59f7b289c3
The clean trie cache is persisted periodically, therefore Geth can quickly warmup the cache in next restart. However it will reduce the robustness of system. The assumption is held in Geth that if the parent trie node is present, then the entire sub-trie associated with the parent are all prensent. Imagine the scenario that Geth rewinds itself to a past block and restart, but Geth finds the root node of "future state" in clean cache then regard this state is present in disk, while is not in fact. Another example is offline pruning tool. Whenever an offline pruning is performed, the clean cache file has to be removed to aviod hitting the root node of "deleted states" in clean cache. All in all, compare with the minor performance gain, system robustness is something we care more.
182 lines
6.6 KiB
Go
182 lines
6.6 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/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: 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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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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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 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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// 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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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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// 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 and more, 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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