2cdf6ee7e0
This PR enables the indexers to work in light client mode by downloading a part of these tries (the Merkle proofs of the last values of the last known section) in order to be able to add new values and recalculate subsequent hashes. It also adds CHT data to NodeInfo.
428 lines
14 KiB
Go
428 lines
14 KiB
Go
// Copyright 2014 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 eth implements the Ethereum protocol.
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package eth
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import (
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"errors"
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"fmt"
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"math/big"
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"runtime"
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"sync"
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"sync/atomic"
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"github.com/ethereum/go-ethereum/accounts"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/consensus"
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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/bloombits"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/eth/filters"
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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/event"
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"github.com/ethereum/go-ethereum/internal/ethapi"
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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/p2p"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/rpc"
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)
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type LesServer interface {
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Start(srvr *p2p.Server)
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Stop()
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Protocols() []p2p.Protocol
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SetBloomBitsIndexer(bbIndexer *core.ChainIndexer)
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}
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// Ethereum implements the Ethereum full node service.
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type Ethereum struct {
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config *Config
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chainConfig *params.ChainConfig
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// Channel for shutting down the service
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shutdownChan chan bool // Channel for shutting down the Ethereum
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// Handlers
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txPool *core.TxPool
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blockchain *core.BlockChain
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protocolManager *ProtocolManager
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lesServer LesServer
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// DB interfaces
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chainDb ethdb.Database // Block chain database
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eventMux *event.TypeMux
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engine consensus.Engine
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accountManager *accounts.Manager
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bloomRequests chan chan *bloombits.Retrieval // Channel receiving bloom data retrieval requests
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bloomIndexer *core.ChainIndexer // Bloom indexer operating during block imports
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APIBackend *EthAPIBackend
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miner *miner.Miner
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gasPrice *big.Int
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etherbase common.Address
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networkID uint64
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netRPCService *ethapi.PublicNetAPI
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lock sync.RWMutex // Protects the variadic fields (e.g. gas price and etherbase)
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}
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func (s *Ethereum) AddLesServer(ls LesServer) {
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s.lesServer = ls
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ls.SetBloomBitsIndexer(s.bloomIndexer)
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}
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// New creates a new Ethereum object (including the
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// initialisation of the common Ethereum object)
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func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
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if config.SyncMode == downloader.LightSync {
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return nil, errors.New("can't run eth.Ethereum in light sync mode, use les.LightEthereum")
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}
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if !config.SyncMode.IsValid() {
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return nil, fmt.Errorf("invalid sync mode %d", config.SyncMode)
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}
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chainDb, err := CreateDB(ctx, config, "chaindata")
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if err != nil {
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return nil, err
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}
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chainConfig, genesisHash, genesisErr := core.SetupGenesisBlock(chainDb, config.Genesis)
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if _, ok := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !ok {
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return nil, genesisErr
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}
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log.Info("Initialised chain configuration", "config", chainConfig)
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eth := &Ethereum{
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config: config,
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chainDb: chainDb,
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chainConfig: chainConfig,
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eventMux: ctx.EventMux,
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accountManager: ctx.AccountManager,
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engine: CreateConsensusEngine(ctx, chainConfig, &config.Ethash, config.MinerNotify, chainDb),
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shutdownChan: make(chan bool),
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networkID: config.NetworkId,
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gasPrice: config.GasPrice,
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etherbase: config.Etherbase,
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bloomRequests: make(chan chan *bloombits.Retrieval),
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bloomIndexer: NewBloomIndexer(chainDb, params.BloomBitsBlocks, bloomConfirms),
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}
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log.Info("Initialising Ethereum protocol", "versions", ProtocolVersions, "network", config.NetworkId)
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if !config.SkipBcVersionCheck {
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bcVersion := rawdb.ReadDatabaseVersion(chainDb)
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if bcVersion != core.BlockChainVersion && bcVersion != 0 {
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return nil, fmt.Errorf("Blockchain DB version mismatch (%d / %d). Run geth upgradedb.\n", bcVersion, core.BlockChainVersion)
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}
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rawdb.WriteDatabaseVersion(chainDb, core.BlockChainVersion)
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}
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var (
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vmConfig = vm.Config{EnablePreimageRecording: config.EnablePreimageRecording}
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cacheConfig = &core.CacheConfig{Disabled: config.NoPruning, TrieNodeLimit: config.TrieCache, TrieTimeLimit: config.TrieTimeout}
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)
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eth.blockchain, err = core.NewBlockChain(chainDb, cacheConfig, eth.chainConfig, eth.engine, vmConfig)
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if err != nil {
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return nil, err
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}
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// Rewind the chain in case of an incompatible config upgrade.
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if compat, ok := genesisErr.(*params.ConfigCompatError); ok {
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log.Warn("Rewinding chain to upgrade configuration", "err", compat)
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eth.blockchain.SetHead(compat.RewindTo)
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rawdb.WriteChainConfig(chainDb, genesisHash, chainConfig)
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}
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eth.bloomIndexer.Start(eth.blockchain)
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if config.TxPool.Journal != "" {
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config.TxPool.Journal = ctx.ResolvePath(config.TxPool.Journal)
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}
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eth.txPool = core.NewTxPool(config.TxPool, eth.chainConfig, eth.blockchain)
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if eth.protocolManager, err = NewProtocolManager(eth.chainConfig, config.SyncMode, config.NetworkId, eth.eventMux, eth.txPool, eth.engine, eth.blockchain, chainDb); err != nil {
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return nil, err
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}
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eth.miner = miner.New(eth, eth.chainConfig, eth.EventMux(), eth.engine)
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eth.miner.SetExtra(makeExtraData(config.ExtraData))
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eth.APIBackend = &EthAPIBackend{eth, nil}
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gpoParams := config.GPO
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if gpoParams.Default == nil {
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gpoParams.Default = config.GasPrice
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}
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eth.APIBackend.gpo = gasprice.NewOracle(eth.APIBackend, gpoParams)
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return eth, nil
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}
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func makeExtraData(extra []byte) []byte {
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if len(extra) == 0 {
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// create default extradata
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extra, _ = rlp.EncodeToBytes([]interface{}{
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uint(params.VersionMajor<<16 | params.VersionMinor<<8 | params.VersionPatch),
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"geth",
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runtime.Version(),
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runtime.GOOS,
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})
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}
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if uint64(len(extra)) > params.MaximumExtraDataSize {
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log.Warn("Miner extra data exceed limit", "extra", hexutil.Bytes(extra), "limit", params.MaximumExtraDataSize)
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extra = nil
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}
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return extra
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}
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// CreateDB creates the chain database.
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func CreateDB(ctx *node.ServiceContext, config *Config, name string) (ethdb.Database, error) {
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db, err := ctx.OpenDatabase(name, config.DatabaseCache, config.DatabaseHandles)
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if err != nil {
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return nil, err
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}
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if db, ok := db.(*ethdb.LDBDatabase); ok {
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db.Meter("eth/db/chaindata/")
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}
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return db, nil
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}
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// CreateConsensusEngine creates the required type of consensus engine instance for an Ethereum service
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func CreateConsensusEngine(ctx *node.ServiceContext, chainConfig *params.ChainConfig, config *ethash.Config, notify []string, db ethdb.Database) consensus.Engine {
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// If proof-of-authority is requested, set it up
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if chainConfig.Clique != nil {
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return clique.New(chainConfig.Clique, db)
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}
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// Otherwise assume proof-of-work
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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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return ethash.NewFaker()
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case ethash.ModeTest:
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log.Warn("Ethash used in test mode")
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return ethash.NewTester(nil)
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case ethash.ModeShared:
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log.Warn("Ethash used in shared mode")
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return ethash.NewShared()
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default:
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engine := ethash.New(ethash.Config{
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CacheDir: ctx.ResolvePath(config.CacheDir),
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CachesInMem: config.CachesInMem,
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CachesOnDisk: config.CachesOnDisk,
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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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}, notify)
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engine.SetThreads(-1) // Disable CPU mining
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return engine
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}
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}
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// APIs return the collection of RPC services the ethereum package offers.
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// NOTE, some of these services probably need to be moved to somewhere else.
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func (s *Ethereum) APIs() []rpc.API {
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apis := ethapi.GetAPIs(s.APIBackend)
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// Append any APIs exposed explicitly by the consensus engine
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apis = append(apis, s.engine.APIs(s.BlockChain())...)
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// Append all the local APIs and return
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return append(apis, []rpc.API{
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{
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Namespace: "eth",
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Version: "1.0",
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Service: NewPublicEthereumAPI(s),
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Public: true,
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}, {
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Namespace: "eth",
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Version: "1.0",
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Service: NewPublicMinerAPI(s),
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Public: true,
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}, {
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Namespace: "eth",
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Version: "1.0",
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Service: downloader.NewPublicDownloaderAPI(s.protocolManager.downloader, s.eventMux),
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Public: true,
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}, {
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Namespace: "miner",
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Version: "1.0",
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Service: NewPrivateMinerAPI(s),
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Public: false,
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}, {
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Namespace: "eth",
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Version: "1.0",
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Service: filters.NewPublicFilterAPI(s.APIBackend, false),
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Public: true,
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}, {
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Namespace: "admin",
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Version: "1.0",
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Service: NewPrivateAdminAPI(s),
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}, {
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Namespace: "debug",
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Version: "1.0",
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Service: NewPublicDebugAPI(s),
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Public: true,
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}, {
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Namespace: "debug",
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Version: "1.0",
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Service: NewPrivateDebugAPI(s.chainConfig, s),
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}, {
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Namespace: "net",
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Version: "1.0",
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Service: s.netRPCService,
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Public: true,
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},
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}...)
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}
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func (s *Ethereum) ResetWithGenesisBlock(gb *types.Block) {
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s.blockchain.ResetWithGenesisBlock(gb)
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}
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func (s *Ethereum) Etherbase() (eb common.Address, err error) {
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s.lock.RLock()
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etherbase := s.etherbase
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s.lock.RUnlock()
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if etherbase != (common.Address{}) {
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return etherbase, nil
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}
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if wallets := s.AccountManager().Wallets(); len(wallets) > 0 {
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if accounts := wallets[0].Accounts(); len(accounts) > 0 {
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etherbase := accounts[0].Address
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s.lock.Lock()
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s.etherbase = etherbase
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s.lock.Unlock()
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log.Info("Etherbase automatically configured", "address", etherbase)
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return etherbase, nil
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}
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}
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return common.Address{}, fmt.Errorf("etherbase must be explicitly specified")
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}
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// SetEtherbase sets the mining reward address.
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func (s *Ethereum) SetEtherbase(etherbase common.Address) {
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s.lock.Lock()
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s.etherbase = etherbase
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s.lock.Unlock()
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s.miner.SetEtherbase(etherbase)
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}
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func (s *Ethereum) StartMining(local bool) error {
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eb, err := s.Etherbase()
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if err != nil {
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log.Error("Cannot start mining without etherbase", "err", err)
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return fmt.Errorf("etherbase missing: %v", err)
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}
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if clique, ok := s.engine.(*clique.Clique); ok {
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wallet, err := s.accountManager.Find(accounts.Account{Address: eb})
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if wallet == nil || err != nil {
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log.Error("Etherbase account unavailable locally", "err", err)
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return fmt.Errorf("signer missing: %v", err)
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}
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clique.Authorize(eb, wallet.SignHash)
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}
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if local {
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// If local (CPU) mining is started, we can disable the transaction rejection
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// mechanism introduced to speed sync times. CPU mining on mainnet is ludicrous
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// so none will ever hit this path, whereas marking sync done on CPU mining
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// will ensure that private networks work in single miner mode too.
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atomic.StoreUint32(&s.protocolManager.acceptTxs, 1)
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}
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go s.miner.Start(eb)
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return nil
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}
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func (s *Ethereum) StopMining() { s.miner.Stop() }
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func (s *Ethereum) IsMining() bool { return s.miner.Mining() }
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func (s *Ethereum) Miner() *miner.Miner { return s.miner }
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func (s *Ethereum) AccountManager() *accounts.Manager { return s.accountManager }
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func (s *Ethereum) BlockChain() *core.BlockChain { return s.blockchain }
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func (s *Ethereum) TxPool() *core.TxPool { return s.txPool }
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func (s *Ethereum) EventMux() *event.TypeMux { return s.eventMux }
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func (s *Ethereum) Engine() consensus.Engine { return s.engine }
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func (s *Ethereum) ChainDb() ethdb.Database { return s.chainDb }
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func (s *Ethereum) IsListening() bool { return true } // Always listening
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func (s *Ethereum) EthVersion() int { return int(s.protocolManager.SubProtocols[0].Version) }
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func (s *Ethereum) NetVersion() uint64 { return s.networkID }
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func (s *Ethereum) Downloader() *downloader.Downloader { return s.protocolManager.downloader }
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// Protocols implements node.Service, returning all the currently configured
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// network protocols to start.
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func (s *Ethereum) Protocols() []p2p.Protocol {
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if s.lesServer == nil {
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return s.protocolManager.SubProtocols
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}
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return append(s.protocolManager.SubProtocols, s.lesServer.Protocols()...)
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}
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// Start implements node.Service, starting all internal goroutines needed by the
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// Ethereum protocol implementation.
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func (s *Ethereum) Start(srvr *p2p.Server) error {
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// Start the bloom bits servicing goroutines
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s.startBloomHandlers()
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// Start the RPC service
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s.netRPCService = ethapi.NewPublicNetAPI(srvr, s.NetVersion())
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// Figure out a max peers count based on the server limits
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maxPeers := srvr.MaxPeers
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if s.config.LightServ > 0 {
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if s.config.LightPeers >= srvr.MaxPeers {
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return fmt.Errorf("invalid peer config: light peer count (%d) >= total peer count (%d)", s.config.LightPeers, srvr.MaxPeers)
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}
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maxPeers -= s.config.LightPeers
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}
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// Start the networking layer and the light server if requested
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s.protocolManager.Start(maxPeers)
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if s.lesServer != nil {
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s.lesServer.Start(srvr)
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}
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return nil
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}
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// Stop implements node.Service, terminating all internal goroutines used by the
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// Ethereum protocol.
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func (s *Ethereum) Stop() error {
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s.bloomIndexer.Close()
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s.blockchain.Stop()
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s.engine.Close()
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s.protocolManager.Stop()
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if s.lesServer != nil {
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s.lesServer.Stop()
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}
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s.txPool.Stop()
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s.miner.Stop()
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s.eventMux.Stop()
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s.chainDb.Close()
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close(s.shutdownChan)
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return nil
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}
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