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core: cache transaction indexing tail in memory #28908

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Merged
merged 1 commit into from
Feb 6, 2024
Merged

core: cache transaction indexing tail in memory #28908

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17 changes: 8 additions & 9 deletions core/txindexer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -127,9 +127,10 @@ func (indexer *txIndexer) loop(chain *BlockChain) {

// 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)
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)
lastTail = rawdb.ReadTxIndexTail(indexer.db) // The oldest indexed block, nil means nothing indexed

headCh = make(chan ChainHeadEvent)
sub = chain.SubscribeChainHeadEvent(headCh)
Expand All @@ -156,8 +157,9 @@ func (indexer *txIndexer) loop(chain *BlockChain) {
case <-done:
stop = nil
done = nil
lastTail = rawdb.ReadTxIndexTail(indexer.db)
case ch := <-indexer.progress:
ch <- indexer.report(lastHead)
ch <- indexer.report(lastHead, lastTail)
case ch := <-indexer.term:
if stop != nil {
close(stop)
Expand All @@ -173,11 +175,7 @@ func (indexer *txIndexer) loop(chain *BlockChain) {
}

// report returns the tx indexing progress.
func (indexer *txIndexer) report(head uint64) TxIndexProgress {
var (
remaining uint64
tail = rawdb.ReadTxIndexTail(indexer.db)
)
func (indexer *txIndexer) report(head uint64, tail *uint64) TxIndexProgress {
total := indexer.limit
if indexer.limit == 0 || total > head {
total = head + 1 // genesis included
Expand All @@ -188,6 +186,7 @@ func (indexer *txIndexer) report(head uint64) TxIndexProgress {
}
// The value of indexed might be larger than total if some blocks need
// to be unindexed, avoiding a negative remaining.
var remaining uint64
if indexed < total {
remaining = total - indexed
}
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2 changes: 1 addition & 1 deletion core/txindexer_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -85,7 +85,7 @@ func TestTxIndexer(t *testing.T) {
for number := *tail; number <= chainHead; number += 1 {
verifyIndexes(db, number, true)
}
progress := indexer.report(chainHead)
progress := indexer.report(chainHead, tail)
if !progress.Done() {
t.Fatalf("Expect fully indexed")
}
Expand Down