len(r.reqValues)) - for i, b := range r.basket.items { - if b.amount > 0 { - r.reqValues[i] = float64(b.value) / float64(b.amount) - } else { - r.reqValues[i] = 0 - } - } -} - -// normalize ensures that the sum of values equal the sum of amounts in the basket. -func (r *referenceBasket) normalize() { - var sumAmount, sumValue uint64 - for _, b := range r.basket.items { - sumAmount += b.amount - sumValue += b.value - } - add := float64(int64(sumAmount-sumValue)) / float64(sumValue) - for i, b := range r.basket.items { - b.value += uint64(int64(float64(b.value) * add)) - r.basket.items[i] = b - } -} - -// reqValueFactor calculates the request value factor applicable to the server with -// the given announced request cost list -func (r *referenceBasket) reqValueFactor(costList []uint64) float64 { - var ( - totalCost float64 - totalValue uint64 - ) - for i, b := range r.basket.items { - totalCost += float64(costList[i]) * float64(b.amount) // use floats to avoid overflow - totalValue += b.value - } - if totalCost < 1 { - return 0 - } - return float64(totalValue) * basketFactor / totalCost -} - -// EncodeRLP implements rlp.Encoder -func (b *basketItem) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, []interface{}{b.amount, b.value}) -} - -// DecodeRLP implements rlp.Decoder -func (b *basketItem) DecodeRLP(s *rlp.Stream) error { - var item struct { - Amount, Value uint64 - } - if err := s.Decode(&item); err != nil { - return err - } - b.amount, b.value = item.Amount, item.Value - return nil -} - -// EncodeRLP implements rlp.Encoder -func (r *requestBasket) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, []interface{}{r.items, r.exp}) -} - -// DecodeRLP implements rlp.Decoder -func (r *requestBasket) DecodeRLP(s *rlp.Stream) error { - var enc struct { - Items []basketItem - Exp uint64 - } - if err := s.Decode(&enc); err != nil { - return err - } - r.items, r.exp = enc.Items, enc.Exp - return nil -} - -// convertMapping converts a basket loaded from the database into the current format. -// If the available request types and their mapping into the service vector differ from -// the one used when saving the basket then this function reorders old fields and fills -// in previously unknown fields by scaling up amounts and values taken from the -// initialization basket. -func (r requestBasket) convertMapping(oldMapping, newMapping []string, initBasket requestBasket) requestBasket { - nameMap := make(map[string]int) - for i, name := range oldMapping { - nameMap[name] = i - } - rc := requestBasket{items: make([]basketItem, len(newMapping))} - var scale, oldScale, newScale float64 - for i, name := range newMapping { - if ii, ok := nameMap[name]; ok { - rc.items[i] = r.items[ii] - oldScale += float64(initBasket.items[i].amount) * float64(initBasket.items[i].amount) - newScale += float64(rc.items[i].amount) * float64(initBasket.items[i].amount) - } - } - if oldScale > 1e-10 { - scale = newScale / oldScale - } else { - scale = 1 - } - for i, name := range newMapping { - if _, ok := nameMap[name]; !ok { - rc.items[i].amount = uint64(float64(initBasket.items[i].amount) * scale) - rc.items[i].value = uint64(float64(initBasket.items[i].value) * scale) - } - } - return rc -} diff --git a/les/vflux/client/requestbasket_test.go b/les/vflux/client/requestbasket_test.go deleted file mode 100644 index 320d1b4b3e..0000000000 --- a/les/vflux/client/requestbasket_test.go +++ /dev/null @@ -1,171 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "math/rand" - "testing" - - "github.com/ethereum/go-ethereum/les/utils" -) - -func checkU64(t *testing.T, name string, value, exp uint64) { - if value != exp { - t.Errorf("Incorrect value for %s: got %d, expected %d", name, value, exp) - } -} - -func checkF64(t *testing.T, name string, value, exp, tol float64) { - if value < exp-tol || value > exp+tol { - t.Errorf("Incorrect value for %s: got %f, expected %f", name, value, exp) - } -} - -func TestServerBasket(t *testing.T) { - t.Parallel() - - var s serverBasket - s.init(2) - // add some requests with different request value factors - s.updateRvFactor(1) - noexp := utils.ExpirationFactor{Factor: 1} - s.add(0, 1000, 10000, noexp) - s.add(1, 3000, 60000, noexp) - s.updateRvFactor(10) - s.add(0, 4000, 4000, noexp) - s.add(1, 2000, 4000, noexp) - s.updateRvFactor(10) - // check basket contents directly - checkU64(t, "s.basket[0].amount", s.basket.items[0].amount, 5000*basketFactor) - checkU64(t, "s.basket[0].value", s.basket.items[0].value, 50000) - checkU64(t, "s.basket[1].amount", s.basket.items[1].amount, 5000*basketFactor) - checkU64(t, "s.basket[1].value", s.basket.items[1].value, 100000) - // transfer 50% of the contents of the basket - transfer1 := s.transfer(0.5) - checkU64(t, "transfer1[0].amount", transfer1.items[0].amount, 2500*basketFactor) - checkU64(t, "transfer1[0].value", transfer1.items[0].value, 25000) - checkU64(t, "transfer1[1].amount", transfer1.items[1].amount, 2500*basketFactor) - checkU64(t, "transfer1[1].value", transfer1.items[1].value, 50000) - // add more requests - s.updateRvFactor(100) - s.add(0, 1000, 100, noexp) - // transfer 25% of the contents of the basket - transfer2 := s.transfer(0.25) - checkU64(t, "transfer2[0].amount", transfer2.items[0].amount, (2500+1000)/4*basketFactor) - checkU64(t, "transfer2[0].value", transfer2.items[0].value, (25000+10000)/4) - checkU64(t, "transfer2[1].amount", transfer2.items[1].amount, 2500/4*basketFactor) - checkU64(t, "transfer2[1].value", transfer2.items[1].value, 50000/4) -} - -func TestConvertMapping(t *testing.T) { - t.Parallel() - - b := requestBasket{items: []basketItem{{3, 3}, {1, 1}, {2, 2}}} - oldMap := []string{"req3", "req1", "req2"} - newMap := []string{"req1", "req2", "req3", "req4"} - init := requestBasket{items: []basketItem{{2, 2}, {4, 4}, {6, 6}, {8, 8}}} - bc := b.convertMapping(oldMap, newMap, init) - checkU64(t, "bc[0].amount", bc.items[0].amount, 1) - checkU64(t, "bc[1].amount", bc.items[1].amount, 2) - checkU64(t, "bc[2].amount", bc.items[2].amount, 3) - checkU64(t, "bc[3].amount", bc.items[3].amount, 4) // 8 should be scaled down to 4 -} - -func TestReqValueFactor(t *testing.T) { - t.Parallel() - - var ref referenceBasket - ref.basket = requestBasket{items: make([]basketItem, 4)} - for i := range ref.basket.items { - ref.basket.items[i].amount = uint64(i+1) * basketFactor - ref.basket.items[i].value = uint64(i+1) * basketFactor - } - ref.init(4) - rvf := ref.reqValueFactor([]uint64{1000, 2000, 3000, 4000}) - // expected value is (1000000+2000000+3000000+4000000) / (1*1000+2*2000+3*3000+4*4000) = 10000000/30000 = 333.333 - checkF64(t, "reqValueFactor", rvf, 333.333, 1) -} - -func TestNormalize(t *testing.T) { - t.Parallel() - - for cycle := 0; cycle < 100; cycle += 1 { - // Initialize data for testing - valueRange, lower := 1000000, 1000000 - ref := referenceBasket{basket: requestBasket{items: make([]basketItem, 10)}} - for i := 0; i < 10; i++ { - ref.basket.items[i].amount = uint64(rand.Intn(valueRange) + lower) - ref.basket.items[i].value = uint64(rand.Intn(valueRange) + lower) - } - ref.normalize() - - // Check whether SUM(amount) ~= SUM(value) - var sumAmount, sumValue uint64 - for i := 0; i < 10; i++ { - sumAmount += ref.basket.items[i].amount - sumValue += ref.basket.items[i].value - } - var epsilon = 0.01 - if float64(sumAmount)*(1+epsilon) < float64(sumValue) || float64(sumAmount)*(1-epsilon) > float64(sumValue) { - t.Fatalf("Failed to normalize sumAmount: %d sumValue: %d", sumAmount, sumValue) - } - } -} - -func TestReqValueAdjustment(t *testing.T) { - t.Parallel() - - var s1, s2 serverBasket - s1.init(3) - s2.init(3) - cost1 := []uint64{30000, 60000, 90000} - cost2 := []uint64{100000, 200000, 300000} - var ref referenceBasket - ref.basket = requestBasket{items: make([]basketItem, 3)} - for i := range ref.basket.items { - ref.basket.items[i].amount = 123 * basketFactor - ref.basket.items[i].value = 123 * basketFactor - } - ref.init(3) - // initial reqValues are expected to be {1, 1, 1} - checkF64(t, "reqValues[0]", ref.reqValues[0], 1, 0.01) - checkF64(t, "reqValues[1]", ref.reqValues[1], 1, 0.01) - checkF64(t, "reqValues[2]", ref.reqValues[2], 1, 0.01) - var logOffset utils.Fixed64 - for period := 0; period < 1000; period++ { - exp := utils.ExpFactor(logOffset) - s1.updateRvFactor(ref.reqValueFactor(cost1)) - s2.updateRvFactor(ref.reqValueFactor(cost2)) - // throw in random requests into each basket using their internal pricing - for i := 0; i < 1000; i++ { - reqType, reqAmount := uint32(rand.Intn(3)), uint32(rand.Intn(10)+1) - reqCost := uint64(reqAmount) * cost1[reqType] - s1.add(reqType, reqAmount, reqCost, exp) - reqType, reqAmount = uint32(rand.Intn(3)), uint32(rand.Intn(10)+1) - reqCost = uint64(reqAmount) * cost2[reqType] - s2.add(reqType, reqAmount, reqCost, exp) - } - ref.add(s1.transfer(0.1)) - ref.add(s2.transfer(0.1)) - ref.normalize() - ref.updateReqValues() - logOffset += utils.Float64ToFixed64(0.1) - } - checkF64(t, "reqValues[0]", ref.reqValues[0], 0.5, 0.01) - checkF64(t, "reqValues[1]", ref.reqValues[1], 1, 0.01) - checkF64(t, "reqValues[2]", ref.reqValues[2], 1.5, 0.01) -} diff --git a/les/vflux/client/serverpool.go b/les/vflux/client/serverpool.go deleted file mode 100644 index 271d6e0224..0000000000 --- a/les/vflux/client/serverpool.go +++ /dev/null @@ -1,605 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "errors" - "math/rand" - "reflect" - "sync" - "sync/atomic" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/metrics" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/p2p/nodestate" - "github.com/ethereum/go-ethereum/rlp" -) - -const ( - minTimeout = time.Millisecond * 500 // minimum request timeout suggested by the server pool - timeoutRefresh = time.Second * 5 // recalculate timeout if older than this - dialCost = 10000 // cost of a TCP dial (used for known node selection weight calculation) - dialWaitStep = 1.5 // exponential multiplier of redial wait time when no value was provided by the server - queryCost = 500 // cost of a UDP pre-negotiation query - queryWaitStep = 1.02 // exponential multiplier of redial wait time when no value was provided by the server - waitThreshold = time.Hour * 2000 // drop node if waiting time is over the threshold - nodeWeightMul = 1000000 // multiplier constant for node weight calculation - nodeWeightThreshold = 100 // minimum weight for keeping a node in the known (valuable) set - minRedialWait = 10 // minimum redial wait time in seconds - preNegLimit = 5 // maximum number of simultaneous pre-negotiation queries - warnQueryFails = 20 // number of consecutive UDP query failures before we print a warning - maxQueryFails = 100 // number of consecutive UDP query failures when then chance of skipping a query reaches 50% -) - -// ServerPool provides a node iterator for dial candidates. The output is a mix of newly discovered -// nodes, a weighted random selection of known (previously valuable) nodes and trusted/paid nodes. -type ServerPool struct { - clock mclock.Clock - unixTime func() int64 - db ethdb.KeyValueStore - - ns *nodestate.NodeStateMachine - vt *ValueTracker - mixer *enode.FairMix - mixSources []enode.Iterator - dialIterator enode.Iterator - validSchemes enr.IdentityScheme - trustedURLs []string - fillSet *FillSet - started, queryFails uint32 - - timeoutLock sync.RWMutex - timeout time.Duration - timeWeights ResponseTimeWeights - timeoutRefreshed mclock.AbsTime - - suggestedTimeoutGauge, totalValueGauge metrics.Gauge - sessionValueMeter metrics.Meter -} - -// nodeHistory keeps track of dial costs which determine node weight together with the -// service value calculated by ValueTracker. -type nodeHistory struct { - dialCost utils.ExpiredValue - redialWaitStart, redialWaitEnd int64 // unix time (seconds) -} - -type nodeHistoryEnc struct { - DialCost utils.ExpiredValue - RedialWaitStart, RedialWaitEnd uint64 -} - -// QueryFunc sends a pre-negotiation query and blocks until a response arrives or timeout occurs. -// It returns 1 if the remote node has confirmed that connection is possible, 0 if not -// possible and -1 if no response arrived (timeout). -type QueryFunc func(*enode.Node) int - -var ( - clientSetup = &nodestate.Setup{Version: 2} - sfHasValue = clientSetup.NewPersistentFlag("hasValue") - sfQuery = clientSetup.NewFlag("query") - sfCanDial = clientSetup.NewFlag("canDial") - sfDialing = clientSetup.NewFlag("dialed") - sfWaitDialTimeout = clientSetup.NewFlag("dialTimeout") - sfConnected = clientSetup.NewFlag("connected") - sfRedialWait = clientSetup.NewFlag("redialWait") - sfAlwaysConnect = clientSetup.NewFlag("alwaysConnect") - sfDialProcess = nodestate.MergeFlags(sfQuery, sfCanDial, sfDialing, sfConnected, sfRedialWait) - - sfiNodeHistory = clientSetup.NewPersistentField("nodeHistory", reflect.TypeOf(nodeHistory{}), - func(field interface{}) ([]byte, error) { - if n, ok := field.(nodeHistory); ok { - ne := nodeHistoryEnc{ - DialCost: n.dialCost, - RedialWaitStart: uint64(n.redialWaitStart), - RedialWaitEnd: uint64(n.redialWaitEnd), - } - enc, err := rlp.EncodeToBytes(&ne) - return enc, err - } - return nil, errors.New("invalid field type") - }, - func(enc []byte) (interface{}, error) { - var ne nodeHistoryEnc - err := rlp.DecodeBytes(enc, &ne) - n := nodeHistory{ - dialCost: ne.DialCost, - redialWaitStart: int64(ne.RedialWaitStart), - redialWaitEnd: int64(ne.RedialWaitEnd), - } - return n, err - }, - ) - sfiNodeWeight = clientSetup.NewField("nodeWeight", reflect.TypeOf(uint64(0))) - sfiConnectedStats = clientSetup.NewField("connectedStats", reflect.TypeOf(ResponseTimeStats{})) - sfiLocalAddress = clientSetup.NewPersistentField("localAddress", reflect.TypeOf(&enr.Record{}), - func(field interface{}) ([]byte, error) { - if enr, ok := field.(*enr.Record); ok { - enc, err := rlp.EncodeToBytes(enr) - return enc, err - } - return nil, errors.New("invalid field type") - }, - func(enc []byte) (interface{}, error) { - var enr enr.Record - if err := rlp.DecodeBytes(enc, &enr); err != nil { - return nil, err - } - return &enr, nil - }, - ) -) - -// NewServerPool creates a new server pool -func NewServerPool(db ethdb.KeyValueStore, dbKey []byte, mixTimeout time.Duration, query QueryFunc, clock mclock.Clock, trustedURLs []string, requestList []RequestInfo) (*ServerPool, enode.Iterator) { - s := &ServerPool{ - db: db, - clock: clock, - unixTime: func() int64 { return time.Now().Unix() }, - validSchemes: enode.ValidSchemes, - trustedURLs: trustedURLs, - vt: NewValueTracker(db, &mclock.System{}, requestList, time.Minute, 1/float64(time.Hour), 1/float64(time.Hour*100), 1/float64(time.Hour*1000)), - ns: nodestate.NewNodeStateMachine(db, []byte(string(dbKey)+"ns:"), clock, clientSetup), - } - s.recalTimeout() - s.mixer = enode.NewFairMix(mixTimeout) - knownSelector := NewWrsIterator(s.ns, sfHasValue, sfDialProcess, sfiNodeWeight) - alwaysConnect := NewQueueIterator(s.ns, sfAlwaysConnect, sfDialProcess, true, nil) - s.mixSources = append(s.mixSources, knownSelector) - s.mixSources = append(s.mixSources, alwaysConnect) - - s.dialIterator = s.mixer - if query != nil { - s.dialIterator = s.addPreNegFilter(s.dialIterator, query) - } - - s.ns.SubscribeState(nodestate.MergeFlags(sfWaitDialTimeout, sfConnected), func(n *enode.Node, oldState, newState nodestate.Flags) { - if oldState.Equals(sfWaitDialTimeout) && newState.IsEmpty() { - // dial timeout, no connection - s.setRedialWait(n, dialCost, dialWaitStep) - s.ns.SetStateSub(n, nodestate.Flags{}, sfDialing, 0) - } - }) - - return s, &serverPoolIterator{ - dialIterator: s.dialIterator, - nextFn: func(node *enode.Node) { - s.ns.Operation(func() { - s.ns.SetStateSub(node, sfDialing, sfCanDial, 0) - s.ns.SetStateSub(node, sfWaitDialTimeout, nodestate.Flags{}, time.Second*10) - }) - }, - nodeFn: s.DialNode, - } -} - -type serverPoolIterator struct { - dialIterator enode.Iterator - nextFn func(*enode.Node) - nodeFn func(*enode.Node) *enode.Node -} - -// Next implements enode.Iterator -func (s *serverPoolIterator) Next() bool { - if s.dialIterator.Next() { - s.nextFn(s.dialIterator.Node()) - return true - } - return false -} - -// Node implements enode.Iterator -func (s *serverPoolIterator) Node() *enode.Node { - return s.nodeFn(s.dialIterator.Node()) -} - -// Close implements enode.Iterator -func (s *serverPoolIterator) Close() { - s.dialIterator.Close() -} - -// AddMetrics adds metrics to the server pool. Should be called before Start(). -func (s *ServerPool) AddMetrics( - suggestedTimeoutGauge, totalValueGauge, serverSelectableGauge, serverConnectedGauge metrics.Gauge, - sessionValueMeter, serverDialedMeter metrics.Meter) { - s.suggestedTimeoutGauge = suggestedTimeoutGauge - s.totalValueGauge = totalValueGauge - s.sessionValueMeter = sessionValueMeter - if serverSelectableGauge != nil { - s.ns.AddLogMetrics(sfHasValue, sfDialProcess, "selectable", nil, nil, serverSelectableGauge) - } - if serverDialedMeter != nil { - s.ns.AddLogMetrics(sfDialing, nodestate.Flags{}, "dialed", serverDialedMeter, nil, nil) - } - if serverConnectedGauge != nil { - s.ns.AddLogMetrics(sfConnected, nodestate.Flags{}, "connected", nil, nil, serverConnectedGauge) - } -} - -// AddSource adds a node discovery source to the server pool (should be called before start) -func (s *ServerPool) AddSource(source enode.Iterator) { - if source != nil { - s.mixSources = append(s.mixSources, source) - } -} - -// addPreNegFilter installs a node filter mechanism that performs a pre-negotiation query. -// Nodes that are filtered out and does not appear on the output iterator are put back -// into redialWait state. -func (s *ServerPool) addPreNegFilter(input enode.Iterator, query QueryFunc) enode.Iterator { - s.fillSet = NewFillSet(s.ns, input, sfQuery) - s.ns.SubscribeState(sfDialProcess, func(n *enode.Node, oldState, newState nodestate.Flags) { - if !newState.Equals(sfQuery) { - if newState.HasAll(sfQuery) { - // remove query flag if the node is already somewhere in the dial process - s.ns.SetStateSub(n, nodestate.Flags{}, sfQuery, 0) - } - return - } - fails := atomic.LoadUint32(&s.queryFails) - failMax := fails - if failMax > maxQueryFails { - failMax = maxQueryFails - } - if rand.Intn(maxQueryFails*2) < int(failMax) { - // skip pre-negotiation with increasing chance, max 50% - // this ensures that the client can operate even if UDP is not working at all - s.ns.SetStateSub(n, sfCanDial, nodestate.Flags{}, time.Second*10) - // set canDial before resetting queried so that FillSet will not read more - // candidates unnecessarily - s.ns.SetStateSub(n, nodestate.Flags{}, sfQuery, 0) - return - } - go func() { - q := query(n) - if q == -1 { - atomic.AddUint32(&s.queryFails, 1) - fails++ - if fails%warnQueryFails == 0 { - // warn if a large number of consecutive queries have failed - log.Warn("UDP connection queries failed", "count", fails) - } - } else { - atomic.StoreUint32(&s.queryFails, 0) - } - s.ns.Operation(func() { - // we are no longer running in the operation that the callback belongs to, start a new one because of setRedialWait - if q == 1 { - s.ns.SetStateSub(n, sfCanDial, nodestate.Flags{}, time.Second*10) - } else { - s.setRedialWait(n, queryCost, queryWaitStep) - } - s.ns.SetStateSub(n, nodestate.Flags{}, sfQuery, 0) - }) - }() - }) - return NewQueueIterator(s.ns, sfCanDial, nodestate.Flags{}, false, func(waiting bool) { - if waiting { - s.fillSet.SetTarget(preNegLimit) - } else { - s.fillSet.SetTarget(0) - } - }) -} - -// Start starts the server pool. Note that NodeStateMachine should be started first. -func (s *ServerPool) Start() { - s.ns.Start() - for _, iter := range s.mixSources { - // add sources to mixer at startup because the mixer instantly tries to read them - // which should only happen after NodeStateMachine has been started - s.mixer.AddSource(iter) - } - for _, url := range s.trustedURLs { - if node, err := enode.Parse(s.validSchemes, url); err == nil { - s.ns.SetState(node, sfAlwaysConnect, nodestate.Flags{}, 0) - } else { - log.Error("Invalid trusted server URL", "url", url, "error", err) - } - } - unixTime := s.unixTime() - s.ns.Operation(func() { - s.ns.ForEach(sfHasValue, nodestate.Flags{}, func(node *enode.Node, state nodestate.Flags) { - s.calculateWeight(node) - if n, ok := s.ns.GetField(node, sfiNodeHistory).(nodeHistory); ok && n.redialWaitEnd > unixTime { - wait := n.redialWaitEnd - unixTime - lastWait := n.redialWaitEnd - n.redialWaitStart - if wait > lastWait { - // if the time until expiration is larger than the last suggested - // waiting time then the system clock was probably adjusted - wait = lastWait - } - s.ns.SetStateSub(node, sfRedialWait, nodestate.Flags{}, time.Duration(wait)*time.Second) - } - }) - }) - atomic.StoreUint32(&s.started, 1) -} - -// Stop stops the server pool -func (s *ServerPool) Stop() { - if s.fillSet != nil { - s.fillSet.Close() - } - s.ns.Operation(func() { - s.ns.ForEach(sfConnected, nodestate.Flags{}, func(n *enode.Node, state nodestate.Flags) { - // recalculate weight of connected nodes in order to update hasValue flag if necessary - s.calculateWeight(n) - }) - }) - s.ns.Stop() - s.vt.Stop() -} - -// RegisterNode implements serverPeerSubscriber -func (s *ServerPool) RegisterNode(node *enode.Node) (*NodeValueTracker, error) { - if atomic.LoadUint32(&s.started) == 0 { - return nil, errors.New("server pool not started yet") - } - nvt := s.vt.Register(node.ID()) - s.ns.Operation(func() { - s.ns.SetStateSub(node, sfConnected, sfDialing.Or(sfWaitDialTimeout), 0) - s.ns.SetFieldSub(node, sfiConnectedStats, nvt.RtStats()) - if node.IP().IsLoopback() { - s.ns.SetFieldSub(node, sfiLocalAddress, node.Record()) - } - }) - return nvt, nil -} - -// UnregisterNode implements serverPeerSubscriber -func (s *ServerPool) UnregisterNode(node *enode.Node) { - s.ns.Operation(func() { - s.setRedialWait(node, dialCost, dialWaitStep) - s.ns.SetStateSub(node, nodestate.Flags{}, sfConnected, 0) - s.ns.SetFieldSub(node, sfiConnectedStats, nil) - }) - s.vt.Unregister(node.ID()) -} - -// recalTimeout calculates the current recommended timeout. This value is used by -// the client as a "soft timeout" value. It also affects the service value calculation -// of individual nodes. -func (s *ServerPool) recalTimeout() { - // Use cached result if possible, avoid recalculating too frequently. - s.timeoutLock.RLock() - refreshed := s.timeoutRefreshed - s.timeoutLock.RUnlock() - now := s.clock.Now() - if refreshed != 0 && time.Duration(now-refreshed) < timeoutRefresh { - return - } - // Cached result is stale, recalculate a new one. - rts := s.vt.RtStats() - - // Add a fake statistic here. It is an easy way to initialize with some - // conservative values when the database is new. As soon as we have a - // considerable amount of real stats this small value won't matter. - rts.Add(time.Second*2, 10, s.vt.StatsExpFactor()) - - // Use either 10% failure rate timeout or twice the median response time - // as the recommended timeout. - timeout := minTimeout - if t := rts.Timeout(0.1); t > timeout { - timeout = t - } - if t := rts.Timeout(0.5) * 2; t > timeout { - timeout = t - } - s.timeoutLock.Lock() - if s.timeout != timeout { - s.timeout = timeout - s.timeWeights = TimeoutWeights(s.timeout) - - if s.suggestedTimeoutGauge != nil { - s.suggestedTimeoutGauge.Update(int64(s.timeout / time.Millisecond)) - } - if s.totalValueGauge != nil { - s.totalValueGauge.Update(int64(rts.Value(s.timeWeights, s.vt.StatsExpFactor()))) - } - } - s.timeoutRefreshed = now - s.timeoutLock.Unlock() -} - -// GetTimeout returns the recommended request timeout. -func (s *ServerPool) GetTimeout() time.Duration { - s.recalTimeout() - s.timeoutLock.RLock() - defer s.timeoutLock.RUnlock() - return s.timeout -} - -// getTimeoutAndWeight returns the recommended request timeout as well as the -// response time weight which is necessary to calculate service value. -func (s *ServerPool) getTimeoutAndWeight() (time.Duration, ResponseTimeWeights) { - s.recalTimeout() - s.timeoutLock.RLock() - defer s.timeoutLock.RUnlock() - return s.timeout, s.timeWeights -} - -// addDialCost adds the given amount of dial cost to the node history and returns the current -// amount of total dial cost -func (s *ServerPool) addDialCost(n *nodeHistory, amount int64) uint64 { - logOffset := s.vt.StatsExpirer().LogOffset(s.clock.Now()) - if amount > 0 { - n.dialCost.Add(amount, logOffset) - } - totalDialCost := n.dialCost.Value(logOffset) - if totalDialCost < dialCost { - totalDialCost = dialCost - } - return totalDialCost -} - -// serviceValue returns the service value accumulated in this session and in total -func (s *ServerPool) serviceValue(node *enode.Node) (sessionValue, totalValue float64) { - nvt := s.vt.GetNode(node.ID()) - if nvt == nil { - return 0, 0 - } - currentStats := nvt.RtStats() - _, timeWeights := s.getTimeoutAndWeight() - expFactor := s.vt.StatsExpFactor() - - totalValue = currentStats.Value(timeWeights, expFactor) - if connStats, ok := s.ns.GetField(node, sfiConnectedStats).(ResponseTimeStats); ok { - diff := currentStats - diff.SubStats(&connStats) - sessionValue = diff.Value(timeWeights, expFactor) - if s.sessionValueMeter != nil { - s.sessionValueMeter.Mark(int64(sessionValue)) - } - } - return -} - -// updateWeight calculates the node weight and updates the nodeWeight field and the -// hasValue flag. It also saves the node state if necessary. -// Note: this function should run inside a NodeStateMachine operation -func (s *ServerPool) updateWeight(node *enode.Node, totalValue float64, totalDialCost uint64) { - weight := uint64(totalValue * nodeWeightMul / float64(totalDialCost)) - if weight >= nodeWeightThreshold { - s.ns.SetStateSub(node, sfHasValue, nodestate.Flags{}, 0) - s.ns.SetFieldSub(node, sfiNodeWeight, weight) - } else { - s.ns.SetStateSub(node, nodestate.Flags{}, sfHasValue, 0) - s.ns.SetFieldSub(node, sfiNodeWeight, nil) - s.ns.SetFieldSub(node, sfiNodeHistory, nil) - s.ns.SetFieldSub(node, sfiLocalAddress, nil) - } - s.ns.Persist(node) // saved if node history or hasValue changed -} - -// setRedialWait calculates and sets the redialWait timeout based on the service value -// and dial cost accumulated during the last session/attempt and in total. -// The waiting time is raised exponentially if no service value has been received in order -// to prevent dialing an unresponsive node frequently for a very long time just because it -// was useful in the past. It can still be occasionally dialed though and once it provides -// a significant amount of service value again its waiting time is quickly reduced or reset -// to the minimum. -// Note: node weight is also recalculated and updated by this function. -// Note 2: this function should run inside a NodeStateMachine operation -func (s *ServerPool) setRedialWait(node *enode.Node, addDialCost int64, waitStep float64) { - n, _ := s.ns.GetField(node, sfiNodeHistory).(nodeHistory) - sessionValue, totalValue := s.serviceValue(node) - totalDialCost := s.addDialCost(&n, addDialCost) - - // if the current dial session has yielded at least the average value/dial cost ratio - // then the waiting time should be reset to the minimum. If the session value - // is below average but still positive then timeout is limited to the ratio of - // average / current service value multiplied by the minimum timeout. If the attempt - // was unsuccessful then timeout is raised exponentially without limitation. - // Note: dialCost is used in the formula below even if dial was not attempted at all - // because the pre-negotiation query did not return a positive result. In this case - // the ratio has no meaning anyway and waitFactor is always raised, though in smaller - // steps because queries are cheaper and therefore we can allow more failed attempts. - unixTime := s.unixTime() - plannedTimeout := float64(n.redialWaitEnd - n.redialWaitStart) // last planned redialWait timeout - var actualWait float64 // actual waiting time elapsed - if unixTime > n.redialWaitEnd { - // the planned timeout has elapsed - actualWait = plannedTimeout - } else { - // if the node was redialed earlier then we do not raise the planned timeout - // exponentially because that could lead to the timeout rising very high in - // a short amount of time - // Note that in case of an early redial actualWait also includes the dial - // timeout or connection time of the last attempt but it still serves its - // purpose of preventing the timeout rising quicker than linearly as a function - // of total time elapsed without a successful connection. - actualWait = float64(unixTime - n.redialWaitStart) - } - // raise timeout exponentially if the last planned timeout has elapsed - // (use at least the last planned timeout otherwise) - nextTimeout := actualWait * waitStep - if plannedTimeout > nextTimeout { - nextTimeout = plannedTimeout - } - // we reduce the waiting time if the server has provided service value during the - // connection (but never under the minimum) - a := totalValue * dialCost * float64(minRedialWait) - b := float64(totalDialCost) * sessionValue - if a < b*nextTimeout { - nextTimeout = a / b - } - if nextTimeout < minRedialWait { - nextTimeout = minRedialWait - } - wait := time.Duration(float64(time.Second) * nextTimeout) - if wait < waitThreshold { - n.redialWaitStart = unixTime - n.redialWaitEnd = unixTime + int64(nextTimeout) - s.ns.SetFieldSub(node, sfiNodeHistory, n) - s.ns.SetStateSub(node, sfRedialWait, nodestate.Flags{}, wait) - s.updateWeight(node, totalValue, totalDialCost) - } else { - // discard known node statistics if waiting time is very long because the node - // hasn't been responsive for a very long time - s.ns.SetFieldSub(node, sfiNodeHistory, nil) - s.ns.SetFieldSub(node, sfiNodeWeight, nil) - s.ns.SetStateSub(node, nodestate.Flags{}, sfHasValue, 0) - } -} - -// calculateWeight calculates and sets the node weight without altering the node history. -// This function should be called during startup and shutdown only, otherwise setRedialWait -// will keep the weights updated as the underlying statistics are adjusted. -// Note: this function should run inside a NodeStateMachine operation -func (s *ServerPool) calculateWeight(node *enode.Node) { - n, _ := s.ns.GetField(node, sfiNodeHistory).(nodeHistory) - _, totalValue := s.serviceValue(node) - totalDialCost := s.addDialCost(&n, 0) - s.updateWeight(node, totalValue, totalDialCost) -} - -// API returns the vflux client API -func (s *ServerPool) API() *PrivateClientAPI { - return NewPrivateClientAPI(s.vt) -} - -type dummyIdentity enode.ID - -func (id dummyIdentity) Verify(r *enr.Record, sig []byte) error { return nil } -func (id dummyIdentity) NodeAddr(r *enr.Record) []byte { return id[:] } - -// DialNode replaces the given enode with a locally generated one containing the ENR -// stored in the sfiLocalAddress field if present. This workaround ensures that nodes -// on the local network can be dialed at the local address if a connection has been -// successfully established previously. -// Note that NodeStateMachine always remembers the enode with the latest version of -// the remote signed ENR. ENR filtering should be performed on that version while -// dialNode should be used for dialing the node over TCP or UDP. -func (s *ServerPool) DialNode(n *enode.Node) *enode.Node { - if enr, ok := s.ns.GetField(n, sfiLocalAddress).(*enr.Record); ok { - n, _ := enode.New(dummyIdentity(n.ID()), enr) - return n - } - return n -} - -// Persist immediately stores the state of a node in the node database -func (s *ServerPool) Persist(n *enode.Node) { - s.ns.Persist(n) -} diff --git a/les/vflux/client/serverpool_test.go b/les/vflux/client/serverpool_test.go deleted file mode 100644 index 19d4fe6630..0000000000 --- a/les/vflux/client/serverpool_test.go +++ /dev/null @@ -1,424 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "math/rand" - "strconv" - "sync" - "sync/atomic" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/ethdb/memorydb" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" -) - -const ( - spTestNodes = 1000 - spTestTarget = 5 - spTestLength = 10000 - spMinTotal = 40000 - spMaxTotal = 50000 -) - -func testNodeID(i int) enode.ID { - return enode.ID{42, byte(i % 256), byte(i / 256)} -} - -func testNodeIndex(id enode.ID) int { - if id[0] != 42 { - return -1 - } - return int(id[1]) + int(id[2])*256 -} - -type ServerPoolTest struct { - db ethdb.KeyValueStore - clock *mclock.Simulated - quit chan chan struct{} - preNeg, preNegFail bool - sp *ServerPool - spi enode.Iterator - input enode.Iterator - testNodes []spTestNode - trusted []string - waitCount, waitEnded int32 - - // preNegLock protects the cycle counter, testNodes list and its connected field - // (accessed from both the main thread and the preNeg callback) - preNegLock sync.Mutex - queryWg *sync.WaitGroup // a new wait group is created each time the simulation is started - stopping bool // stopping avoid calling queryWg.Add after queryWg.Wait - - cycle, conn, servedConn int - serviceCycles, dialCount int - disconnect map[int][]int -} - -type spTestNode struct { - connectCycles, waitCycles int - nextConnCycle, totalConn int - connected, service bool - node *enode.Node -} - -func newServerPoolTest(preNeg, preNegFail bool) *ServerPoolTest { - nodes := make([]*enode.Node, spTestNodes) - for i := range nodes { - nodes[i] = enode.SignNull(&enr.Record{}, testNodeID(i)) - } - return &ServerPoolTest{ - clock: &mclock.Simulated{}, - db: memorydb.New(), - input: enode.CycleNodes(nodes), - testNodes: make([]spTestNode, spTestNodes), - preNeg: preNeg, - preNegFail: preNegFail, - } -} - -func (s *ServerPoolTest) beginWait() { - // ensure that dialIterator and the maximal number of pre-neg queries are not all stuck in a waiting state - for atomic.AddInt32(&s.waitCount, 1) > preNegLimit { - atomic.AddInt32(&s.waitCount, -1) - s.clock.Run(time.Second) - } -} - -func (s *ServerPoolTest) endWait() { - atomic.AddInt32(&s.waitCount, -1) - atomic.AddInt32(&s.waitEnded, 1) -} - -func (s *ServerPoolTest) addTrusted(i int) { - s.trusted = append(s.trusted, enode.SignNull(&enr.Record{}, testNodeID(i)).String()) -} - -func (s *ServerPoolTest) start() { - var testQuery QueryFunc - s.queryWg = new(sync.WaitGroup) - if s.preNeg { - testQuery = func(node *enode.Node) int { - s.preNegLock.Lock() - if s.stopping { - s.preNegLock.Unlock() - return 0 - } - s.queryWg.Add(1) - idx := testNodeIndex(node.ID()) - n := &s.testNodes[idx] - canConnect := !n.connected && n.connectCycles != 0 && s.cycle >= n.nextConnCycle - s.preNegLock.Unlock() - defer s.queryWg.Done() - - if s.preNegFail { - // simulate a scenario where UDP queries never work - s.beginWait() - s.clock.Sleep(time.Second * 5) - s.endWait() - return -1 - } - switch idx % 3 { - case 0: - // pre-neg returns true only if connection is possible - if canConnect { - return 1 - } - return 0 - case 1: - // pre-neg returns true but connection might still fail - return 1 - case 2: - // pre-neg returns true if connection is possible, otherwise timeout (node unresponsive) - if canConnect { - return 1 - } - s.beginWait() - s.clock.Sleep(time.Second * 5) - s.endWait() - return -1 - } - return -1 - } - } - - requestList := make([]RequestInfo, testReqTypes) - for i := range requestList { - requestList[i] = RequestInfo{Name: "testreq" + strconv.Itoa(i), InitAmount: 1, InitValue: 1} - } - - s.sp, s.spi = NewServerPool(s.db, []byte("sp:"), 0, testQuery, s.clock, s.trusted, requestList) - s.sp.AddSource(s.input) - s.sp.validSchemes = enode.ValidSchemesForTesting - s.sp.unixTime = func() int64 { return int64(s.clock.Now()) / int64(time.Second) } - s.disconnect = make(map[int][]int) - s.sp.Start() - s.quit = make(chan chan struct{}) - go func() { - last := int32(-1) - for { - select { - case <-time.After(time.Millisecond * 100): - c := atomic.LoadInt32(&s.waitEnded) - if c == last { - // advance clock if test is stuck (might happen in rare cases) - s.clock.Run(time.Second) - } - last = c - case quit := <-s.quit: - close(quit) - return - } - } - }() -} - -func (s *ServerPoolTest) stop() { - // disable further queries and wait if one is currently running - s.preNegLock.Lock() - s.stopping = true - s.preNegLock.Unlock() - s.queryWg.Wait() - - quit := make(chan struct{}) - s.quit <- quit - <-quit - s.sp.Stop() - s.spi.Close() - s.preNegLock.Lock() - s.stopping = false - s.preNegLock.Unlock() - for i := range s.testNodes { - n := &s.testNodes[i] - if n.connected { - n.totalConn += s.cycle - } - n.connected = false - n.node = nil - n.nextConnCycle = 0 - } - s.conn, s.servedConn = 0, 0 -} - -func (s *ServerPoolTest) run() { - for count := spTestLength; count > 0; count-- { - if dcList := s.disconnect[s.cycle]; dcList != nil { - for _, idx := range dcList { - n := &s.testNodes[idx] - s.sp.UnregisterNode(n.node) - n.totalConn += s.cycle - s.preNegLock.Lock() - n.connected = false - s.preNegLock.Unlock() - n.node = nil - s.conn-- - if n.service { - s.servedConn-- - } - n.nextConnCycle = s.cycle + n.waitCycles - } - delete(s.disconnect, s.cycle) - } - if s.conn < spTestTarget { - s.dialCount++ - s.beginWait() - s.spi.Next() - s.endWait() - dial := s.spi.Node() - id := dial.ID() - idx := testNodeIndex(id) - n := &s.testNodes[idx] - if !n.connected && n.connectCycles != 0 && s.cycle >= n.nextConnCycle { - s.conn++ - if n.service { - s.servedConn++ - } - n.totalConn -= s.cycle - s.preNegLock.Lock() - n.connected = true - s.preNegLock.Unlock() - dc := s.cycle + n.connectCycles - s.disconnect[dc] = append(s.disconnect[dc], idx) - n.node = dial - nv, _ := s.sp.RegisterNode(n.node) - if n.service { - nv.Served([]ServedRequest{{ReqType: 0, Amount: 100}}, 0) - } - } - } - s.serviceCycles += s.servedConn - s.clock.Run(time.Second) - s.preNegLock.Lock() - s.cycle++ - s.preNegLock.Unlock() - } -} - -func (s *ServerPoolTest) setNodes(count, conn, wait int, service, trusted bool) (res []int) { - for ; count > 0; count-- { - idx := rand.Intn(spTestNodes) - for s.testNodes[idx].connectCycles != 0 || s.testNodes[idx].connected { - idx = rand.Intn(spTestNodes) - } - res = append(res, idx) - s.preNegLock.Lock() - s.testNodes[idx] = spTestNode{ - connectCycles: conn, - waitCycles: wait, - service: service, - } - s.preNegLock.Unlock() - if trusted { - s.addTrusted(idx) - } - } - return -} - -func (s *ServerPoolTest) resetNodes() { - for i, n := range s.testNodes { - if n.connected { - n.totalConn += s.cycle - s.sp.UnregisterNode(n.node) - } - s.preNegLock.Lock() - s.testNodes[i] = spTestNode{totalConn: n.totalConn} - s.preNegLock.Unlock() - } - s.conn, s.servedConn = 0, 0 - s.disconnect = make(map[int][]int) - s.trusted = nil -} - -func (s *ServerPoolTest) checkNodes(t *testing.T, nodes []int) { - var sum int - for _, idx := range nodes { - n := &s.testNodes[idx] - if n.connected { - n.totalConn += s.cycle - } - sum += n.totalConn - n.totalConn = 0 - if n.connected { - n.totalConn -= s.cycle - } - } - if sum < spMinTotal || sum > spMaxTotal { - t.Errorf("Total connection amount %d outside expected range %d to %d", sum, spMinTotal, spMaxTotal) - } -} - -func TestServerPool(t *testing.T) { - t.Parallel() - - testServerPool(t, false, false) -} -func TestServerPoolWithPreNeg(t *testing.T) { - t.Parallel() - - testServerPool(t, true, false) -} -func TestServerPoolWithPreNegFail(t *testing.T) { - t.Parallel() - - testServerPool(t, true, true) -} -func testServerPool(t *testing.T, preNeg, fail bool) { - s := newServerPoolTest(preNeg, fail) - nodes := s.setNodes(100, 200, 200, true, false) - s.setNodes(100, 20, 20, false, false) - s.start() - s.run() - s.stop() - s.checkNodes(t, nodes) -} - -func TestServerPoolChangedNodes(t *testing.T) { - t.Parallel() - - testServerPoolChangedNodes(t, false) -} -func TestServerPoolChangedNodesWithPreNeg(t *testing.T) { - t.Parallel() - - testServerPoolChangedNodes(t, true) -} -func testServerPoolChangedNodes(t *testing.T, preNeg bool) { - s := newServerPoolTest(preNeg, false) - nodes := s.setNodes(100, 200, 200, true, false) - s.setNodes(100, 20, 20, false, false) - s.start() - s.run() - s.checkNodes(t, nodes) - for i := 0; i < 3; i++ { - s.resetNodes() - nodes := s.setNodes(100, 200, 200, true, false) - s.setNodes(100, 20, 20, false, false) - s.run() - s.checkNodes(t, nodes) - } - s.stop() -} - -func TestServerPoolRestartNoDiscovery(t *testing.T) { - t.Parallel() - - testServerPoolRestartNoDiscovery(t, false) -} -func TestServerPoolRestartNoDiscoveryWithPreNeg(t *testing.T) { - t.Parallel() - - testServerPoolRestartNoDiscovery(t, true) -} -func testServerPoolRestartNoDiscovery(t *testing.T, preNeg bool) { - s := newServerPoolTest(preNeg, false) - nodes := s.setNodes(100, 200, 200, true, false) - s.setNodes(100, 20, 20, false, false) - s.start() - s.run() - s.stop() - s.checkNodes(t, nodes) - s.input = nil - s.start() - s.run() - s.stop() - s.checkNodes(t, nodes) -} - -func TestServerPoolTrustedNoDiscovery(t *testing.T) { - t.Parallel() - - testServerPoolTrustedNoDiscovery(t, false) -} -func TestServerPoolTrustedNoDiscoveryWithPreNeg(t *testing.T) { - t.Parallel() - - testServerPoolTrustedNoDiscovery(t, true) -} -func testServerPoolTrustedNoDiscovery(t *testing.T, preNeg bool) { - s := newServerPoolTest(preNeg, false) - trusted := s.setNodes(200, 200, 200, true, true) - s.input = nil - s.start() - s.run() - s.stop() - s.checkNodes(t, trusted) -} diff --git a/les/vflux/client/timestats.go b/les/vflux/client/timestats.go deleted file mode 100644 index 7f1ffdbe26..0000000000 --- a/les/vflux/client/timestats.go +++ /dev/null @@ -1,237 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "io" - "math" - "time" - - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/rlp" -) - -const ( - minResponseTime = time.Millisecond * 50 - maxResponseTime = time.Second * 10 - timeStatLength = 32 - weightScaleFactor = 1000000 -) - -// ResponseTimeStats is the response time distribution of a set of answered requests, -// weighted with request value, either served by a single server or aggregated for -// multiple servers. -// It it a fixed length (timeStatLength) distribution vector with linear interpolation. -// The X axis (the time values) are not linear, they should be transformed with -// TimeToStatScale and StatScaleToTime. -type ( - ResponseTimeStats struct { - stats [timeStatLength]uint64 - exp uint64 - } - ResponseTimeWeights [timeStatLength]float64 -) - -var timeStatsLogFactor = (timeStatLength - 1) / (math.Log(float64(maxResponseTime)/float64(minResponseTime)) + 1) - -// TimeToStatScale converts a response time to a distribution vector index. The index -// is represented by a float64 so that linear interpolation can be applied. -func TimeToStatScale(d time.Duration) float64 { - if d < 0 { - return 0 - } - r := float64(d) / float64(minResponseTime) - if r > 1 { - r = math.Log(r) + 1 - } - r *= timeStatsLogFactor - if r > timeStatLength-1 { - return timeStatLength - 1 - } - return r -} - -// StatScaleToTime converts a distribution vector index to a response time. The index -// is represented by a float64 so that linear interpolation can be applied. -func StatScaleToTime(r float64) time.Duration { - r /= timeStatsLogFactor - if r > 1 { - r = math.Exp(r - 1) - } - return time.Duration(r * float64(minResponseTime)) -} - -// TimeoutWeights calculates the weight function used for calculating service value -// based on the response time distribution of the received service. -// It is based on the request timeout value of the system. It consists of a half cosine -// function starting with 1, crossing zero at timeout and reaching -1 at 2*timeout. -// After 2*timeout the weight is constant -1. -func TimeoutWeights(timeout time.Duration) (res ResponseTimeWeights) { - for i := range res { - t := StatScaleToTime(float64(i)) - if t < 2*timeout { - res[i] = math.Cos(math.Pi / 2 * float64(t) / float64(timeout)) - } else { - res[i] = -1 - } - } - return -} - -// EncodeRLP implements rlp.Encoder -func (rt *ResponseTimeStats) EncodeRLP(w io.Writer) error { - enc := struct { - Stats [timeStatLength]uint64 - Exp uint64 - }{rt.stats, rt.exp} - return rlp.Encode(w, &enc) -} - -// DecodeRLP implements rlp.Decoder -func (rt *ResponseTimeStats) DecodeRLP(s *rlp.Stream) error { - var enc struct { - Stats [timeStatLength]uint64 - Exp uint64 - } - if err := s.Decode(&enc); err != nil { - return err - } - rt.stats, rt.exp = enc.Stats, enc.Exp - return nil -} - -// Add adds a new response time with the given weight to the distribution. -func (rt *ResponseTimeStats) Add(respTime time.Duration, weight float64, expFactor utils.ExpirationFactor) { - rt.setExp(expFactor.Exp) - weight *= expFactor.Factor * weightScaleFactor - r := TimeToStatScale(respTime) - i := int(r) - r -= float64(i) - rt.stats[i] += uint64(weight * (1 - r)) - if i < timeStatLength-1 { - rt.stats[i+1] += uint64(weight * r) - } -} - -// setExp sets the power of 2 exponent of the structure, scaling base values (the vector -// itself) up or down if necessary. -func (rt *ResponseTimeStats) setExp(exp uint64) { - if exp > rt.exp { - shift := exp - rt.exp - for i, v := range rt.stats { - rt.stats[i] = v >> shift - } - rt.exp = exp - } - if exp < rt.exp { - shift := rt.exp - exp - for i, v := range rt.stats { - rt.stats[i] = v << shift - } - rt.exp = exp - } -} - -// Value calculates the total service value based on the given distribution, using the -// specified weight function. -func (rt ResponseTimeStats) Value(weights ResponseTimeWeights, expFactor utils.ExpirationFactor) float64 { - var v float64 - for i, s := range rt.stats { - v += float64(s) * weights[i] - } - if v < 0 { - return 0 - } - return expFactor.Value(v, rt.exp) / weightScaleFactor -} - -// AddStats adds the given ResponseTimeStats to the current one. -func (rt *ResponseTimeStats) AddStats(s *ResponseTimeStats) { - rt.setExp(s.exp) - for i, v := range s.stats { - rt.stats[i] += v - } -} - -// SubStats subtracts the given ResponseTimeStats from the current one. -func (rt *ResponseTimeStats) SubStats(s *ResponseTimeStats) { - rt.setExp(s.exp) - for i, v := range s.stats { - if v < rt.stats[i] { - rt.stats[i] -= v - } else { - rt.stats[i] = 0 - } - } -} - -// Timeout suggests a timeout value based on the previous distribution. The parameter -// is the desired rate of timeouts assuming a similar distribution in the future. -// Note that the actual timeout should have a sensible minimum bound so that operating -// under ideal working conditions for a long time (for example, using a local server -// with very low response times) will not make it very hard for the system to accommodate -// longer response times in the future. -func (rt ResponseTimeStats) Timeout(failRatio float64) time.Duration { - var sum uint64 - for _, v := range rt.stats { - sum += v - } - s := uint64(float64(sum) * failRatio) - i := timeStatLength - 1 - for i > 0 && s >= rt.stats[i] { - s -= rt.stats[i] - i-- - } - r := float64(i) + 0.5 - if rt.stats[i] > 0 { - r -= float64(s) / float64(rt.stats[i]) - } - if r < 0 { - r = 0 - } - th := StatScaleToTime(r) - if th > maxResponseTime { - th = maxResponseTime - } - return th -} - -// RtDistribution represents a distribution as a series of (X, Y) chart coordinates, -// where the X axis is the response time in seconds while the Y axis is the amount of -// service value received with a response time close to the X coordinate. -type RtDistribution [timeStatLength][2]float64 - -// Distribution returns a RtDistribution, optionally normalized to a sum of 1. -func (rt ResponseTimeStats) Distribution(normalized bool, expFactor utils.ExpirationFactor) (res RtDistribution) { - var mul float64 - if normalized { - var sum uint64 - for _, v := range rt.stats { - sum += v - } - if sum > 0 { - mul = 1 / float64(sum) - } - } else { - mul = expFactor.Value(float64(1)/weightScaleFactor, rt.exp) - } - for i, v := range rt.stats { - res[i][0] = float64(StatScaleToTime(float64(i))) / float64(time.Second) - res[i][1] = float64(v) * mul - } - return -} diff --git a/les/vflux/client/timestats_test.go b/les/vflux/client/timestats_test.go deleted file mode 100644 index 80ea2047c6..0000000000 --- a/les/vflux/client/timestats_test.go +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "math" - "math/rand" - "testing" - "time" - - "github.com/ethereum/go-ethereum/les/utils" -) - -func TestTransition(t *testing.T) { - t.Parallel() - - var epsilon = 0.01 - var cases = []time.Duration{ - time.Millisecond, minResponseTime, - time.Second, time.Second * 5, maxResponseTime, - } - for _, c := range cases { - got := StatScaleToTime(TimeToStatScale(c)) - if float64(got)*(1+epsilon) < float64(c) || float64(got)*(1-epsilon) > float64(c) { - t.Fatalf("Failed to transition back") - } - } - // If the time is too large(exceeds the max response time. - got := StatScaleToTime(TimeToStatScale(2 * maxResponseTime)) - if float64(got)*(1+epsilon) < float64(maxResponseTime) || float64(got)*(1-epsilon) > float64(maxResponseTime) { - t.Fatalf("Failed to transition back") - } -} - -var maxResponseWeights = TimeoutWeights(maxResponseTime) - -func TestValue(t *testing.T) { - t.Parallel() - - noexp := utils.ExpirationFactor{Factor: 1} - for i := 0; i < 1000; i++ { - max := minResponseTime + time.Duration(rand.Int63n(int64(maxResponseTime-minResponseTime))) - min := minResponseTime + time.Duration(rand.Int63n(int64(max-minResponseTime))) - timeout := max/2 + time.Duration(rand.Int63n(int64(maxResponseTime-max/2))) - s := makeRangeStats(min, max, 1000, noexp) - value := s.Value(TimeoutWeights(timeout), noexp) - // calculate the average weight (the average of the given range of the half cosine - // weight function). - minx := math.Pi / 2 * float64(min) / float64(timeout) - maxx := math.Pi / 2 * float64(max) / float64(timeout) - avgWeight := (math.Sin(maxx) - math.Sin(minx)) / (maxx - minx) - expv := 1000 * avgWeight - if expv < 0 { - expv = 0 - } - if value < expv-10 || value > expv+10 { - t.Errorf("Value failed (expected %v, got %v)", expv, value) - } - } -} - -func TestAddSubExpire(t *testing.T) { - t.Parallel() - - var ( - sum1, sum2 ResponseTimeStats - sum1ValueExp, sum2ValueExp float64 - logOffset utils.Fixed64 - ) - for i := 0; i < 1000; i++ { - exp := utils.ExpFactor(logOffset) - max := minResponseTime + time.Duration(rand.Int63n(int64(maxResponseTime-minResponseTime))) - min := minResponseTime + time.Duration(rand.Int63n(int64(max-minResponseTime))) - s := makeRangeStats(min, max, 1000, exp) - value := s.Value(maxResponseWeights, exp) - sum1.AddStats(&s) - sum1ValueExp += value - if rand.Intn(2) == 1 { - sum2.AddStats(&s) - sum2ValueExp += value - } - logOffset += utils.Float64ToFixed64(0.001 / math.Log(2)) - sum1ValueExp -= sum1ValueExp * 0.001 - sum2ValueExp -= sum2ValueExp * 0.001 - } - exp := utils.ExpFactor(logOffset) - sum1Value := sum1.Value(maxResponseWeights, exp) - if sum1Value < sum1ValueExp*0.99 || sum1Value > sum1ValueExp*1.01 { - t.Errorf("sum1Value failed (expected %v, got %v)", sum1ValueExp, sum1Value) - } - sum2Value := sum2.Value(maxResponseWeights, exp) - if sum2Value < sum2ValueExp*0.99 || sum2Value > sum2ValueExp*1.01 { - t.Errorf("sum2Value failed (expected %v, got %v)", sum2ValueExp, sum2Value) - } - diff := sum1 - diff.SubStats(&sum2) - diffValue := diff.Value(maxResponseWeights, exp) - diffValueExp := sum1ValueExp - sum2ValueExp - if diffValue < diffValueExp*0.99 || diffValue > diffValueExp*1.01 { - t.Errorf("diffValue failed (expected %v, got %v)", diffValueExp, diffValue) - } -} - -func TestTimeout(t *testing.T) { - t.Parallel() - - testTimeoutRange(t, 0, time.Second) - testTimeoutRange(t, time.Second, time.Second*2) - testTimeoutRange(t, time.Second, maxResponseTime) -} - -func testTimeoutRange(t *testing.T, min, max time.Duration) { - s := makeRangeStats(min, max, 1000, utils.ExpirationFactor{Factor: 1}) - for i := 2; i < 9; i++ { - to := s.Timeout(float64(i) / 10) - exp := max - (max-min)*time.Duration(i)/10 - tol := (max - min) / 50 - if to < exp-tol || to > exp+tol { - t.Errorf("Timeout failed (expected %v, got %v)", exp, to) - } - } -} - -func makeRangeStats(min, max time.Duration, amount float64, exp utils.ExpirationFactor) ResponseTimeStats { - var s ResponseTimeStats - amount /= 1000 - for i := 0; i < 1000; i++ { - s.Add(min+(max-min)*time.Duration(i)/999, amount, exp) - } - return s -} diff --git a/les/vflux/client/valuetracker.go b/les/vflux/client/valuetracker.go deleted file mode 100644 index e0d1010ffe..0000000000 --- a/les/vflux/client/valuetracker.go +++ /dev/null @@ -1,506 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "bytes" - "fmt" - "math" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/rlp" -) - -const ( - vtVersion = 1 // database encoding format for ValueTracker - nvtVersion = 1 // database encoding format for NodeValueTracker -) - -var ( - vtKey = []byte("vt:") - vtNodeKey = []byte("vtNode:") -) - -// NodeValueTracker collects service value statistics for a specific server node -type NodeValueTracker struct { - lock sync.Mutex - - vt *ValueTracker - rtStats, lastRtStats ResponseTimeStats - lastTransfer mclock.AbsTime - basket serverBasket - reqCosts []uint64 - reqValues []float64 -} - -// UpdateCosts updates the node value tracker's request cost table -func (nv *NodeValueTracker) UpdateCosts(reqCosts []uint64) { - nv.vt.lock.Lock() - defer nv.vt.lock.Unlock() - - nv.updateCosts(reqCosts, nv.vt.refBasket.reqValues, nv.vt.refBasket.reqValueFactor(reqCosts)) -} - -// updateCosts updates the request cost table of the server. The request value factor -// is also updated based on the given cost table and the current reference basket. -// Note that the contents of the referenced reqValues slice will not change; a new -// reference is passed if the values are updated by ValueTracker. -func (nv *NodeValueTracker) updateCosts(reqCosts []uint64, reqValues []float64, rvFactor float64) { - nv.lock.Lock() - defer nv.lock.Unlock() - - nv.reqCosts = reqCosts - nv.reqValues = reqValues - nv.basket.updateRvFactor(rvFactor) -} - -// transferStats returns request basket and response time statistics that should be -// added to the global statistics. The contents of the server's own request basket are -// gradually transferred to the main reference basket and removed from the server basket -// with the specified transfer rate. -// The response time statistics are retained at both places and therefore the global -// distribution is always the sum of the individual server distributions. -func (nv *NodeValueTracker) transferStats(now mclock.AbsTime, transferRate float64) (requestBasket, ResponseTimeStats) { - nv.lock.Lock() - defer nv.lock.Unlock() - - dt := now - nv.lastTransfer - nv.lastTransfer = now - if dt < 0 { - dt = 0 - } - recentRtStats := nv.rtStats - recentRtStats.SubStats(&nv.lastRtStats) - nv.lastRtStats = nv.rtStats - return nv.basket.transfer(-math.Expm1(-transferRate * float64(dt))), recentRtStats -} - -type ServedRequest struct { - ReqType, Amount uint32 -} - -// Served adds a served request to the node's statistics. An actual request may be composed -// of one or more request types (service vector indices). -func (nv *NodeValueTracker) Served(reqs []ServedRequest, respTime time.Duration) { - nv.vt.statsExpLock.RLock() - expFactor := nv.vt.statsExpFactor - nv.vt.statsExpLock.RUnlock() - - nv.lock.Lock() - defer nv.lock.Unlock() - - var value float64 - for _, r := range reqs { - nv.basket.add(r.ReqType, r.Amount, nv.reqCosts[r.ReqType]*uint64(r.Amount), expFactor) - value += nv.reqValues[r.ReqType] * float64(r.Amount) - } - nv.rtStats.Add(respTime, value, expFactor) -} - -// RtStats returns the node's own response time distribution statistics -func (nv *NodeValueTracker) RtStats() ResponseTimeStats { - nv.lock.Lock() - defer nv.lock.Unlock() - - return nv.rtStats -} - -// ValueTracker coordinates service value calculation for individual servers and updates -// global statistics -type ValueTracker struct { - clock mclock.Clock - lock sync.Mutex - quit chan chan struct{} - db ethdb.KeyValueStore - connected map[enode.ID]*NodeValueTracker - reqTypeCount int - - refBasket referenceBasket - mappings [][]string - currentMapping int - initRefBasket requestBasket - rtStats ResponseTimeStats - - transferRate float64 - statsExpLock sync.RWMutex - statsExpRate, offlineExpRate float64 - statsExpirer utils.Expirer - statsExpFactor utils.ExpirationFactor -} - -type valueTrackerEncV1 struct { - Mappings [][]string - RefBasketMapping uint - RefBasket requestBasket - RtStats ResponseTimeStats - ExpOffset, SavedAt uint64 -} - -type nodeValueTrackerEncV1 struct { - RtStats ResponseTimeStats - ServerBasketMapping uint - ServerBasket requestBasket -} - -// RequestInfo is an initializer structure for the service vector. -type RequestInfo struct { - // Name identifies the request type and is used for re-mapping the service vector if necessary - Name string - // InitAmount and InitValue are used to initialize the reference basket - InitAmount, InitValue float64 -} - -// NewValueTracker creates a new ValueTracker and loads its previously saved state from -// the database if possible. -func NewValueTracker(db ethdb.KeyValueStore, clock mclock.Clock, reqInfo []RequestInfo, updatePeriod time.Duration, transferRate, statsExpRate, offlineExpRate float64) *ValueTracker { - now := clock.Now() - - initRefBasket := requestBasket{items: make([]basketItem, len(reqInfo))} - mapping := make([]string, len(reqInfo)) - - var sumAmount, sumValue float64 - for _, req := range reqInfo { - sumAmount += req.InitAmount - sumValue += req.InitAmount * req.InitValue - } - scaleValues := sumAmount * basketFactor / sumValue - for i, req := range reqInfo { - mapping[i] = req.Name - initRefBasket.items[i].amount = uint64(req.InitAmount * basketFactor) - initRefBasket.items[i].value = uint64(req.InitAmount * req.InitValue * scaleValues) - } - - vt := &ValueTracker{ - clock: clock, - connected: make(map[enode.ID]*NodeValueTracker), - quit: make(chan chan struct{}), - db: db, - reqTypeCount: len(initRefBasket.items), - initRefBasket: initRefBasket, - transferRate: transferRate, - statsExpRate: statsExpRate, - offlineExpRate: offlineExpRate, - } - if vt.loadFromDb(mapping) != nil { - // previous state not saved or invalid, init with default values - vt.refBasket.basket = initRefBasket - vt.mappings = [][]string{mapping} - vt.currentMapping = 0 - } - vt.statsExpirer.SetRate(now, statsExpRate) - vt.refBasket.init(vt.reqTypeCount) - vt.periodicUpdate() - - go func() { - for { - select { - case <-clock.After(updatePeriod): - vt.lock.Lock() - vt.periodicUpdate() - vt.lock.Unlock() - case quit := <-vt.quit: - close(quit) - return - } - } - }() - return vt -} - -// StatsExpirer returns the statistics expirer so that other values can be expired -// with the same rate as the service value statistics. -func (vt *ValueTracker) StatsExpirer() *utils.Expirer { - return &vt.statsExpirer -} - -// StatsExpFactor returns the current expiration factor so that other values can be expired -// with the same rate as the service value statistics. -func (vt *ValueTracker) StatsExpFactor() utils.ExpirationFactor { - vt.statsExpLock.RLock() - defer vt.statsExpLock.RUnlock() - - return vt.statsExpFactor -} - -// loadFromDb loads the value tracker's state from the database and converts saved -// request basket index mapping if it does not match the specified index to name mapping. -func (vt *ValueTracker) loadFromDb(mapping []string) error { - enc, err := vt.db.Get(vtKey) - if err != nil { - return err - } - r := bytes.NewReader(enc) - var version uint - if err := rlp.Decode(r, &version); err != nil { - log.Error("Decoding value tracker state failed", "err", err) - return err - } - if version != vtVersion { - log.Error("Unknown ValueTracker version", "stored", version, "current", nvtVersion) - return fmt.Errorf("unknown ValueTracker version %d (current version is %d)", version, vtVersion) - } - var vte valueTrackerEncV1 - if err := rlp.Decode(r, &vte); err != nil { - log.Error("Decoding value tracker state failed", "err", err) - return err - } - logOffset := utils.Fixed64(vte.ExpOffset) - dt := time.Now().UnixNano() - int64(vte.SavedAt) - if dt > 0 { - logOffset += utils.Float64ToFixed64(float64(dt) * vt.offlineExpRate / math.Log(2)) - } - vt.statsExpirer.SetLogOffset(vt.clock.Now(), logOffset) - vt.rtStats = vte.RtStats - vt.mappings = vte.Mappings - vt.currentMapping = -1 -loop: - for i, m := range vt.mappings { - if len(m) != len(mapping) { - continue loop - } - for j, s := range mapping { - if m[j] != s { - continue loop - } - } - vt.currentMapping = i - break - } - if vt.currentMapping == -1 { - vt.currentMapping = len(vt.mappings) - vt.mappings = append(vt.mappings, mapping) - } - if int(vte.RefBasketMapping) == vt.currentMapping { - vt.refBasket.basket = vte.RefBasket - } else { - if vte.RefBasketMapping >= uint(len(vt.mappings)) { - log.Error("Unknown request basket mapping", "stored", vte.RefBasketMapping, "current", vt.currentMapping) - return fmt.Errorf("unknown request basket mapping %d (current version is %d)", vte.RefBasketMapping, vt.currentMapping) - } - vt.refBasket.basket = vte.RefBasket.convertMapping(vt.mappings[vte.RefBasketMapping], mapping, vt.initRefBasket) - } - return nil -} - -// saveToDb saves the value tracker's state to the database -func (vt *ValueTracker) saveToDb() { - vte := valueTrackerEncV1{ - Mappings: vt.mappings, - RefBasketMapping: uint(vt.currentMapping), - RefBasket: vt.refBasket.basket, - RtStats: vt.rtStats, - ExpOffset: uint64(vt.statsExpirer.LogOffset(vt.clock.Now())), - SavedAt: uint64(time.Now().UnixNano()), - } - enc1, err := rlp.EncodeToBytes(uint(vtVersion)) - if err != nil { - log.Error("Encoding value tracker state failed", "err", err) - return - } - enc2, err := rlp.EncodeToBytes(&vte) - if err != nil { - log.Error("Encoding value tracker state failed", "err", err) - return - } - if err := vt.db.Put(vtKey, append(enc1, enc2...)); err != nil { - log.Error("Saving value tracker state failed", "err", err) - } -} - -// Stop saves the value tracker's state and each loaded node's individual state and -// returns after shutting the internal goroutines down. -func (vt *ValueTracker) Stop() { - quit := make(chan struct{}) - vt.quit <- quit - <-quit - vt.lock.Lock() - vt.periodicUpdate() - for id, nv := range vt.connected { - vt.saveNode(id, nv) - } - vt.connected = nil - vt.saveToDb() - vt.lock.Unlock() -} - -// Register adds a server node to the value tracker -func (vt *ValueTracker) Register(id enode.ID) *NodeValueTracker { - vt.lock.Lock() - defer vt.lock.Unlock() - - if vt.connected == nil { - // ValueTracker has already been stopped - return nil - } - nv := vt.loadOrNewNode(id) - reqTypeCount := len(vt.refBasket.reqValues) - nv.reqCosts = make([]uint64, reqTypeCount) - nv.lastTransfer = vt.clock.Now() - nv.reqValues = vt.refBasket.reqValues - nv.basket.init(reqTypeCount) - - vt.connected[id] = nv - return nv -} - -// Unregister removes a server node from the value tracker -func (vt *ValueTracker) Unregister(id enode.ID) { - vt.lock.Lock() - defer vt.lock.Unlock() - - if nv := vt.connected[id]; nv != nil { - vt.saveNode(id, nv) - delete(vt.connected, id) - } -} - -// GetNode returns an individual server node's value tracker. If it did not exist before -// then a new node is created. -func (vt *ValueTracker) GetNode(id enode.ID) *NodeValueTracker { - vt.lock.Lock() - defer vt.lock.Unlock() - - return vt.loadOrNewNode(id) -} - -// loadOrNewNode returns an individual server node's value tracker. If it did not exist before -// then a new node is created. -func (vt *ValueTracker) loadOrNewNode(id enode.ID) *NodeValueTracker { - if nv, ok := vt.connected[id]; ok { - return nv - } - nv := &NodeValueTracker{vt: vt, lastTransfer: vt.clock.Now()} - enc, err := vt.db.Get(append(vtNodeKey, id[:]...)) - if err != nil { - return nv - } - r := bytes.NewReader(enc) - var version uint - if err := rlp.Decode(r, &version); err != nil { - log.Error("Failed to decode node value tracker", "id", id, "err", err) - return nv - } - if version != nvtVersion { - log.Error("Unknown NodeValueTracker version", "stored", version, "current", nvtVersion) - return nv - } - var nve nodeValueTrackerEncV1 - if err := rlp.Decode(r, &nve); err != nil { - log.Error("Failed to decode node value tracker", "id", id, "err", err) - return nv - } - nv.rtStats = nve.RtStats - nv.lastRtStats = nve.RtStats - if int(nve.ServerBasketMapping) == vt.currentMapping { - nv.basket.basket = nve.ServerBasket - } else { - if nve.ServerBasketMapping >= uint(len(vt.mappings)) { - log.Error("Unknown request basket mapping", "stored", nve.ServerBasketMapping, "current", vt.currentMapping) - return nv - } - nv.basket.basket = nve.ServerBasket.convertMapping(vt.mappings[nve.ServerBasketMapping], vt.mappings[vt.currentMapping], vt.initRefBasket) - } - return nv -} - -// saveNode saves a server node's value tracker to the database -func (vt *ValueTracker) saveNode(id enode.ID, nv *NodeValueTracker) { - recentRtStats := nv.rtStats - recentRtStats.SubStats(&nv.lastRtStats) - vt.rtStats.AddStats(&recentRtStats) - nv.lastRtStats = nv.rtStats - - nve := nodeValueTrackerEncV1{ - RtStats: nv.rtStats, - ServerBasketMapping: uint(vt.currentMapping), - ServerBasket: nv.basket.basket, - } - enc1, err := rlp.EncodeToBytes(uint(nvtVersion)) - if err != nil { - log.Error("Failed to encode service value information", "id", id, "err", err) - return - } - enc2, err := rlp.EncodeToBytes(&nve) - if err != nil { - log.Error("Failed to encode service value information", "id", id, "err", err) - return - } - if err := vt.db.Put(append(vtNodeKey, id[:]...), append(enc1, enc2...)); err != nil { - log.Error("Failed to save service value information", "id", id, "err", err) - } -} - -// RtStats returns the global response time distribution statistics -func (vt *ValueTracker) RtStats() ResponseTimeStats { - vt.lock.Lock() - defer vt.lock.Unlock() - - vt.periodicUpdate() - return vt.rtStats -} - -// periodicUpdate transfers individual node data to the global statistics, normalizes -// the reference basket and updates request values. The global state is also saved to -// the database with each update. -func (vt *ValueTracker) periodicUpdate() { - now := vt.clock.Now() - vt.statsExpLock.Lock() - vt.statsExpFactor = utils.ExpFactor(vt.statsExpirer.LogOffset(now)) - vt.statsExpLock.Unlock() - - for _, nv := range vt.connected { - basket, rtStats := nv.transferStats(now, vt.transferRate) - vt.refBasket.add(basket) - vt.rtStats.AddStats(&rtStats) - } - vt.refBasket.normalize() - vt.refBasket.updateReqValues() - for _, nv := range vt.connected { - nv.updateCosts(nv.reqCosts, vt.refBasket.reqValues, vt.refBasket.reqValueFactor(nv.reqCosts)) - } - vt.saveToDb() -} - -type RequestStatsItem struct { - Name string - ReqAmount, ReqValue float64 -} - -// RequestStats returns the current contents of the reference request basket, with -// request values meaning average per request rather than total. -func (vt *ValueTracker) RequestStats() []RequestStatsItem { - vt.statsExpLock.RLock() - expFactor := vt.statsExpFactor - vt.statsExpLock.RUnlock() - vt.lock.Lock() - defer vt.lock.Unlock() - - vt.periodicUpdate() - res := make([]RequestStatsItem, len(vt.refBasket.basket.items)) - for i, item := range vt.refBasket.basket.items { - res[i].Name = vt.mappings[vt.currentMapping][i] - res[i].ReqAmount = expFactor.Value(float64(item.amount)/basketFactor, vt.refBasket.basket.exp) - res[i].ReqValue = vt.refBasket.reqValues[i] - } - return res -} diff --git a/les/vflux/client/valuetracker_test.go b/les/vflux/client/valuetracker_test.go deleted file mode 100644 index 332d65ee51..0000000000 --- a/les/vflux/client/valuetracker_test.go +++ /dev/null @@ -1,137 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "math" - "math/rand" - "strconv" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb/memorydb" - "github.com/ethereum/go-ethereum/p2p/enode" - - "github.com/ethereum/go-ethereum/les/utils" -) - -const ( - testReqTypes = 3 - testNodeCount = 5 - testReqCount = 10000 - testRounds = 10 -) - -func TestValueTracker(t *testing.T) { - t.Parallel() - - db := memorydb.New() - clock := &mclock.Simulated{} - requestList := make([]RequestInfo, testReqTypes) - relPrices := make([]float64, testReqTypes) - totalAmount := make([]uint64, testReqTypes) - for i := range requestList { - requestList[i] = RequestInfo{Name: "testreq" + strconv.Itoa(i), InitAmount: 1, InitValue: 1} - totalAmount[i] = 1 - relPrices[i] = rand.Float64() + 0.1 - } - nodes := make([]*NodeValueTracker, testNodeCount) - for round := 0; round < testRounds; round++ { - makeRequests := round < testRounds-2 - useExpiration := round == testRounds-1 - var expRate float64 - if useExpiration { - expRate = math.Log(2) / float64(time.Hour*100) - } - - vt := NewValueTracker(db, clock, requestList, time.Minute, 1/float64(time.Hour), expRate, expRate) - updateCosts := func(i int) { - costList := make([]uint64, testReqTypes) - baseCost := rand.Float64()*10000000 + 100000 - for j := range costList { - costList[j] = uint64(baseCost * relPrices[j]) - } - nodes[i].UpdateCosts(costList) - } - for i := range nodes { - nodes[i] = vt.Register(enode.ID{byte(i)}) - updateCosts(i) - } - if makeRequests { - for i := 0; i < testReqCount; i++ { - reqType := rand.Intn(testReqTypes) - reqAmount := rand.Intn(10) + 1 - node := rand.Intn(testNodeCount) - respTime := time.Duration((rand.Float64() + 1) * float64(time.Second) * float64(node+1) / testNodeCount) - totalAmount[reqType] += uint64(reqAmount) - nodes[node].Served([]ServedRequest{{uint32(reqType), uint32(reqAmount)}}, respTime) - clock.Run(time.Second) - } - } else { - clock.Run(time.Hour * 100) - if useExpiration { - for i, a := range totalAmount { - totalAmount[i] = a / 2 - } - } - } - vt.Stop() - var sumrp, sumrv float64 - for i, rp := range relPrices { - sumrp += rp - sumrv += vt.refBasket.reqValues[i] - } - for i, rp := range relPrices { - ratio := vt.refBasket.reqValues[i] * sumrp / (rp * sumrv) - if ratio < 0.99 || ratio > 1.01 { - t.Errorf("reqValues (%v) does not match relPrices (%v)", vt.refBasket.reqValues, relPrices) - break - } - } - exp := utils.ExpFactor(vt.StatsExpirer().LogOffset(clock.Now())) - basketAmount := make([]uint64, testReqTypes) - for i, bi := range vt.refBasket.basket.items { - basketAmount[i] += uint64(exp.Value(float64(bi.amount), vt.refBasket.basket.exp)) - } - if makeRequests { - // if we did not make requests in this round then we expect all amounts to be - // in the reference basket - for _, node := range nodes { - for i, bi := range node.basket.basket.items { - basketAmount[i] += uint64(exp.Value(float64(bi.amount), node.basket.basket.exp)) - } - } - } - for i, a := range basketAmount { - amount := a / basketFactor - if amount+10 < totalAmount[i] || amount > totalAmount[i]+10 { - t.Errorf("totalAmount[%d] mismatch in round %d (expected %d, got %d)", i, round, totalAmount[i], amount) - } - } - var sumValue float64 - for _, node := range nodes { - s := node.RtStats() - sumValue += s.Value(maxResponseWeights, exp) - } - s := vt.RtStats() - mainValue := s.Value(maxResponseWeights, exp) - if sumValue < mainValue-10 || sumValue > mainValue+10 { - t.Errorf("Main rtStats value does not match sum of node rtStats values in round %d (main %v, sum %v)", round, mainValue, sumValue) - } - } -} diff --git a/les/vflux/client/wrsiterator.go b/les/vflux/client/wrsiterator.go deleted file mode 100644 index 1b37cba6e5..0000000000 --- a/les/vflux/client/wrsiterator.go +++ /dev/null @@ -1,127 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "sync" - - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -// WrsIterator returns nodes from the specified selectable set with a weighted random -// selection. Selection weights are provided by a callback function. -type WrsIterator struct { - lock sync.Mutex - cond *sync.Cond - - ns *nodestate.NodeStateMachine - wrs *utils.WeightedRandomSelect - nextNode *enode.Node - closed bool -} - -// NewWrsIterator creates a new WrsIterator. Nodes are selectable if they have all the required -// and none of the disabled flags set. When a node is selected the selectedFlag is set which also -// disables further selectability until it is removed or times out. -func NewWrsIterator(ns *nodestate.NodeStateMachine, requireFlags, disableFlags nodestate.Flags, weightField nodestate.Field) *WrsIterator { - wfn := func(i interface{}) uint64 { - n := ns.GetNode(i.(enode.ID)) - if n == nil { - return 0 - } - wt, _ := ns.GetField(n, weightField).(uint64) - return wt - } - - w := &WrsIterator{ - ns: ns, - wrs: utils.NewWeightedRandomSelect(wfn), - } - w.cond = sync.NewCond(&w.lock) - - ns.SubscribeField(weightField, func(n *enode.Node, state nodestate.Flags, oldValue, newValue interface{}) { - if state.HasAll(requireFlags) && state.HasNone(disableFlags) { - w.lock.Lock() - w.wrs.Update(n.ID()) - w.lock.Unlock() - w.cond.Signal() - } - }) - - ns.SubscribeState(requireFlags.Or(disableFlags), func(n *enode.Node, oldState, newState nodestate.Flags) { - oldMatch := oldState.HasAll(requireFlags) && oldState.HasNone(disableFlags) - newMatch := newState.HasAll(requireFlags) && newState.HasNone(disableFlags) - if newMatch == oldMatch { - return - } - - w.lock.Lock() - if newMatch { - w.wrs.Update(n.ID()) - } else { - w.wrs.Remove(n.ID()) - } - w.lock.Unlock() - w.cond.Signal() - }) - return w -} - -// Next selects the next node. -func (w *WrsIterator) Next() bool { - w.nextNode = w.chooseNode() - return w.nextNode != nil -} - -func (w *WrsIterator) chooseNode() *enode.Node { - w.lock.Lock() - defer w.lock.Unlock() - - for { - for !w.closed && w.wrs.IsEmpty() { - w.cond.Wait() - } - if w.closed { - return nil - } - // Choose the next node at random. Even though w.wrs is guaranteed - // non-empty here, Choose might return nil if all items have weight - // zero. - if c := w.wrs.Choose(); c != nil { - id := c.(enode.ID) - w.wrs.Remove(id) - return w.ns.GetNode(id) - } - } -} - -// Close ends the iterator. -func (w *WrsIterator) Close() { - w.lock.Lock() - w.closed = true - w.lock.Unlock() - w.cond.Signal() -} - -// Node returns the current node. -func (w *WrsIterator) Node() *enode.Node { - w.lock.Lock() - defer w.lock.Unlock() - return w.nextNode -} diff --git a/les/vflux/client/wrsiterator_test.go b/les/vflux/client/wrsiterator_test.go deleted file mode 100644 index f6eb2d8813..0000000000 --- a/les/vflux/client/wrsiterator_test.go +++ /dev/null @@ -1,105 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package client - -import ( - "reflect" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -var ( - testSetup = &nodestate.Setup{} - sfTest1 = testSetup.NewFlag("test1") - sfTest2 = testSetup.NewFlag("test2") - sfTest3 = testSetup.NewFlag("test3") - sfTest4 = testSetup.NewFlag("test4") - sfiTestWeight = testSetup.NewField("nodeWeight", reflect.TypeOf(uint64(0))) -) - -const iterTestNodeCount = 6 - -func TestWrsIterator(t *testing.T) { - t.Parallel() - - ns := nodestate.NewNodeStateMachine(nil, nil, &mclock.Simulated{}, testSetup) - w := NewWrsIterator(ns, sfTest2, sfTest3.Or(sfTest4), sfiTestWeight) - ns.Start() - for i := 1; i <= iterTestNodeCount; i++ { - ns.SetState(testNode(i), sfTest1, nodestate.Flags{}, 0) - ns.SetField(testNode(i), sfiTestWeight, uint64(1)) - } - next := func() int { - ch := make(chan struct{}) - go func() { - w.Next() - close(ch) - }() - select { - case <-ch: - case <-time.After(time.Second * 5): - t.Fatalf("Iterator.Next() timeout") - } - node := w.Node() - ns.SetState(node, sfTest4, nodestate.Flags{}, 0) - return testNodeIndex(node.ID()) - } - set := make(map[int]bool) - expset := func() { - for len(set) > 0 { - n := next() - if !set[n] { - t.Errorf("Item returned by iterator not in the expected set (got %d)", n) - } - delete(set, n) - } - } - - ns.SetState(testNode(1), sfTest2, nodestate.Flags{}, 0) - ns.SetState(testNode(2), sfTest2, nodestate.Flags{}, 0) - ns.SetState(testNode(3), sfTest2, nodestate.Flags{}, 0) - set[1] = true - set[2] = true - set[3] = true - expset() - ns.SetState(testNode(4), sfTest2, nodestate.Flags{}, 0) - ns.SetState(testNode(5), sfTest2.Or(sfTest3), nodestate.Flags{}, 0) - ns.SetState(testNode(6), sfTest2, nodestate.Flags{}, 0) - set[4] = true - set[6] = true - expset() - ns.SetField(testNode(2), sfiTestWeight, uint64(0)) - ns.SetState(testNode(1), nodestate.Flags{}, sfTest4, 0) - ns.SetState(testNode(2), nodestate.Flags{}, sfTest4, 0) - ns.SetState(testNode(3), nodestate.Flags{}, sfTest4, 0) - set[1] = true - set[3] = true - expset() - ns.SetField(testNode(2), sfiTestWeight, uint64(1)) - ns.SetState(testNode(2), nodestate.Flags{}, sfTest2, 0) - ns.SetState(testNode(1), nodestate.Flags{}, sfTest4, 0) - ns.SetState(testNode(2), sfTest2, sfTest4, 0) - ns.SetState(testNode(3), nodestate.Flags{}, sfTest4, 0) - set[1] = true - set[2] = true - set[3] = true - expset() - ns.Stop() -} diff --git a/les/vflux/requests.go b/les/vflux/requests.go deleted file mode 100644 index 5abae2f537..0000000000 --- a/les/vflux/requests.go +++ /dev/null @@ -1,180 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package vflux - -import ( - "errors" - "math" - "math/big" - - "github.com/ethereum/go-ethereum/rlp" -) - -var ErrNoReply = errors.New("no reply for given request") - -const ( - MaxRequestLength = 16 // max number of individual requests in a batch - CapacityQueryName = "cq" - CapacityQueryMaxLen = 16 -) - -type ( - // Request describes a single vflux request inside a batch. Service and request - // type are identified by strings, parameters are RLP encoded. - Request struct { - Service, Name string - Params []byte - } - // Requests are a batch of vflux requests - Requests []Request - - // Replies are the replies to a batch of requests - Replies [][]byte - - // CapacityQueryReq is the encoding format of the capacity query - CapacityQueryReq struct { - Bias uint64 // seconds - AddTokens []IntOrInf - } - // CapacityQueryReply is the encoding format of the response to the capacity query - CapacityQueryReply []uint64 -) - -// Add encodes and adds a new request to the batch -func (r *Requests) Add(service, name string, val interface{}) (int, error) { - enc, err := rlp.EncodeToBytes(val) - if err != nil { - return -1, err - } - *r = append(*r, Request{ - Service: service, - Name: name, - Params: enc, - }) - return len(*r) - 1, nil -} - -// Get decodes the reply to the i-th request in the batch -func (r Replies) Get(i int, val interface{}) error { - if i < 0 || i >= len(r) { - return ErrNoReply - } - return rlp.DecodeBytes(r[i], val) -} - -const ( - IntNonNegative = iota - IntNegative - IntPlusInf - IntMinusInf -) - -// IntOrInf is the encoding format for arbitrary length signed integers that can also -// hold the values of +Inf or -Inf -type IntOrInf struct { - Type uint8 - Value big.Int -} - -// BigInt returns the value as a big.Int or panics if the value is infinity -func (i *IntOrInf) BigInt() *big.Int { - switch i.Type { - case IntNonNegative: - return new(big.Int).Set(&i.Value) - case IntNegative: - return new(big.Int).Neg(&i.Value) - case IntPlusInf: - panic(nil) // caller should check Inf() before trying to convert to big.Int - case IntMinusInf: - panic(nil) - } - return &big.Int{} // invalid type decodes to 0 value -} - -// Inf returns 1 if the value is +Inf, -1 if it is -Inf, 0 otherwise -func (i *IntOrInf) Inf() int { - switch i.Type { - case IntPlusInf: - return 1 - case IntMinusInf: - return -1 - } - return 0 // invalid type decodes to 0 value -} - -// Int64 limits the value between MinInt64 and MaxInt64 (even if it is +-Inf) and returns an int64 type -func (i *IntOrInf) Int64() int64 { - switch i.Type { - case IntNonNegative: - if i.Value.IsInt64() { - return i.Value.Int64() - } else { - return math.MaxInt64 - } - case IntNegative: - if i.Value.IsInt64() { - return -i.Value.Int64() - } else { - return math.MinInt64 - } - case IntPlusInf: - return math.MaxInt64 - case IntMinusInf: - return math.MinInt64 - } - return 0 // invalid type decodes to 0 value -} - -// SetBigInt sets the value to the given big.Int -func (i *IntOrInf) SetBigInt(v *big.Int) { - if v.Sign() >= 0 { - i.Type = IntNonNegative - i.Value.Set(v) - } else { - i.Type = IntNegative - i.Value.Neg(v) - } -} - -// SetInt64 sets the value to the given int64. Note that MaxInt64 translates to +Inf -// while MinInt64 translates to -Inf. -func (i *IntOrInf) SetInt64(v int64) { - if v >= 0 { - if v == math.MaxInt64 { - i.Type = IntPlusInf - } else { - i.Type = IntNonNegative - i.Value.SetInt64(v) - } - } else { - if v == math.MinInt64 { - i.Type = IntMinusInf - } else { - i.Type = IntNegative - i.Value.SetInt64(-v) - } - } -} - -// SetInf sets the value to +Inf or -Inf -func (i *IntOrInf) SetInf(sign int) { - if sign == 1 { - i.Type = IntPlusInf - } else { - i.Type = IntMinusInf - } -} diff --git a/les/vflux/server/balance.go b/les/vflux/server/balance.go deleted file mode 100644 index b09f7bb501..0000000000 --- a/les/vflux/server/balance.go +++ /dev/null @@ -1,693 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "errors" - "math" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -var errBalanceOverflow = errors.New("balance overflow") - -const maxBalance = math.MaxInt64 // maximum allowed balance value - -const ( - balanceCallbackUpdate = iota // called when priority drops below the last minimum estimate - balanceCallbackZero // called when priority drops to zero (positive balance exhausted) - balanceCallbackCount // total number of balance callbacks -) - -// PriceFactors determine the pricing policy (may apply either to positive or -// negative balances which may have different factors). -// - TimeFactor is cost unit per nanosecond of connection time -// - CapacityFactor is cost unit per nanosecond of connection time per 1000000 capacity -// - RequestFactor is cost unit per request "realCost" unit -type PriceFactors struct { - TimeFactor, CapacityFactor, RequestFactor float64 -} - -// connectionPrice returns the price of connection per nanosecond at the given capacity -// and the estimated average request cost. -func (p PriceFactors) connectionPrice(cap uint64, avgReqCost float64) float64 { - return p.TimeFactor + float64(cap)*p.CapacityFactor/1000000 + p.RequestFactor*avgReqCost -} - -type ( - // nodePriority interface provides current and estimated future priorities on demand - nodePriority interface { - // priority should return the current priority of the node (higher is better) - priority(cap uint64) int64 - // estimatePriority should return a lower estimate for the minimum of the node priority - // value starting from the current moment until the given time. If the priority goes - // under the returned estimate before the specified moment then it is the caller's - // responsibility to signal with updateFlag. - estimatePriority(cap uint64, addBalance int64, future, bias time.Duration, update bool) int64 - } - - // ReadOnlyBalance provides read-only operations on the node balance - ReadOnlyBalance interface { - nodePriority - GetBalance() (uint64, uint64) - GetRawBalance() (utils.ExpiredValue, utils.ExpiredValue) - GetPriceFactors() (posFactor, negFactor PriceFactors) - } - - // ConnectedBalance provides operations permitted on connected nodes (non-read-only - // operations are not permitted inside a BalanceOperation) - ConnectedBalance interface { - ReadOnlyBalance - SetPriceFactors(posFactor, negFactor PriceFactors) - RequestServed(cost uint64) uint64 - } - - // AtomicBalanceOperator provides operations permitted in an atomic BalanceOperation - AtomicBalanceOperator interface { - ReadOnlyBalance - AddBalance(amount int64) (uint64, uint64, error) - SetBalance(pos, neg uint64) error - } -) - -// nodeBalance keeps track of the positive and negative balances of a connected -// client and calculates actual and projected future priority values. -// Implements nodePriority interface. -type nodeBalance struct { - bt *balanceTracker - lock sync.RWMutex - node *enode.Node - connAddress string - active, hasPriority, setFlags bool - capacity uint64 - balance balance - posFactor, negFactor PriceFactors - sumReqCost uint64 - lastUpdate, nextUpdate, initTime mclock.AbsTime - updateEvent mclock.Timer - // since only a limited and fixed number of callbacks are needed, they are - // stored in a fixed size array ordered by priority threshold. - callbacks [balanceCallbackCount]balanceCallback - // callbackIndex maps balanceCallback constants to callbacks array indexes (-1 if not active) - callbackIndex [balanceCallbackCount]int - callbackCount int // number of active callbacks -} - -// balance represents a pair of positive and negative balances -type balance struct { - pos, neg utils.ExpiredValue - posExp, negExp utils.ValueExpirer -} - -// posValue returns the value of positive balance at a given timestamp. -func (b balance) posValue(now mclock.AbsTime) uint64 { - return b.pos.Value(b.posExp.LogOffset(now)) -} - -// negValue returns the value of negative balance at a given timestamp. -func (b balance) negValue(now mclock.AbsTime) uint64 { - return b.neg.Value(b.negExp.LogOffset(now)) -} - -// addValue adds the value of a given amount to the balance. The original value and -// updated value will also be returned if the addition is successful. -// Returns the error if the given value is too large and the value overflows. -func (b *balance) addValue(now mclock.AbsTime, amount int64, pos bool, force bool) (uint64, uint64, int64, error) { - var ( - val utils.ExpiredValue - offset utils.Fixed64 - ) - if pos { - offset, val = b.posExp.LogOffset(now), b.pos - } else { - offset, val = b.negExp.LogOffset(now), b.neg - } - old := val.Value(offset) - if amount > 0 && (amount > maxBalance || old > maxBalance-uint64(amount)) { - if !force { - return old, 0, 0, errBalanceOverflow - } - val = utils.ExpiredValue{} - amount = maxBalance - } - net := val.Add(amount, offset) - if pos { - b.pos = val - } else { - b.neg = val - } - return old, val.Value(offset), net, nil -} - -// setValue sets the internal balance amount to the given values. Returns the -// error if the given value is too large. -func (b *balance) setValue(now mclock.AbsTime, pos uint64, neg uint64) error { - if pos > maxBalance || neg > maxBalance { - return errBalanceOverflow - } - var pb, nb utils.ExpiredValue - pb.Add(int64(pos), b.posExp.LogOffset(now)) - nb.Add(int64(neg), b.negExp.LogOffset(now)) - b.pos = pb - b.neg = nb - return nil -} - -// balanceCallback represents a single callback that is activated when client priority -// reaches the given threshold -type balanceCallback struct { - id int - threshold int64 - callback func() -} - -// GetBalance returns the current positive and negative balance. -func (n *nodeBalance) GetBalance() (uint64, uint64) { - n.lock.Lock() - defer n.lock.Unlock() - - now := n.bt.clock.Now() - n.updateBalance(now) - return n.balance.posValue(now), n.balance.negValue(now) -} - -// GetRawBalance returns the current positive and negative balance -// but in the raw(expired value) format. -func (n *nodeBalance) GetRawBalance() (utils.ExpiredValue, utils.ExpiredValue) { - n.lock.Lock() - defer n.lock.Unlock() - - now := n.bt.clock.Now() - n.updateBalance(now) - return n.balance.pos, n.balance.neg -} - -// AddBalance adds the given amount to the positive balance and returns the balance -// before and after the operation. Exceeding maxBalance results in an error (balance is -// unchanged) while adding a negative amount higher than the current balance results in -// zero balance. -// Note: this function should run inside a NodeStateMachine operation -func (n *nodeBalance) AddBalance(amount int64) (uint64, uint64, error) { - var ( - err error - old, new uint64 - now = n.bt.clock.Now() - callbacks []func() - setPriority bool - ) - // Operation with holding the lock - n.bt.updateTotalBalance(n, func() bool { - n.updateBalance(now) - if old, new, _, err = n.balance.addValue(now, amount, true, false); err != nil { - return false - } - callbacks, setPriority = n.checkCallbacks(now), n.checkPriorityStatus() - n.storeBalance(true, false) - return true - }) - if err != nil { - return old, old, err - } - // Operation without holding the lock - for _, cb := range callbacks { - cb() - } - if n.setFlags { - if setPriority { - n.bt.ns.SetStateSub(n.node, n.bt.setup.priorityFlag, nodestate.Flags{}, 0) - } - // Note: priority flag is automatically removed by the zero priority callback if necessary - n.signalPriorityUpdate() - } - return old, new, nil -} - -// SetBalance sets the positive and negative balance to the given values -// Note: this function should run inside a NodeStateMachine operation -func (n *nodeBalance) SetBalance(pos, neg uint64) error { - var ( - now = n.bt.clock.Now() - callbacks []func() - setPriority bool - ) - // Operation with holding the lock - n.bt.updateTotalBalance(n, func() bool { - n.updateBalance(now) - if err := n.balance.setValue(now, pos, neg); err != nil { - return false - } - callbacks, setPriority = n.checkCallbacks(now), n.checkPriorityStatus() - n.storeBalance(true, true) - return true - }) - // Operation without holding the lock - for _, cb := range callbacks { - cb() - } - if n.setFlags { - if setPriority { - n.bt.ns.SetStateSub(n.node, n.bt.setup.priorityFlag, nodestate.Flags{}, 0) - } - // Note: priority flag is automatically removed by the zero priority callback if necessary - n.signalPriorityUpdate() - } - return nil -} - -// RequestServed should be called after serving a request for the given peer -func (n *nodeBalance) RequestServed(cost uint64) (newBalance uint64) { - n.lock.Lock() - - var ( - check bool - fcost = float64(cost) - now = n.bt.clock.Now() - ) - n.updateBalance(now) - if !n.balance.pos.IsZero() { - posCost := -int64(fcost * n.posFactor.RequestFactor) - if posCost == 0 { - fcost = 0 - newBalance = n.balance.posValue(now) - } else { - var net int64 - _, newBalance, net, _ = n.balance.addValue(now, posCost, true, false) - if posCost == net { - fcost = 0 - } else { - fcost *= 1 - float64(net)/float64(posCost) - } - check = true - } - } - if fcost > 0 && n.negFactor.RequestFactor != 0 { - n.balance.addValue(now, int64(fcost*n.negFactor.RequestFactor), false, false) - check = true - } - n.sumReqCost += cost - - var callbacks []func() - if check { - callbacks = n.checkCallbacks(now) - } - n.lock.Unlock() - - if callbacks != nil { - n.bt.ns.Operation(func() { - for _, cb := range callbacks { - cb() - } - }) - } - return -} - -// priority returns the actual priority based on the current balance -func (n *nodeBalance) priority(capacity uint64) int64 { - n.lock.Lock() - defer n.lock.Unlock() - - now := n.bt.clock.Now() - n.updateBalance(now) - return n.balanceToPriority(now, n.balance, capacity) -} - -// EstMinPriority gives a lower estimate for the priority at a given time in the future. -// An average request cost per time is assumed that is twice the average cost per time -// in the current session. -// If update is true then a priority callback is added that turns updateFlag on and off -// in case the priority goes below the estimated minimum. -func (n *nodeBalance) estimatePriority(capacity uint64, addBalance int64, future, bias time.Duration, update bool) int64 { - n.lock.Lock() - defer n.lock.Unlock() - - now := n.bt.clock.Now() - n.updateBalance(now) - - b := n.balance // copy the balance - if addBalance != 0 { - b.addValue(now, addBalance, true, true) - } - if future > 0 { - var avgReqCost float64 - dt := time.Duration(n.lastUpdate - n.initTime) - if dt > time.Second { - avgReqCost = float64(n.sumReqCost) * 2 / float64(dt) - } - b = n.reducedBalance(b, now, future, capacity, avgReqCost) - } - if bias > 0 { - b = n.reducedBalance(b, now.Add(future), bias, capacity, 0) - } - pri := n.balanceToPriority(now, b, capacity) - // Ensure that biased estimates are always lower than actual priorities, even if - // the bias is very small. - // This ensures that two nodes will not ping-pong update signals forever if both of - // them have zero estimated priority drop in the projected future. - current := n.balanceToPriority(now, n.balance, capacity) - if pri >= current { - pri = current - 1 - } - if update { - n.addCallback(balanceCallbackUpdate, pri, n.signalPriorityUpdate) - } - return pri -} - -// SetPriceFactors sets the price factors. TimeFactor is the price of a nanosecond of -// connection while RequestFactor is the price of a request cost unit. -func (n *nodeBalance) SetPriceFactors(posFactor, negFactor PriceFactors) { - n.lock.Lock() - now := n.bt.clock.Now() - n.updateBalance(now) - n.posFactor, n.negFactor = posFactor, negFactor - callbacks := n.checkCallbacks(now) - n.lock.Unlock() - if callbacks != nil { - n.bt.ns.Operation(func() { - for _, cb := range callbacks { - cb() - } - }) - } -} - -// GetPriceFactors returns the price factors -func (n *nodeBalance) GetPriceFactors() (posFactor, negFactor PriceFactors) { - n.lock.Lock() - defer n.lock.Unlock() - - return n.posFactor, n.negFactor -} - -// activate starts time/capacity cost deduction. -func (n *nodeBalance) activate() { - n.bt.updateTotalBalance(n, func() bool { - if n.active { - return false - } - n.active = true - n.lastUpdate = n.bt.clock.Now() - return true - }) -} - -// deactivate stops time/capacity cost deduction and saves the balances in the database -func (n *nodeBalance) deactivate() { - n.bt.updateTotalBalance(n, func() bool { - if !n.active { - return false - } - n.updateBalance(n.bt.clock.Now()) - if n.updateEvent != nil { - n.updateEvent.Stop() - n.updateEvent = nil - } - n.storeBalance(true, true) - n.active = false - return true - }) -} - -// updateBalance updates balance based on the time factor -func (n *nodeBalance) updateBalance(now mclock.AbsTime) { - if n.active && now > n.lastUpdate { - n.balance = n.reducedBalance(n.balance, n.lastUpdate, time.Duration(now-n.lastUpdate), n.capacity, 0) - n.lastUpdate = now - } -} - -// storeBalance stores the positive and/or negative balance of the node in the database -func (n *nodeBalance) storeBalance(pos, neg bool) { - if pos { - n.bt.storeBalance(n.node.ID().Bytes(), false, n.balance.pos) - } - if neg { - n.bt.storeBalance([]byte(n.connAddress), true, n.balance.neg) - } -} - -// addCallback sets up a one-time callback to be called when priority reaches -// the threshold. If it has already reached the threshold the callback is called -// immediately. -// Note: should be called while n.lock is held -// Note 2: the callback function runs inside a NodeStateMachine operation -func (n *nodeBalance) addCallback(id int, threshold int64, callback func()) { - n.removeCallback(id) - idx := 0 - for idx < n.callbackCount && threshold > n.callbacks[idx].threshold { - idx++ - } - for i := n.callbackCount - 1; i >= idx; i-- { - n.callbackIndex[n.callbacks[i].id]++ - n.callbacks[i+1] = n.callbacks[i] - } - n.callbackCount++ - n.callbackIndex[id] = idx - n.callbacks[idx] = balanceCallback{id, threshold, callback} - now := n.bt.clock.Now() - n.updateBalance(now) - n.scheduleCheck(now) -} - -// removeCallback removes the given callback and returns true if it was active -// Note: should be called while n.lock is held -func (n *nodeBalance) removeCallback(id int) bool { - idx := n.callbackIndex[id] - if idx == -1 { - return false - } - n.callbackIndex[id] = -1 - for i := idx; i < n.callbackCount-1; i++ { - n.callbackIndex[n.callbacks[i+1].id]-- - n.callbacks[i] = n.callbacks[i+1] - } - n.callbackCount-- - return true -} - -// checkCallbacks checks whether the threshold of any of the active callbacks -// have been reached and returns triggered callbacks. -// Note: checkCallbacks assumes that the balance has been recently updated. -func (n *nodeBalance) checkCallbacks(now mclock.AbsTime) (callbacks []func()) { - if n.callbackCount == 0 || n.capacity == 0 { - return - } - pri := n.balanceToPriority(now, n.balance, n.capacity) - for n.callbackCount != 0 && n.callbacks[n.callbackCount-1].threshold >= pri { - n.callbackCount-- - n.callbackIndex[n.callbacks[n.callbackCount].id] = -1 - callbacks = append(callbacks, n.callbacks[n.callbackCount].callback) - } - n.scheduleCheck(now) - return -} - -// scheduleCheck sets up or updates a scheduled event to ensure that it will be called -// again just after the next threshold has been reached. -func (n *nodeBalance) scheduleCheck(now mclock.AbsTime) { - if n.callbackCount != 0 { - d, ok := n.timeUntil(n.callbacks[n.callbackCount-1].threshold) - if !ok { - n.nextUpdate = 0 - n.updateAfter(0) - return - } - if n.nextUpdate == 0 || n.nextUpdate > now.Add(d) { - if d > time.Second { - // Note: if the scheduled update is not in the very near future then we - // schedule the update a bit earlier. This way we do need to update a few - // extra times but don't need to reschedule every time a processed request - // brings the expected firing time a little bit closer. - d = ((d - time.Second) * 7 / 8) + time.Second - } - n.nextUpdate = now.Add(d) - n.updateAfter(d) - } - } else { - n.nextUpdate = 0 - n.updateAfter(0) - } -} - -// updateAfter schedules a balance update and callback check in the future -func (n *nodeBalance) updateAfter(dt time.Duration) { - if n.updateEvent == nil || n.updateEvent.Stop() { - if dt == 0 { - n.updateEvent = nil - } else { - n.updateEvent = n.bt.clock.AfterFunc(dt, func() { - var callbacks []func() - n.lock.Lock() - if n.callbackCount != 0 { - now := n.bt.clock.Now() - n.updateBalance(now) - callbacks = n.checkCallbacks(now) - } - n.lock.Unlock() - if callbacks != nil { - n.bt.ns.Operation(func() { - for _, cb := range callbacks { - cb() - } - }) - } - }) - } - } -} - -// balanceExhausted should be called when the positive balance is exhausted (priority goes to zero/negative) -// Note: this function should run inside a NodeStateMachine operation -func (n *nodeBalance) balanceExhausted() { - n.lock.Lock() - n.storeBalance(true, false) - n.hasPriority = false - n.lock.Unlock() - if n.setFlags { - n.bt.ns.SetStateSub(n.node, nodestate.Flags{}, n.bt.setup.priorityFlag, 0) - } -} - -// checkPriorityStatus checks whether the node has gained priority status and sets the priority -// callback and flag if necessary. It assumes that the balance has been recently updated. -// Note that the priority flag has to be set by the caller after the mutex has been released. -func (n *nodeBalance) checkPriorityStatus() bool { - if !n.hasPriority && !n.balance.pos.IsZero() { - n.hasPriority = true - n.addCallback(balanceCallbackZero, 0, func() { n.balanceExhausted() }) - return true - } - return false -} - -// signalPriorityUpdate signals that the priority fell below the previous minimum estimate -// Note: this function should run inside a NodeStateMachine operation -func (n *nodeBalance) signalPriorityUpdate() { - n.bt.ns.SetStateSub(n.node, n.bt.setup.updateFlag, nodestate.Flags{}, 0) - n.bt.ns.SetStateSub(n.node, nodestate.Flags{}, n.bt.setup.updateFlag, 0) -} - -// setCapacity updates the capacity value used for priority calculation -// Note: capacity should never be zero -// Note 2: this function should run inside a NodeStateMachine operation -func (n *nodeBalance) setCapacity(capacity uint64) { - n.lock.Lock() - now := n.bt.clock.Now() - n.updateBalance(now) - n.capacity = capacity - callbacks := n.checkCallbacks(now) - n.lock.Unlock() - for _, cb := range callbacks { - cb() - } -} - -// balanceToPriority converts a balance to a priority value. Lower priority means -// first to disconnect. Positive balance translates to positive priority. If positive -// balance is zero then negative balance translates to a negative priority. -func (n *nodeBalance) balanceToPriority(now mclock.AbsTime, b balance, capacity uint64) int64 { - pos := b.posValue(now) - if pos > 0 { - return int64(pos / capacity) - } - return -int64(b.negValue(now)) -} - -// priorityToBalance converts a target priority to a requested balance value. -// If the priority is negative, then minimal negative balance is returned; -// otherwise the minimal positive balance is returned. -func (n *nodeBalance) priorityToBalance(priority int64, capacity uint64) (uint64, uint64) { - if priority > 0 { - return uint64(priority) * n.capacity, 0 - } - return 0, uint64(-priority) -} - -// reducedBalance estimates the reduced balance at a given time in the future based -// on the given balance, the time factor and an estimated average request cost per time ratio -func (n *nodeBalance) reducedBalance(b balance, start mclock.AbsTime, dt time.Duration, capacity uint64, avgReqCost float64) balance { - // since the costs are applied continuously during the dt time period we calculate - // the expiration offset at the middle of the period - var ( - at = start.Add(dt / 2) - dtf = float64(dt) - ) - if !b.pos.IsZero() { - factor := n.posFactor.connectionPrice(capacity, avgReqCost) - diff := -int64(dtf * factor) - _, _, net, _ := b.addValue(at, diff, true, false) - if net == diff { - dtf = 0 - } else { - dtf += float64(net) / factor - } - } - if dtf > 0 { - factor := n.negFactor.connectionPrice(capacity, avgReqCost) - b.addValue(at, int64(dtf*factor), false, false) - } - return b -} - -// timeUntil calculates the remaining time needed to reach a given priority level -// assuming that no requests are processed until then. If the given level is never -// reached then (0, false) is returned. If it has already been reached then (0, true) -// is returned. -// Note: the function assumes that the balance has been recently updated and -// calculates the time starting from the last update. -func (n *nodeBalance) timeUntil(priority int64) (time.Duration, bool) { - var ( - now = n.bt.clock.Now() - pos = n.balance.posValue(now) - targetPos, targetNeg = n.priorityToBalance(priority, n.capacity) - diffTime float64 - ) - if pos > 0 { - timePrice := n.posFactor.connectionPrice(n.capacity, 0) - if timePrice < 1e-100 { - return 0, false - } - if targetPos > 0 { - if targetPos > pos { - return 0, true - } - diffTime = float64(pos-targetPos) / timePrice - return time.Duration(diffTime), true - } else { - diffTime = float64(pos) / timePrice - } - } else { - if targetPos > 0 { - return 0, true - } - } - neg := n.balance.negValue(now) - if targetNeg > neg { - timePrice := n.negFactor.connectionPrice(n.capacity, 0) - if timePrice < 1e-100 { - return 0, false - } - diffTime += float64(targetNeg-neg) / timePrice - } - return time.Duration(diffTime), true -} diff --git a/les/vflux/server/balance_test.go b/les/vflux/server/balance_test.go deleted file mode 100644 index e1ff7bf4e9..0000000000 --- a/les/vflux/server/balance_test.go +++ /dev/null @@ -1,459 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "math" - "math/rand" - "reflect" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/ethdb/memorydb" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -type zeroExpirer struct{} - -func (z zeroExpirer) SetRate(now mclock.AbsTime, rate float64) {} -func (z zeroExpirer) SetLogOffset(now mclock.AbsTime, logOffset utils.Fixed64) {} -func (z zeroExpirer) LogOffset(now mclock.AbsTime) utils.Fixed64 { return 0 } - -type balanceTestClient struct{} - -func (client balanceTestClient) FreeClientId() string { return "" } - -type balanceTestSetup struct { - clock *mclock.Simulated - db ethdb.KeyValueStore - ns *nodestate.NodeStateMachine - setup *serverSetup - bt *balanceTracker -} - -func newBalanceTestSetup(db ethdb.KeyValueStore, posExp, negExp utils.ValueExpirer) *balanceTestSetup { - // Initialize and customize the setup for the balance testing - clock := &mclock.Simulated{} - setup := newServerSetup() - setup.clientField = setup.setup.NewField("balanceTestClient", reflect.TypeOf(balanceTestClient{})) - - ns := nodestate.NewNodeStateMachine(nil, nil, clock, setup.setup) - if posExp == nil { - posExp = zeroExpirer{} - } - if negExp == nil { - negExp = zeroExpirer{} - } - if db == nil { - db = memorydb.New() - } - bt := newBalanceTracker(ns, setup, db, clock, posExp, negExp) - ns.Start() - return &balanceTestSetup{ - clock: clock, - db: db, - ns: ns, - setup: setup, - bt: bt, - } -} - -func (b *balanceTestSetup) newNode(capacity uint64) *nodeBalance { - node := enode.SignNull(&enr.Record{}, enode.ID{}) - b.ns.SetField(node, b.setup.clientField, balanceTestClient{}) - if capacity != 0 { - b.ns.SetField(node, b.setup.capacityField, capacity) - } - n, _ := b.ns.GetField(node, b.setup.balanceField).(*nodeBalance) - return n -} - -func (b *balanceTestSetup) setBalance(node *nodeBalance, pos, neg uint64) (err error) { - b.bt.BalanceOperation(node.node.ID(), node.connAddress, func(balance AtomicBalanceOperator) { - err = balance.SetBalance(pos, neg) - }) - return -} - -func (b *balanceTestSetup) addBalance(node *nodeBalance, add int64) (old, new uint64, err error) { - b.bt.BalanceOperation(node.node.ID(), node.connAddress, func(balance AtomicBalanceOperator) { - old, new, err = balance.AddBalance(add) - }) - return -} - -func (b *balanceTestSetup) stop() { - b.bt.stop() - b.ns.Stop() -} - -func TestAddBalance(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - - node := b.newNode(1000) - var inputs = []struct { - delta int64 - expect [2]uint64 - total uint64 - expectErr bool - }{ - {100, [2]uint64{0, 100}, 100, false}, - {-100, [2]uint64{100, 0}, 0, false}, - {-100, [2]uint64{0, 0}, 0, false}, - {1, [2]uint64{0, 1}, 1, false}, - {maxBalance, [2]uint64{0, 0}, 0, true}, - } - for _, i := range inputs { - old, new, err := b.addBalance(node, i.delta) - if i.expectErr { - if err == nil { - t.Fatalf("Expect get error but nil") - } - continue - } else if err != nil { - t.Fatalf("Expect get no error but %v", err) - } - if old != i.expect[0] || new != i.expect[1] { - t.Fatalf("Positive balance mismatch, got %v -> %v", old, new) - } - if b.bt.TotalTokenAmount() != i.total { - t.Fatalf("Total positive balance mismatch, want %v, got %v", i.total, b.bt.TotalTokenAmount()) - } - } -} - -func TestSetBalance(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - node := b.newNode(1000) - - var inputs = []struct { - pos, neg uint64 - }{ - {1000, 0}, - {0, 1000}, - {1000, 1000}, - } - for _, i := range inputs { - b.setBalance(node, i.pos, i.neg) - pos, neg := node.GetBalance() - if pos != i.pos { - t.Fatalf("Positive balance mismatch, want %v, got %v", i.pos, pos) - } - if neg != i.neg { - t.Fatalf("Negative balance mismatch, want %v, got %v", i.neg, neg) - } - } -} - -func TestBalanceTimeCost(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - node := b.newNode(1000) - - node.SetPriceFactors(PriceFactors{1, 0, 1}, PriceFactors{1, 0, 1}) - b.setBalance(node, uint64(time.Minute), 0) // 1 minute time allowance - - var inputs = []struct { - runTime time.Duration - expPos uint64 - expNeg uint64 - }{ - {time.Second, uint64(time.Second * 59), 0}, - {0, uint64(time.Second * 59), 0}, - {time.Second * 59, 0, 0}, - {time.Second, 0, uint64(time.Second)}, - } - for _, i := range inputs { - b.clock.Run(i.runTime) - if pos, _ := node.GetBalance(); pos != i.expPos { - t.Fatalf("Positive balance mismatch, want %v, got %v", i.expPos, pos) - } - if _, neg := node.GetBalance(); neg != i.expNeg { - t.Fatalf("Negative balance mismatch, want %v, got %v", i.expNeg, neg) - } - } - - b.setBalance(node, uint64(time.Minute), 0) // Refill 1 minute time allowance - for _, i := range inputs { - b.clock.Run(i.runTime) - if pos, _ := node.GetBalance(); pos != i.expPos { - t.Fatalf("Positive balance mismatch, want %v, got %v", i.expPos, pos) - } - if _, neg := node.GetBalance(); neg != i.expNeg { - t.Fatalf("Negative balance mismatch, want %v, got %v", i.expNeg, neg) - } - } -} - -func TestBalanceReqCost(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - node := b.newNode(1000) - node.SetPriceFactors(PriceFactors{1, 0, 1}, PriceFactors{1, 0, 1}) - - b.setBalance(node, uint64(time.Minute), 0) // 1 minute time serving time allowance - var inputs = []struct { - reqCost uint64 - expPos uint64 - expNeg uint64 - }{ - {uint64(time.Second), uint64(time.Second * 59), 0}, - {0, uint64(time.Second * 59), 0}, - {uint64(time.Second * 59), 0, 0}, - {uint64(time.Second), 0, uint64(time.Second)}, - } - for _, i := range inputs { - node.RequestServed(i.reqCost) - if pos, _ := node.GetBalance(); pos != i.expPos { - t.Fatalf("Positive balance mismatch, want %v, got %v", i.expPos, pos) - } - if _, neg := node.GetBalance(); neg != i.expNeg { - t.Fatalf("Negative balance mismatch, want %v, got %v", i.expNeg, neg) - } - } -} - -func TestBalanceToPriority(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - node := b.newNode(1000) - node.SetPriceFactors(PriceFactors{1, 0, 1}, PriceFactors{1, 0, 1}) - - var inputs = []struct { - pos uint64 - neg uint64 - priority int64 - }{ - {1000, 0, 1}, - {2000, 0, 2}, // Higher balance, higher priority value - {0, 0, 0}, - {0, 1000, -1000}, - } - for _, i := range inputs { - b.setBalance(node, i.pos, i.neg) - priority := node.priority(1000) - if priority != i.priority { - t.Fatalf("priority mismatch, want %v, got %v", i.priority, priority) - } - } -} - -func TestEstimatedPriority(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - node := b.newNode(1000000000) - node.SetPriceFactors(PriceFactors{1, 0, 1}, PriceFactors{1, 0, 1}) - b.setBalance(node, uint64(time.Minute), 0) - var inputs = []struct { - runTime time.Duration // time cost - futureTime time.Duration // diff of future time - reqCost uint64 // single request cost - priority int64 // expected estimated priority - }{ - {time.Second, time.Second, 0, 58}, - {0, time.Second, 0, 58}, - - // 2 seconds time cost, 1 second estimated time cost, 10^9 request cost, - // 10^9 estimated request cost per second. - {time.Second, time.Second, 1000000000, 55}, - - // 3 seconds time cost, 3 second estimated time cost, 10^9*2 request cost, - // 4*10^9 estimated request cost. - {time.Second, 3 * time.Second, 1000000000, 48}, - - // All positive balance is used up - {time.Second * 55, 0, 0, -1}, - - // 1 minute estimated time cost, 4/58 * 10^9 estimated request cost per sec. - {0, time.Minute, 0, -int64(time.Minute) - int64(time.Second)*120/29}, - } - for _, i := range inputs { - b.clock.Run(i.runTime) - node.RequestServed(i.reqCost) - priority := node.estimatePriority(1000000000, 0, i.futureTime, 0, false) - if priority != i.priority { - t.Fatalf("Estimated priority mismatch, want %v, got %v", i.priority, priority) - } - } -} - -func TestPositiveBalanceCounting(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - - var nodes []*nodeBalance - for i := 0; i < 100; i += 1 { - node := b.newNode(1000000) - node.SetPriceFactors(PriceFactors{1, 0, 1}, PriceFactors{1, 0, 1}) - nodes = append(nodes, node) - } - - // Allocate service token - var sum uint64 - for i := 0; i < 100; i += 1 { - amount := int64(rand.Intn(100) + 100) - b.addBalance(nodes[i], amount) - sum += uint64(amount) - } - if b.bt.TotalTokenAmount() != sum { - t.Fatalf("Invalid token amount") - } - - // Change client status - for i := 0; i < 100; i += 1 { - if rand.Intn(2) == 0 { - b.ns.SetField(nodes[i].node, b.setup.capacityField, uint64(1)) - } - } - if b.bt.TotalTokenAmount() != sum { - t.Fatalf("Invalid token amount") - } - for i := 0; i < 100; i += 1 { - if rand.Intn(2) == 0 { - b.ns.SetField(nodes[i].node, b.setup.capacityField, uint64(1)) - } - } - if b.bt.TotalTokenAmount() != sum { - t.Fatalf("Invalid token amount") - } -} - -func TestCallbackChecking(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - node := b.newNode(1000000) - node.SetPriceFactors(PriceFactors{1, 0, 1}, PriceFactors{1, 0, 1}) - - var inputs = []struct { - priority int64 - expDiff time.Duration - }{ - {500, time.Millisecond * 500}, - {0, time.Second}, - {-int64(time.Second), 2 * time.Second}, - } - b.setBalance(node, uint64(time.Second), 0) - for _, i := range inputs { - diff, _ := node.timeUntil(i.priority) - if diff != i.expDiff { - t.Fatalf("Time difference mismatch, want %v, got %v", i.expDiff, diff) - } - } -} - -func TestCallback(t *testing.T) { - t.Parallel() - - b := newBalanceTestSetup(nil, nil, nil) - defer b.stop() - node := b.newNode(1000) - node.SetPriceFactors(PriceFactors{1, 0, 1}, PriceFactors{1, 0, 1}) - - callCh := make(chan struct{}, 1) - b.setBalance(node, uint64(time.Minute), 0) - node.addCallback(balanceCallbackZero, 0, func() { callCh <- struct{}{} }) - - b.clock.Run(time.Minute) - select { - case <-callCh: - case <-time.NewTimer(time.Second).C: - t.Fatalf("Callback hasn't been called yet") - } - - b.setBalance(node, uint64(time.Minute), 0) - node.addCallback(balanceCallbackZero, 0, func() { callCh <- struct{}{} }) - node.removeCallback(balanceCallbackZero) - - b.clock.Run(time.Minute) - select { - case <-callCh: - t.Fatalf("Callback shouldn't be called") - case <-time.NewTimer(time.Millisecond * 100).C: - } -} - -func TestBalancePersistence(t *testing.T) { - t.Parallel() - - posExp := &utils.Expirer{} - negExp := &utils.Expirer{} - posExp.SetRate(0, math.Log(2)/float64(time.Hour*2)) // halves every two hours - negExp.SetRate(0, math.Log(2)/float64(time.Hour)) // halves every hour - setup := newBalanceTestSetup(nil, posExp, negExp) - - exp := func(balance *nodeBalance, expPos, expNeg uint64) { - pos, neg := balance.GetBalance() - if pos != expPos { - t.Fatalf("Positive balance incorrect, want %v, got %v", expPos, pos) - } - if neg != expNeg { - t.Fatalf("Positive balance incorrect, want %v, got %v", expPos, pos) - } - } - expTotal := func(expTotal uint64) { - total := setup.bt.TotalTokenAmount() - if total != expTotal { - t.Fatalf("Total token amount incorrect, want %v, got %v", expTotal, total) - } - } - - expTotal(0) - balance := setup.newNode(0) - expTotal(0) - setup.setBalance(balance, 16000000000, 16000000000) - exp(balance, 16000000000, 16000000000) - expTotal(16000000000) - - setup.clock.Run(time.Hour * 2) - exp(balance, 8000000000, 4000000000) - expTotal(8000000000) - setup.stop() - - // Test the functionalities after restart - setup = newBalanceTestSetup(setup.db, posExp, negExp) - expTotal(8000000000) - balance = setup.newNode(0) - exp(balance, 8000000000, 4000000000) - expTotal(8000000000) - setup.clock.Run(time.Hour * 2) - exp(balance, 4000000000, 1000000000) - expTotal(4000000000) - setup.stop() -} diff --git a/les/vflux/server/balance_tracker.go b/les/vflux/server/balance_tracker.go deleted file mode 100644 index 9695e79638..0000000000 --- a/les/vflux/server/balance_tracker.go +++ /dev/null @@ -1,300 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -const ( - posThreshold = 1000000 // minimum positive balance that is persisted in the database - negThreshold = 1000000 // minimum negative balance that is persisted in the database - persistExpirationRefresh = time.Minute * 5 // refresh period of the token expiration persistence -) - -// balanceTracker tracks positive and negative balances for connected nodes. -// After clientField is set externally, a nodeBalance is created and previous -// balance values are loaded from the database. Both balances are exponentially expired -// values. Costs are deducted from the positive balance if present, otherwise added to -// the negative balance. If the capacity is non-zero then a time cost is applied -// continuously while individual request costs are applied immediately. -// The two balances are translated into a single priority value that also depends -// on the actual capacity. -type balanceTracker struct { - setup *serverSetup - clock mclock.Clock - lock sync.Mutex - ns *nodestate.NodeStateMachine - ndb *nodeDB - posExp, negExp utils.ValueExpirer - - posExpTC, negExpTC uint64 - defaultPosFactors, defaultNegFactors PriceFactors - - active, inactive utils.ExpiredValue - balanceTimer *utils.UpdateTimer - quit chan struct{} -} - -// newBalanceTracker creates a new balanceTracker -func newBalanceTracker(ns *nodestate.NodeStateMachine, setup *serverSetup, db ethdb.KeyValueStore, clock mclock.Clock, posExp, negExp utils.ValueExpirer) *balanceTracker { - ndb := newNodeDB(db, clock) - bt := &balanceTracker{ - ns: ns, - setup: setup, - ndb: ndb, - clock: clock, - posExp: posExp, - negExp: negExp, - balanceTimer: utils.NewUpdateTimer(clock, time.Second*10), - quit: make(chan struct{}), - } - posOffset, negOffset := bt.ndb.getExpiration() - posExp.SetLogOffset(clock.Now(), posOffset) - negExp.SetLogOffset(clock.Now(), negOffset) - - // Load all persisted balance entries of priority nodes, - // calculate the total number of issued service tokens. - bt.ndb.forEachBalance(false, func(id enode.ID, balance utils.ExpiredValue) bool { - bt.inactive.AddExp(balance) - return true - }) - - ns.SubscribeField(bt.setup.capacityField, func(node *enode.Node, state nodestate.Flags, oldValue, newValue interface{}) { - n, _ := ns.GetField(node, bt.setup.balanceField).(*nodeBalance) - if n == nil { - return - } - - ov, _ := oldValue.(uint64) - nv, _ := newValue.(uint64) - if ov == 0 && nv != 0 { - n.activate() - } - if nv != 0 { - n.setCapacity(nv) - } - if ov != 0 && nv == 0 { - n.deactivate() - } - }) - ns.SubscribeField(bt.setup.clientField, func(node *enode.Node, state nodestate.Flags, oldValue, newValue interface{}) { - type peer interface { - FreeClientId() string - } - if newValue != nil { - n := bt.newNodeBalance(node, newValue.(peer).FreeClientId(), true) - bt.lock.Lock() - n.SetPriceFactors(bt.defaultPosFactors, bt.defaultNegFactors) - bt.lock.Unlock() - ns.SetFieldSub(node, bt.setup.balanceField, n) - } else { - ns.SetStateSub(node, nodestate.Flags{}, bt.setup.priorityFlag, 0) - if b, _ := ns.GetField(node, bt.setup.balanceField).(*nodeBalance); b != nil { - b.deactivate() - } - ns.SetFieldSub(node, bt.setup.balanceField, nil) - } - }) - - // The positive and negative balances of clients are stored in database - // and both of these decay exponentially over time. Delete them if the - // value is small enough. - bt.ndb.evictCallBack = bt.canDropBalance - - go func() { - for { - select { - case <-clock.After(persistExpirationRefresh): - now := clock.Now() - bt.ndb.setExpiration(posExp.LogOffset(now), negExp.LogOffset(now)) - case <-bt.quit: - return - } - } - }() - return bt -} - -// Stop saves expiration offset and unsaved node balances and shuts balanceTracker down -func (bt *balanceTracker) stop() { - now := bt.clock.Now() - bt.ndb.setExpiration(bt.posExp.LogOffset(now), bt.negExp.LogOffset(now)) - close(bt.quit) - bt.ns.ForEach(nodestate.Flags{}, nodestate.Flags{}, func(node *enode.Node, state nodestate.Flags) { - if n, ok := bt.ns.GetField(node, bt.setup.balanceField).(*nodeBalance); ok { - n.lock.Lock() - n.storeBalance(true, true) - n.lock.Unlock() - bt.ns.SetField(node, bt.setup.balanceField, nil) - } - }) - bt.ndb.close() -} - -// TotalTokenAmount returns the current total amount of service tokens in existence -func (bt *balanceTracker) TotalTokenAmount() uint64 { - bt.lock.Lock() - defer bt.lock.Unlock() - - bt.balanceTimer.Update(func(_ time.Duration) bool { - bt.active = utils.ExpiredValue{} - bt.ns.ForEach(nodestate.Flags{}, nodestate.Flags{}, func(node *enode.Node, state nodestate.Flags) { - if n, ok := bt.ns.GetField(node, bt.setup.balanceField).(*nodeBalance); ok && n.active { - pos, _ := n.GetRawBalance() - bt.active.AddExp(pos) - } - }) - return true - }) - total := bt.active - total.AddExp(bt.inactive) - return total.Value(bt.posExp.LogOffset(bt.clock.Now())) -} - -// GetPosBalanceIDs lists node IDs with an associated positive balance -func (bt *balanceTracker) GetPosBalanceIDs(start, stop enode.ID, maxCount int) (result []enode.ID) { - return bt.ndb.getPosBalanceIDs(start, stop, maxCount) -} - -// SetDefaultFactors sets the default price factors applied to subsequently connected clients -func (bt *balanceTracker) SetDefaultFactors(posFactors, negFactors PriceFactors) { - bt.lock.Lock() - bt.defaultPosFactors = posFactors - bt.defaultNegFactors = negFactors - bt.lock.Unlock() -} - -// SetExpirationTCs sets positive and negative token expiration time constants. -// Specified in seconds, 0 means infinite (no expiration). -func (bt *balanceTracker) SetExpirationTCs(pos, neg uint64) { - bt.lock.Lock() - defer bt.lock.Unlock() - - bt.posExpTC, bt.negExpTC = pos, neg - now := bt.clock.Now() - if pos > 0 { - bt.posExp.SetRate(now, 1/float64(pos*uint64(time.Second))) - } else { - bt.posExp.SetRate(now, 0) - } - if neg > 0 { - bt.negExp.SetRate(now, 1/float64(neg*uint64(time.Second))) - } else { - bt.negExp.SetRate(now, 0) - } -} - -// GetExpirationTCs returns the current positive and negative token expiration -// time constants -func (bt *balanceTracker) GetExpirationTCs() (pos, neg uint64) { - bt.lock.Lock() - defer bt.lock.Unlock() - - return bt.posExpTC, bt.negExpTC -} - -// BalanceOperation allows atomic operations on the balance of a node regardless of whether -// it is currently connected or not -func (bt *balanceTracker) BalanceOperation(id enode.ID, connAddress string, cb func(AtomicBalanceOperator)) { - bt.ns.Operation(func() { - var nb *nodeBalance - if node := bt.ns.GetNode(id); node != nil { - nb, _ = bt.ns.GetField(node, bt.setup.balanceField).(*nodeBalance) - } - if nb == nil { - node := enode.SignNull(&enr.Record{}, id) - nb = bt.newNodeBalance(node, connAddress, false) - } - cb(nb) - }) -} - -// newNodeBalance loads balances from the database and creates a nodeBalance instance -// for the given node. It also sets the priorityFlag and adds balanceCallbackZero if -// the node has a positive balance. -// Note: this function should run inside a NodeStateMachine operation -func (bt *balanceTracker) newNodeBalance(node *enode.Node, connAddress string, setFlags bool) *nodeBalance { - pb := bt.ndb.getOrNewBalance(node.ID().Bytes(), false) - nb := bt.ndb.getOrNewBalance([]byte(connAddress), true) - n := &nodeBalance{ - bt: bt, - node: node, - setFlags: setFlags, - connAddress: connAddress, - balance: balance{pos: pb, neg: nb, posExp: bt.posExp, negExp: bt.negExp}, - initTime: bt.clock.Now(), - lastUpdate: bt.clock.Now(), - } - for i := range n.callbackIndex { - n.callbackIndex[i] = -1 - } - if setFlags && n.checkPriorityStatus() { - n.bt.ns.SetStateSub(n.node, n.bt.setup.priorityFlag, nodestate.Flags{}, 0) - } - return n -} - -// storeBalance stores either a positive or a negative balance in the database -func (bt *balanceTracker) storeBalance(id []byte, neg bool, value utils.ExpiredValue) { - if bt.canDropBalance(bt.clock.Now(), neg, value) { - bt.ndb.delBalance(id, neg) // balance is small enough, drop it directly. - } else { - bt.ndb.setBalance(id, neg, value) - } -} - -// canDropBalance tells whether a positive or negative balance is below the threshold -// and therefore can be dropped from the database -func (bt *balanceTracker) canDropBalance(now mclock.AbsTime, neg bool, b utils.ExpiredValue) bool { - if neg { - return b.Value(bt.negExp.LogOffset(now)) <= negThreshold - } - return b.Value(bt.posExp.LogOffset(now)) <= posThreshold -} - -// updateTotalBalance adjusts the total balance after executing given callback. -func (bt *balanceTracker) updateTotalBalance(n *nodeBalance, callback func() bool) { - bt.lock.Lock() - defer bt.lock.Unlock() - - n.lock.Lock() - defer n.lock.Unlock() - - original, active := n.balance.pos, n.active - if !callback() { - return - } - if active { - bt.active.SubExp(original) - } else { - bt.inactive.SubExp(original) - } - if n.active { - bt.active.AddExp(n.balance.pos) - } else { - bt.inactive.AddExp(n.balance.pos) - } -} diff --git a/les/vflux/server/clientdb.go b/les/vflux/server/clientdb.go deleted file mode 100644 index a39cbec36a..0000000000 --- a/les/vflux/server/clientdb.go +++ /dev/null @@ -1,250 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "bytes" - "encoding/binary" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/lru" - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/rlp" -) - -const ( - balanceCacheLimit = 8192 // the maximum number of cached items in service token balance queue - - // nodeDBVersion is the version identifier of the node data in db - // - // Changelog: - // Version 0 => 1 - // * Replace `lastTotal` with `meta` in positive balance: version 0=>1 - // - // Version 1 => 2 - // * Positive Balance and negative balance is changed: - // * Cumulative time is replaced with expiration - nodeDBVersion = 2 - - // dbCleanupCycle is the cycle of db for useless data cleanup - dbCleanupCycle = time.Hour -) - -var ( - positiveBalancePrefix = []byte("pb:") // dbVersion(uint16 big endian) + positiveBalancePrefix + id -> balance - negativeBalancePrefix = []byte("nb:") // dbVersion(uint16 big endian) + negativeBalancePrefix + ip -> balance - expirationKey = []byte("expiration:") // dbVersion(uint16 big endian) + expirationKey -> posExp, negExp -) - -type nodeDB struct { - db ethdb.KeyValueStore - cache *lru.Cache[string, utils.ExpiredValue] - auxbuf []byte // 37-byte auxiliary buffer for key encoding - verbuf [2]byte // 2-byte auxiliary buffer for db version - evictCallBack func(mclock.AbsTime, bool, utils.ExpiredValue) bool // Callback to determine whether the balance can be evicted. - clock mclock.Clock - closeCh chan struct{} - cleanupHook func() // Test hook used for testing -} - -func newNodeDB(db ethdb.KeyValueStore, clock mclock.Clock) *nodeDB { - ndb := &nodeDB{ - db: db, - cache: lru.NewCache[string, utils.ExpiredValue](balanceCacheLimit), - auxbuf: make([]byte, 37), - clock: clock, - closeCh: make(chan struct{}), - } - binary.BigEndian.PutUint16(ndb.verbuf[:], uint16(nodeDBVersion)) - go ndb.expirer() - return ndb -} - -func (db *nodeDB) close() { - close(db.closeCh) -} - -func (db *nodeDB) getPrefix(neg bool) []byte { - prefix := positiveBalancePrefix - if neg { - prefix = negativeBalancePrefix - } - return append(db.verbuf[:], prefix...) -} - -func (db *nodeDB) key(id []byte, neg bool) []byte { - prefix := positiveBalancePrefix - if neg { - prefix = negativeBalancePrefix - } - if len(prefix)+len(db.verbuf)+len(id) > len(db.auxbuf) { - db.auxbuf = append(db.auxbuf, make([]byte, len(prefix)+len(db.verbuf)+len(id)-len(db.auxbuf))...) - } - copy(db.auxbuf[:len(db.verbuf)], db.verbuf[:]) - copy(db.auxbuf[len(db.verbuf):len(db.verbuf)+len(prefix)], prefix) - copy(db.auxbuf[len(prefix)+len(db.verbuf):len(prefix)+len(db.verbuf)+len(id)], id) - return db.auxbuf[:len(prefix)+len(db.verbuf)+len(id)] -} - -func (db *nodeDB) getExpiration() (utils.Fixed64, utils.Fixed64) { - blob, err := db.db.Get(append(db.verbuf[:], expirationKey...)) - if err != nil || len(blob) != 16 { - return 0, 0 - } - return utils.Fixed64(binary.BigEndian.Uint64(blob[:8])), utils.Fixed64(binary.BigEndian.Uint64(blob[8:16])) -} - -func (db *nodeDB) setExpiration(pos, neg utils.Fixed64) { - var buff [16]byte - binary.BigEndian.PutUint64(buff[:8], uint64(pos)) - binary.BigEndian.PutUint64(buff[8:16], uint64(neg)) - db.db.Put(append(db.verbuf[:], expirationKey...), buff[:16]) -} - -func (db *nodeDB) getOrNewBalance(id []byte, neg bool) utils.ExpiredValue { - key := db.key(id, neg) - item, exist := db.cache.Get(string(key)) - if exist { - return item - } - - var b utils.ExpiredValue - enc, err := db.db.Get(key) - if err != nil || len(enc) == 0 { - return b - } - if err := rlp.DecodeBytes(enc, &b); err != nil { - log.Crit("Failed to decode positive balance", "err", err) - } - db.cache.Add(string(key), b) - return b -} - -func (db *nodeDB) setBalance(id []byte, neg bool, b utils.ExpiredValue) { - key := db.key(id, neg) - enc, err := rlp.EncodeToBytes(&(b)) - if err != nil { - log.Crit("Failed to encode positive balance", "err", err) - } - db.db.Put(key, enc) - db.cache.Add(string(key), b) -} - -func (db *nodeDB) delBalance(id []byte, neg bool) { - key := db.key(id, neg) - db.db.Delete(key) - db.cache.Remove(string(key)) -} - -// getPosBalanceIDs returns a lexicographically ordered list of IDs of accounts -// with a positive balance -func (db *nodeDB) getPosBalanceIDs(start, stop enode.ID, maxCount int) (result []enode.ID) { - if maxCount <= 0 { - return - } - prefix := db.getPrefix(false) - keylen := len(prefix) + len(enode.ID{}) - - it := db.db.NewIterator(prefix, start.Bytes()) - defer it.Release() - - for it.Next() { - var id enode.ID - if len(it.Key()) != keylen { - return - } - copy(id[:], it.Key()[keylen-len(id):]) - if bytes.Compare(id.Bytes(), stop.Bytes()) >= 0 { - return - } - result = append(result, id) - if len(result) == maxCount { - return - } - } - return -} - -// forEachBalance iterates all balances and passes values to callback. -func (db *nodeDB) forEachBalance(neg bool, callback func(id enode.ID, balance utils.ExpiredValue) bool) { - prefix := db.getPrefix(neg) - keylen := len(prefix) + len(enode.ID{}) - - it := db.db.NewIterator(prefix, nil) - defer it.Release() - - for it.Next() { - var id enode.ID - if len(it.Key()) != keylen { - return - } - copy(id[:], it.Key()[keylen-len(id):]) - - var b utils.ExpiredValue - if err := rlp.DecodeBytes(it.Value(), &b); err != nil { - continue - } - if !callback(id, b) { - return - } - } -} - -func (db *nodeDB) expirer() { - for { - select { - case <-db.clock.After(dbCleanupCycle): - db.expireNodes() - case <-db.closeCh: - return - } - } -} - -// expireNodes iterates the whole node db and checks whether the -// token balances can be deleted. -func (db *nodeDB) expireNodes() { - var ( - visited int - deleted int - start = time.Now() - ) - for _, neg := range []bool{false, true} { - iter := db.db.NewIterator(db.getPrefix(neg), nil) - for iter.Next() { - visited++ - var balance utils.ExpiredValue - if err := rlp.DecodeBytes(iter.Value(), &balance); err != nil { - log.Crit("Failed to decode negative balance", "err", err) - } - if db.evictCallBack != nil && db.evictCallBack(db.clock.Now(), neg, balance) { - deleted++ - db.db.Delete(iter.Key()) - } - } - } - // Invoke testing hook if it's not nil. - if db.cleanupHook != nil { - db.cleanupHook() - } - log.Debug("Expire nodes", "visited", visited, "deleted", deleted, "elapsed", common.PrettyDuration(time.Since(start))) -} diff --git a/les/vflux/server/clientdb_test.go b/les/vflux/server/clientdb_test.go deleted file mode 100644 index caa4384e19..0000000000 --- a/les/vflux/server/clientdb_test.go +++ /dev/null @@ -1,148 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "reflect" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/p2p/enode" -) - -func expval(v uint64) utils.ExpiredValue { - return utils.ExpiredValue{Base: v} -} - -func TestNodeDB(t *testing.T) { - t.Parallel() - - ndb := newNodeDB(rawdb.NewMemoryDatabase(), mclock.System{}) - defer ndb.close() - - var cases = []struct { - id enode.ID - ip string - balance utils.ExpiredValue - positive bool - }{ - {enode.ID{0x00, 0x01, 0x02}, "", expval(100), true}, - {enode.ID{0x00, 0x01, 0x02}, "", expval(200), true}, - {enode.ID{}, "127.0.0.1", expval(100), false}, - {enode.ID{}, "127.0.0.1", expval(200), false}, - } - for _, c := range cases { - if c.positive { - ndb.setBalance(c.id.Bytes(), false, c.balance) - if pb := ndb.getOrNewBalance(c.id.Bytes(), false); !reflect.DeepEqual(pb, c.balance) { - t.Fatalf("Positive balance mismatch, want %v, got %v", c.balance, pb) - } - } else { - ndb.setBalance([]byte(c.ip), true, c.balance) - if nb := ndb.getOrNewBalance([]byte(c.ip), true); !reflect.DeepEqual(nb, c.balance) { - t.Fatalf("Negative balance mismatch, want %v, got %v", c.balance, nb) - } - } - } - for _, c := range cases { - if c.positive { - ndb.delBalance(c.id.Bytes(), false) - if pb := ndb.getOrNewBalance(c.id.Bytes(), false); !reflect.DeepEqual(pb, utils.ExpiredValue{}) { - t.Fatalf("Positive balance mismatch, want %v, got %v", utils.ExpiredValue{}, pb) - } - } else { - ndb.delBalance([]byte(c.ip), true) - if nb := ndb.getOrNewBalance([]byte(c.ip), true); !reflect.DeepEqual(nb, utils.ExpiredValue{}) { - t.Fatalf("Negative balance mismatch, want %v, got %v", utils.ExpiredValue{}, nb) - } - } - } - posExp, negExp := utils.Fixed64(1000), utils.Fixed64(2000) - ndb.setExpiration(posExp, negExp) - if pos, neg := ndb.getExpiration(); pos != posExp || neg != negExp { - t.Fatalf("Expiration mismatch, want %v / %v, got %v / %v", posExp, negExp, pos, neg) - } - /* curBalance := currencyBalance{typ: "ETH", amount: 10000} - ndb.setCurrencyBalance(enode.ID{0x01, 0x02}, curBalance) - if got := ndb.getCurrencyBalance(enode.ID{0x01, 0x02}); !reflect.DeepEqual(got, curBalance) { - t.Fatalf("Currency balance mismatch, want %v, got %v", curBalance, got) - }*/ -} - -func TestNodeDBExpiration(t *testing.T) { - t.Parallel() - - var ( - iterated int - done = make(chan struct{}, 1) - ) - callback := func(now mclock.AbsTime, neg bool, b utils.ExpiredValue) bool { - iterated += 1 - return true - } - clock := &mclock.Simulated{} - ndb := newNodeDB(rawdb.NewMemoryDatabase(), clock) - defer ndb.close() - ndb.evictCallBack = callback - ndb.cleanupHook = func() { done <- struct{}{} } - - var cases = []struct { - id []byte - neg bool - balance utils.ExpiredValue - }{ - {[]byte{0x01, 0x02}, false, expval(1)}, - {[]byte{0x03, 0x04}, false, expval(1)}, - {[]byte{0x05, 0x06}, false, expval(1)}, - {[]byte{0x07, 0x08}, false, expval(1)}, - - {[]byte("127.0.0.1"), true, expval(1)}, - {[]byte("127.0.0.2"), true, expval(1)}, - {[]byte("127.0.0.3"), true, expval(1)}, - {[]byte("127.0.0.4"), true, expval(1)}, - } - for _, c := range cases { - ndb.setBalance(c.id, c.neg, c.balance) - } - clock.WaitForTimers(1) - clock.Run(time.Hour + time.Minute) - select { - case <-done: - case <-time.NewTimer(time.Second).C: - t.Fatalf("timeout") - } - if iterated != 8 { - t.Fatalf("Failed to evict useless balances, want %v, got %d", 8, iterated) - } - - for _, c := range cases { - ndb.setBalance(c.id, c.neg, c.balance) - } - clock.WaitForTimers(1) - clock.Run(time.Hour + time.Minute) - select { - case <-done: - case <-time.NewTimer(time.Second).C: - t.Fatalf("timeout") - } - if iterated != 16 { - t.Fatalf("Failed to evict useless balances, want %v, got %d", 16, iterated) - } -} diff --git a/les/vflux/server/clientpool.go b/les/vflux/server/clientpool.go deleted file mode 100644 index a525f86368..0000000000 --- a/les/vflux/server/clientpool.go +++ /dev/null @@ -1,328 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "errors" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/les/vflux" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/nodestate" - "github.com/ethereum/go-ethereum/rlp" -) - -var ( - ErrNotConnected = errors.New("client not connected") - ErrNoPriority = errors.New("priority too low to raise capacity") - ErrCantFindMaximum = errors.New("unable to find maximum allowed capacity") -) - -// ClientPool implements a client database that assigns a priority to each client -// based on a positive and negative balance. Positive balance is externally assigned -// to prioritized clients and is decreased with connection time and processed -// requests (unless the price factors are zero). If the positive balance is zero -// then negative balance is accumulated. -// -// Balance tracking and priority calculation for connected clients is done by -// balanceTracker. PriorityQueue ensures that clients with the lowest positive or -// highest negative balance get evicted when the total capacity allowance is full -// and new clients with a better balance want to connect. -// -// Already connected nodes receive a small bias in their favor in order to avoid -// accepting and instantly kicking out clients. In theory, we try to ensure that -// each client can have several minutes of connection time. -// -// Balances of disconnected clients are stored in nodeDB including positive balance -// and negative balance. Both positive balance and negative balance will decrease -// exponentially. If the balance is low enough, then the record will be dropped. -type ClientPool struct { - *priorityPool - *balanceTracker - - setup *serverSetup - clock mclock.Clock - ns *nodestate.NodeStateMachine - synced func() bool - - lock sync.RWMutex - connectedBias time.Duration - - minCap uint64 // the minimal capacity value allowed for any client - capReqNode *enode.Node // node that is requesting capacity change; only used inside NSM operation -} - -// clientPeer represents a peer in the client pool. None of the callbacks should block. -type clientPeer interface { - Node() *enode.Node - FreeClientId() string // unique id for non-priority clients (typically a prefix of the network address) - InactiveAllowance() time.Duration // disconnection timeout for inactive non-priority peers - UpdateCapacity(newCap uint64, requested bool) // signals a capacity update (requested is true if it is a result of a SetCapacity call on the given peer - Disconnect() // initiates disconnection (Unregister should always be called) -} - -// NewClientPool creates a new client pool -func NewClientPool(balanceDb ethdb.KeyValueStore, minCap uint64, connectedBias time.Duration, clock mclock.Clock, synced func() bool) *ClientPool { - setup := newServerSetup() - ns := nodestate.NewNodeStateMachine(nil, nil, clock, setup.setup) - cp := &ClientPool{ - priorityPool: newPriorityPool(ns, setup, clock, minCap, connectedBias, 4, 100), - balanceTracker: newBalanceTracker(ns, setup, balanceDb, clock, &utils.Expirer{}, &utils.Expirer{}), - setup: setup, - ns: ns, - clock: clock, - minCap: minCap, - connectedBias: connectedBias, - synced: synced, - } - - ns.SubscribeState(nodestate.MergeFlags(setup.activeFlag, setup.inactiveFlag, setup.priorityFlag), func(node *enode.Node, oldState, newState nodestate.Flags) { - if newState.Equals(setup.inactiveFlag) { - // set timeout for non-priority inactive client - var timeout time.Duration - if c, ok := ns.GetField(node, setup.clientField).(clientPeer); ok { - timeout = c.InactiveAllowance() - } - ns.AddTimeout(node, setup.inactiveFlag, timeout) - } - if oldState.Equals(setup.inactiveFlag) && newState.Equals(setup.inactiveFlag.Or(setup.priorityFlag)) { - ns.SetStateSub(node, setup.inactiveFlag, nodestate.Flags{}, 0) // priority gained; remove timeout - } - if newState.Equals(setup.activeFlag) { - // active with no priority; limit capacity to minCap - cap, _ := ns.GetField(node, setup.capacityField).(uint64) - if cap > minCap { - cp.requestCapacity(node, minCap, minCap, 0) - } - } - if newState.Equals(nodestate.Flags{}) { - if c, ok := ns.GetField(node, setup.clientField).(clientPeer); ok { - c.Disconnect() - } - } - }) - - ns.SubscribeField(setup.capacityField, func(node *enode.Node, state nodestate.Flags, oldValue, newValue interface{}) { - if c, ok := ns.GetField(node, setup.clientField).(clientPeer); ok { - newCap, _ := newValue.(uint64) - c.UpdateCapacity(newCap, node == cp.capReqNode) - } - }) - - // add metrics - cp.ns.SubscribeState(nodestate.MergeFlags(cp.setup.activeFlag, cp.setup.inactiveFlag), func(node *enode.Node, oldState, newState nodestate.Flags) { - if oldState.IsEmpty() && !newState.IsEmpty() { - clientConnectedMeter.Mark(1) - } - if !oldState.IsEmpty() && newState.IsEmpty() { - clientDisconnectedMeter.Mark(1) - } - if oldState.HasNone(cp.setup.activeFlag) && oldState.HasAll(cp.setup.activeFlag) { - clientActivatedMeter.Mark(1) - } - if oldState.HasAll(cp.setup.activeFlag) && oldState.HasNone(cp.setup.activeFlag) { - clientDeactivatedMeter.Mark(1) - } - activeCount, activeCap := cp.Active() - totalActiveCountGauge.Update(int64(activeCount)) - totalActiveCapacityGauge.Update(int64(activeCap)) - totalInactiveCountGauge.Update(int64(cp.Inactive())) - }) - return cp -} - -// Start starts the client pool. Should be called before Register/Unregister. -func (cp *ClientPool) Start() { - cp.ns.Start() -} - -// Stop shuts the client pool down. The clientPeer interface callbacks will not be called -// after Stop. Register calls will return nil. -func (cp *ClientPool) Stop() { - cp.balanceTracker.stop() - cp.ns.Stop() -} - -// Register registers the peer into the client pool. If the peer has insufficient -// priority and remains inactive for longer than the allowed timeout then it will be -// disconnected by calling the Disconnect function of the clientPeer interface. -func (cp *ClientPool) Register(peer clientPeer) ConnectedBalance { - cp.ns.SetField(peer.Node(), cp.setup.clientField, peerWrapper{peer}) - balance, _ := cp.ns.GetField(peer.Node(), cp.setup.balanceField).(*nodeBalance) - return balance -} - -// Unregister removes the peer from the client pool -func (cp *ClientPool) Unregister(peer clientPeer) { - cp.ns.SetField(peer.Node(), cp.setup.clientField, nil) -} - -// SetConnectedBias sets the connection bias, which is applied to already connected clients -// So that already connected client won't be kicked out very soon and we can ensure all -// connected clients can have enough time to request or sync some data. -func (cp *ClientPool) SetConnectedBias(bias time.Duration) { - cp.lock.Lock() - cp.connectedBias = bias - cp.setActiveBias(bias) - cp.lock.Unlock() -} - -// SetCapacity sets the assigned capacity of a connected client -func (cp *ClientPool) SetCapacity(node *enode.Node, reqCap uint64, bias time.Duration, requested bool) (capacity uint64, err error) { - cp.lock.RLock() - if cp.connectedBias > bias { - bias = cp.connectedBias - } - cp.lock.RUnlock() - - cp.ns.Operation(func() { - balance, _ := cp.ns.GetField(node, cp.setup.balanceField).(*nodeBalance) - if balance == nil { - err = ErrNotConnected - return - } - capacity, _ = cp.ns.GetField(node, cp.setup.capacityField).(uint64) - if capacity == 0 { - // if the client is inactive then it has insufficient priority for the minimal capacity - // (will be activated automatically with minCap when possible) - return - } - if reqCap < cp.minCap { - // can't request less than minCap; switching between 0 (inactive state) and minCap is - // performed by the server automatically as soon as necessary/possible - reqCap = cp.minCap - } - if reqCap > cp.minCap && cp.ns.GetState(node).HasNone(cp.setup.priorityFlag) { - err = ErrNoPriority - return - } - if reqCap == capacity { - return - } - if requested { - // mark the requested node so that the UpdateCapacity callback can signal - // whether the update is the direct result of a SetCapacity call on the given node - cp.capReqNode = node - defer func() { - cp.capReqNode = nil - }() - } - - var minTarget, maxTarget uint64 - if reqCap > capacity { - // Estimate maximum available capacity at the current priority level and request - // the estimated amount. - // Note: requestCapacity could find the highest available capacity between the - // current and the requested capacity but it could cost a lot of iterations with - // fine step adjustment if the requested capacity is very high. By doing a quick - // estimation of the maximum available capacity based on the capacity curve we - // can limit the number of required iterations. - curve := cp.getCapacityCurve().exclude(node.ID()) - maxTarget = curve.maxCapacity(func(capacity uint64) int64 { - return balance.estimatePriority(capacity, 0, 0, bias, false) - }) - if maxTarget < reqCap { - return - } - maxTarget = reqCap - - // Specify a narrow target range that allows a limited number of fine step - // iterations - minTarget = maxTarget - maxTarget/20 - if minTarget < capacity { - minTarget = capacity - } - } else { - minTarget, maxTarget = reqCap, reqCap - } - if newCap := cp.requestCapacity(node, minTarget, maxTarget, bias); newCap >= minTarget && newCap <= maxTarget { - capacity = newCap - return - } - // we should be able to find the maximum allowed capacity in a few iterations - log.Error("Unable to find maximum allowed capacity") - err = ErrCantFindMaximum - }) - return -} - -// serveCapQuery serves a vflux capacity query. It receives multiple token amount values -// and a bias time value. For each given token amount it calculates the maximum achievable -// capacity in case the amount is added to the balance. -func (cp *ClientPool) serveCapQuery(id enode.ID, freeID string, data []byte) []byte { - var req vflux.CapacityQueryReq - if rlp.DecodeBytes(data, &req) != nil { - return nil - } - if l := len(req.AddTokens); l == 0 || l > vflux.CapacityQueryMaxLen { - return nil - } - result := make(vflux.CapacityQueryReply, len(req.AddTokens)) - if !cp.synced() { - capacityQueryZeroMeter.Mark(1) - reply, _ := rlp.EncodeToBytes(&result) - return reply - } - - bias := time.Second * time.Duration(req.Bias) - cp.lock.RLock() - if cp.connectedBias > bias { - bias = cp.connectedBias - } - cp.lock.RUnlock() - - // use capacityCurve to answer request for multiple newly bought token amounts - curve := cp.getCapacityCurve().exclude(id) - cp.BalanceOperation(id, freeID, func(balance AtomicBalanceOperator) { - pb, _ := balance.GetBalance() - for i, addTokens := range req.AddTokens { - add := addTokens.Int64() - result[i] = curve.maxCapacity(func(capacity uint64) int64 { - return balance.estimatePriority(capacity, add, 0, bias, false) / int64(capacity) - }) - if add <= 0 && uint64(-add) >= pb && result[i] > cp.minCap { - result[i] = cp.minCap - } - if result[i] < cp.minCap { - result[i] = 0 - } - } - }) - // add first result to metrics (don't care about priority client multi-queries yet) - if result[0] == 0 { - capacityQueryZeroMeter.Mark(1) - } else { - capacityQueryNonZeroMeter.Mark(1) - } - reply, _ := rlp.EncodeToBytes(&result) - return reply -} - -// Handle implements Service -func (cp *ClientPool) Handle(id enode.ID, address string, name string, data []byte) []byte { - switch name { - case vflux.CapacityQueryName: - return cp.serveCapQuery(id, address, data) - default: - return nil - } -} diff --git a/les/vflux/server/clientpool_test.go b/les/vflux/server/clientpool_test.go deleted file mode 100644 index 7319be0824..0000000000 --- a/les/vflux/server/clientpool_test.go +++ /dev/null @@ -1,640 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "fmt" - "math/rand" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -const defaultConnectedBias = time.Minute * 3 - -func TestClientPoolL10C100Free(t *testing.T) { - t.Parallel() - - testClientPool(t, 10, 100, 0, true) -} - -func TestClientPoolL40C200Free(t *testing.T) { - t.Parallel() - - testClientPool(t, 40, 200, 0, true) -} - -func TestClientPoolL100C300Free(t *testing.T) { - t.Parallel() - - testClientPool(t, 100, 300, 0, true) -} - -func TestClientPoolL10C100P4(t *testing.T) { - t.Parallel() - - testClientPool(t, 10, 100, 4, false) -} - -func TestClientPoolL40C200P30(t *testing.T) { - t.Parallel() - - testClientPool(t, 40, 200, 30, false) -} - -func TestClientPoolL100C300P20(t *testing.T) { - t.Parallel() - - testClientPool(t, 100, 300, 20, false) -} - -const testClientPoolTicks = 100000 - -type poolTestPeer struct { - node *enode.Node - index int - disconnCh chan int - cap uint64 - inactiveAllowed bool -} - -func newPoolTestPeer(i int, disconnCh chan int) *poolTestPeer { - return &poolTestPeer{ - index: i, - disconnCh: disconnCh, - node: enode.SignNull(&enr.Record{}, enode.ID{byte(i % 256), byte(i >> 8)}), - } -} - -func (i *poolTestPeer) Node() *enode.Node { - return i.node -} - -func (i *poolTestPeer) FreeClientId() string { - return fmt.Sprintf("addr #%d", i.index) -} - -func (i *poolTestPeer) InactiveAllowance() time.Duration { - if i.inactiveAllowed { - return time.Second * 10 - } - return 0 -} - -func (i *poolTestPeer) UpdateCapacity(capacity uint64, requested bool) { - i.cap = capacity -} - -func (i *poolTestPeer) Disconnect() { - if i.disconnCh == nil { - return - } - id := i.node.ID() - i.disconnCh <- int(id[0]) + int(id[1])<<8 -} - -func getBalance(pool *ClientPool, p *poolTestPeer) (pos, neg uint64) { - pool.BalanceOperation(p.node.ID(), p.FreeClientId(), func(nb AtomicBalanceOperator) { - pos, neg = nb.GetBalance() - }) - return -} - -func addBalance(pool *ClientPool, id enode.ID, amount int64) { - pool.BalanceOperation(id, "", func(nb AtomicBalanceOperator) { - nb.AddBalance(amount) - }) -} - -func checkDiff(a, b uint64) bool { - maxDiff := (a + b) / 2000 - if maxDiff < 1 { - maxDiff = 1 - } - return a > b+maxDiff || b > a+maxDiff -} - -func connect(pool *ClientPool, peer *poolTestPeer) uint64 { - pool.Register(peer) - return peer.cap -} - -func disconnect(pool *ClientPool, peer *poolTestPeer) { - pool.Unregister(peer) -} - -func alwaysTrueFn() bool { - return true -} - -func testClientPool(t *testing.T, activeLimit, clientCount, paidCount int, randomDisconnect bool) { - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - connected = make([]bool, clientCount) - connTicks = make([]int, clientCount) - disconnCh = make(chan int, clientCount) - pool = NewClientPool(db, 1, 0, &clock, alwaysTrueFn) - ) - pool.Start() - pool.SetExpirationTCs(0, 1000) - - pool.SetLimits(uint64(activeLimit), uint64(activeLimit)) - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - // pool should accept new peers up to its connected limit - for i := 0; i < activeLimit; i++ { - if cap := connect(pool, newPoolTestPeer(i, disconnCh)); cap != 0 { - connected[i] = true - } else { - t.Fatalf("Test peer #%d rejected", i) - } - } - // randomly connect and disconnect peers, expect to have a similar total connection time at the end - for tickCounter := 0; tickCounter < testClientPoolTicks; tickCounter++ { - clock.Run(1 * time.Second) - - if tickCounter == testClientPoolTicks/4 { - // give a positive balance to some of the peers - amount := testClientPoolTicks / 2 * int64(time.Second) // enough for half of the simulation period - for i := 0; i < paidCount; i++ { - addBalance(pool, newPoolTestPeer(i, disconnCh).node.ID(), amount) - } - } - - i := rand.Intn(clientCount) - if connected[i] { - if randomDisconnect { - disconnect(pool, newPoolTestPeer(i, disconnCh)) - connected[i] = false - connTicks[i] += tickCounter - } - } else { - if cap := connect(pool, newPoolTestPeer(i, disconnCh)); cap != 0 { - connected[i] = true - connTicks[i] -= tickCounter - } else { - disconnect(pool, newPoolTestPeer(i, disconnCh)) - } - } - pollDisconnects: - for { - select { - case i := <-disconnCh: - disconnect(pool, newPoolTestPeer(i, disconnCh)) - if connected[i] { - connTicks[i] += tickCounter - connected[i] = false - } - default: - break pollDisconnects - } - } - } - - expTicks := testClientPoolTicks/2*activeLimit/clientCount + testClientPoolTicks/2*(activeLimit-paidCount)/(clientCount-paidCount) - expMin := expTicks - expTicks/5 - expMax := expTicks + expTicks/5 - paidTicks := testClientPoolTicks/2*activeLimit/clientCount + testClientPoolTicks/2 - paidMin := paidTicks - paidTicks/5 - paidMax := paidTicks + paidTicks/5 - - // check if the total connected time of peers are all in the expected range - for i, c := range connected { - if c { - connTicks[i] += testClientPoolTicks - } - min, max := expMin, expMax - if i < paidCount { - // expect a higher amount for clients with a positive balance - min, max = paidMin, paidMax - } - if connTicks[i] < min || connTicks[i] > max { - t.Errorf("Total connected time of test node #%d (%d) outside expected range (%d to %d)", i, connTicks[i], min, max) - } - } - pool.Stop() -} - -func testPriorityConnect(t *testing.T, pool *ClientPool, p *poolTestPeer, cap uint64, expSuccess bool) { - if cap := connect(pool, p); cap == 0 { - if expSuccess { - t.Fatalf("Failed to connect paid client") - } else { - return - } - } - if newCap, _ := pool.SetCapacity(p.node, cap, defaultConnectedBias, true); newCap != cap { - if expSuccess { - t.Fatalf("Failed to raise capacity of paid client") - } else { - return - } - } - if !expSuccess { - t.Fatalf("Should reject high capacity paid client") - } -} - -func TestConnectPaidClient(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(10, uint64(10)) - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - // Add balance for an external client and mark it as paid client - addBalance(pool, newPoolTestPeer(0, nil).node.ID(), int64(time.Minute)) - testPriorityConnect(t, pool, newPoolTestPeer(0, nil), 10, true) -} - -func TestConnectPaidClientToSmallPool(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(10, uint64(10)) // Total capacity limit is 10 - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - // Add balance for an external client and mark it as paid client - addBalance(pool, newPoolTestPeer(0, nil).node.ID(), int64(time.Minute)) - - // connect a fat paid client to pool, should reject it. - testPriorityConnect(t, pool, newPoolTestPeer(0, nil), 100, false) -} - -func TestConnectPaidClientToFullPool(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(10, uint64(10)) // Total capacity limit is 10 - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - for i := 0; i < 10; i++ { - addBalance(pool, newPoolTestPeer(i, nil).node.ID(), int64(time.Second*20)) - connect(pool, newPoolTestPeer(i, nil)) - } - addBalance(pool, newPoolTestPeer(11, nil).node.ID(), int64(time.Second*2)) // Add low balance to new paid client - if cap := connect(pool, newPoolTestPeer(11, nil)); cap != 0 { - t.Fatalf("Low balance paid client should be rejected") - } - clock.Run(time.Second) - addBalance(pool, newPoolTestPeer(12, nil).node.ID(), int64(time.Minute*5)) // Add high balance to new paid client - if cap := connect(pool, newPoolTestPeer(12, nil)); cap == 0 { - t.Fatalf("High balance paid client should be accepted") - } -} - -func TestPaidClientKickedOut(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - kickedCh = make(chan int, 100) - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - pool.SetExpirationTCs(0, 0) - defer pool.Stop() - pool.SetLimits(10, uint64(10)) // Total capacity limit is 10 - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - for i := 0; i < 10; i++ { - addBalance(pool, newPoolTestPeer(i, kickedCh).node.ID(), 10000000000) // 10 second allowance - connect(pool, newPoolTestPeer(i, kickedCh)) - clock.Run(time.Millisecond) - } - clock.Run(defaultConnectedBias + time.Second*11) - if cap := connect(pool, newPoolTestPeer(11, kickedCh)); cap == 0 { - t.Fatalf("Free client should be accepted") - } - clock.Run(0) - select { - case id := <-kickedCh: - if id != 0 { - t.Fatalf("Kicked client mismatch, want %v, got %v", 0, id) - } - default: - t.Fatalf("timeout") - } -} - -func TestConnectFreeClient(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(10, uint64(10)) - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - if cap := connect(pool, newPoolTestPeer(0, nil)); cap == 0 { - t.Fatalf("Failed to connect free client") - } - testPriorityConnect(t, pool, newPoolTestPeer(0, nil), 2, false) -} - -func TestConnectFreeClientToFullPool(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(10, uint64(10)) // Total capacity limit is 10 - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - for i := 0; i < 10; i++ { - connect(pool, newPoolTestPeer(i, nil)) - } - if cap := connect(pool, newPoolTestPeer(11, nil)); cap != 0 { - t.Fatalf("New free client should be rejected") - } - clock.Run(time.Minute) - if cap := connect(pool, newPoolTestPeer(12, nil)); cap != 0 { - t.Fatalf("New free client should be rejected") - } - clock.Run(time.Millisecond) - clock.Run(4 * time.Minute) - if cap := connect(pool, newPoolTestPeer(13, nil)); cap == 0 { - t.Fatalf("Old client connects more than 5min should be kicked") - } -} - -func TestFreeClientKickedOut(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - kicked = make(chan int, 100) - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(10, uint64(10)) // Total capacity limit is 10 - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - for i := 0; i < 10; i++ { - connect(pool, newPoolTestPeer(i, kicked)) - clock.Run(time.Millisecond) - } - if cap := connect(pool, newPoolTestPeer(10, kicked)); cap != 0 { - t.Fatalf("New free client should be rejected") - } - clock.Run(0) - select { - case <-kicked: - default: - t.Fatalf("timeout") - } - disconnect(pool, newPoolTestPeer(10, kicked)) - clock.Run(5 * time.Minute) - for i := 0; i < 10; i++ { - connect(pool, newPoolTestPeer(i+10, kicked)) - } - clock.Run(0) - - for i := 0; i < 10; i++ { - select { - case id := <-kicked: - if id >= 10 { - t.Fatalf("Old client should be kicked, now got: %d", id) - } - default: - t.Fatalf("timeout") - } - } -} - -func TestPositiveBalanceCalculation(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - kicked = make(chan int, 10) - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(10, uint64(10)) // Total capacity limit is 10 - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - addBalance(pool, newPoolTestPeer(0, kicked).node.ID(), int64(time.Minute*3)) - testPriorityConnect(t, pool, newPoolTestPeer(0, kicked), 10, true) - clock.Run(time.Minute) - - disconnect(pool, newPoolTestPeer(0, kicked)) - pb, _ := getBalance(pool, newPoolTestPeer(0, kicked)) - if checkDiff(pb, uint64(time.Minute*2)) { - t.Fatalf("Positive balance mismatch, want %v, got %v", uint64(time.Minute*2), pb) - } -} - -func TestDowngradePriorityClient(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - kicked = make(chan int, 10) - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(10, uint64(10)) // Total capacity limit is 10 - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 1}) - - p := newPoolTestPeer(0, kicked) - addBalance(pool, p.node.ID(), int64(time.Minute)) - testPriorityConnect(t, pool, p, 10, true) - if p.cap != 10 { - t.Fatalf("The capacity of priority peer hasn't been updated, got: %d", p.cap) - } - - clock.Run(time.Minute) // All positive balance should be used up. - time.Sleep(300 * time.Millisecond) // Ensure the callback is called - if p.cap != 1 { - t.Fatalf("The capcacity of peer should be downgraded, got: %d", p.cap) - } - pb, _ := getBalance(pool, newPoolTestPeer(0, kicked)) - if pb != 0 { - t.Fatalf("Positive balance mismatch, want %v, got %v", 0, pb) - } - - addBalance(pool, newPoolTestPeer(0, kicked).node.ID(), int64(time.Minute)) - pb, _ = getBalance(pool, newPoolTestPeer(0, kicked)) - if checkDiff(pb, uint64(time.Minute)) { - t.Fatalf("Positive balance mismatch, want %v, got %v", uint64(time.Minute), pb) - } -} - -func TestNegativeBalanceCalculation(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetExpirationTCs(0, 3600) - pool.SetLimits(10, uint64(10)) // Total capacity limit is 10 - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1e-3, CapacityFactor: 0, RequestFactor: 1}, PriceFactors{TimeFactor: 1e-3, CapacityFactor: 0, RequestFactor: 1}) - - for i := 0; i < 10; i++ { - connect(pool, newPoolTestPeer(i, nil)) - } - clock.Run(time.Second) - - for i := 0; i < 10; i++ { - disconnect(pool, newPoolTestPeer(i, nil)) - _, nb := getBalance(pool, newPoolTestPeer(i, nil)) - if nb != 0 { - t.Fatalf("Short connection shouldn't be recorded") - } - } - for i := 0; i < 10; i++ { - connect(pool, newPoolTestPeer(i, nil)) - } - clock.Run(time.Minute) - for i := 0; i < 10; i++ { - disconnect(pool, newPoolTestPeer(i, nil)) - _, nb := getBalance(pool, newPoolTestPeer(i, nil)) - exp := uint64(time.Minute) / 1000 - exp -= exp / 120 // correct for negative balance expiration - if checkDiff(nb, exp) { - t.Fatalf("Negative balance mismatch, want %v, got %v", exp, nb) - } - } -} - -func TestInactiveClient(t *testing.T) { - t.Parallel() - - var ( - clock mclock.Simulated - db = rawdb.NewMemoryDatabase() - ) - pool := NewClientPool(db, 1, defaultConnectedBias, &clock, alwaysTrueFn) - pool.Start() - defer pool.Stop() - pool.SetLimits(2, uint64(2)) - - p1 := newPoolTestPeer(1, nil) - p1.inactiveAllowed = true - p2 := newPoolTestPeer(2, nil) - p2.inactiveAllowed = true - p3 := newPoolTestPeer(3, nil) - p3.inactiveAllowed = true - addBalance(pool, p1.node.ID(), 1000*int64(time.Second)) - addBalance(pool, p3.node.ID(), 2000*int64(time.Second)) - // p1: 1000 p2: 0 p3: 2000 - p1.cap = connect(pool, p1) - if p1.cap != 1 { - t.Fatalf("Failed to connect peer #1") - } - p2.cap = connect(pool, p2) - if p2.cap != 1 { - t.Fatalf("Failed to connect peer #2") - } - p3.cap = connect(pool, p3) - if p3.cap != 1 { - t.Fatalf("Failed to connect peer #3") - } - if p2.cap != 0 { - t.Fatalf("Failed to deactivate peer #2") - } - addBalance(pool, p2.node.ID(), 3000*int64(time.Second)) - // p1: 1000 p2: 3000 p3: 2000 - if p2.cap != 1 { - t.Fatalf("Failed to activate peer #2") - } - if p1.cap != 0 { - t.Fatalf("Failed to deactivate peer #1") - } - addBalance(pool, p2.node.ID(), -2500*int64(time.Second)) - // p1: 1000 p2: 500 p3: 2000 - if p1.cap != 1 { - t.Fatalf("Failed to activate peer #1") - } - if p2.cap != 0 { - t.Fatalf("Failed to deactivate peer #2") - } - pool.SetDefaultFactors(PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 0}, PriceFactors{TimeFactor: 1, CapacityFactor: 0, RequestFactor: 0}) - p4 := newPoolTestPeer(4, nil) - addBalance(pool, p4.node.ID(), 1500*int64(time.Second)) - // p1: 1000 p2: 500 p3: 2000 p4: 1500 - p4.cap = connect(pool, p4) - if p4.cap != 1 { - t.Fatalf("Failed to activate peer #4") - } - if p1.cap != 0 { - t.Fatalf("Failed to deactivate peer #1") - } - clock.Run(time.Second * 600) - // manually trigger a check to avoid a long real-time wait - pool.ns.SetState(p1.node, pool.setup.updateFlag, nodestate.Flags{}, 0) - pool.ns.SetState(p1.node, nodestate.Flags{}, pool.setup.updateFlag, 0) - // p1: 1000 p2: 500 p3: 2000 p4: 900 - if p1.cap != 1 { - t.Fatalf("Failed to activate peer #1") - } - if p4.cap != 0 { - t.Fatalf("Failed to deactivate peer #4") - } - disconnect(pool, p2) - disconnect(pool, p4) - addBalance(pool, p1.node.ID(), -1000*int64(time.Second)) - if p1.cap != 1 { - t.Fatalf("Should not deactivate peer #1") - } - if p2.cap != 0 { - t.Fatalf("Should not activate peer #2") - } -} diff --git a/les/vflux/server/metrics.go b/les/vflux/server/metrics.go deleted file mode 100644 index 680aebe2ea..0000000000 --- a/les/vflux/server/metrics.go +++ /dev/null @@ -1,35 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "github.com/ethereum/go-ethereum/metrics" -) - -var ( - totalActiveCapacityGauge = metrics.NewRegisteredGauge("vflux/server/active/capacity", nil) - totalActiveCountGauge = metrics.NewRegisteredGauge("vflux/server/active/count", nil) - totalInactiveCountGauge = metrics.NewRegisteredGauge("vflux/server/inactive/count", nil) - - clientConnectedMeter = metrics.NewRegisteredMeter("vflux/server/clientEvent/connected", nil) - clientActivatedMeter = metrics.NewRegisteredMeter("vflux/server/clientEvent/activated", nil) - clientDeactivatedMeter = metrics.NewRegisteredMeter("vflux/server/clientEvent/deactivated", nil) - clientDisconnectedMeter = metrics.NewRegisteredMeter("vflux/server/clientEvent/disconnected", nil) - - capacityQueryZeroMeter = metrics.NewRegisteredMeter("vflux/server/capQueryZero", nil) - capacityQueryNonZeroMeter = metrics.NewRegisteredMeter("vflux/server/capQueryNonZero", nil) -) diff --git a/les/vflux/server/prioritypool.go b/les/vflux/server/prioritypool.go deleted file mode 100644 index 766026a808..0000000000 --- a/les/vflux/server/prioritypool.go +++ /dev/null @@ -1,695 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "math" - "sync" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/common/prque" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -const ( - lazyQueueRefresh = time.Second * 10 // refresh period of the active queue -) - -// priorityPool handles a set of nodes where each node has a capacity (a scalar value) -// and a priority (which can change over time and can also depend on the capacity). -// A node is active if it has at least the necessary minimal amount of capacity while -// inactive nodes have 0 capacity (values between 0 and the minimum are not allowed). -// The pool ensures that the number and total capacity of all active nodes are limited -// and the highest priority nodes are active at all times (limits can be changed -// during operation with immediate effect). -// -// When activating clients a priority bias is applied in favor of the already active -// nodes in order to avoid nodes quickly alternating between active and inactive states -// when their priorities are close to each other. The bias is specified in terms of -// duration (time) because priorities are expected to usually get lower over time and -// therefore a future minimum prediction (see EstMinPriority) should monotonously -// decrease with the specified time parameter. -// This time bias can be interpreted as minimum expected active time at the given -// capacity (if the threshold priority stays the same). -// -// Nodes in the pool always have either inactiveFlag or activeFlag set. A new node is -// added to the pool by externally setting inactiveFlag. priorityPool can switch a node -// between inactiveFlag and activeFlag at any time. Nodes can be removed from the pool -// by externally resetting both flags. activeFlag should not be set externally. -// -// The highest priority nodes in "inactive" state are moved to "active" state as soon as -// the minimum capacity can be granted for them. The capacity of lower priority active -// nodes is reduced or they are demoted to "inactive" state if their priority is -// insufficient even at minimal capacity. -type priorityPool struct { - setup *serverSetup - ns *nodestate.NodeStateMachine - clock mclock.Clock - lock sync.Mutex - maxCount, maxCap uint64 - minCap uint64 - activeBias time.Duration - capacityStepDiv, fineStepDiv uint64 - - // The snapshot of priority pool for query. - cachedCurve *capacityCurve - ccUpdatedAt mclock.AbsTime - ccUpdateForced bool - - // Runtime status of prioritypool, represents the - // temporary state if tempState is not empty - tempState []*ppNodeInfo - activeCount, activeCap uint64 - activeQueue *prque.LazyQueue[int64, *ppNodeInfo] - inactiveQueue *prque.Prque[int64, *ppNodeInfo] -} - -// ppNodeInfo is the internal node descriptor of priorityPool -type ppNodeInfo struct { - nodePriority nodePriority - node *enode.Node - connected bool - capacity uint64 // only changed when temporary state is committed - activeIndex, inactiveIndex int - - tempState bool // should only be true while the priorityPool lock is held - tempCapacity uint64 // equals capacity when tempState is false - - // the following fields only affect the temporary state and they are set to their - // default value when leaving the temp state - minTarget, stepDiv uint64 - bias time.Duration -} - -// newPriorityPool creates a new priorityPool -func newPriorityPool(ns *nodestate.NodeStateMachine, setup *serverSetup, clock mclock.Clock, minCap uint64, activeBias time.Duration, capacityStepDiv, fineStepDiv uint64) *priorityPool { - pp := &priorityPool{ - setup: setup, - ns: ns, - clock: clock, - inactiveQueue: prque.New[int64, *ppNodeInfo](inactiveSetIndex), - minCap: minCap, - activeBias: activeBias, - capacityStepDiv: capacityStepDiv, - fineStepDiv: fineStepDiv, - } - if pp.activeBias < time.Duration(1) { - pp.activeBias = time.Duration(1) - } - pp.activeQueue = prque.NewLazyQueue(activeSetIndex, activePriority, pp.activeMaxPriority, clock, lazyQueueRefresh) - - ns.SubscribeField(pp.setup.balanceField, func(node *enode.Node, state nodestate.Flags, oldValue, newValue interface{}) { - if newValue != nil { - c := &ppNodeInfo{ - node: node, - nodePriority: newValue.(nodePriority), - activeIndex: -1, - inactiveIndex: -1, - } - ns.SetFieldSub(node, pp.setup.queueField, c) - ns.SetStateSub(node, setup.inactiveFlag, nodestate.Flags{}, 0) - } else { - ns.SetStateSub(node, nodestate.Flags{}, pp.setup.activeFlag.Or(pp.setup.inactiveFlag), 0) - if n, _ := pp.ns.GetField(node, pp.setup.queueField).(*ppNodeInfo); n != nil { - pp.disconnectNode(n) - } - ns.SetFieldSub(node, pp.setup.capacityField, nil) - ns.SetFieldSub(node, pp.setup.queueField, nil) - } - }) - ns.SubscribeState(pp.setup.activeFlag.Or(pp.setup.inactiveFlag), func(node *enode.Node, oldState, newState nodestate.Flags) { - if c, _ := pp.ns.GetField(node, pp.setup.queueField).(*ppNodeInfo); c != nil { - if oldState.IsEmpty() { - pp.connectNode(c) - } - if newState.IsEmpty() { - pp.disconnectNode(c) - } - } - }) - ns.SubscribeState(pp.setup.updateFlag, func(node *enode.Node, oldState, newState nodestate.Flags) { - if !newState.IsEmpty() { - pp.updatePriority(node) - } - }) - return pp -} - -// requestCapacity tries to set the capacity of a connected node to the highest possible -// value inside the given target range. If maxTarget is not reachable then the capacity is -// iteratively reduced in fine steps based on the fineStepDiv parameter until minTarget is reached. -// The function returns the new capacity if successful and the original capacity otherwise. -// Note: this function should run inside a NodeStateMachine operation -func (pp *priorityPool) requestCapacity(node *enode.Node, minTarget, maxTarget uint64, bias time.Duration) uint64 { - pp.lock.Lock() - pp.activeQueue.Refresh() - - if minTarget < pp.minCap { - minTarget = pp.minCap - } - if maxTarget < minTarget { - maxTarget = minTarget - } - if bias < pp.activeBias { - bias = pp.activeBias - } - c, _ := pp.ns.GetField(node, pp.setup.queueField).(*ppNodeInfo) - if c == nil { - log.Error("requestCapacity called for unknown node", "id", node.ID()) - pp.lock.Unlock() - return 0 - } - pp.setTempState(c) - if maxTarget > c.capacity { - pp.setTempStepDiv(c, pp.fineStepDiv) - pp.setTempBias(c, bias) - } - pp.setTempCapacity(c, maxTarget) - c.minTarget = minTarget - pp.removeFromQueues(c) - pp.activeQueue.Push(c) - pp.enforceLimits() - updates := pp.finalizeChanges(c.tempCapacity >= minTarget && c.tempCapacity <= maxTarget && c.tempCapacity != c.capacity) - pp.lock.Unlock() - pp.updateFlags(updates) - return c.capacity -} - -// SetLimits sets the maximum number and total capacity of simultaneously active nodes -func (pp *priorityPool) SetLimits(maxCount, maxCap uint64) { - pp.lock.Lock() - pp.activeQueue.Refresh() - inc := (maxCount > pp.maxCount) || (maxCap > pp.maxCap) - dec := (maxCount < pp.maxCount) || (maxCap < pp.maxCap) - pp.maxCount, pp.maxCap = maxCount, maxCap - - var updates []capUpdate - if dec { - pp.enforceLimits() - updates = pp.finalizeChanges(true) - } - if inc { - updates = append(updates, pp.tryActivate(false)...) - } - pp.lock.Unlock() - pp.ns.Operation(func() { pp.updateFlags(updates) }) -} - -// setActiveBias sets the bias applied when trying to activate inactive nodes -func (pp *priorityPool) setActiveBias(bias time.Duration) { - pp.lock.Lock() - pp.activeBias = bias - if pp.activeBias < time.Duration(1) { - pp.activeBias = time.Duration(1) - } - updates := pp.tryActivate(false) - pp.lock.Unlock() - pp.ns.Operation(func() { pp.updateFlags(updates) }) -} - -// Active returns the number and total capacity of currently active nodes -func (pp *priorityPool) Active() (uint64, uint64) { - pp.lock.Lock() - defer pp.lock.Unlock() - - return pp.activeCount, pp.activeCap -} - -// Inactive returns the number of currently inactive nodes -func (pp *priorityPool) Inactive() int { - pp.lock.Lock() - defer pp.lock.Unlock() - - return pp.inactiveQueue.Size() -} - -// Limits returns the maximum allowed number and total capacity of active nodes -func (pp *priorityPool) Limits() (uint64, uint64) { - pp.lock.Lock() - defer pp.lock.Unlock() - - return pp.maxCount, pp.maxCap -} - -// inactiveSetIndex callback updates ppNodeInfo item index in inactiveQueue -func inactiveSetIndex(a *ppNodeInfo, index int) { - a.inactiveIndex = index -} - -// activeSetIndex callback updates ppNodeInfo item index in activeQueue -func activeSetIndex(a *ppNodeInfo, index int) { - a.activeIndex = index -} - -// invertPriority inverts a priority value. The active queue uses inverted priorities -// because the node on the top is the first to be deactivated. -func invertPriority(p int64) int64 { - if p == math.MinInt64 { - return math.MaxInt64 - } - return -p -} - -// activePriority callback returns actual priority of ppNodeInfo item in activeQueue -func activePriority(c *ppNodeInfo) int64 { - if c.bias == 0 { - return invertPriority(c.nodePriority.priority(c.tempCapacity)) - } else { - return invertPriority(c.nodePriority.estimatePriority(c.tempCapacity, 0, 0, c.bias, true)) - } -} - -// activeMaxPriority callback returns estimated maximum priority of ppNodeInfo item in activeQueue -func (pp *priorityPool) activeMaxPriority(c *ppNodeInfo, until mclock.AbsTime) int64 { - future := time.Duration(until - pp.clock.Now()) - if future < 0 { - future = 0 - } - return invertPriority(c.nodePriority.estimatePriority(c.tempCapacity, 0, future, c.bias, false)) -} - -// inactivePriority callback returns actual priority of ppNodeInfo item in inactiveQueue -func (pp *priorityPool) inactivePriority(p *ppNodeInfo) int64 { - return p.nodePriority.priority(pp.minCap) -} - -// removeFromQueues removes the node from the active/inactive queues -func (pp *priorityPool) removeFromQueues(c *ppNodeInfo) { - if c.activeIndex >= 0 { - pp.activeQueue.Remove(c.activeIndex) - } - if c.inactiveIndex >= 0 { - pp.inactiveQueue.Remove(c.inactiveIndex) - } -} - -// connectNode is called when a new node has been added to the pool (inactiveFlag set) -// Note: this function should run inside a NodeStateMachine operation -func (pp *priorityPool) connectNode(c *ppNodeInfo) { - pp.lock.Lock() - pp.activeQueue.Refresh() - if c.connected { - pp.lock.Unlock() - return - } - c.connected = true - pp.inactiveQueue.Push(c, pp.inactivePriority(c)) - updates := pp.tryActivate(false) - pp.lock.Unlock() - pp.updateFlags(updates) -} - -// disconnectNode is called when a node has been removed from the pool (both inactiveFlag -// and activeFlag reset) -// Note: this function should run inside a NodeStateMachine operation -func (pp *priorityPool) disconnectNode(c *ppNodeInfo) { - pp.lock.Lock() - pp.activeQueue.Refresh() - if !c.connected { - pp.lock.Unlock() - return - } - c.connected = false - pp.removeFromQueues(c) - - var updates []capUpdate - if c.capacity != 0 { - pp.setTempState(c) - pp.setTempCapacity(c, 0) - updates = pp.tryActivate(true) - } - pp.lock.Unlock() - pp.updateFlags(updates) -} - -// setTempState internally puts a node in a temporary state that can either be reverted -// or confirmed later. This temporary state allows changing the capacity of a node and -// moving it between the active and inactive queue. activeFlag/inactiveFlag and -// capacityField are not changed while the changes are still temporary. -func (pp *priorityPool) setTempState(c *ppNodeInfo) { - if c.tempState { - return - } - c.tempState = true - if c.tempCapacity != c.capacity { // should never happen - log.Error("tempCapacity != capacity when entering tempState") - } - // Assign all the defaults to the temp state. - c.minTarget = pp.minCap - c.stepDiv = pp.capacityStepDiv - c.bias = 0 - pp.tempState = append(pp.tempState, c) -} - -// unsetTempState revokes the temp status of the node and reset all internal -// fields to the default value. -func (pp *priorityPool) unsetTempState(c *ppNodeInfo) { - if !c.tempState { - return - } - c.tempState = false - if c.tempCapacity != c.capacity { // should never happen - log.Error("tempCapacity != capacity when leaving tempState") - } - c.minTarget = pp.minCap - c.stepDiv = pp.capacityStepDiv - c.bias = 0 -} - -// setTempCapacity changes the capacity of a node in the temporary state and adjusts -// activeCap and activeCount accordingly. Since this change is performed in the temporary -// state it should be called after setTempState and before finalizeChanges. -func (pp *priorityPool) setTempCapacity(c *ppNodeInfo, cap uint64) { - if !c.tempState { // should never happen - log.Error("Node is not in temporary state") - return - } - pp.activeCap += cap - c.tempCapacity - if c.tempCapacity == 0 { - pp.activeCount++ - } - if cap == 0 { - pp.activeCount-- - } - c.tempCapacity = cap -} - -// setTempBias changes the connection bias of a node in the temporary state. -func (pp *priorityPool) setTempBias(c *ppNodeInfo, bias time.Duration) { - if !c.tempState { // should never happen - log.Error("Node is not in temporary state") - return - } - c.bias = bias -} - -// setTempStepDiv changes the capacity divisor of a node in the temporary state. -func (pp *priorityPool) setTempStepDiv(c *ppNodeInfo, stepDiv uint64) { - if !c.tempState { // should never happen - log.Error("Node is not in temporary state") - return - } - c.stepDiv = stepDiv -} - -// enforceLimits enforces active node count and total capacity limits. It returns the -// lowest active node priority. Note that this function is performed on the temporary -// internal state. -func (pp *priorityPool) enforceLimits() (*ppNodeInfo, int64) { - if pp.activeCap <= pp.maxCap && pp.activeCount <= pp.maxCount { - return nil, math.MinInt64 - } - var ( - lastNode *ppNodeInfo - maxActivePriority int64 - ) - pp.activeQueue.MultiPop(func(c *ppNodeInfo, priority int64) bool { - lastNode = c - pp.setTempState(c) - maxActivePriority = priority - if c.tempCapacity == c.minTarget || pp.activeCount > pp.maxCount { - pp.setTempCapacity(c, 0) - } else { - sub := c.tempCapacity / c.stepDiv - if sub == 0 { - sub = 1 - } - if c.tempCapacity-sub < c.minTarget { - sub = c.tempCapacity - c.minTarget - } - pp.setTempCapacity(c, c.tempCapacity-sub) - pp.activeQueue.Push(c) - } - return pp.activeCap > pp.maxCap || pp.activeCount > pp.maxCount - }) - return lastNode, invertPriority(maxActivePriority) -} - -// finalizeChanges either commits or reverts temporary changes. The necessary capacity -// field and according flag updates are not performed here but returned in a list because -// they should be performed while the mutex is not held. -func (pp *priorityPool) finalizeChanges(commit bool) (updates []capUpdate) { - for _, c := range pp.tempState { - // always remove and push back in order to update biased priority - pp.removeFromQueues(c) - oldCapacity := c.capacity - if commit { - c.capacity = c.tempCapacity - } else { - pp.setTempCapacity(c, c.capacity) // revert activeCount/activeCap - } - pp.unsetTempState(c) - - if c.connected { - if c.capacity != 0 { - pp.activeQueue.Push(c) - } else { - pp.inactiveQueue.Push(c, pp.inactivePriority(c)) - } - if c.capacity != oldCapacity { - updates = append(updates, capUpdate{c.node, oldCapacity, c.capacity}) - } - } - } - pp.tempState = nil - if commit { - pp.ccUpdateForced = true - } - return -} - -// capUpdate describes a capacityField and activeFlag/inactiveFlag update -type capUpdate struct { - node *enode.Node - oldCap, newCap uint64 -} - -// updateFlags performs capacityField and activeFlag/inactiveFlag updates while the -// pool mutex is not held -// Note: this function should run inside a NodeStateMachine operation -func (pp *priorityPool) updateFlags(updates []capUpdate) { - for _, f := range updates { - if f.oldCap == 0 { - pp.ns.SetStateSub(f.node, pp.setup.activeFlag, pp.setup.inactiveFlag, 0) - } - if f.newCap == 0 { - pp.ns.SetStateSub(f.node, pp.setup.inactiveFlag, pp.setup.activeFlag, 0) - pp.ns.SetFieldSub(f.node, pp.setup.capacityField, nil) - } else { - pp.ns.SetFieldSub(f.node, pp.setup.capacityField, f.newCap) - } - } -} - -// tryActivate tries to activate inactive nodes if possible -func (pp *priorityPool) tryActivate(commit bool) []capUpdate { - for pp.inactiveQueue.Size() > 0 { - c := pp.inactiveQueue.PopItem() - pp.setTempState(c) - pp.setTempBias(c, pp.activeBias) - pp.setTempCapacity(c, pp.minCap) - pp.activeQueue.Push(c) - pp.enforceLimits() - if c.tempCapacity > 0 { - commit = true - pp.setTempBias(c, 0) - } else { - break - } - } - pp.ccUpdateForced = true - return pp.finalizeChanges(commit) -} - -// updatePriority gets the current priority value of the given node from the nodePriority -// interface and performs the necessary changes. It is triggered by updateFlag. -// Note: this function should run inside a NodeStateMachine operation -func (pp *priorityPool) updatePriority(node *enode.Node) { - pp.lock.Lock() - pp.activeQueue.Refresh() - c, _ := pp.ns.GetField(node, pp.setup.queueField).(*ppNodeInfo) - if c == nil || !c.connected { - pp.lock.Unlock() - return - } - pp.removeFromQueues(c) - if c.capacity != 0 { - pp.activeQueue.Push(c) - } else { - pp.inactiveQueue.Push(c, pp.inactivePriority(c)) - } - updates := pp.tryActivate(false) - pp.lock.Unlock() - pp.updateFlags(updates) -} - -// capacityCurve is a snapshot of the priority pool contents in a format that can efficiently -// estimate how much capacity could be granted to a given node at a given priority level. -type capacityCurve struct { - points []curvePoint // curve points sorted in descending order of priority - index map[enode.ID][]int // curve point indexes belonging to each node - excludeList []int // curve point indexes of excluded node - excludeFirst bool // true if activeCount == maxCount -} - -type curvePoint struct { - freeCap uint64 // available capacity and node count at the current priority level - nextPri int64 // next priority level where more capacity will be available -} - -// getCapacityCurve returns a new or recently cached capacityCurve based on the contents of the pool -func (pp *priorityPool) getCapacityCurve() *capacityCurve { - pp.lock.Lock() - defer pp.lock.Unlock() - - now := pp.clock.Now() - dt := time.Duration(now - pp.ccUpdatedAt) - if !pp.ccUpdateForced && pp.cachedCurve != nil && dt < time.Second*10 { - return pp.cachedCurve - } - - pp.ccUpdateForced = false - pp.ccUpdatedAt = now - curve := &capacityCurve{ - index: make(map[enode.ID][]int), - } - pp.cachedCurve = curve - - var excludeID enode.ID - excludeFirst := pp.maxCount == pp.activeCount - // reduce node capacities or remove nodes until nothing is left in the queue; - // record the available capacity and the necessary priority after each step - lastPri := int64(math.MinInt64) - for pp.activeCap > 0 { - cp := curvePoint{} - if pp.activeCap > pp.maxCap { - log.Error("Active capacity is greater than allowed maximum", "active", pp.activeCap, "maximum", pp.maxCap) - } else { - cp.freeCap = pp.maxCap - pp.activeCap - } - // temporarily increase activeCap to enforce reducing or removing a node capacity - tempCap := cp.freeCap + 1 - pp.activeCap += tempCap - var next *ppNodeInfo - // enforceLimits removes the lowest priority node if it has minimal capacity, - // otherwise reduces its capacity - next, cp.nextPri = pp.enforceLimits() - if cp.nextPri < lastPri { - // enforce monotonicity which may be broken by continuously changing priorities - cp.nextPri = lastPri - } else { - lastPri = cp.nextPri - } - pp.activeCap -= tempCap - if next == nil { - log.Error("getCapacityCurve: cannot remove next element from the priority queue") - break - } - id := next.node.ID() - if excludeFirst { - // if the node count limit is already reached then mark the node with the - // lowest priority for exclusion - curve.excludeFirst = true - excludeID = id - excludeFirst = false - } - // multiple curve points and therefore multiple indexes may belong to a node - // if it was removed in multiple steps (if its capacity was more than the minimum) - curve.index[id] = append(curve.index[id], len(curve.points)) - curve.points = append(curve.points, cp) - } - // restore original state of the queue - pp.finalizeChanges(false) - curve.points = append(curve.points, curvePoint{ - freeCap: pp.maxCap, - nextPri: math.MaxInt64, - }) - if curve.excludeFirst { - curve.excludeList = curve.index[excludeID] - } - return curve -} - -// exclude returns a capacityCurve with the given node excluded from the original curve -func (cc *capacityCurve) exclude(id enode.ID) *capacityCurve { - if excludeList, ok := cc.index[id]; ok { - // return a new version of the curve (only one excluded node can be selected) - // Note: if the first node was excluded by default (excludeFirst == true) then - // we can forget about that and exclude the node with the given id instead. - return &capacityCurve{ - points: cc.points, - index: cc.index, - excludeList: excludeList, - } - } - return cc -} - -func (cc *capacityCurve) getPoint(i int) curvePoint { - cp := cc.points[i] - if i == 0 && cc.excludeFirst { - cp.freeCap = 0 - return cp - } - for ii := len(cc.excludeList) - 1; ii >= 0; ii-- { - ei := cc.excludeList[ii] - if ei < i { - break - } - e1, e2 := cc.points[ei], cc.points[ei+1] - cp.freeCap += e2.freeCap - e1.freeCap - } - return cp -} - -// maxCapacity calculates the maximum capacity available for a node with a given -// (monotonically decreasing) priority vs. capacity function. Note that if the requesting -// node is already in the pool then it should be excluded from the curve in order to get -// the correct result. -func (cc *capacityCurve) maxCapacity(priority func(cap uint64) int64) uint64 { - min, max := 0, len(cc.points)-1 // the curve always has at least one point - for min < max { - mid := (min + max) / 2 - cp := cc.getPoint(mid) - if cp.freeCap == 0 || priority(cp.freeCap) > cp.nextPri { - min = mid + 1 - } else { - max = mid - } - } - cp2 := cc.getPoint(min) - if cp2.freeCap == 0 || min == 0 { - return cp2.freeCap - } - cp1 := cc.getPoint(min - 1) - if priority(cp2.freeCap) > cp1.nextPri { - return cp2.freeCap - } - minc, maxc := cp1.freeCap, cp2.freeCap-1 - for minc < maxc { - midc := (minc + maxc + 1) / 2 - if midc == 0 || priority(midc) > cp1.nextPri { - minc = midc - } else { - maxc = midc - 1 - } - } - return maxc -} diff --git a/les/vflux/server/prioritypool_test.go b/les/vflux/server/prioritypool_test.go deleted file mode 100644 index 60b7b83bbc..0000000000 --- a/les/vflux/server/prioritypool_test.go +++ /dev/null @@ -1,237 +0,0 @@ -// Copyright 2020 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "math/rand" - "reflect" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -const ( - testCapacityStepDiv = 100 - testCapacityToleranceDiv = 10 - testMinCap = 100 -) - -type ppTestClient struct { - node *enode.Node - balance, cap uint64 -} - -func (c *ppTestClient) priority(cap uint64) int64 { - return int64(c.balance / cap) -} - -func (c *ppTestClient) estimatePriority(cap uint64, addBalance int64, future, bias time.Duration, update bool) int64 { - return int64(c.balance / cap) -} - -func TestPriorityPool(t *testing.T) { - t.Parallel() - - clock := &mclock.Simulated{} - setup := newServerSetup() - setup.balanceField = setup.setup.NewField("ppTestClient", reflect.TypeOf(&ppTestClient{})) - ns := nodestate.NewNodeStateMachine(nil, nil, clock, setup.setup) - - ns.SubscribeField(setup.capacityField, func(node *enode.Node, state nodestate.Flags, oldValue, newValue interface{}) { - if n := ns.GetField(node, setup.balanceField); n != nil { - c := n.(*ppTestClient) - c.cap = newValue.(uint64) - } - }) - pp := newPriorityPool(ns, setup, clock, testMinCap, 0, testCapacityStepDiv, testCapacityStepDiv) - ns.Start() - pp.SetLimits(100, 1000000) - clients := make([]*ppTestClient, 100) - raise := func(c *ppTestClient) { - for { - var ok bool - ns.Operation(func() { - newCap := c.cap + c.cap/testCapacityStepDiv - ok = pp.requestCapacity(c.node, newCap, newCap, 0) == newCap - }) - if !ok { - return - } - } - } - var sumBalance uint64 - check := func(c *ppTestClient) { - expCap := 1000000 * c.balance / sumBalance - capTol := expCap / testCapacityToleranceDiv - if c.cap < expCap-capTol || c.cap > expCap+capTol { - t.Errorf("Wrong node capacity (expected %d, got %d)", expCap, c.cap) - } - } - - for i := range clients { - c := &ppTestClient{ - node: enode.SignNull(&enr.Record{}, enode.ID{byte(i)}), - balance: 100000000000, - cap: 1000, - } - sumBalance += c.balance - clients[i] = c - ns.SetField(c.node, setup.balanceField, c) - ns.SetState(c.node, setup.inactiveFlag, nodestate.Flags{}, 0) - raise(c) - check(c) - } - - for count := 0; count < 100; count++ { - c := clients[rand.Intn(len(clients))] - oldBalance := c.balance - c.balance = uint64(rand.Int63n(100000000000) + 100000000000) - sumBalance += c.balance - oldBalance - pp.ns.SetState(c.node, setup.updateFlag, nodestate.Flags{}, 0) - pp.ns.SetState(c.node, nodestate.Flags{}, setup.updateFlag, 0) - if c.balance > oldBalance { - raise(c) - } else { - for _, c := range clients { - raise(c) - } - } - // check whether capacities are proportional to balances - for _, c := range clients { - check(c) - } - if count%10 == 0 { - // test available capacity calculation with capacity curve - c = clients[rand.Intn(len(clients))] - curve := pp.getCapacityCurve().exclude(c.node.ID()) - - add := uint64(rand.Int63n(10000000000000)) - c.balance += add - sumBalance += add - expCap := curve.maxCapacity(func(cap uint64) int64 { - return int64(c.balance / cap) - }) - var ok bool - expFail := expCap + 10 - if expFail < testMinCap { - expFail = testMinCap - } - ns.Operation(func() { - ok = pp.requestCapacity(c.node, expFail, expFail, 0) == expFail - }) - if ok { - t.Errorf("Request for more than expected available capacity succeeded") - } - if expCap >= testMinCap { - ns.Operation(func() { - ok = pp.requestCapacity(c.node, expCap, expCap, 0) == expCap - }) - if !ok { - t.Errorf("Request for expected available capacity failed") - } - } - c.balance -= add - sumBalance -= add - pp.ns.SetState(c.node, setup.updateFlag, nodestate.Flags{}, 0) - pp.ns.SetState(c.node, nodestate.Flags{}, setup.updateFlag, 0) - for _, c := range clients { - raise(c) - } - } - } - - ns.Stop() -} - -func TestCapacityCurve(t *testing.T) { - t.Parallel() - - clock := &mclock.Simulated{} - setup := newServerSetup() - setup.balanceField = setup.setup.NewField("ppTestClient", reflect.TypeOf(&ppTestClient{})) - ns := nodestate.NewNodeStateMachine(nil, nil, clock, setup.setup) - - pp := newPriorityPool(ns, setup, clock, 400000, 0, 2, 2) - ns.Start() - pp.SetLimits(10, 10000000) - clients := make([]*ppTestClient, 10) - - for i := range clients { - c := &ppTestClient{ - node: enode.SignNull(&enr.Record{}, enode.ID{byte(i)}), - balance: 100000000000 * uint64(i+1), - cap: 1000000, - } - clients[i] = c - ns.SetField(c.node, setup.balanceField, c) - ns.SetState(c.node, setup.inactiveFlag, nodestate.Flags{}, 0) - ns.Operation(func() { - pp.requestCapacity(c.node, c.cap, c.cap, 0) - }) - } - - curve := pp.getCapacityCurve() - check := func(balance, expCap uint64) { - cap := curve.maxCapacity(func(cap uint64) int64 { - return int64(balance / cap) - }) - var fail bool - if cap == 0 || expCap == 0 { - fail = cap != expCap - } else { - pri := balance / cap - expPri := balance / expCap - fail = pri != expPri && pri != expPri+1 - } - if fail { - t.Errorf("Incorrect capacity for %d balance (got %d, expected %d)", balance, cap, expCap) - } - } - - check(0, 0) - check(10000000000, 100000) - check(50000000000, 500000) - check(100000000000, 1000000) - check(200000000000, 1000000) - check(300000000000, 1500000) - check(450000000000, 1500000) - check(600000000000, 2000000) - check(800000000000, 2000000) - check(1000000000000, 2500000) - - pp.SetLimits(11, 10000000) - curve = pp.getCapacityCurve() - - check(0, 0) - check(10000000000, 100000) - check(50000000000, 500000) - check(150000000000, 750000) - check(200000000000, 1000000) - check(220000000000, 1100000) - check(275000000000, 1100000) - check(375000000000, 1500000) - check(450000000000, 1500000) - check(600000000000, 2000000) - check(800000000000, 2000000) - check(1000000000000, 2500000) - - ns.Stop() -} diff --git a/les/vflux/server/service.go b/les/vflux/server/service.go deleted file mode 100644 index 40515f072e..0000000000 --- a/les/vflux/server/service.go +++ /dev/null @@ -1,120 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "net" - "strings" - "sync" - "time" - - "github.com/ethereum/go-ethereum/les/utils" - "github.com/ethereum/go-ethereum/les/vflux" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/rlp" -) - -type ( - // Server serves vflux requests - Server struct { - limiter *utils.Limiter - lock sync.Mutex - services map[string]*serviceEntry - delayPerRequest time.Duration - } - - // Service is a service registered at the Server and identified by a string id - Service interface { - Handle(id enode.ID, address string, name string, data []byte) []byte // never called concurrently - } - - serviceEntry struct { - id, desc string - backend Service - } -) - -// NewServer creates a new Server -func NewServer(delayPerRequest time.Duration) *Server { - return &Server{ - limiter: utils.NewLimiter(1000), - delayPerRequest: delayPerRequest, - services: make(map[string]*serviceEntry), - } -} - -// Register registers a Service -func (s *Server) Register(b Service, id, desc string) { - srv := &serviceEntry{backend: b, id: id, desc: desc} - if strings.Contains(srv.id, ":") { - // srv.id + ":" will be used as a service database prefix - log.Error("Service ID contains ':'", "id", srv.id) - return - } - s.lock.Lock() - s.services[srv.id] = srv - s.lock.Unlock() -} - -// Serve serves a vflux request batch -// Note: requests are served by the Handle functions of the registered services. Serve -// may be called concurrently but the Handle functions are called sequentially and -// therefore thread safety is guaranteed. -func (s *Server) Serve(id enode.ID, address string, requests vflux.Requests) vflux.Replies { - reqLen := uint(len(requests)) - if reqLen == 0 || reqLen > vflux.MaxRequestLength { - return nil - } - // Note: the value parameter will be supplied by the token sale module (total amount paid) - ch := <-s.limiter.Add(id, address, 0, reqLen) - if ch == nil { - return nil - } - // Note: the limiter ensures that the following section is not running concurrently, - // the lock only protects against contention caused by new service registration - s.lock.Lock() - results := make(vflux.Replies, len(requests)) - for i, req := range requests { - if service := s.services[req.Service]; service != nil { - results[i] = service.backend.Handle(id, address, req.Name, req.Params) - } - } - s.lock.Unlock() - time.Sleep(s.delayPerRequest * time.Duration(reqLen)) - close(ch) - return results -} - -// ServeEncoded serves an encoded vflux request batch and returns the encoded replies -func (s *Server) ServeEncoded(id enode.ID, addr *net.UDPAddr, req []byte) []byte { - var requests vflux.Requests - if err := rlp.DecodeBytes(req, &requests); err != nil { - return nil - } - results := s.Serve(id, addr.String(), requests) - if results == nil { - return nil - } - res, _ := rlp.EncodeToBytes(&results) - return res -} - -// Stop shuts down the server -func (s *Server) Stop() { - s.limiter.Stop() -} diff --git a/les/vflux/server/status.go b/les/vflux/server/status.go deleted file mode 100644 index 2d7e25b684..0000000000 --- a/les/vflux/server/status.go +++ /dev/null @@ -1,59 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package server - -import ( - "reflect" - - "github.com/ethereum/go-ethereum/p2p/nodestate" -) - -type peerWrapper struct{ clientPeer } // the NodeStateMachine type system needs this wrapper - -// serverSetup is a wrapper of the node state machine setup, which contains -// all the created flags and fields used in the vflux server side. -type serverSetup struct { - setup *nodestate.Setup - clientField nodestate.Field // Field contains the client peer handler - - // Flags and fields controlled by balance tracker. BalanceTracker - // is responsible for setting/deleting these flags or fields. - priorityFlag nodestate.Flags // Flag is set if the node has a positive balance - updateFlag nodestate.Flags // Flag is set whenever the node balance is changed(priority changed) - balanceField nodestate.Field // Field contains the client balance for priority calculation - - // Flags and fields controlled by priority queue. Priority queue - // is responsible for setting/deleting these flags or fields. - activeFlag nodestate.Flags // Flag is set if the node is active - inactiveFlag nodestate.Flags // Flag is set if the node is inactive - capacityField nodestate.Field // Field contains the capacity of the node - queueField nodestate.Field // Field contains the information in the priority queue -} - -// newServerSetup initializes the setup for state machine and returns the flags/fields group. -func newServerSetup() *serverSetup { - setup := &serverSetup{setup: &nodestate.Setup{}} - setup.clientField = setup.setup.NewField("client", reflect.TypeOf(peerWrapper{})) - setup.priorityFlag = setup.setup.NewFlag("priority") - setup.updateFlag = setup.setup.NewFlag("update") - setup.balanceField = setup.setup.NewField("balance", reflect.TypeOf(&nodeBalance{})) - setup.activeFlag = setup.setup.NewFlag("active") - setup.inactiveFlag = setup.setup.NewFlag("inactive") - setup.capacityField = setup.setup.NewField("capacity", reflect.TypeOf(uint64(0))) - setup.queueField = setup.setup.NewField("queue", reflect.TypeOf(&ppNodeInfo{})) - return setup -} diff --git a/tests/fuzzers/les/les-fuzzer.go b/tests/fuzzers/les/les-fuzzer.go deleted file mode 100644 index 209dda0bb9..0000000000 --- a/tests/fuzzers/les/les-fuzzer.go +++ /dev/null @@ -1,411 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import ( - "bytes" - "encoding/binary" - "io" - "math/big" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/consensus/ethash" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/rawdb" - "github.com/ethereum/go-ethereum/core/txpool" - "github.com/ethereum/go-ethereum/core/txpool/legacypool" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/core/vm" - "github.com/ethereum/go-ethereum/crypto" - l "github.com/ethereum/go-ethereum/les" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/rlp" - "github.com/ethereum/go-ethereum/trie" -) - -var ( - bankKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") - bankAddr = crypto.PubkeyToAddress(bankKey.PublicKey) - bankFunds = new(big.Int).Mul(big.NewInt(100), big.NewInt(params.Ether)) - - testChainLen = 256 - testContractCode = common.Hex2Bytes("606060405260cc8060106000396000f360606040526000357c01000000000000000000000000000000000000000000000000000000009004806360cd2685146041578063c16431b914606b57603f565b005b6055600480803590602001909190505060a9565b6040518082815260200191505060405180910390f35b60886004808035906020019091908035906020019091905050608a565b005b80600060005083606481101560025790900160005b50819055505b5050565b6000600060005082606481101560025790900160005b5054905060c7565b91905056") - - chain *core.BlockChain - addresses []common.Address - txHashes []common.Hash - - chtTrie *trie.Trie - bloomTrie *trie.Trie - chtKeys [][]byte - bloomKeys [][]byte -) - -func makechain() (bc *core.BlockChain, addresses []common.Address, txHashes []common.Hash) { - gspec := &core.Genesis{ - Config: params.TestChainConfig, - Alloc: core.GenesisAlloc{bankAddr: {Balance: bankFunds}}, - GasLimit: 100000000, - } - signer := types.HomesteadSigner{} - _, blocks, _ := core.GenerateChainWithGenesis(gspec, ethash.NewFaker(), testChainLen, - func(i int, gen *core.BlockGen) { - var ( - tx *types.Transaction - addr common.Address - ) - nonce := uint64(i) - if i%4 == 0 { - tx, _ = types.SignTx(types.NewContractCreation(nonce, big.NewInt(0), 200000, big.NewInt(params.GWei), testContractCode), signer, bankKey) - addr = crypto.CreateAddress(bankAddr, nonce) - } else { - addr = common.BigToAddress(big.NewInt(int64(i))) - tx, _ = types.SignTx(types.NewTransaction(nonce, addr, big.NewInt(10000), params.TxGas, big.NewInt(params.GWei), nil), signer, bankKey) - } - gen.AddTx(tx) - addresses = append(addresses, addr) - txHashes = append(txHashes, tx.Hash()) - }) - bc, _ = core.NewBlockChain(rawdb.NewMemoryDatabase(), nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil) - if _, err := bc.InsertChain(blocks); err != nil { - panic(err) - } - return -} - -func makeTries() (chtTrie *trie.Trie, bloomTrie *trie.Trie, chtKeys, bloomKeys [][]byte) { - chtTrie = trie.NewEmpty(trie.NewDatabase(rawdb.NewMemoryDatabase(), trie.HashDefaults)) - bloomTrie = trie.NewEmpty(trie.NewDatabase(rawdb.NewMemoryDatabase(), trie.HashDefaults)) - for i := 0; i < testChainLen; i++ { - // The element in CHT is -> - key := make([]byte, 8) - binary.BigEndian.PutUint64(key, uint64(i+1)) - chtTrie.MustUpdate(key, []byte{0x1, 0xf}) - chtKeys = append(chtKeys, key) - - // The element in Bloom trie is <2 byte bit index> + -> bloom - key2 := make([]byte, 10) - binary.BigEndian.PutUint64(key2[2:], uint64(i+1)) - bloomTrie.MustUpdate(key2, []byte{0x2, 0xe}) - bloomKeys = append(bloomKeys, key2) - } - return -} - -func init() { - chain, addresses, txHashes = makechain() - chtTrie, bloomTrie, chtKeys, bloomKeys = makeTries() -} - -type fuzzer struct { - chain *core.BlockChain - pool *txpool.TxPool - - chainLen int - addresses []common.Address - txs []common.Hash - nonce uint64 - - chtKeys [][]byte - bloomKeys [][]byte - chtTrie *trie.Trie - bloomTrie *trie.Trie - - input io.Reader - exhausted bool -} - -func newFuzzer(input []byte) *fuzzer { - pool := legacypool.New(legacypool.DefaultConfig, chain) - txpool, _ := txpool.New(new(big.Int).SetUint64(legacypool.DefaultConfig.PriceLimit), chain, []txpool.SubPool{pool}) - - return &fuzzer{ - chain: chain, - chainLen: testChainLen, - addresses: addresses, - txs: txHashes, - chtTrie: chtTrie, - bloomTrie: bloomTrie, - chtKeys: chtKeys, - bloomKeys: bloomKeys, - nonce: uint64(len(txHashes)), - pool: txpool, - input: bytes.NewReader(input), - } -} - -func (f *fuzzer) read(size int) []byte { - out := make([]byte, size) - if _, err := f.input.Read(out); err != nil { - f.exhausted = true - } - return out -} - -func (f *fuzzer) randomByte() byte { - d := f.read(1) - return d[0] -} - -func (f *fuzzer) randomBool() bool { - d := f.read(1) - return d[0]&1 == 1 -} - -func (f *fuzzer) randomInt(max int) int { - if max == 0 { - return 0 - } - if max <= 256 { - return int(f.randomByte()) % max - } - var a uint16 - if err := binary.Read(f.input, binary.LittleEndian, &a); err != nil { - f.exhausted = true - } - return int(a % uint16(max)) -} - -func (f *fuzzer) randomX(max int) uint64 { - var a uint16 - if err := binary.Read(f.input, binary.LittleEndian, &a); err != nil { - f.exhausted = true - } - if a < 0x8000 { - return uint64(a%uint16(max+1)) - 1 - } - return (uint64(1)<<(a%64+1) - 1) & (uint64(a) * 343897772345826595) -} - -func (f *fuzzer) randomBlockHash() common.Hash { - h := f.chain.GetCanonicalHash(uint64(f.randomInt(3 * f.chainLen))) - if h != (common.Hash{}) { - return h - } - return common.BytesToHash(f.read(common.HashLength)) -} - -func (f *fuzzer) randomAddress() []byte { - i := f.randomInt(3 * len(f.addresses)) - if i < len(f.addresses) { - return f.addresses[i].Bytes() - } - return f.read(common.AddressLength) -} - -func (f *fuzzer) randomCHTTrieKey() []byte { - i := f.randomInt(3 * len(f.chtKeys)) - if i < len(f.chtKeys) { - return f.chtKeys[i] - } - return f.read(8) -} - -func (f *fuzzer) randomBloomTrieKey() []byte { - i := f.randomInt(3 * len(f.bloomKeys)) - if i < len(f.bloomKeys) { - return f.bloomKeys[i] - } - return f.read(10) -} - -func (f *fuzzer) randomTxHash() common.Hash { - i := f.randomInt(3 * len(f.txs)) - if i < len(f.txs) { - return f.txs[i] - } - return common.BytesToHash(f.read(common.HashLength)) -} - -func (f *fuzzer) BlockChain() *core.BlockChain { - return f.chain -} - -func (f *fuzzer) TxPool() *txpool.TxPool { - return f.pool -} - -func (f *fuzzer) ArchiveMode() bool { - return false -} - -func (f *fuzzer) AddTxsSync() bool { - return false -} - -func (f *fuzzer) GetHelperTrie(typ uint, index uint64) *trie.Trie { - if typ == 0 { - return f.chtTrie - } else if typ == 1 { - return f.bloomTrie - } - return nil -} - -type dummyMsg struct { - data []byte -} - -func (d dummyMsg) Decode(val interface{}) error { - return rlp.DecodeBytes(d.data, val) -} - -func (f *fuzzer) doFuzz(msgCode uint64, packet interface{}) { - enc, err := rlp.EncodeToBytes(packet) - if err != nil { - panic(err) - } - version := f.randomInt(3) + 2 // [LES2, LES3, LES4] - peer, closeFn := l.NewFuzzerPeer(version) - defer closeFn() - fn, _, _, err := l.Les3[msgCode].Handle(dummyMsg{enc}) - if err != nil { - panic(err) - } - fn(f, peer, func() bool { return true }) -} - -func fuzz(input []byte) int { - // We expect some large inputs - if len(input) < 100 { - return -1 - } - f := newFuzzer(input) - if f.exhausted { - return -1 - } - for !f.exhausted { - switch f.randomInt(8) { - case 0: - req := &l.GetBlockHeadersPacket{ - Query: l.GetBlockHeadersData{ - Amount: f.randomX(l.MaxHeaderFetch + 1), - Skip: f.randomX(10), - Reverse: f.randomBool(), - }, - } - if f.randomBool() { - req.Query.Origin.Hash = f.randomBlockHash() - } else { - req.Query.Origin.Number = uint64(f.randomInt(f.chainLen * 2)) - } - f.doFuzz(l.GetBlockHeadersMsg, req) - - case 1: - req := &l.GetBlockBodiesPacket{Hashes: make([]common.Hash, f.randomInt(l.MaxBodyFetch+1))} - for i := range req.Hashes { - req.Hashes[i] = f.randomBlockHash() - } - f.doFuzz(l.GetBlockBodiesMsg, req) - - case 2: - req := &l.GetCodePacket{Reqs: make([]l.CodeReq, f.randomInt(l.MaxCodeFetch+1))} - for i := range req.Reqs { - req.Reqs[i] = l.CodeReq{ - BHash: f.randomBlockHash(), - AccountAddress: f.randomAddress(), - } - } - f.doFuzz(l.GetCodeMsg, req) - - case 3: - req := &l.GetReceiptsPacket{Hashes: make([]common.Hash, f.randomInt(l.MaxReceiptFetch+1))} - for i := range req.Hashes { - req.Hashes[i] = f.randomBlockHash() - } - f.doFuzz(l.GetReceiptsMsg, req) - - case 4: - req := &l.GetProofsPacket{Reqs: make([]l.ProofReq, f.randomInt(l.MaxProofsFetch+1))} - for i := range req.Reqs { - if f.randomBool() { - req.Reqs[i] = l.ProofReq{ - BHash: f.randomBlockHash(), - AccountAddress: f.randomAddress(), - Key: f.randomAddress(), - FromLevel: uint(f.randomX(3)), - } - } else { - req.Reqs[i] = l.ProofReq{ - BHash: f.randomBlockHash(), - Key: f.randomAddress(), - FromLevel: uint(f.randomX(3)), - } - } - } - f.doFuzz(l.GetProofsV2Msg, req) - - case 5: - req := &l.GetHelperTrieProofsPacket{Reqs: make([]l.HelperTrieReq, f.randomInt(l.MaxHelperTrieProofsFetch+1))} - for i := range req.Reqs { - switch f.randomInt(3) { - case 0: - // Canonical hash trie - req.Reqs[i] = l.HelperTrieReq{ - Type: 0, - TrieIdx: f.randomX(3), - Key: f.randomCHTTrieKey(), - FromLevel: uint(f.randomX(3)), - AuxReq: uint(2), - } - case 1: - // Bloom trie - req.Reqs[i] = l.HelperTrieReq{ - Type: 1, - TrieIdx: f.randomX(3), - Key: f.randomBloomTrieKey(), - FromLevel: uint(f.randomX(3)), - AuxReq: 0, - } - default: - // Random trie - req.Reqs[i] = l.HelperTrieReq{ - Type: 2, - TrieIdx: f.randomX(3), - Key: f.randomCHTTrieKey(), - FromLevel: uint(f.randomX(3)), - AuxReq: 0, - } - } - } - f.doFuzz(l.GetHelperTrieProofsMsg, req) - - case 6: - req := &l.SendTxPacket{Txs: make([]*types.Transaction, f.randomInt(l.MaxTxSend+1))} - signer := types.HomesteadSigner{} - for i := range req.Txs { - var nonce uint64 - if f.randomBool() { - nonce = uint64(f.randomByte()) - } else { - nonce = f.nonce - f.nonce += 1 - } - req.Txs[i], _ = types.SignTx(types.NewTransaction(nonce, common.Address{}, big.NewInt(10000), params.TxGas, big.NewInt(1000000000*int64(f.randomByte())), nil), signer, bankKey) - } - f.doFuzz(l.SendTxV2Msg, req) - - case 7: - req := &l.GetTxStatusPacket{Hashes: make([]common.Hash, f.randomInt(l.MaxTxStatus+1))} - for i := range req.Hashes { - req.Hashes[i] = f.randomTxHash() - } - f.doFuzz(l.GetTxStatusMsg, req) - } - } - return 0 -} diff --git a/tests/fuzzers/les/les_test.go b/tests/fuzzers/les/les_test.go deleted file mode 100644 index 53af45ceb4..0000000000 --- a/tests/fuzzers/les/les_test.go +++ /dev/null @@ -1,25 +0,0 @@ -// Copyright 2023 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package les - -import "testing" - -func Fuzz(f *testing.F) { - f.Fuzz(func(t *testing.T, data []byte) { - fuzz(data) - }) -} diff --git a/tests/fuzzers/vflux/clientpool-fuzzer.go b/tests/fuzzers/vflux/clientpool-fuzzer.go deleted file mode 100644 index de694a7b3f..0000000000 --- a/tests/fuzzers/vflux/clientpool-fuzzer.go +++ /dev/null @@ -1,333 +0,0 @@ -// Copyright 2021 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package vflux - -import ( - "bytes" - "encoding/binary" - "io" - "math" - "math/big" - "time" - - "github.com/ethereum/go-ethereum/common/mclock" - "github.com/ethereum/go-ethereum/ethdb/memorydb" - "github.com/ethereum/go-ethereum/les/vflux" - vfs "github.com/ethereum/go-ethereum/les/vflux/server" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/p2p/enode" - "github.com/ethereum/go-ethereum/p2p/enr" - "github.com/ethereum/go-ethereum/rlp" -) - -var ( - debugMode = false - doLog = func(msg string, ctx ...interface{}) { - if !debugMode { - return - } - log.Info(msg, ctx...) - } -) - -type fuzzer struct { - peers [256]*clientPeer - disconnectList []*clientPeer - input io.Reader - exhausted bool - activeCount, activeCap uint64 - maxCount, maxCap uint64 -} - -type clientPeer struct { - fuzzer *fuzzer - node *enode.Node - freeID string - timeout time.Duration - - balance vfs.ConnectedBalance - capacity uint64 -} - -func (p *clientPeer) Node() *enode.Node { - return p.node -} - -func (p *clientPeer) FreeClientId() string { - return p.freeID -} - -func (p *clientPeer) InactiveAllowance() time.Duration { - return p.timeout -} - -func (p *clientPeer) UpdateCapacity(newCap uint64, requested bool) { - origin, originTotal := p.capacity, p.fuzzer.activeCap - p.fuzzer.activeCap -= p.capacity - if p.capacity != 0 { - p.fuzzer.activeCount-- - } - p.capacity = newCap - p.fuzzer.activeCap += p.capacity - if p.capacity != 0 { - p.fuzzer.activeCount++ - } - doLog("Update capacity", "peer", p.node.ID(), "origin", origin, "cap", newCap, "origintotal", originTotal, "total", p.fuzzer.activeCap, "requested", requested) -} - -func (p *clientPeer) Disconnect() { - origin, originTotal := p.capacity, p.fuzzer.activeCap - p.fuzzer.disconnectList = append(p.fuzzer.disconnectList, p) - p.fuzzer.activeCap -= p.capacity - if p.capacity != 0 { - p.fuzzer.activeCount-- - } - p.capacity = 0 - p.balance = nil - doLog("Disconnect", "peer", p.node.ID(), "origin", origin, "origintotal", originTotal, "total", p.fuzzer.activeCap) -} - -func newFuzzer(input []byte) *fuzzer { - f := &fuzzer{ - input: bytes.NewReader(input), - } - for i := range f.peers { - f.peers[i] = &clientPeer{ - fuzzer: f, - node: enode.SignNull(new(enr.Record), enode.ID{byte(i)}), - freeID: string([]byte{byte(i)}), - timeout: f.randomDelay(), - } - } - return f -} - -func (f *fuzzer) read(size int) []byte { - out := make([]byte, size) - if _, err := f.input.Read(out); err != nil { - f.exhausted = true - } - return out -} - -func (f *fuzzer) randomByte() byte { - d := f.read(1) - return d[0] -} - -func (f *fuzzer) randomBool() bool { - d := f.read(1) - return d[0]&1 == 1 -} - -func (f *fuzzer) randomInt(max int) int { - if max == 0 { - return 0 - } - if max <= 256 { - return int(f.randomByte()) % max - } - var a uint16 - if err := binary.Read(f.input, binary.LittleEndian, &a); err != nil { - f.exhausted = true - } - return int(a % uint16(max)) -} - -func (f *fuzzer) randomTokenAmount(signed bool) int64 { - x := uint64(f.randomInt(65000)) - x = x * x * x * x - - if signed && (x&1) == 1 { - if x <= math.MaxInt64 { - return -int64(x) - } - return math.MinInt64 - } - if x <= math.MaxInt64 { - return int64(x) - } - return math.MaxInt64 -} - -func (f *fuzzer) randomDelay() time.Duration { - delay := f.randomByte() - if delay < 128 { - return time.Duration(delay) * time.Second - } - return 0 -} - -func (f *fuzzer) randomFactors() vfs.PriceFactors { - return vfs.PriceFactors{ - TimeFactor: float64(f.randomByte()) / 25500, - CapacityFactor: float64(f.randomByte()) / 255, - RequestFactor: float64(f.randomByte()) / 255, - } -} - -func (f *fuzzer) connectedBalanceOp(balance vfs.ConnectedBalance, id enode.ID) { - switch f.randomInt(3) { - case 0: - cost := uint64(f.randomTokenAmount(false)) - balance.RequestServed(cost) - doLog("Serve request cost", "id", id, "amount", cost) - case 1: - posFactor, negFactor := f.randomFactors(), f.randomFactors() - balance.SetPriceFactors(posFactor, negFactor) - doLog("Set price factor", "pos", posFactor, "neg", negFactor) - case 2: - balance.GetBalance() - balance.GetRawBalance() - balance.GetPriceFactors() - } -} - -func (f *fuzzer) atomicBalanceOp(balance vfs.AtomicBalanceOperator, id enode.ID) { - switch f.randomInt(3) { - case 0: - amount := f.randomTokenAmount(true) - balance.AddBalance(amount) - doLog("Add balance", "id", id, "amount", amount) - case 1: - pos, neg := uint64(f.randomTokenAmount(false)), uint64(f.randomTokenAmount(false)) - balance.SetBalance(pos, neg) - doLog("Set balance", "id", id, "pos", pos, "neg", neg) - case 2: - balance.GetBalance() - balance.GetRawBalance() - balance.GetPriceFactors() - } -} - -func fuzzClientPool(input []byte) int { - if len(input) > 10000 { - return -1 - } - f := newFuzzer(input) - if f.exhausted { - return 0 - } - clock := &mclock.Simulated{} - db := memorydb.New() - pool := vfs.NewClientPool(db, 10, f.randomDelay(), clock, func() bool { return true }) - pool.Start() - defer pool.Stop() - - count := 0 - for !f.exhausted && count < 1000 { - count++ - switch f.randomInt(11) { - case 0: - i := int(f.randomByte()) - f.peers[i].balance = pool.Register(f.peers[i]) - doLog("Register peer", "id", f.peers[i].node.ID()) - case 1: - i := int(f.randomByte()) - f.peers[i].Disconnect() - doLog("Disconnect peer", "id", f.peers[i].node.ID()) - case 2: - f.maxCount = uint64(f.randomByte()) - f.maxCap = uint64(f.randomByte()) - f.maxCap *= f.maxCap - - count, cap := pool.Limits() - pool.SetLimits(f.maxCount, f.maxCap) - doLog("Set limits", "maxcount", f.maxCount, "maxcap", f.maxCap, "origincount", count, "oricap", cap) - case 3: - bias := f.randomDelay() - pool.SetConnectedBias(f.randomDelay()) - doLog("Set connection bias", "bias", bias) - case 4: - pos, neg := f.randomFactors(), f.randomFactors() - pool.SetDefaultFactors(pos, neg) - doLog("Set default factors", "pos", pos, "neg", neg) - case 5: - pos, neg := uint64(f.randomInt(50000)), uint64(f.randomInt(50000)) - pool.SetExpirationTCs(pos, neg) - doLog("Set expiration constants", "pos", pos, "neg", neg) - case 6: - var ( - index = f.randomByte() - reqCap = uint64(f.randomByte()) - bias = f.randomDelay() - requested = f.randomBool() - ) - pool.SetCapacity(f.peers[index].node, reqCap, bias, requested) - doLog("Set capacity", "id", f.peers[index].node.ID(), "reqcap", reqCap, "bias", bias, "requested", requested) - case 7: - index := f.randomByte() - if balance := f.peers[index].balance; balance != nil { - f.connectedBalanceOp(balance, f.peers[index].node.ID()) - } - case 8: - index := f.randomByte() - pool.BalanceOperation(f.peers[index].node.ID(), f.peers[index].freeID, func(balance vfs.AtomicBalanceOperator) { - count := f.randomInt(4) - for i := 0; i < count; i++ { - f.atomicBalanceOp(balance, f.peers[index].node.ID()) - } - }) - case 9: - pool.TotalTokenAmount() - pool.GetExpirationTCs() - pool.Active() - pool.Limits() - pool.GetPosBalanceIDs(f.peers[f.randomByte()].node.ID(), f.peers[f.randomByte()].node.ID(), f.randomInt(100)) - case 10: - req := vflux.CapacityQueryReq{ - Bias: uint64(f.randomByte()), - AddTokens: make([]vflux.IntOrInf, f.randomInt(vflux.CapacityQueryMaxLen+1)), - } - for i := range req.AddTokens { - v := vflux.IntOrInf{Type: uint8(f.randomInt(4))} - if v.Type < 2 { - v.Value = *big.NewInt(f.randomTokenAmount(false)) - } - req.AddTokens[i] = v - } - reqEnc, err := rlp.EncodeToBytes(&req) - if err != nil { - panic(err) - } - p := int(f.randomByte()) - if p < len(reqEnc) { - reqEnc[p] = f.randomByte() - } - pool.Handle(f.peers[f.randomByte()].node.ID(), f.peers[f.randomByte()].freeID, vflux.CapacityQueryName, reqEnc) - } - - for _, peer := range f.disconnectList { - pool.Unregister(peer) - doLog("Unregister peer", "id", peer.node.ID()) - } - f.disconnectList = nil - if d := f.randomDelay(); d > 0 { - clock.Run(d) - } - doLog("Clientpool stats in fuzzer", "count", f.activeCap, "maxcount", f.maxCount, "cap", f.activeCap, "maxcap", f.maxCap) - activeCount, activeCap := pool.Active() - doLog("Clientpool stats in pool", "count", activeCount, "cap", activeCap) - if activeCount != f.activeCount || activeCap != f.activeCap { - panic(nil) - } - if f.activeCount > f.maxCount || f.activeCap > f.maxCap { - panic(nil) - } - } - return 0 -} diff --git a/tests/fuzzers/vflux/clientpool_test.go b/tests/fuzzers/vflux/clientpool_test.go deleted file mode 100644 index 40c5f22905..0000000000 --- a/tests/fuzzers/vflux/clientpool_test.go +++ /dev/null @@ -1,25 +0,0 @@ -// Copyright 2023 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package vflux - -import "testing" - -func FuzzClientPool(f *testing.F) { - f.Fuzz(func(t *testing.T, data []byte) { - fuzzClientPool(data) - }) -}