6d2aeb43d5
The state availability is checked during the creation of a state reader.
- In hash-based database, if the specified root node does not exist on disk disk, then
the state reader won't be created and an error will be returned.
- In path-based database, if the specified state layer is not available, then the
state reader won't be created and an error will be returned.
This change also contains a stricter semantics regarding the `Commit` operation: once it has been performed, the trie is no longer usable, and certain operations will return an error.
433 lines
14 KiB
Go
433 lines
14 KiB
Go
// Copyright 2023 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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"errors"
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"fmt"
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"time"
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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/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/internal/ethapi"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/ethereum/go-ethereum/trie"
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)
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// DebugAPI is the collection of Ethereum full node APIs for debugging the
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// protocol.
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type DebugAPI struct {
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eth *Ethereum
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}
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// NewDebugAPI creates a new DebugAPI instance.
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func NewDebugAPI(eth *Ethereum) *DebugAPI {
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return &DebugAPI{eth: eth}
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}
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// DumpBlock retrieves the entire state of the database at a given block.
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func (api *DebugAPI) DumpBlock(blockNr rpc.BlockNumber) (state.Dump, error) {
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opts := &state.DumpConfig{
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OnlyWithAddresses: true,
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Max: AccountRangeMaxResults, // Sanity limit over RPC
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}
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if blockNr == rpc.PendingBlockNumber {
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// If we're dumping the pending state, we need to request
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// both the pending block as well as the pending state from
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// the miner and operate on those
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_, stateDb := api.eth.miner.Pending()
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if stateDb == nil {
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return state.Dump{}, errors.New("pending state is not available")
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}
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return stateDb.RawDump(opts), nil
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}
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var header *types.Header
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if blockNr == rpc.LatestBlockNumber {
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header = api.eth.blockchain.CurrentBlock()
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} else if blockNr == rpc.FinalizedBlockNumber {
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header = api.eth.blockchain.CurrentFinalBlock()
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} else if blockNr == rpc.SafeBlockNumber {
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header = api.eth.blockchain.CurrentSafeBlock()
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} else {
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block := api.eth.blockchain.GetBlockByNumber(uint64(blockNr))
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if block == nil {
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return state.Dump{}, fmt.Errorf("block #%d not found", blockNr)
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}
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header = block.Header()
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}
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if header == nil {
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return state.Dump{}, fmt.Errorf("block #%d not found", blockNr)
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}
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stateDb, err := api.eth.BlockChain().StateAt(header.Root)
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if err != nil {
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return state.Dump{}, err
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}
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return stateDb.RawDump(opts), nil
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}
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// Preimage is a debug API function that returns the preimage for a sha3 hash, if known.
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func (api *DebugAPI) Preimage(ctx context.Context, hash common.Hash) (hexutil.Bytes, error) {
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if preimage := rawdb.ReadPreimage(api.eth.ChainDb(), hash); preimage != nil {
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return preimage, nil
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}
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return nil, errors.New("unknown preimage")
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}
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// BadBlockArgs represents the entries in the list returned when bad blocks are queried.
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type BadBlockArgs struct {
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Hash common.Hash `json:"hash"`
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Block map[string]interface{} `json:"block"`
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RLP string `json:"rlp"`
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}
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// GetBadBlocks returns a list of the last 'bad blocks' that the client has seen on the network
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// and returns them as a JSON list of block hashes.
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func (api *DebugAPI) GetBadBlocks(ctx context.Context) ([]*BadBlockArgs, error) {
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var (
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blocks = rawdb.ReadAllBadBlocks(api.eth.chainDb)
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results = make([]*BadBlockArgs, 0, len(blocks))
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)
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for _, block := range blocks {
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var (
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blockRlp string
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blockJSON map[string]interface{}
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)
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if rlpBytes, err := rlp.EncodeToBytes(block); err != nil {
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blockRlp = err.Error() // Hacky, but hey, it works
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} else {
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blockRlp = fmt.Sprintf("%#x", rlpBytes)
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}
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blockJSON = ethapi.RPCMarshalBlock(block, true, true, api.eth.APIBackend.ChainConfig())
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results = append(results, &BadBlockArgs{
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Hash: block.Hash(),
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RLP: blockRlp,
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Block: blockJSON,
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})
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}
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return results, nil
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}
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// AccountRangeMaxResults is the maximum number of results to be returned per call
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const AccountRangeMaxResults = 256
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// AccountRange enumerates all accounts in the given block and start point in paging request
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func (api *DebugAPI) AccountRange(blockNrOrHash rpc.BlockNumberOrHash, start hexutil.Bytes, maxResults int, nocode, nostorage, incompletes bool) (state.IteratorDump, error) {
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var stateDb *state.StateDB
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var err error
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if number, ok := blockNrOrHash.Number(); ok {
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if number == rpc.PendingBlockNumber {
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// If we're dumping the pending state, we need to request
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// both the pending block as well as the pending state from
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// the miner and operate on those
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_, stateDb = api.eth.miner.Pending()
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if stateDb == nil {
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return state.IteratorDump{}, errors.New("pending state is not available")
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}
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} else {
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var header *types.Header
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if number == rpc.LatestBlockNumber {
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header = api.eth.blockchain.CurrentBlock()
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} else if number == rpc.FinalizedBlockNumber {
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header = api.eth.blockchain.CurrentFinalBlock()
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} else if number == rpc.SafeBlockNumber {
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header = api.eth.blockchain.CurrentSafeBlock()
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} else {
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block := api.eth.blockchain.GetBlockByNumber(uint64(number))
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if block == nil {
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return state.IteratorDump{}, fmt.Errorf("block #%d not found", number)
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}
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header = block.Header()
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}
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if header == nil {
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return state.IteratorDump{}, fmt.Errorf("block #%d not found", number)
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}
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stateDb, err = api.eth.BlockChain().StateAt(header.Root)
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if err != nil {
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return state.IteratorDump{}, err
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}
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}
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} else if hash, ok := blockNrOrHash.Hash(); ok {
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block := api.eth.blockchain.GetBlockByHash(hash)
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if block == nil {
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return state.IteratorDump{}, fmt.Errorf("block %s not found", hash.Hex())
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}
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stateDb, err = api.eth.BlockChain().StateAt(block.Root())
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if err != nil {
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return state.IteratorDump{}, err
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}
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} else {
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return state.IteratorDump{}, errors.New("either block number or block hash must be specified")
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}
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opts := &state.DumpConfig{
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SkipCode: nocode,
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SkipStorage: nostorage,
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OnlyWithAddresses: !incompletes,
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Start: start,
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Max: uint64(maxResults),
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}
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if maxResults > AccountRangeMaxResults || maxResults <= 0 {
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opts.Max = AccountRangeMaxResults
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}
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return stateDb.IteratorDump(opts), nil
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}
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// StorageRangeResult is the result of a debug_storageRangeAt API call.
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type StorageRangeResult struct {
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Storage storageMap `json:"storage"`
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NextKey *common.Hash `json:"nextKey"` // nil if Storage includes the last key in the trie.
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}
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type storageMap map[common.Hash]storageEntry
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type storageEntry struct {
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Key *common.Hash `json:"key"`
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Value common.Hash `json:"value"`
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}
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// StorageRangeAt returns the storage at the given block height and transaction index.
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func (api *DebugAPI) StorageRangeAt(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash, txIndex int, contractAddress common.Address, keyStart hexutil.Bytes, maxResult int) (StorageRangeResult, error) {
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var block *types.Block
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block, err := api.eth.APIBackend.BlockByNumberOrHash(ctx, blockNrOrHash)
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if err != nil {
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return StorageRangeResult{}, err
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}
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if block == nil {
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return StorageRangeResult{}, fmt.Errorf("block %v not found", blockNrOrHash)
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}
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_, _, statedb, release, err := api.eth.stateAtTransaction(ctx, block, txIndex, 0)
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if err != nil {
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return StorageRangeResult{}, err
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}
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defer release()
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st, err := statedb.StorageTrie(contractAddress)
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if err != nil {
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return StorageRangeResult{}, err
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}
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if st == nil {
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return StorageRangeResult{}, fmt.Errorf("account %x doesn't exist", contractAddress)
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}
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return storageRangeAt(st, keyStart, maxResult)
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}
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func storageRangeAt(st state.Trie, start []byte, maxResult int) (StorageRangeResult, error) {
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trieIt, err := st.NodeIterator(start)
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if err != nil {
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return StorageRangeResult{}, err
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}
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it := trie.NewIterator(trieIt)
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result := StorageRangeResult{Storage: storageMap{}}
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for i := 0; i < maxResult && it.Next(); i++ {
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_, content, _, err := rlp.Split(it.Value)
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if err != nil {
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return StorageRangeResult{}, err
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}
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e := storageEntry{Value: common.BytesToHash(content)}
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if preimage := st.GetKey(it.Key); preimage != nil {
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preimage := common.BytesToHash(preimage)
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e.Key = &preimage
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}
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result.Storage[common.BytesToHash(it.Key)] = e
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}
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// Add the 'next key' so clients can continue downloading.
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if it.Next() {
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next := common.BytesToHash(it.Key)
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result.NextKey = &next
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}
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return result, nil
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}
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// GetModifiedAccountsByNumber returns all accounts that have changed between the
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// two blocks specified. A change is defined as a difference in nonce, balance,
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// code hash, or storage hash.
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//
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// With one parameter, returns the list of accounts modified in the specified block.
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func (api *DebugAPI) GetModifiedAccountsByNumber(startNum uint64, endNum *uint64) ([]common.Address, error) {
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var startBlock, endBlock *types.Block
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startBlock = api.eth.blockchain.GetBlockByNumber(startNum)
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if startBlock == nil {
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return nil, fmt.Errorf("start block %x not found", startNum)
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}
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if endNum == nil {
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endBlock = startBlock
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startBlock = api.eth.blockchain.GetBlockByHash(startBlock.ParentHash())
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if startBlock == nil {
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return nil, fmt.Errorf("block %x has no parent", endBlock.Number())
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}
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} else {
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endBlock = api.eth.blockchain.GetBlockByNumber(*endNum)
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if endBlock == nil {
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return nil, fmt.Errorf("end block %d not found", *endNum)
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}
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}
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return api.getModifiedAccounts(startBlock, endBlock)
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}
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// GetModifiedAccountsByHash returns all accounts that have changed between the
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// two blocks specified. A change is defined as a difference in nonce, balance,
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// code hash, or storage hash.
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//
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// With one parameter, returns the list of accounts modified in the specified block.
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func (api *DebugAPI) GetModifiedAccountsByHash(startHash common.Hash, endHash *common.Hash) ([]common.Address, error) {
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var startBlock, endBlock *types.Block
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startBlock = api.eth.blockchain.GetBlockByHash(startHash)
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if startBlock == nil {
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return nil, fmt.Errorf("start block %x not found", startHash)
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}
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if endHash == nil {
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endBlock = startBlock
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startBlock = api.eth.blockchain.GetBlockByHash(startBlock.ParentHash())
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if startBlock == nil {
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return nil, fmt.Errorf("block %x has no parent", endBlock.Number())
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}
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} else {
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endBlock = api.eth.blockchain.GetBlockByHash(*endHash)
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if endBlock == nil {
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return nil, fmt.Errorf("end block %x not found", *endHash)
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}
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}
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return api.getModifiedAccounts(startBlock, endBlock)
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}
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func (api *DebugAPI) getModifiedAccounts(startBlock, endBlock *types.Block) ([]common.Address, error) {
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if startBlock.Number().Uint64() >= endBlock.Number().Uint64() {
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return nil, fmt.Errorf("start block height (%d) must be less than end block height (%d)", startBlock.Number().Uint64(), endBlock.Number().Uint64())
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}
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triedb := api.eth.BlockChain().StateCache().TrieDB()
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oldTrie, err := trie.NewStateTrie(trie.StateTrieID(startBlock.Root()), triedb)
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if err != nil {
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return nil, err
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}
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newTrie, err := trie.NewStateTrie(trie.StateTrieID(endBlock.Root()), triedb)
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if err != nil {
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return nil, err
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}
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oldIt, err := oldTrie.NodeIterator([]byte{})
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if err != nil {
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return nil, err
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}
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newIt, err := newTrie.NodeIterator([]byte{})
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if err != nil {
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return nil, err
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}
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diff, _ := trie.NewDifferenceIterator(oldIt, newIt)
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iter := trie.NewIterator(diff)
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var dirty []common.Address
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for iter.Next() {
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key := newTrie.GetKey(iter.Key)
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if key == nil {
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return nil, fmt.Errorf("no preimage found for hash %x", iter.Key)
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}
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dirty = append(dirty, common.BytesToAddress(key))
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}
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return dirty, nil
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}
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// GetAccessibleState returns the first number where the node has accessible
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// state on disk. Note this being the post-state of that block and the pre-state
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// of the next block.
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// The (from, to) parameters are the sequence of blocks to search, which can go
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// either forwards or backwards
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func (api *DebugAPI) GetAccessibleState(from, to rpc.BlockNumber) (uint64, error) {
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db := api.eth.ChainDb()
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var pivot uint64
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if p := rawdb.ReadLastPivotNumber(db); p != nil {
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pivot = *p
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log.Info("Found fast-sync pivot marker", "number", pivot)
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}
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var resolveNum = func(num rpc.BlockNumber) (uint64, error) {
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// We don't have state for pending (-2), so treat it as latest
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if num.Int64() < 0 {
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block := api.eth.blockchain.CurrentBlock()
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if block == nil {
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return 0, errors.New("current block missing")
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}
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return block.Number.Uint64(), nil
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}
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return uint64(num.Int64()), nil
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}
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var (
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start uint64
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end uint64
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delta = int64(1)
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lastLog time.Time
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err error
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)
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if start, err = resolveNum(from); err != nil {
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return 0, err
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}
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if end, err = resolveNum(to); err != nil {
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return 0, err
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}
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if start == end {
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return 0, errors.New("from and to needs to be different")
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}
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if start > end {
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delta = -1
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}
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for i := int64(start); i != int64(end); i += delta {
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if time.Since(lastLog) > 8*time.Second {
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log.Info("Finding roots", "from", start, "to", end, "at", i)
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lastLog = time.Now()
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}
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if i < int64(pivot) {
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continue
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}
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h := api.eth.BlockChain().GetHeaderByNumber(uint64(i))
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if h == nil {
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return 0, fmt.Errorf("missing header %d", i)
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}
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if ok, _ := api.eth.ChainDb().Has(h.Root[:]); ok {
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return uint64(i), nil
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}
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}
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return 0, errors.New("no state found")
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}
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// SetTrieFlushInterval configures how often in-memory tries are persisted
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// to disk. The value is in terms of block processing time, not wall clock.
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// If the value is shorter than the block generation time, or even 0 or negative,
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// the node will flush trie after processing each block (effectively archive mode).
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func (api *DebugAPI) SetTrieFlushInterval(interval string) error {
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t, err := time.ParseDuration(interval)
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if err != nil {
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return err
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}
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api.eth.blockchain.SetTrieFlushInterval(t)
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return nil
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}
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// GetTrieFlushInterval gets the current value of in-memory trie flush interval
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func (api *DebugAPI) GetTrieFlushInterval() string {
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return api.eth.blockchain.GetTrieFlushInterval().String()
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}
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