67ac5f0ae7
Here, the core.Message interface turns into a plain struct and types.Message gets removed. This is a breaking change to packages core and core/types. While we do not promise API stability for package core, we do for core/types. An exception can be made for types.Message, since it doesn't have any purpose apart from invoking the state transition in package core. types.Message was also marked deprecated by the same commit it got added in, 4dca5d4db7 (November 2016). The core.Message interface was added in December 2014, in commit db494170dc, for the purpose of 'testing' state transitions. It's the same change that made transaction struct fields private. Before that, the state transition used *types.Transaction directly. Over time, multiple implementations of the interface accrued across different packages, since constructing a Message is required whenever one wants to invoke the state transition. These implementations all looked very similar, a struct with private fields exposing the fields as accessor methods. By changing Message into a struct with public fields we can remove all these useless interface implementations. It will also hopefully simplify future changes to the type with less updates to apply across all of go-ethereum when a field is added to Message. --------- Co-authored-by: Felix Lange <fjl@twurst.com>
336 lines
11 KiB
Go
336 lines
11 KiB
Go
// Copyright 2016 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 les
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import (
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"context"
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"errors"
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"math/big"
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"time"
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"github.com/ethereum/go-ethereum"
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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/consensus"
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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/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/gasprice"
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"github.com/ethereum/go-ethereum/eth/tracers"
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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/light"
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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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type LesApiBackend struct {
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extRPCEnabled bool
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allowUnprotectedTxs bool
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eth *LightEthereum
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gpo *gasprice.Oracle
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}
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func (b *LesApiBackend) ChainConfig() *params.ChainConfig {
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return b.eth.chainConfig
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}
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func (b *LesApiBackend) CurrentBlock() *types.Header {
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return b.eth.BlockChain().CurrentHeader()
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}
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func (b *LesApiBackend) SetHead(number uint64) {
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b.eth.handler.downloader.Cancel()
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b.eth.blockchain.SetHead(number)
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}
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func (b *LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
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// Return the latest current as the pending one since there
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// is no pending notion in the light client. TODO(rjl493456442)
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// unify the behavior of `HeaderByNumber` and `PendingBlockAndReceipts`.
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if number == rpc.PendingBlockNumber {
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return b.eth.blockchain.CurrentHeader(), nil
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}
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if number == rpc.LatestBlockNumber {
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return b.eth.blockchain.CurrentHeader(), nil
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}
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return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(number))
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}
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func (b *LesApiBackend) HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) {
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if blockNr, ok := blockNrOrHash.Number(); ok {
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return b.HeaderByNumber(ctx, blockNr)
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}
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if hash, ok := blockNrOrHash.Hash(); ok {
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header, err := b.HeaderByHash(ctx, hash)
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if err != nil {
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return nil, err
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}
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if header == nil {
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return nil, errors.New("header for hash not found")
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}
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if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
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return nil, errors.New("hash is not currently canonical")
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}
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return header, nil
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}
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return nil, errors.New("invalid arguments; neither block nor hash specified")
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}
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func (b *LesApiBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
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return b.eth.blockchain.GetHeaderByHash(hash), nil
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}
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func (b *LesApiBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
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header, err := b.HeaderByNumber(ctx, number)
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if header == nil || err != nil {
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return nil, err
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}
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return b.BlockByHash(ctx, header.Hash())
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}
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func (b *LesApiBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
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return b.eth.blockchain.GetBlockByHash(ctx, hash)
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}
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func (b *LesApiBackend) BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) {
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if blockNr, ok := blockNrOrHash.Number(); ok {
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return b.BlockByNumber(ctx, blockNr)
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}
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if hash, ok := blockNrOrHash.Hash(); ok {
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block, err := b.BlockByHash(ctx, hash)
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if err != nil {
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return nil, err
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}
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if block == nil {
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return nil, errors.New("header found, but block body is missing")
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}
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if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(block.NumberU64()) != hash {
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return nil, errors.New("hash is not currently canonical")
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}
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return block, nil
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}
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return nil, errors.New("invalid arguments; neither block nor hash specified")
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}
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func (b *LesApiBackend) GetBody(ctx context.Context, hash common.Hash, number rpc.BlockNumber) (*types.Body, error) {
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return light.GetBody(ctx, b.eth.odr, hash, uint64(number))
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}
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func (b *LesApiBackend) PendingBlockAndReceipts() (*types.Block, types.Receipts) {
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return nil, nil
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}
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func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
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header, err := b.HeaderByNumber(ctx, number)
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if err != nil {
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return nil, nil, err
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}
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if header == nil {
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return nil, nil, errors.New("header not found")
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}
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return light.NewState(ctx, header, b.eth.odr), header, nil
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}
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func (b *LesApiBackend) StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) {
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if blockNr, ok := blockNrOrHash.Number(); ok {
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return b.StateAndHeaderByNumber(ctx, blockNr)
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}
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if hash, ok := blockNrOrHash.Hash(); ok {
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header := b.eth.blockchain.GetHeaderByHash(hash)
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if header == nil {
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return nil, nil, errors.New("header for hash not found")
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}
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if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
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return nil, nil, errors.New("hash is not currently canonical")
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}
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return light.NewState(ctx, header, b.eth.odr), header, nil
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}
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return nil, nil, errors.New("invalid arguments; neither block nor hash specified")
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}
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func (b *LesApiBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
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if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil {
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return light.GetBlockReceipts(ctx, b.eth.odr, hash, *number)
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}
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return nil, nil
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}
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func (b *LesApiBackend) GetLogs(ctx context.Context, hash common.Hash, number uint64) ([][]*types.Log, error) {
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return light.GetBlockLogs(ctx, b.eth.odr, hash, number)
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}
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func (b *LesApiBackend) GetTd(ctx context.Context, hash common.Hash) *big.Int {
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if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil {
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return b.eth.blockchain.GetTdOdr(ctx, hash, *number)
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}
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return nil
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}
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func (b *LesApiBackend) GetEVM(ctx context.Context, msg *core.Message, state *state.StateDB, header *types.Header, vmConfig *vm.Config) (*vm.EVM, func() error, error) {
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if vmConfig == nil {
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vmConfig = new(vm.Config)
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}
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txContext := core.NewEVMTxContext(msg)
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context := core.NewEVMBlockContext(header, b.eth.blockchain, nil)
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return vm.NewEVM(context, txContext, state, b.eth.chainConfig, *vmConfig), state.Error, nil
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}
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func (b *LesApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {
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return b.eth.txPool.Add(ctx, signedTx)
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}
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func (b *LesApiBackend) RemoveTx(txHash common.Hash) {
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b.eth.txPool.RemoveTx(txHash)
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}
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func (b *LesApiBackend) GetPoolTransactions() (types.Transactions, error) {
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return b.eth.txPool.GetTransactions()
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}
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func (b *LesApiBackend) GetPoolTransaction(txHash common.Hash) *types.Transaction {
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return b.eth.txPool.GetTransaction(txHash)
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}
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func (b *LesApiBackend) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) {
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return light.GetTransaction(ctx, b.eth.odr, txHash)
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}
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func (b *LesApiBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) {
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return b.eth.txPool.GetNonce(ctx, addr)
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}
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func (b *LesApiBackend) Stats() (pending int, queued int) {
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return b.eth.txPool.Stats(), 0
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}
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func (b *LesApiBackend) 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 *LesApiBackend) TxPoolContentFrom(addr common.Address) (types.Transactions, types.Transactions) {
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return b.eth.txPool.ContentFrom(addr)
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}
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func (b *LesApiBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription {
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return b.eth.txPool.SubscribeNewTxsEvent(ch)
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}
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func (b *LesApiBackend) 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 *LesApiBackend) 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 *LesApiBackend) 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 *LesApiBackend) 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 *LesApiBackend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription {
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return event.NewSubscription(func(quit <-chan struct{}) error {
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<-quit
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return nil
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})
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}
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func (b *LesApiBackend) 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 *LesApiBackend) SyncProgress() ethereum.SyncProgress {
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return b.eth.Downloader().Progress()
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}
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func (b *LesApiBackend) ProtocolVersion() int {
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return b.eth.LesVersion() + 10000
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}
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func (b *LesApiBackend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
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return b.gpo.SuggestTipCap(ctx)
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}
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func (b *LesApiBackend) FeeHistory(ctx context.Context, blockCount int, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (firstBlock *big.Int, reward [][]*big.Int, baseFee []*big.Int, gasUsedRatio []float64, err error) {
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return b.gpo.FeeHistory(ctx, blockCount, lastBlock, rewardPercentiles)
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}
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func (b *LesApiBackend) ChainDb() ethdb.Database {
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return b.eth.chainDb
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}
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func (b *LesApiBackend) AccountManager() *accounts.Manager {
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return b.eth.accountManager
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}
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func (b *LesApiBackend) ExtRPCEnabled() bool {
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return b.extRPCEnabled
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}
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func (b *LesApiBackend) UnprotectedAllowed() bool {
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return b.allowUnprotectedTxs
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}
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func (b *LesApiBackend) RPCGasCap() uint64 {
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return b.eth.config.RPCGasCap
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}
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func (b *LesApiBackend) RPCEVMTimeout() time.Duration {
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return b.eth.config.RPCEVMTimeout
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}
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func (b *LesApiBackend) RPCTxFeeCap() float64 {
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return b.eth.config.RPCTxFeeCap
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}
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func (b *LesApiBackend) BloomStatus() (uint64, uint64) {
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if b.eth.bloomIndexer == nil {
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return 0, 0
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}
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sections, _, _ := b.eth.bloomIndexer.Sections()
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return params.BloomBitsBlocksClient, sections
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}
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func (b *LesApiBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) {
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for i := 0; i < bloomFilterThreads; i++ {
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go session.Multiplex(bloomRetrievalBatch, bloomRetrievalWait, b.eth.bloomRequests)
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}
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}
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func (b *LesApiBackend) Engine() consensus.Engine {
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return b.eth.engine
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}
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func (b *LesApiBackend) CurrentHeader() *types.Header {
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return b.eth.blockchain.CurrentHeader()
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}
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func (b *LesApiBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, readOnly bool, preferDisk bool) (*state.StateDB, tracers.StateReleaseFunc, error) {
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return b.eth.stateAtBlock(ctx, block, reexec)
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}
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func (b *LesApiBackend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (*core.Message, vm.BlockContext, *state.StateDB, tracers.StateReleaseFunc, error) {
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return b.eth.stateAtTransaction(ctx, block, txIndex, reexec)
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}
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