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Handle system-txn in block_reader (#4012)

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* reduce downloader deps

* reduce downloader deps

* save

* reduce downloader deps
This commit is contained in:
Alex Sharov 2022-04-28 13:08:27 +07:00 committed by GitHub
parent 831da9ba41
commit eda385eb28
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 1 deletions
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8
turbo/snapshotsync/block_reader.go
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@ -565,6 +565,7 @@ func (back *BlockReaderWithSnapshots) txsFromSnapshot(baseTxnID uint64, txsAmoun
}
func (back *BlockReaderWithSnapshots) txnByHash(txnHash common.Hash, segments []*TxnSegment, buf []byte) (txn types.Transaction, blockNum, txnID uint64, err error) {
for i := len(segments) - 1; i >= 0; i-- {
sn := segments[i]
if sn.IdxTxnHash == nil || sn.IdxTxnHash2BlockNum == nil {
@ -577,14 +578,19 @@ func (back *BlockReaderWithSnapshots) txnByHash(txnHash common.Hash, segments []
gg := sn.Seg.MakeGetter()
gg.Reset(offset)
buf, _ = gg.Next(buf[:0])
if len(buf) == 0 { // system-txn
continue
}
// first byte txnHash check - reducing false-positives 256 times. Allows don't store and don't calculate full hash of entity - when checking many snapshots.
if len(buf) > 1 && txnHash[0] != buf[0] {
continue
}
sender := buf[1 : 1+20]
reader2 := recsplit.NewIndexReader(sn.IdxTxnHash2BlockNum)
blockNum = reader2.Lookup(txnHash[:])
sender := buf[1 : 1+20]
txn, err = types.DecodeTransaction(rlp.NewStream(bytes.NewReader(buf[1+20:]), uint64(len(buf))))
if err != nil {
return