4e36b1e3da
The transaction pool keeps track of the current nonce in its local pendingState. When a new block comes in the pendingState is reset. During the reset it fetches multiple times the current state through the use of the currentState callback. When a second block comes in during the reset its possible that the state changes during the reset. If that block holds transactions that are currently in the pool the local pendingState that is used to determine nonces can get out of sync.
221 lines
6.6 KiB
Go
221 lines
6.6 KiB
Go
// Copyright 2015 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
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import (
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"math/big"
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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/core"
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"github.com/ethereum/go-ethereum/core/state"
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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/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/params"
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rpc "github.com/ethereum/go-ethereum/rpc"
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"golang.org/x/net/context"
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)
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// EthApiBackend implements ethapi.Backend for full nodes
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type EthApiBackend struct {
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eth *Ethereum
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gpo *gasprice.GasPriceOracle
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}
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func (b *EthApiBackend) ChainConfig() *params.ChainConfig {
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return b.eth.chainConfig
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}
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func (b *EthApiBackend) CurrentBlock() *types.Block {
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return b.eth.blockchain.CurrentBlock()
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}
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func (b *EthApiBackend) SetHead(number uint64) {
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b.eth.blockchain.SetHead(number)
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}
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func (b *EthApiBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) {
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// Pending block is only known by the miner
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if blockNr == rpc.PendingBlockNumber {
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block := b.eth.miner.PendingBlock()
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return block.Header(), nil
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}
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// Otherwise resolve and return the block
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if blockNr == rpc.LatestBlockNumber {
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return b.eth.blockchain.CurrentBlock().Header(), nil
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}
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return b.eth.blockchain.GetHeaderByNumber(uint64(blockNr)), nil
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}
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func (b *EthApiBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error) {
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// Pending block is only known by the miner
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if blockNr == rpc.PendingBlockNumber {
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block := b.eth.miner.PendingBlock()
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return block, nil
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}
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// Otherwise resolve and return the block
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if blockNr == rpc.LatestBlockNumber {
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return b.eth.blockchain.CurrentBlock(), nil
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}
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return b.eth.blockchain.GetBlockByNumber(uint64(blockNr)), nil
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}
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func (b *EthApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (ethapi.State, *types.Header, error) {
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// Pending state is only known by the miner
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if blockNr == rpc.PendingBlockNumber {
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block, state := b.eth.miner.Pending()
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return EthApiState{state}, block.Header(), nil
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}
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// Otherwise resolve the block number and return its state
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header, err := b.HeaderByNumber(ctx, blockNr)
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if header == nil || err != nil {
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return nil, nil, err
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}
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stateDb, err := b.eth.BlockChain().StateAt(header.Root)
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return EthApiState{stateDb}, header, err
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}
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func (b *EthApiBackend) GetBlock(ctx context.Context, blockHash common.Hash) (*types.Block, error) {
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return b.eth.blockchain.GetBlockByHash(blockHash), nil
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}
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func (b *EthApiBackend) GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error) {
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return core.GetBlockReceipts(b.eth.chainDb, blockHash, core.GetBlockNumber(b.eth.chainDb, blockHash)), nil
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}
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func (b *EthApiBackend) GetTd(blockHash common.Hash) *big.Int {
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return b.eth.blockchain.GetTdByHash(blockHash)
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}
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func (b *EthApiBackend) GetVMEnv(ctx context.Context, msg core.Message, state ethapi.State, header *types.Header) (*vm.Environment, func() error, error) {
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statedb := state.(EthApiState).state
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from := statedb.GetOrNewStateObject(msg.From())
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from.SetBalance(common.MaxBig)
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vmError := func() error { return nil }
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context := core.NewEVMContext(msg, header, b.eth.BlockChain())
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return vm.NewEnvironment(context, statedb, b.eth.chainConfig, vm.Config{}), vmError, nil
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}
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func (b *EthApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {
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b.eth.txMu.Lock()
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defer b.eth.txMu.Unlock()
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b.eth.txPool.SetLocal(signedTx)
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return b.eth.txPool.Add(signedTx)
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}
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func (b *EthApiBackend) RemoveTx(txHash common.Hash) {
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b.eth.txMu.Lock()
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defer b.eth.txMu.Unlock()
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b.eth.txPool.Remove(txHash)
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}
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func (b *EthApiBackend) GetPoolTransactions() (types.Transactions, error) {
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b.eth.txMu.Lock()
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defer b.eth.txMu.Unlock()
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pending, err := b.eth.txPool.Pending()
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if err != nil {
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return nil, err
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}
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var txs types.Transactions
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for _, batch := range pending {
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txs = append(txs, batch...)
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}
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return txs, nil
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}
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func (b *EthApiBackend) GetPoolTransaction(hash common.Hash) *types.Transaction {
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b.eth.txMu.Lock()
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defer b.eth.txMu.Unlock()
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return b.eth.txPool.Get(hash)
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}
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func (b *EthApiBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) {
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b.eth.txMu.Lock()
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defer b.eth.txMu.Unlock()
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return b.eth.txPool.State().GetNonce(addr), nil
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}
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func (b *EthApiBackend) Stats() (pending int, queued int) {
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b.eth.txMu.Lock()
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defer b.eth.txMu.Unlock()
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return b.eth.txPool.Stats()
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}
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func (b *EthApiBackend) TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) {
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b.eth.txMu.Lock()
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defer b.eth.txMu.Unlock()
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return b.eth.TxPool().Content()
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}
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func (b *EthApiBackend) Downloader() *downloader.Downloader {
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return b.eth.Downloader()
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}
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func (b *EthApiBackend) ProtocolVersion() int {
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return b.eth.EthVersion()
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}
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func (b *EthApiBackend) SuggestPrice(ctx context.Context) (*big.Int, error) {
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return b.gpo.SuggestPrice(), nil
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}
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func (b *EthApiBackend) ChainDb() ethdb.Database {
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return b.eth.ChainDb()
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}
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func (b *EthApiBackend) EventMux() *event.TypeMux {
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return b.eth.EventMux()
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}
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func (b *EthApiBackend) AccountManager() *accounts.Manager {
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return b.eth.AccountManager()
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}
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type EthApiState struct {
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state *state.StateDB
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}
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func (s EthApiState) GetBalance(ctx context.Context, addr common.Address) (*big.Int, error) {
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return s.state.GetBalance(addr), nil
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}
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func (s EthApiState) GetCode(ctx context.Context, addr common.Address) ([]byte, error) {
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return s.state.GetCode(addr), nil
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}
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func (s EthApiState) GetState(ctx context.Context, a common.Address, b common.Hash) (common.Hash, error) {
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return s.state.GetState(a, b), nil
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}
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func (s EthApiState) GetNonce(ctx context.Context, addr common.Address) (uint64, error) {
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return s.state.GetNonce(addr), nil
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}
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