core/rawdb: single point of maintenance for writing and deleting tx l…

…ookup indexes (ethereum#21480)

core/blockchain.go

@@ -712,7 +712,7 @@ func (bc *BlockChain) writeHeadBlock(block *types.Block) {
 	// Add the block to the canonical chain number scheme and mark as the head
 	batch := bc.db.NewBatch()
 	rawdb.WriteCanonicalHash(batch, block.Hash(), block.NumberU64())
-	rawdb.WriteTxLookupEntries(batch, block)
+	rawdb.WriteTxLookupEntriesByBlock(batch, block)
 	rawdb.WriteHeadBlockHash(batch, block.Hash())
 
 	// If the block is better than our head or is on a different chain, force update heads
@@ -1217,9 +1217,9 @@ func (bc *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain [
 			// range. In this case, all tx indices of newly imported blocks should be
 			// generated.
 			if bc.txLookupLimit == 0 || ancientLimit <= bc.txLookupLimit || block.NumberU64() >= ancientLimit-bc.txLookupLimit {
-				rawdb.WriteTxLookupEntries(batch, block)
+				rawdb.WriteTxLookupEntriesByBlock(batch, block)
 			} else if rawdb.ReadTxIndexTail(bc.db) != nil {
-				rawdb.WriteTxLookupEntries(batch, block)
+				rawdb.WriteTxLookupEntriesByBlock(batch, block)
 			}
 			stats.processed++
 		}
@@ -1303,7 +1303,7 @@ func (bc *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain [
 			// Write all the data out into the database
 			rawdb.WriteBody(batch, block.Hash(), block.NumberU64(), block.Body())
 			rawdb.WriteReceipts(batch, block.Hash(), block.NumberU64(), receiptChain[i])
-			rawdb.WriteTxLookupEntries(batch, block) // Always write tx indices for live blocks, we assume they are needed
+			rawdb.WriteTxLookupEntriesByBlock(batch, block) // Always write tx indices for live blocks, we assume they are needed
 
 			// Write everything belongs to the blocks into the database. So that
 			// we can ensure all components of body is completed(body, receipts,

core/rawdb/accessors_indexes.go

@@ -53,25 +53,29 @@ func ReadTxLookupEntry(db ethdb.Reader, hash common.Hash) *uint64 {
 	return &entry.BlockIndex
 }
 
-// WriteTxLookupEntries stores a positional metadata for every transaction from
-// a block, enabling hash based transaction and receipt lookups.
-func WriteTxLookupEntries(db ethdb.KeyValueWriter, block *types.Block) {
-	number := block.Number().Bytes()
-	for _, tx := range block.Transactions() {
-		if err := db.Put(txLookupKey(tx.Hash()), number); err != nil {
-			log.Crit("Failed to store transaction lookup entry", "err", err)
-		}
+// writeTxLookupEntry stores a positional metadata for a transaction,
+// enabling hash based transaction and receipt lookups.
+func writeTxLookupEntry(db ethdb.KeyValueWriter, hash common.Hash, numberBytes []byte) {
+	if err := db.Put(txLookupKey(hash), numberBytes); err != nil {
+		log.Crit("Failed to store transaction lookup entry", "err", err)
 	}
 }
 
-// WriteTxLookupEntriesByHash is identical to WriteTxLookupEntries, but does not
-// require a full types.Block as input.
-func WriteTxLookupEntriesByHash(db ethdb.KeyValueWriter, number uint64, hashes []common.Hash) {
+// WriteTxLookupEntries is identical to WriteTxLookupEntry, but it works on
+// a list of hashes
+func WriteTxLookupEntries(db ethdb.KeyValueWriter, number uint64, hashes []common.Hash) {
 	numberBytes := new(big.Int).SetUint64(number).Bytes()
 	for _, hash := range hashes {
-		if err := db.Put(txLookupKey(hash), numberBytes); err != nil {
-			log.Crit("Failed to store transaction lookup entry", "err", err)
-		}
+		writeTxLookupEntry(db, hash, numberBytes)
+	}
+}
+
+// WriteTxLookupEntriesByBlock stores a positional metadata for every transaction from
+// a block, enabling hash based transaction and receipt lookups.
+func WriteTxLookupEntriesByBlock(db ethdb.KeyValueWriter, block *types.Block) {
+	numberBytes := block.Number().Bytes()
+	for _, tx := range block.Transactions() {
+		writeTxLookupEntry(db, tx.Hash(), numberBytes)
 	}
 }
 
@@ -83,11 +87,9 @@ func DeleteTxLookupEntry(db ethdb.KeyValueWriter, hash common.Hash) {
 }
 
 // DeleteTxLookupEntries removes all transaction lookups for a given block.
-func DeleteTxLookupEntriesByHash(db ethdb.KeyValueWriter, hashes []common.Hash) {
+func DeleteTxLookupEntries(db ethdb.KeyValueWriter, hashes []common.Hash) {
 	for _, hash := range hashes {
-		if err := db.Delete(txLookupKey(hash)); err != nil {
-			log.Crit("Failed to delete transaction lookup entry", "err", err)
-		}
+		DeleteTxLookupEntry(db, hash)
 	}
 }
 

core/rawdb/accessors_indexes_test.go

@@ -57,13 +57,13 @@ func (h *testHasher) Hash() common.Hash {
 // Tests that positional lookup metadata can be stored and retrieved.
 func TestLookupStorage(t *testing.T) {
 	tests := []struct {
-		name                 string
-		writeTxLookupEntries func(ethdb.Writer, *types.Block)
+		name                        string
+		writeTxLookupEntriesByBlock func(ethdb.Writer, *types.Block)
 	}{
 		{
 			"DatabaseV6",
 			func(db ethdb.Writer, block *types.Block) {
-				WriteTxLookupEntries(db, block)
+				WriteTxLookupEntriesByBlock(db, block)
 			},
 		},
 		{
@@ -110,7 +110,7 @@ func TestLookupStorage(t *testing.T) {
 			// Insert all the transactions into the database, and verify contents
 			WriteCanonicalHash(db, block.Hash(), block.NumberU64())
 			WriteBlock(db, block)
-			tc.writeTxLookupEntries(db, block)
+			tc.writeTxLookupEntriesByBlock(db, block)
 
 			for i, tx := range txs {
 				if txn, hash, number, index := ReadTransaction(db, tx.Hash()); txn == nil {

core/rawdb/chain_iterator.go

@@ -218,7 +218,7 @@ func IndexTransactions(db ethdb.Database, from uint64, to uint64) {
 			// Next block available, pop it off and index it
 			delivery := queue.PopItem().(*blockTxHashes)
 			lastNum = delivery.number
-			WriteTxLookupEntriesByHash(batch, delivery.number, delivery.hashes)
+			WriteTxLookupEntries(batch, delivery.number, delivery.hashes)
 			blocks++
 			txs += len(delivery.hashes)
 			// If enough data was accumulated in memory or we're at the last block, dump to disk
@@ -276,7 +276,7 @@ func UnindexTransactions(db ethdb.Database, from uint64, to uint64) {
 	// Otherwise spin up the concurrent iterator and unindexer
 	blocks, txs := 0, 0
 	for delivery := range hashesCh {
-		DeleteTxLookupEntriesByHash(batch, delivery.hashes)
+		DeleteTxLookupEntries(batch, delivery.hashes)
 		txs += len(delivery.hashes)
 		blocks++
 

light/txpool.go

@@ -185,7 +185,7 @@ func (pool *TxPool) checkMinedTxs(ctx context.Context, hash common.Hash, number
 		if _, err := GetBlockReceipts(ctx, pool.odr, hash, number); err != nil { // ODR caches, ignore results
 			return err
 		}
-		rawdb.WriteTxLookupEntries(pool.chainDb, block)
+		rawdb.WriteTxLookupEntriesByBlock(pool.chainDb, block)
 
 		// Update the transaction pool's state
 		for _, tx := range list {