205 lines
6.7 KiB
Go
205 lines
6.7 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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"context"
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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/common/math"
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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/params"
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"github.com/ethereum/go-ethereum/rpc"
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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.Oracle
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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.protocolManager.downloader.Cancel()
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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) (*state.StateDB, *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 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 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) GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header, vmCfg vm.Config) (*vm.EVM, func() error, error) {
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state.SetBalance(msg.From(), math.MaxBig256)
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vmError := func() error { return nil }
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context := core.NewEVMContext(msg, header, b.eth.BlockChain(), nil)
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return vm.NewEVM(context, state, b.eth.chainConfig, vmCfg), vmError, nil
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}
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func (b *EthApiBackend) SubscribeRemovedTxEvent(ch chan<- core.RemovedTransactionEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeRemovedTxEvent(ch)
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}
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func (b *EthApiBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeRemovedLogsEvent(ch)
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}
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func (b *EthApiBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeChainEvent(ch)
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}
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func (b *EthApiBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeChainHeadEvent(ch)
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}
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func (b *EthApiBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeChainSideEvent(ch)
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}
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func (b *EthApiBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
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return b.eth.BlockChain().SubscribeLogsEvent(ch)
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}
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func (b *EthApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {
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return b.eth.txPool.AddLocal(signedTx)
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}
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func (b *EthApiBackend) RemoveTx(txHash common.Hash) {
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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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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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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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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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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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return b.eth.TxPool().Content()
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}
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func (b *EthApiBackend) SubscribeTxPreEvent(ch chan<- core.TxPreEvent) event.Subscription {
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return b.eth.TxPool().SubscribeTxPreEvent(ch)
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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(ctx)
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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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