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core: move tx indexer to its own file (#28857)

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This change moves all the transaction indexing functions to a separate txindexer.go file and defines a txIndexer structure as a refactoring.
This commit is contained in:
rjl493456442 2024-01-24 04:00:50 +08:00 committed by GitHub
parent 542c861b4f
commit 6b0de79935
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
6 changed files with 477 additions and 498 deletions
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178
core/blockchain.go
View File

@ -192,17 +192,6 @@ type txLookup struct {
transaction *types.Transaction
}
// TxIndexProgress is the struct describing the progress for transaction indexing.
type TxIndexProgress struct {
Indexed uint64 // number of blocks whose transactions are indexed
Remaining uint64 // number of blocks whose transactions are not indexed yet
}
// Done returns an indicator if the transaction indexing is finished.
func (prog TxIndexProgress) Done() bool {
return prog.Remaining == 0
}
// BlockChain represents the canonical chain given a database with a genesis
// block. The Blockchain manages chain imports, reverts, chain reorganisations.
//
@ -229,13 +218,7 @@ type BlockChain struct {
flushInterval atomic.Int64 // Time interval (processing time) after which to flush a state
triedb *trie.Database // The database handler for maintaining trie nodes.
stateCache state.Database // State database to reuse between imports (contains state cache)
// txLookupLimit is the maximum number of blocks from head whose tx indices
// are reserved:
// * 0: means no limit and regenerate any missing indexes
// * N: means N block limit [HEAD-N+1, HEAD] and delete extra indexes
// * nil: disable tx reindexer/deleter, but still index new blocks
txLookupLimit uint64
txIndexer *txIndexer // Transaction indexer, might be nil if not enabled
hc *HeaderChain
rmLogsFeed event.Feed
@ -270,9 +253,6 @@ type BlockChain struct {
stopping atomic.Bool // false if chain is running, true when stopped
procInterrupt atomic.Bool // interrupt signaler for block processing
txIndexRunning bool // flag if the background tx indexer is activated
txIndexProgCh chan chan TxIndexProgress // chan for querying the progress of transaction indexing
engine consensus.Engine
validator Validator // Block and state validator interface
prefetcher Prefetcher
@ -320,7 +300,6 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
blockCache: lru.NewCache[common.Hash, *types.Block](blockCacheLimit),
txLookupCache: lru.NewCache[common.Hash, txLookup](txLookupCacheLimit),
futureBlocks: lru.NewCache[common.Hash, *types.Block](maxFutureBlocks),
txIndexProgCh: make(chan chan TxIndexProgress),
engine: engine,
vmConfig: vmConfig,
}
@ -485,13 +464,9 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
}
rawdb.WriteChainConfig(db, genesisHash, chainConfig)
}
// Start tx indexer/unindexer if required.
// Start tx indexer if it's enabled.
if txLookupLimit != nil {
bc.txLookupLimit = *txLookupLimit
bc.txIndexRunning = true
bc.wg.Add(1)
go bc.maintainTxIndex()
bc.txIndexer = newTxIndexer(*txLookupLimit, bc)
}
return bc, nil
}
@ -981,7 +956,10 @@ func (bc *BlockChain) stopWithoutSaving() {
if !bc.stopping.CompareAndSwap(false, true) {
return
}
// Signal shutdown tx indexer.
if bc.txIndexer != nil {
bc.txIndexer.close()
}
// Unsubscribe all subscriptions registered from blockchain.
bc.scope.Close()
@ -2403,148 +2381,6 @@ func (bc *BlockChain) skipBlock(err error, it *insertIterator) bool {
return false
}
// indexBlocks reindexes or unindexes transactions depending on user configuration
func (bc *BlockChain) indexBlocks(tail *uint64, head uint64, done chan struct{}) {
defer func() { close(done) }()
// If head is 0, it means the chain is just initialized and no blocks are
// inserted, so don't need to index anything.
if head == 0 {
return
}
// The tail flag is not existent, it means the node is just initialized
// and all blocks in the chain (part of them may from ancient store) are
// not indexed yet, index the chain according to the configuration then.
if tail == nil {
from := uint64(0)
if bc.txLookupLimit != 0 && head >= bc.txLookupLimit {
from = head - bc.txLookupLimit + 1
}
rawdb.IndexTransactions(bc.db, from, head+1, bc.quit, true)
return
}
// The tail flag is existent (which means indexes in [tail, head] should be
// present), while the whole chain are requested for indexing.
if bc.txLookupLimit == 0 || head < bc.txLookupLimit {
if *tail > 0 {
// It can happen when chain is rewound to a historical point which
// is even lower than the indexes tail, recap the indexing target
// to new head to avoid reading non-existent block bodies.
end := *tail
if end > head+1 {
end = head + 1
}
rawdb.IndexTransactions(bc.db, 0, end, bc.quit, true)
}
return
}
// The tail flag is existent, adjust the index range according to configuration
// and latest head.
if head-bc.txLookupLimit+1 < *tail {
// Reindex a part of missing indices and rewind index tail to HEAD-limit
rawdb.IndexTransactions(bc.db, head-bc.txLookupLimit+1, *tail, bc.quit, true)
} else {
// Unindex a part of stale indices and forward index tail to HEAD-limit
rawdb.UnindexTransactions(bc.db, *tail, head-bc.txLookupLimit+1, bc.quit, false)
}
}
// reportTxIndexProgress returns the tx indexing progress.
func (bc *BlockChain) reportTxIndexProgress(head uint64) TxIndexProgress {
var (
remaining uint64
tail = rawdb.ReadTxIndexTail(bc.db)
)
total := bc.txLookupLimit
if bc.txLookupLimit == 0 {
total = head + 1 // genesis included
}
var indexed uint64
if tail != nil {
indexed = head - *tail + 1
}
// The value of indexed might be larger than total if some blocks need
// to be unindexed, avoiding a negative remaining.
if indexed < total {
remaining = total - indexed
}
return TxIndexProgress{
Indexed: indexed,
Remaining: remaining,
}
}
// TxIndexProgress retrieves the tx indexing progress, or an error if the
// background tx indexer is not activated or already stopped.
func (bc *BlockChain) TxIndexProgress() (TxIndexProgress, error) {
if !bc.txIndexRunning {
return TxIndexProgress{}, errors.New("tx indexer is not activated")
}
ch := make(chan TxIndexProgress, 1)
select {
case bc.txIndexProgCh <- ch:
return <-ch, nil
case <-bc.quit:
return TxIndexProgress{}, errors.New("blockchain is closed")
}
}
// maintainTxIndex is responsible for the construction and deletion of the
// transaction index.
//
// User can use flag `txlookuplimit` to specify a "recentness" block, below
// which ancient tx indices get deleted. If `txlookuplimit` is 0, it means
// all tx indices will be reserved.
//
// The user can adjust the txlookuplimit value for each launch after sync,
// Geth will automatically construct the missing indices or delete the extra
// indices.
func (bc *BlockChain) maintainTxIndex() {
defer bc.wg.Done()
// Listening to chain events and manipulate the transaction indexes.
var (
done chan struct{} // Non-nil if background unindexing or reindexing routine is active.
lastHead uint64 // The latest announced chain head (whose tx indexes are assumed created)
headCh = make(chan ChainHeadEvent, 1) // Buffered to avoid locking up the event feed
)
sub := bc.SubscribeChainHeadEvent(headCh)
if sub == nil {
return
}
defer sub.Unsubscribe()
log.Info("Initialized transaction indexer", "limit", bc.TxLookupLimit())
// Launch the initial processing if chain is not empty (head != genesis).
// This step is useful in these scenarios that chain has no progress and
// indexer is never triggered.
if head := rawdb.ReadHeadBlock(bc.db); head != nil && head.Number().Uint64() != 0 {
done = make(chan struct{})
lastHead = head.Number().Uint64()
go bc.indexBlocks(rawdb.ReadTxIndexTail(bc.db), head.NumberU64(), done)
}
for {
select {
case head := <-headCh:
if done == nil {
done = make(chan struct{})
go bc.indexBlocks(rawdb.ReadTxIndexTail(bc.db), head.Block.NumberU64(), done)
}
lastHead = head.Block.NumberU64()
case <-done:
done = nil
case ch := <-bc.txIndexProgCh:
ch <- bc.reportTxIndexProgress(lastHead)
case <-bc.quit:
if done != nil {
log.Info("Waiting background transaction indexer to exit")
<-done
}
return
}
}
}
// reportBlock logs a bad block error.
func (bc *BlockChain) reportBlock(block *types.Block, receipts types.Receipts, err error) {
rawdb.WriteBadBlock(bc.db, block)

16
core/blockchain_reader.go
View File

@ -397,16 +397,12 @@ func (bc *BlockChain) GetVMConfig() *vm.Config {
return &bc.vmConfig
}
// SetTxLookupLimit is responsible for updating the txlookup limit to the
// original one stored in db if the new mismatches with the old one.
func (bc *BlockChain) SetTxLookupLimit(limit uint64) {
bc.txLookupLimit = limit
}
// TxLookupLimit retrieves the txlookup limit used by blockchain to prune
// stale transaction indices.
func (bc *BlockChain) TxLookupLimit() uint64 {
return bc.txLookupLimit
// TxIndexProgress returns the transaction indexing progress.
func (bc *BlockChain) TxIndexProgress() (TxIndexProgress, error) {
if bc.txIndexer == nil {
return TxIndexProgress{}, errors.New("tx indexer is not enabled")
}
return bc.txIndexer.txIndexProgress()
}
// TrieDB retrieves the low level trie database used for data storage.

316
core/blockchain_test.go
View File

@ -2723,106 +2723,6 @@ func testReorgToShorterRemovesCanonMappingHeaderChain(t *testing.T, scheme strin
}
}
func TestTransactionIndices(t *testing.T) {
// Configure and generate a sample block chain
var (
key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
address = crypto.PubkeyToAddress(key.PublicKey)
funds = big.NewInt(100000000000000000)
gspec = &Genesis{
Config: params.TestChainConfig,
Alloc: GenesisAlloc{address: {Balance: funds}},
BaseFee: big.NewInt(params.InitialBaseFee),
}
signer = types.LatestSigner(gspec.Config)
)
_, blocks, receipts := GenerateChainWithGenesis(gspec, ethash.NewFaker(), 128, func(i int, block *BlockGen) {
tx, err := types.SignTx(types.NewTransaction(block.TxNonce(address), common.Address{0x00}, big.NewInt(1000), params.TxGas, block.header.BaseFee, nil), signer, key)
if err != nil {
panic(err)
}
block.AddTx(tx)
})
check := func(tail *uint64, chain *BlockChain) {
stored := rawdb.ReadTxIndexTail(chain.db)
if tail == nil && stored != nil {
t.Fatalf("Oldest indexded block mismatch, want nil, have %d", *stored)
}
if tail != nil && *stored != *tail {
t.Fatalf("Oldest indexded block mismatch, want %d, have %d", *tail, *stored)
}
if tail != nil {
for i := *tail; i <= chain.CurrentBlock().Number.Uint64(); i++ {
block := rawdb.ReadBlock(chain.db, rawdb.ReadCanonicalHash(chain.db, i), i)
if block.Transactions().Len() == 0 {
continue
}
for _, tx := range block.Transactions() {
if index := rawdb.ReadTxLookupEntry(chain.db, tx.Hash()); index == nil {
t.Fatalf("Miss transaction indice, number %d hash %s", i, tx.Hash().Hex())
}
}
}
for i := uint64(0); i < *tail; i++ {
block := rawdb.ReadBlock(chain.db, rawdb.ReadCanonicalHash(chain.db, i), i)
if block.Transactions().Len() == 0 {
continue
}
for _, tx := range block.Transactions() {
if index := rawdb.ReadTxLookupEntry(chain.db, tx.Hash()); index != nil {
t.Fatalf("Transaction indice should be deleted, number %d hash %s", i, tx.Hash().Hex())
}
}
}
}
}
// Init block chain with external ancients, check all needed indices has been indexed.
limit := []uint64{0, 32, 64, 128}
for _, l := range limit {
frdir := t.TempDir()
ancientDb, _ := rawdb.NewDatabaseWithFreezer(rawdb.NewMemoryDatabase(), frdir, "", false)
rawdb.WriteAncientBlocks(ancientDb, append([]*types.Block{gspec.ToBlock()}, blocks...), append([]types.Receipts{{}}, receipts...), big.NewInt(0))
l := l
chain, err := NewBlockChain(ancientDb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, &l)
if err != nil {
t.Fatalf("failed to create tester chain: %v", err)
}
chain.indexBlocks(rawdb.ReadTxIndexTail(ancientDb), 128, make(chan struct{}))
var tail uint64
if l != 0 {
tail = uint64(128) - l + 1
}
check(&tail, chain)
chain.Stop()
ancientDb.Close()
os.RemoveAll(frdir)
}
// Reconstruct a block chain which only reserves HEAD-64 tx indices
ancientDb, _ := rawdb.NewDatabaseWithFreezer(rawdb.NewMemoryDatabase(), t.TempDir(), "", false)
defer ancientDb.Close()
rawdb.WriteAncientBlocks(ancientDb, append([]*types.Block{gspec.ToBlock()}, blocks...), append([]types.Receipts{{}}, receipts...), big.NewInt(0))
limit = []uint64{0, 64 /* drop stale */, 32 /* shorten history */, 64 /* extend history */, 0 /* restore all */}
for _, l := range limit {
l := l
chain, err := NewBlockChain(ancientDb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, &l)
if err != nil {
t.Fatalf("failed to create tester chain: %v", err)
}
var tail uint64
if l != 0 {
tail = uint64(128) - l + 1
}
chain.indexBlocks(rawdb.ReadTxIndexTail(ancientDb), 128, make(chan struct{}))
check(&tail, chain)
chain.Stop()
}
}
// Benchmarks large blocks with value transfers to non-existing accounts
func benchmarkLargeNumberOfValueToNonexisting(b *testing.B, numTxs, numBlocks int, recipientFn func(uint64) common.Address, dataFn func(uint64) []byte) {
var (
@ -4019,222 +3919,6 @@ func testCanonicalHashMarker(t *testing.T, scheme string) {
}
}
// TestTxIndexer tests the tx indexes are updated correctly.
func TestTxIndexer(t *testing.T) {
var (
testBankKey, _ = crypto.GenerateKey()
testBankAddress = crypto.PubkeyToAddress(testBankKey.PublicKey)
testBankFunds = big.NewInt(1000000000000000000)
gspec = &Genesis{
Config: params.TestChainConfig,
Alloc: GenesisAlloc{testBankAddress: {Balance: testBankFunds}},
BaseFee: big.NewInt(params.InitialBaseFee),
}
engine = ethash.NewFaker()
nonce = uint64(0)
)
_, blocks, receipts := GenerateChainWithGenesis(gspec, engine, 128, func(i int, gen *BlockGen) {
tx, _ := types.SignTx(types.NewTransaction(nonce, common.HexToAddress("0xdeadbeef"), big.NewInt(1000), params.TxGas, big.NewInt(10*params.InitialBaseFee), nil), types.HomesteadSigner{}, testBankKey)
gen.AddTx(tx)
nonce += 1
})
// verifyIndexes checks if the transaction indexes are present or not
// of the specified block.
verifyIndexes := func(db ethdb.Database, number uint64, exist bool) {
if number == 0 {
return
}
block := blocks[number-1]
for _, tx := range block.Transactions() {
lookup := rawdb.ReadTxLookupEntry(db, tx.Hash())
if exist && lookup == nil {
t.Fatalf("missing %d %x", number, tx.Hash().Hex())
}
if !exist && lookup != nil {
t.Fatalf("unexpected %d %x", number, tx.Hash().Hex())
}
}
}
// verifyRange runs verifyIndexes for a range of blocks, from and to are included.
verifyRange := func(db ethdb.Database, from, to uint64, exist bool) {
for number := from; number <= to; number += 1 {
verifyIndexes(db, number, exist)
}
}
verify := func(db ethdb.Database, expTail uint64) {
tail := rawdb.ReadTxIndexTail(db)
if tail == nil {
t.Fatal("Failed to write tx index tail")
}
if *tail != expTail {
t.Fatalf("Unexpected tx index tail, want %v, got %d", expTail, *tail)
}
if *tail != 0 {
verifyRange(db, 0, *tail-1, false)
}
verifyRange(db, *tail, 128, true)
}
verifyProgress := func(chain *BlockChain) {
prog := chain.reportTxIndexProgress(128)
if !prog.Done() {
t.Fatalf("Expect fully indexed")
}
}
var cases = []struct {
limitA uint64
tailA uint64
limitB uint64
tailB uint64
limitC uint64
tailC uint64
}{
{
// LimitA: 0
// TailA: 0
//
// all blocks are indexed
limitA: 0,
tailA: 0,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
{
// LimitA: 64
// TailA: 65
//
// block [65, 128] are indexed
limitA: 64,
tailA: 65,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
{
// LimitA: 127
// TailA: 2
//
// block [2, 128] are indexed
limitA: 127,
tailA: 2,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
{
// LimitA: 128
// TailA: 1
//
// block [2, 128] are indexed
limitA: 128,
tailA: 1,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
{
// LimitA: 129
// TailA: 0
//
// block [0, 128] are indexed
limitA: 129,
tailA: 0,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
}
for _, c := range cases {
frdir := t.TempDir()
db, _ := rawdb.NewDatabaseWithFreezer(rawdb.NewMemoryDatabase(), frdir, "", false)
rawdb.WriteAncientBlocks(db, append([]*types.Block{gspec.ToBlock()}, blocks...), append([]types.Receipts{{}}, receipts...), big.NewInt(0))
// Index the initial blocks from ancient store
chain, _ := NewBlockChain(db, nil, gspec, nil, engine, vm.Config{}, nil, &c.limitA)
chain.indexBlocks(nil, 128, make(chan struct{}))
verify(db, c.tailA)
verifyProgress(chain)
chain.SetTxLookupLimit(c.limitB)
chain.indexBlocks(rawdb.ReadTxIndexTail(db), 128, make(chan struct{}))
verify(db, c.tailB)
verifyProgress(chain)
chain.SetTxLookupLimit(c.limitC)
chain.indexBlocks(rawdb.ReadTxIndexTail(db), 128, make(chan struct{}))
verify(db, c.tailC)
verifyProgress(chain)
// Recover all indexes
chain.SetTxLookupLimit(0)
chain.indexBlocks(rawdb.ReadTxIndexTail(db), 128, make(chan struct{}))
verify(db, 0)
verifyProgress(chain)
chain.Stop()
db.Close()
os.RemoveAll(frdir)
}
}
func TestCreateThenDeletePreByzantium(t *testing.T) {
// We use Ropsten chain config instead of Testchain config, this is
// deliberate: we want to use pre-byz rules where we have intermediate state roots

220
core/txindexer.go Normal file
View File

@ -0,0 +1,220 @@
// Copyright 2024 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>
package core
import (
"errors"
"fmt"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/log"
)
// TxIndexProgress is the struct describing the progress for transaction indexing.
type TxIndexProgress struct {
Indexed uint64 // number of blocks whose transactions are indexed
Remaining uint64 // number of blocks whose transactions are not indexed yet
}
// Done returns an indicator if the transaction indexing is finished.
func (progress TxIndexProgress) Done() bool {
return progress.Remaining == 0
}
// txIndexer is the module responsible for maintaining transaction indexes
// according to the configured indexing range by users.
type txIndexer struct {
// limit is the maximum number of blocks from head whose tx indexes
// are reserved:
// * 0: means the entire chain should be indexed
// * N: means the latest N blocks [HEAD-N+1, HEAD] should be indexed
// and all others shouldn't.
limit uint64
db ethdb.Database
progress chan chan TxIndexProgress
term chan chan struct{}
closed chan struct{}
}
// newTxIndexer initializes the transaction indexer.
func newTxIndexer(limit uint64, chain *BlockChain) *txIndexer {
indexer := &txIndexer{
limit: limit,
db: chain.db,
progress: make(chan chan TxIndexProgress),
term: make(chan chan struct{}),
closed: make(chan struct{}),
}
go indexer.loop(chain)
var msg string
if limit == 0 {
msg = "entire chain"
} else {
msg = fmt.Sprintf("last %d blocks", limit)
}
log.Info("Initialized transaction indexer", "range", msg)
return indexer
}
// run executes the scheduled indexing/unindexing task in a separate thread.
// If the stop channel is closed, the task should be terminated as soon as
// possible, the done channel will be closed once the task is finished.
func (indexer *txIndexer) run(tail *uint64, head uint64, stop chan struct{}, done chan struct{}) {
defer func() { close(done) }()
// Short circuit if chain is empty and nothing to index.
if head == 0 {
return
}
// The tail flag is not existent, it means the node is just initialized
// and all blocks in the chain (part of them may from ancient store) are
// not indexed yet, index the chain according to the configured limit.
if tail == nil {
from := uint64(0)
if indexer.limit != 0 && head >= indexer.limit {
from = head - indexer.limit + 1
}
rawdb.IndexTransactions(indexer.db, from, head+1, stop, true)
return
}
// The tail flag is existent (which means indexes in [tail, head] should be
// present), while the whole chain are requested for indexing.
if indexer.limit == 0 || head < indexer.limit {
if *tail > 0 {
// It can happen when chain is rewound to a historical point which
// is even lower than the indexes tail, recap the indexing target
// to new head to avoid reading non-existent block bodies.
end := *tail
if end > head+1 {
end = head + 1
}
rawdb.IndexTransactions(indexer.db, 0, end, stop, true)
}
return
}
// The tail flag is existent, adjust the index range according to configured
// limit and the latest chain head.
if head-indexer.limit+1 < *tail {
// Reindex a part of missing indices and rewind index tail to HEAD-limit
rawdb.IndexTransactions(indexer.db, head-indexer.limit+1, *tail, stop, true)
} else {
// Unindex a part of stale indices and forward index tail to HEAD-limit
rawdb.UnindexTransactions(indexer.db, *tail, head-indexer.limit+1, stop, false)
}
}
// loop is the scheduler of the indexer, assigning indexing/unindexing tasks depending
// on the received chain event.
func (indexer *txIndexer) loop(chain *BlockChain) {
defer close(indexer.closed)
// Listening to chain events and manipulate the transaction indexes.
var (
stop chan struct{} // Non-nil if background routine is active.
done chan struct{} // Non-nil if background routine is active.
lastHead uint64 // The latest announced chain head (whose tx indexes are assumed created)
headCh = make(chan ChainHeadEvent)
sub = chain.SubscribeChainHeadEvent(headCh)
)
defer sub.Unsubscribe()
// Launch the initial processing if chain is not empty (head != genesis).
// This step is useful in these scenarios that chain has no progress.
if head := rawdb.ReadHeadBlock(indexer.db); head != nil && head.Number().Uint64() != 0 {
stop = make(chan struct{})
done = make(chan struct{})
lastHead = head.Number().Uint64()
go indexer.run(rawdb.ReadTxIndexTail(indexer.db), head.NumberU64(), stop, done)
}
for {
select {
case head := <-headCh:
if done == nil {
stop = make(chan struct{})
done = make(chan struct{})
go indexer.run(rawdb.ReadTxIndexTail(indexer.db), head.Block.NumberU64(), stop, done)
}
lastHead = head.Block.NumberU64()
case <-done:
stop = nil
done = nil
case ch := <-indexer.progress:
ch <- indexer.report(lastHead)
case ch := <-indexer.term:
if stop != nil {
close(stop)
}
if done != nil {
log.Info("Waiting background transaction indexer to exit")
<-done
}
close(ch)
return
}
}
}
// report returns the tx indexing progress.
func (indexer *txIndexer) report(head uint64) TxIndexProgress {
var (
remaining uint64
tail = rawdb.ReadTxIndexTail(indexer.db)
)
total := indexer.limit
if indexer.limit == 0 || total > head {
total = head + 1 // genesis included
}
var indexed uint64
if tail != nil {
indexed = head - *tail + 1
}
// The value of indexed might be larger than total if some blocks need
// to be unindexed, avoiding a negative remaining.
if indexed < total {
remaining = total - indexed
}
return TxIndexProgress{
Indexed: indexed,
Remaining: remaining,
}
}
// txIndexProgress retrieves the tx indexing progress, or an error if the
// background tx indexer is already stopped.
func (indexer *txIndexer) txIndexProgress() (TxIndexProgress, error) {
ch := make(chan TxIndexProgress, 1)
select {
case indexer.progress <- ch:
return <-ch, nil
case <-indexer.closed:
return TxIndexProgress{}, errors.New("indexer is closed")
}
}
// close shutdown the indexer. Safe to be called for multiple times.
func (indexer *txIndexer) close() {
ch := make(chan struct{})
select {
case indexer.term <- ch:
<-ch
case <-indexer.closed:
}
}

243
core/txindexer_test.go Normal file
View File

@ -0,0 +1,243 @@
// Copyright 2024 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>
package core
import (
"math/big"
"os"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/params"
)
// TestTxIndexer tests the functionalities for managing transaction indexes.
func TestTxIndexer(t *testing.T) {
var (
testBankKey, _ = crypto.GenerateKey()
testBankAddress = crypto.PubkeyToAddress(testBankKey.PublicKey)
testBankFunds = big.NewInt(1000000000000000000)
gspec = &Genesis{
Config: params.TestChainConfig,
Alloc: GenesisAlloc{testBankAddress: {Balance: testBankFunds}},
BaseFee: big.NewInt(params.InitialBaseFee),
}
engine = ethash.NewFaker()
nonce = uint64(0)
chainHead = uint64(128)
)
_, blocks, receipts := GenerateChainWithGenesis(gspec, engine, int(chainHead), func(i int, gen *BlockGen) {
tx, _ := types.SignTx(types.NewTransaction(nonce, common.HexToAddress("0xdeadbeef"), big.NewInt(1000), params.TxGas, big.NewInt(10*params.InitialBaseFee), nil), types.HomesteadSigner{}, testBankKey)
gen.AddTx(tx)
nonce += 1
})
// verifyIndexes checks if the transaction indexes are present or not
// of the specified block.
verifyIndexes := func(db ethdb.Database, number uint64, exist bool) {
if number == 0 {
return
}
block := blocks[number-1]
for _, tx := range block.Transactions() {
lookup := rawdb.ReadTxLookupEntry(db, tx.Hash())
if exist && lookup == nil {
t.Fatalf("missing %d %x", number, tx.Hash().Hex())
}
if !exist && lookup != nil {
t.Fatalf("unexpected %d %x", number, tx.Hash().Hex())
}
}
}
verify := func(db ethdb.Database, expTail uint64, indexer *txIndexer) {
tail := rawdb.ReadTxIndexTail(db)
if tail == nil {
t.Fatal("Failed to write tx index tail")
}
if *tail != expTail {
t.Fatalf("Unexpected tx index tail, want %v, got %d", expTail, *tail)
}
if *tail != 0 {
for number := uint64(0); number < *tail; number += 1 {
verifyIndexes(db, number, false)
}
}
for number := *tail; number <= chainHead; number += 1 {
verifyIndexes(db, number, true)
}
progress := indexer.report(chainHead)
if !progress.Done() {
t.Fatalf("Expect fully indexed")
}
}
var cases = []struct {
limitA uint64
tailA uint64
limitB uint64
tailB uint64
limitC uint64
tailC uint64
}{
{
// LimitA: 0
// TailA: 0
//
// all blocks are indexed
limitA: 0,
tailA: 0,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
{
// LimitA: 64
// TailA: 65
//
// block [65, 128] are indexed
limitA: 64,
tailA: 65,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
{
// LimitA: 127
// TailA: 2
//
// block [2, 128] are indexed
limitA: 127,
tailA: 2,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
{
// LimitA: 128
// TailA: 1
//
// block [2, 128] are indexed
limitA: 128,
tailA: 1,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
{
// LimitA: 129
// TailA: 0
//
// block [0, 128] are indexed
limitA: 129,
tailA: 0,
// LimitB: 1
// TailB: 128
//
// block-128 is indexed
limitB: 1,
tailB: 128,
// LimitB: 64
// TailB: 65
//
// block [65, 128] are indexed
limitC: 64,
tailC: 65,
},
}
for _, c := range cases {
frdir := t.TempDir()
db, _ := rawdb.NewDatabaseWithFreezer(rawdb.NewMemoryDatabase(), frdir, "", false)
rawdb.WriteAncientBlocks(db, append([]*types.Block{gspec.ToBlock()}, blocks...), append([]types.Receipts{{}}, receipts...), big.NewInt(0))
// Index the initial blocks from ancient store
indexer := &txIndexer{
limit: c.limitA,
db: db,
progress: make(chan chan TxIndexProgress),
}
indexer.run(nil, 128, make(chan struct{}), make(chan struct{}))
verify(db, c.tailA, indexer)
indexer.limit = c.limitB
indexer.run(rawdb.ReadTxIndexTail(db), 128, make(chan struct{}), make(chan struct{}))
verify(db, c.tailB, indexer)
indexer.limit = c.limitC
indexer.run(rawdb.ReadTxIndexTail(db), 128, make(chan struct{}), make(chan struct{}))
verify(db, c.tailC, indexer)
// Recover all indexes
indexer.limit = 0
indexer.run(rawdb.ReadTxIndexTail(db), 128, make(chan struct{}), make(chan struct{}))
verify(db, 0, indexer)
db.Close()
os.RemoveAll(frdir)
}
}

2
internal/ethapi/errors.go
View File

@ -71,7 +71,7 @@ func (e *TxIndexingError) Error() string {
// ErrorCode returns the JSON error code for a revert.
// See: https://github.com/ethereum/wiki/wiki/JSON-RPC-Error-Codes-Improvement-Proposal
func (e *TxIndexingError) ErrorCode() int {
return 3 // TODO tbd
return -32000 // to be decided
}
// ErrorData returns the hex encoded revert reason.