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245 lines
8.7 KiB
245 lines
8.7 KiB
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Package ethconfig contains the configuration of the ETH and LES protocols.
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package ethconfig
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import (
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"math/big"
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"os"
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"os/user"
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"path/filepath"
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"runtime"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/consensus"
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"github.com/ethereum/go-ethereum/consensus/beacon"
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"github.com/ethereum/go-ethereum/consensus/clique"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/eth/gasprice"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/miner"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/params"
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)
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// FullNodeGPO contains default gasprice oracle settings for full node.
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var FullNodeGPO = gasprice.Config{
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Blocks: 20,
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Percentile: 60,
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MaxHeaderHistory: 1024,
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MaxBlockHistory: 1024,
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MaxPrice: gasprice.DefaultMaxPrice,
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IgnorePrice: gasprice.DefaultIgnorePrice,
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}
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// LightClientGPO contains default gasprice oracle settings for light client.
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var LightClientGPO = gasprice.Config{
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Blocks: 2,
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Percentile: 60,
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MaxHeaderHistory: 300,
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MaxBlockHistory: 5,
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MaxPrice: gasprice.DefaultMaxPrice,
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IgnorePrice: gasprice.DefaultIgnorePrice,
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}
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// Defaults contains default settings for use on the Ethereum main net.
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var Defaults = Config{
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SyncMode: downloader.SnapSync,
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Ethash: ethash.Config{
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CacheDir: "ethash",
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CachesInMem: 2,
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CachesOnDisk: 3,
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CachesLockMmap: false,
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DatasetsInMem: 1,
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DatasetsOnDisk: 2,
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DatasetsLockMmap: false,
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},
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NetworkId: 1,
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TxLookupLimit: 2350000,
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LightPeers: 100,
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UltraLightFraction: 75,
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DatabaseCache: 512,
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TrieCleanCache: 154,
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TrieCleanCacheJournal: "triecache",
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TrieCleanCacheRejournal: 60 * time.Minute,
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TrieDirtyCache: 256,
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TrieTimeout: 60 * time.Minute,
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SnapshotCache: 102,
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Miner: miner.Config{
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GasCeil: 30000000,
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GasPrice: big.NewInt(params.GWei),
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Recommit: 3 * time.Second,
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},
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TxPool: core.DefaultTxPoolConfig,
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RPCGasCap: 50000000,
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RPCEVMTimeout: 5 * time.Second,
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GPO: FullNodeGPO,
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RPCTxFeeCap: 1, // 1 ether
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}
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func init() {
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home := os.Getenv("HOME")
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if home == "" {
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if user, err := user.Current(); err == nil {
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home = user.HomeDir
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}
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}
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if runtime.GOOS == "darwin" {
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Defaults.Ethash.DatasetDir = filepath.Join(home, "Library", "Ethash")
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} else if runtime.GOOS == "windows" {
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localappdata := os.Getenv("LOCALAPPDATA")
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if localappdata != "" {
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Defaults.Ethash.DatasetDir = filepath.Join(localappdata, "Ethash")
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} else {
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Defaults.Ethash.DatasetDir = filepath.Join(home, "AppData", "Local", "Ethash")
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}
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} else {
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Defaults.Ethash.DatasetDir = filepath.Join(home, ".ethash")
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}
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}
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//go:generate go run github.com/fjl/gencodec -type Config -formats toml -out gen_config.go
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// Config contains configuration options for of the ETH and LES protocols.
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type Config struct {
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// The genesis block, which is inserted if the database is empty.
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// If nil, the Ethereum main net block is used.
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Genesis *core.Genesis `toml:",omitempty"`
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// Protocol options
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NetworkId uint64 // Network ID to use for selecting peers to connect to
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SyncMode downloader.SyncMode
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// This can be set to list of enrtree:// URLs which will be queried for
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// for nodes to connect to.
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EthDiscoveryURLs []string
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SnapDiscoveryURLs []string
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NoPruning bool // Whether to disable pruning and flush everything to disk
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NoPrefetch bool // Whether to disable prefetching and only load state on demand
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TxLookupLimit uint64 `toml:",omitempty"` // The maximum number of blocks from head whose tx indices are reserved.
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// RequiredBlocks is a set of block number -> hash mappings which must be in the
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// canonical chain of all remote peers. Setting the option makes geth verify the
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// presence of these blocks for every new peer connection.
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RequiredBlocks map[uint64]common.Hash `toml:"-"`
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// Light client options
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LightServ int `toml:",omitempty"` // Maximum percentage of time allowed for serving LES requests
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LightIngress int `toml:",omitempty"` // Incoming bandwidth limit for light servers
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LightEgress int `toml:",omitempty"` // Outgoing bandwidth limit for light servers
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LightPeers int `toml:",omitempty"` // Maximum number of LES client peers
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LightNoPrune bool `toml:",omitempty"` // Whether to disable light chain pruning
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LightNoSyncServe bool `toml:",omitempty"` // Whether to serve light clients before syncing
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SyncFromCheckpoint bool `toml:",omitempty"` // Whether to sync the header chain from the configured checkpoint
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// Ultra Light client options
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UltraLightServers []string `toml:",omitempty"` // List of trusted ultra light servers
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UltraLightFraction int `toml:",omitempty"` // Percentage of trusted servers to accept an announcement
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UltraLightOnlyAnnounce bool `toml:",omitempty"` // Whether to only announce headers, or also serve them
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// Database options
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SkipBcVersionCheck bool `toml:"-"`
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DatabaseHandles int `toml:"-"`
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DatabaseCache int
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DatabaseFreezer string
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TrieCleanCache int
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TrieCleanCacheJournal string `toml:",omitempty"` // Disk journal directory for trie cache to survive node restarts
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TrieCleanCacheRejournal time.Duration `toml:",omitempty"` // Time interval to regenerate the journal for clean cache
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TrieDirtyCache int
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TrieTimeout time.Duration
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SnapshotCache int
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Preimages bool
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// Mining options
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Miner miner.Config
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// Ethash options
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Ethash ethash.Config
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// Transaction pool options
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TxPool core.TxPoolConfig
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// Gas Price Oracle options
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GPO gasprice.Config
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// Enables tracking of SHA3 preimages in the VM
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EnablePreimageRecording bool
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// Miscellaneous options
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DocRoot string `toml:"-"`
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// RPCGasCap is the global gas cap for eth-call variants.
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RPCGasCap uint64
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// RPCEVMTimeout is the global timeout for eth-call.
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RPCEVMTimeout time.Duration
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// RPCTxFeeCap is the global transaction fee(price * gaslimit) cap for
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// send-transction variants. The unit is ether.
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RPCTxFeeCap float64
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// Checkpoint is a hardcoded checkpoint which can be nil.
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Checkpoint *params.TrustedCheckpoint `toml:",omitempty"`
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// CheckpointOracle is the configuration for checkpoint oracle.
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CheckpointOracle *params.CheckpointOracleConfig `toml:",omitempty"`
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// Arrow Glacier block override (TODO: remove after the fork)
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OverrideArrowGlacier *big.Int `toml:",omitempty"`
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// OverrideTerminalTotalDifficulty (TODO: remove after the fork)
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OverrideTerminalTotalDifficulty *big.Int `toml:",omitempty"`
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}
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// CreateConsensusEngine creates a consensus engine for the given chain configuration.
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func CreateConsensusEngine(stack *node.Node, chainConfig *params.ChainConfig, config *ethash.Config, notify []string, noverify bool, db ethdb.Database) consensus.Engine {
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// If proof-of-authority is requested, set it up
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var engine consensus.Engine
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if chainConfig.Clique != nil {
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engine = clique.New(chainConfig.Clique, db)
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} else {
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switch config.PowMode {
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case ethash.ModeFake:
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log.Warn("Ethash used in fake mode")
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case ethash.ModeTest:
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log.Warn("Ethash used in test mode")
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case ethash.ModeShared:
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log.Warn("Ethash used in shared mode")
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}
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engine = ethash.New(ethash.Config{
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PowMode: config.PowMode,
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CacheDir: stack.ResolvePath(config.CacheDir),
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CachesInMem: config.CachesInMem,
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CachesOnDisk: config.CachesOnDisk,
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CachesLockMmap: config.CachesLockMmap,
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DatasetDir: config.DatasetDir,
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DatasetsInMem: config.DatasetsInMem,
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DatasetsOnDisk: config.DatasetsOnDisk,
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DatasetsLockMmap: config.DatasetsLockMmap,
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NotifyFull: config.NotifyFull,
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}, notify, noverify)
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engine.(*ethash.Ethash).SetThreads(-1) // Disable CPU mining
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}
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return beacon.New(engine)
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}
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