Official Go implementation of the Ethereum protocol
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go-ethereum/miner/stress/beacon/main.go

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// 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 <http://www.gnu.org/licenses/>.
// This file contains a miner stress test for the eth1/2 transition
package main
import (
"crypto/ecdsa"
"errors"
"math/big"
"math/rand"
"os"
"path/filepath"
"time"
"github.com/ethereum/go-ethereum/accounts/keystore"
"github.com/ethereum/go-ethereum/beacon/engine"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/fdlimit"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"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"
ethcatalyst "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/les"
lescatalyst "github.com/ethereum/go-ethereum/les/catalyst"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/miner"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/params"
)
type nodetype int
const (
legacyMiningNode nodetype = iota
legacyNormalNode
eth2MiningNode
eth2NormalNode
eth2LightClient
)
func (typ nodetype) String() string {
switch typ {
case legacyMiningNode:
return "legacyMiningNode"
case legacyNormalNode:
return "legacyNormalNode"
case eth2MiningNode:
return "eth2MiningNode"
case eth2NormalNode:
return "eth2NormalNode"
case eth2LightClient:
return "eth2LightClient"
default:
return "undefined"
}
}
var (
// transitionDifficulty is the target total difficulty for transition
transitionDifficulty = new(big.Int).Mul(big.NewInt(20), params.MinimumDifficulty)
// blockInterval is the time interval for creating a new eth2 block
blockIntervalInt = 3
blockInterval = time.Second * time.Duration(blockIntervalInt)
// finalizationDist is the block distance for finalizing block
finalizationDist = 10
)
type ethNode struct {
typ nodetype
stack *node.Node
enode *enode.Node
api *ethcatalyst.ConsensusAPI
ethBackend *eth.Ethereum
lapi *lescatalyst.ConsensusAPI
lesBackend *les.LightEthereum
}
func newNode(typ nodetype, genesis *core.Genesis, enodes []*enode.Node) *ethNode {
var (
err error
api *ethcatalyst.ConsensusAPI
lapi *lescatalyst.ConsensusAPI
stack *node.Node
ethBackend *eth.Ethereum
lesBackend *les.LightEthereum
)
// Start the node and wait until it's up
if typ == eth2LightClient {
stack, lesBackend, lapi, err = makeLightNode(genesis)
} else {
stack, ethBackend, api, err = makeFullNode(genesis)
}
if err != nil {
panic(err)
}
for stack.Server().NodeInfo().Ports.Listener == 0 {
time.Sleep(250 * time.Millisecond)
}
// Connect the node to all the previous ones
for _, n := range enodes {
stack.Server().AddPeer(n)
}
enode := stack.Server().Self()
// Inject the signer key and start sealing with it
stack.AccountManager().AddBackend(keystore.NewPlaintextKeyStore("beacon-stress"))
store := stack.AccountManager().Backends(keystore.KeyStoreType)[0].(*keystore.KeyStore)
if _, err := store.NewAccount(""); err != nil {
panic(err)
}
return &ethNode{
typ: typ,
api: api,
ethBackend: ethBackend,
lapi: lapi,
lesBackend: lesBackend,
stack: stack,
enode: enode,
}
}
func (n *ethNode) assembleBlock(parentHash common.Hash, parentTimestamp uint64) (*engine.ExecutableData, error) {
if n.typ != eth2MiningNode {
return nil, errors.New("invalid node type")
}
timestamp := uint64(time.Now().Unix())
if timestamp <= parentTimestamp {
timestamp = parentTimestamp + 1
}
payloadAttribute := engine.PayloadAttributes{
Timestamp: timestamp,
Random: common.Hash{},
SuggestedFeeRecipient: common.HexToAddress("0xdeadbeef"),
}
fcState := engine.ForkchoiceStateV1{
HeadBlockHash: parentHash,
SafeBlockHash: common.Hash{},
FinalizedBlockHash: common.Hash{},
}
payload, err := n.api.ForkchoiceUpdatedV1(fcState, &payloadAttribute)
if err != nil {
return nil, err
}
time.Sleep(time.Second * 5) // give enough time for block creation
return n.api.GetPayloadV1(*payload.PayloadID)
}
func (n *ethNode) insertBlock(eb engine.ExecutableData) error {
if !eth2types(n.typ) {
return errors.New("invalid node type")
}
switch n.typ {
case eth2NormalNode, eth2MiningNode:
newResp, err := n.api.NewPayloadV1(eb)
if err != nil {
return err
} else if newResp.Status != "VALID" {
return errors.New("failed to insert block")
}
return nil
case eth2LightClient:
newResp, err := n.lapi.ExecutePayloadV1(eb)
if err != nil {
return err
} else if newResp.Status != "VALID" {
return errors.New("failed to insert block")
}
return nil
default:
return errors.New("undefined node")
}
}
func (n *ethNode) insertBlockAndSetHead(parent *types.Header, ed engine.ExecutableData) error {
if !eth2types(n.typ) {
return errors.New("invalid node type")
}
if err := n.insertBlock(ed); err != nil {
return err
}
block, err := engine.ExecutableDataToBlock(ed)
if err != nil {
return err
}
fcState := engine.ForkchoiceStateV1{
HeadBlockHash: block.ParentHash(),
SafeBlockHash: common.Hash{},
FinalizedBlockHash: common.Hash{},
}
switch n.typ {
case eth2NormalNode, eth2MiningNode:
if _, err := n.api.ForkchoiceUpdatedV1(fcState, nil); err != nil {
return err
}
return nil
case eth2LightClient:
if _, err := n.lapi.ForkchoiceUpdatedV1(fcState, nil); err != nil {
return err
}
return nil
default:
return errors.New("undefined node")
}
}
type nodeManager struct {
genesis *core.Genesis
genesisBlock *types.Block
nodes []*ethNode
enodes []*enode.Node
close chan struct{}
}
func newNodeManager(genesis *core.Genesis) *nodeManager {
return &nodeManager{
close: make(chan struct{}),
genesis: genesis,
genesisBlock: genesis.ToBlock(),
}
}
func (mgr *nodeManager) createNode(typ nodetype) {
node := newNode(typ, mgr.genesis, mgr.enodes)
mgr.nodes = append(mgr.nodes, node)
mgr.enodes = append(mgr.enodes, node.enode)
}
func (mgr *nodeManager) getNodes(typ nodetype) []*ethNode {
var ret []*ethNode
for _, node := range mgr.nodes {
if node.typ == typ {
ret = append(ret, node)
}
}
return ret
}
func (mgr *nodeManager) startMining() {
for _, node := range append(mgr.getNodes(eth2MiningNode), mgr.getNodes(legacyMiningNode)...) {
if err := node.ethBackend.StartMining(1); err != nil {
panic(err)
}
}
}
func (mgr *nodeManager) shutdown() {
close(mgr.close)
for _, node := range mgr.nodes {
node.stack.Close()
}
}
func (mgr *nodeManager) run() {
if len(mgr.nodes) == 0 {
return
}
chain := mgr.nodes[0].ethBackend.BlockChain()
sink := make(chan core.ChainHeadEvent, 1024)
sub := chain.SubscribeChainHeadEvent(sink)
defer sub.Unsubscribe()
var (
transitioned bool
parentBlock *types.Block
waitFinalise []*types.Block
)
timer := time.NewTimer(0)
defer timer.Stop()
<-timer.C // discard the initial tick
// Handle the by default transition.
if transitionDifficulty.Sign() == 0 {
transitioned = true
parentBlock = mgr.genesisBlock
timer.Reset(blockInterval)
log.Info("Enable the transition by default")
}
// Handle the block finalization.
checkFinalise := func() {
if parentBlock == nil {
return
}
if len(waitFinalise) == 0 {
return
}
oldest := waitFinalise[0]
if oldest.NumberU64() > parentBlock.NumberU64() {
return
}
distance := parentBlock.NumberU64() - oldest.NumberU64()
if int(distance) < finalizationDist {
return
}
nodes := mgr.getNodes(eth2MiningNode)
nodes = append(nodes, mgr.getNodes(eth2NormalNode)...)
//nodes = append(nodes, mgr.getNodes(eth2LightClient)...)
for _, node := range nodes {
fcState := engine.ForkchoiceStateV1{
HeadBlockHash: parentBlock.Hash(),
SafeBlockHash: oldest.Hash(),
FinalizedBlockHash: oldest.Hash(),
}
node.api.ForkchoiceUpdatedV1(fcState, nil)
}
log.Info("Finalised eth2 block", "number", oldest.NumberU64(), "hash", oldest.Hash())
waitFinalise = waitFinalise[1:]
}
for {
checkFinalise()
select {
case <-mgr.close:
return
case ev := <-sink:
if transitioned {
continue
}
td := chain.GetTd(ev.Block.Hash(), ev.Block.NumberU64())
if td.Cmp(transitionDifficulty) < 0 {
continue
}
transitioned, parentBlock = true, ev.Block
timer.Reset(blockInterval)
log.Info("Transition difficulty reached", "td", td, "target", transitionDifficulty, "number", ev.Block.NumberU64(), "hash", ev.Block.Hash())
case <-timer.C:
producers := mgr.getNodes(eth2MiningNode)
if len(producers) == 0 {
continue
}
hash, timestamp := parentBlock.Hash(), parentBlock.Time()
if parentBlock.NumberU64() == 0 {
timestamp = uint64(time.Now().Unix()) - uint64(blockIntervalInt)
}
ed, err := producers[0].assembleBlock(hash, timestamp)
if err != nil {
log.Error("Failed to assemble the block", "err", err)
continue
}
block, _ := engine.ExecutableDataToBlock(*ed)
nodes := mgr.getNodes(eth2MiningNode)
nodes = append(nodes, mgr.getNodes(eth2NormalNode)...)
nodes = append(nodes, mgr.getNodes(eth2LightClient)...)
for _, node := range nodes {
if err := node.insertBlockAndSetHead(parentBlock.Header(), *ed); err != nil {
log.Error("Failed to insert block", "type", node.typ, "err", err)
}
}
log.Info("Create and insert eth2 block", "number", ed.Number)
parentBlock = block
waitFinalise = append(waitFinalise, block)
timer.Reset(blockInterval)
}
}
}
func main() {
log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
fdlimit.Raise(2048)
// Generate a batch of accounts to seal and fund with
faucets := make([]*ecdsa.PrivateKey, 16)
for i := 0; i < len(faucets); i++ {
faucets[i], _ = crypto.GenerateKey()
}
// Pre-generate the ethash mining DAG so we don't race
ethash.MakeDataset(1, filepath.Join(os.Getenv("HOME"), ".ethash"))
// Create an Ethash network
genesis := makeGenesis(faucets)
manager := newNodeManager(genesis)
defer manager.shutdown()
manager.createNode(eth2NormalNode)
manager.createNode(eth2MiningNode)
manager.createNode(legacyMiningNode)
manager.createNode(legacyNormalNode)
manager.createNode(eth2LightClient)
// Iterate over all the nodes and start mining
time.Sleep(3 * time.Second)
if transitionDifficulty.Sign() != 0 {
manager.startMining()
}
go manager.run()
// Start injecting transactions from the faucets like crazy
time.Sleep(3 * time.Second)
nonces := make([]uint64, len(faucets))
for {
// Pick a random mining node
nodes := manager.getNodes(eth2MiningNode)
index := rand.Intn(len(faucets))
node := nodes[index%len(nodes)]
// Create a self transaction and inject into the pool
tx, err := types.SignTx(types.NewTransaction(nonces[index], crypto.PubkeyToAddress(faucets[index].PublicKey), new(big.Int), 21000, big.NewInt(10_000_000_000+rand.Int63n(6_553_600_000)), nil), types.HomesteadSigner{}, faucets[index])
if err != nil {
panic(err)
}
if err := node.ethBackend.TxPool().AddLocal(tx); err != nil {
panic(err)
}
nonces[index]++
// Wait if we're too saturated
if pend, _ := node.ethBackend.TxPool().Stats(); pend > 2048 {
time.Sleep(100 * time.Millisecond)
}
}
}
// makeGenesis creates a custom Ethash genesis block based on some pre-defined
// faucet accounts.
func makeGenesis(faucets []*ecdsa.PrivateKey) *core.Genesis {
genesis := core.DefaultGenesisBlock()
genesis.Difficulty = params.MinimumDifficulty
genesis.GasLimit = 25000000
genesis.BaseFee = big.NewInt(params.InitialBaseFee)
genesis.Config = params.AllEthashProtocolChanges
genesis.Config.TerminalTotalDifficulty = transitionDifficulty
genesis.Alloc = core.GenesisAlloc{}
for _, faucet := range faucets {
genesis.Alloc[crypto.PubkeyToAddress(faucet.PublicKey)] = core.GenesisAccount{
Balance: new(big.Int).Exp(big.NewInt(2), big.NewInt(128), nil),
}
}
return genesis
}
func makeFullNode(genesis *core.Genesis) (*node.Node, *eth.Ethereum, *ethcatalyst.ConsensusAPI, error) {
// Define the basic configurations for the Ethereum node
datadir, _ := os.MkdirTemp("", "")
config := &node.Config{
Name: "geth",
Version: params.Version,
DataDir: datadir,
P2P: p2p.Config{
ListenAddr: "0.0.0.0:0",
NoDiscovery: true,
MaxPeers: 25,
},
UseLightweightKDF: true,
}
// Create the node and configure a full Ethereum node on it
stack, err := node.New(config)
if err != nil {
return nil, nil, nil, err
}
econfig := &ethconfig.Config{
Genesis: genesis,
NetworkId: genesis.Config.ChainID.Uint64(),
SyncMode: downloader.FullSync,
DatabaseCache: 256,
DatabaseHandles: 256,
TxPool: txpool.DefaultConfig,
GPO: ethconfig.Defaults.GPO,
Ethash: ethconfig.Defaults.Ethash,
Miner: miner.Config{
GasFloor: genesis.GasLimit * 9 / 10,
GasCeil: genesis.GasLimit * 11 / 10,
GasPrice: big.NewInt(1),
Recommit: 1 * time.Second,
},
LightServ: 100,
LightPeers: 10,
LightNoSyncServe: true,
}
ethBackend, err := eth.New(stack, econfig)
if err != nil {
return nil, nil, nil, err
}
_, err = les.NewLesServer(stack, ethBackend, econfig)
if err != nil {
log.Crit("Failed to create the LES server", "err", err)
}
err = stack.Start()
return stack, ethBackend, ethcatalyst.NewConsensusAPI(ethBackend), err
}
func makeLightNode(genesis *core.Genesis) (*node.Node, *les.LightEthereum, *lescatalyst.ConsensusAPI, error) {
// Define the basic configurations for the Ethereum node
datadir, _ := os.MkdirTemp("", "")
config := &node.Config{
Name: "geth",
Version: params.Version,
DataDir: datadir,
P2P: p2p.Config{
ListenAddr: "0.0.0.0:0",
NoDiscovery: true,
MaxPeers: 25,
},
UseLightweightKDF: true,
}
// Create the node and configure a full Ethereum node on it
stack, err := node.New(config)
if err != nil {
return nil, nil, nil, err
}
lesBackend, err := les.New(stack, &ethconfig.Config{
Genesis: genesis,
NetworkId: genesis.Config.ChainID.Uint64(),
SyncMode: downloader.LightSync,
DatabaseCache: 256,
DatabaseHandles: 256,
TxPool: txpool.DefaultConfig,
GPO: ethconfig.Defaults.GPO,
Ethash: ethconfig.Defaults.Ethash,
LightPeers: 10,
})
if err != nil {
return nil, nil, nil, err
}
err = stack.Start()
return stack, lesBackend, lescatalyst.NewConsensusAPI(lesBackend), err
}
func eth2types(typ nodetype) bool {
if typ == eth2LightClient || typ == eth2NormalNode || typ == eth2MiningNode {
return true
}
return false
}