190 lines
7.1 KiB
Go
190 lines
7.1 KiB
Go
// Copyright 2021 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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"errors"
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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/core/txpool/blobpool"
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"github.com/ethereum/go-ethereum/core/txpool/legacypool"
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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/miner"
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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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NetworkId: 0, // enable auto configuration of networkID == chainID
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TxLookupLimit: 2350000,
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TransactionHistory: 2350000,
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StateHistory: params.FullImmutabilityThreshold,
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LightPeers: 100,
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DatabaseCache: 512,
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TrieCleanCache: 154,
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TrieDirtyCache: 256,
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TrieTimeout: 60 * time.Minute,
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SnapshotCache: 102,
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FilterLogCacheSize: 32,
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Miner: miner.DefaultConfig,
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TxPool: legacypool.DefaultConfig,
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BlobPool: blobpool.DefaultConfig,
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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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//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 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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// Network ID separates blockchains on the peer-to-peer networking level. When left
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// zero, the chain ID is used as network ID.
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NetworkId uint64
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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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// Deprecated, use 'TransactionHistory' instead.
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TxLookupLimit uint64 `toml:",omitempty"` // The maximum number of blocks from head whose tx indices are reserved.
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TransactionHistory uint64 `toml:",omitempty"` // The maximum number of blocks from head whose tx indices are reserved.
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StateHistory uint64 `toml:",omitempty"` // The maximum number of blocks from head whose state histories are reserved.
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// State scheme represents the scheme used to store ethereum states and trie
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// nodes on top. It can be 'hash', 'path', or none which means use the scheme
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// consistent with persistent state.
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StateScheme string `toml:",omitempty"`
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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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// 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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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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// This is the number of blocks for which logs will be cached in the filter system.
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FilterLogCacheSize int
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// Mining options
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Miner miner.Config
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// Transaction pool options
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TxPool legacypool.Config
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BlobPool blobpool.Config
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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-transaction variants. The unit is ether.
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RPCTxFeeCap float64
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// OverrideCancun (TODO: remove after the fork)
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OverrideCancun *uint64 `toml:",omitempty"`
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// OverrideVerkle (TODO: remove after the fork)
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OverrideVerkle *uint64 `toml:",omitempty"`
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}
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// CreateConsensusEngine creates a consensus engine for the given chain config.
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// Clique is allowed for now to live standalone, but ethash is forbidden and can
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// only exist on already merged networks.
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func CreateConsensusEngine(config *params.ChainConfig, db ethdb.Database) (consensus.Engine, error) {
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// If proof-of-authority is requested, set it up
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if config.Clique != nil {
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return beacon.New(clique.New(config.Clique, db)), nil
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}
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// If defaulting to proof-of-work, enforce an already merged network since
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// we cannot run PoW algorithms anymore, so we cannot even follow a chain
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// not coordinated by a beacon node.
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if !config.TerminalTotalDifficultyPassed {
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return nil, errors.New("ethash is only supported as a historical component of already merged networks")
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}
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return beacon.New(ethash.NewFaker()), nil
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}
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