eth/filters: reduce database read when handling eth_getLogs

While profiling, we see that when bloom filter hits, 1/3 CPU time in check log
match routine is used to get the corresponding block number from block hash.
This is redundant as this information is available already and can be passed via
function argument. This commit adds block number parameter to GetLogs interface
to pass the available block number information.

accounts/abi/bind/backends/simulated.go

@@ -847,12 +847,8 @@ func (fb *filterBackend) GetReceipts(ctx context.Context, hash common.Hash) (typ
 	return rawdb.ReadReceipts(fb.db, hash, *number, fb.bc.Config()), nil
 }
 
-func (fb *filterBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) {
-	number := rawdb.ReadHeaderNumber(fb.db, hash)
-	if number == nil {
-		return nil, nil
-	}
-	receipts := rawdb.ReadReceipts(fb.db, hash, *number, fb.bc.Config())
+func (fb *filterBackend) GetLogs(ctx context.Context, hash common.Hash, blockNumber uint64) ([][]*types.Log, error) {
+	receipts := rawdb.ReadReceipts(fb.db, hash, blockNumber, fb.bc.Config())
 	if receipts == nil {
 		return nil, nil
 	}

eth/api_backend.go

@@ -227,13 +227,9 @@ func (b *EthAPIBackend) BlobSidecarsByNumberOrHash(ctx context.Context, blockNrO
 	return nil, errors.New("invalid arguments: neither block number nor block hash hash specified")
 }
 
-func (b *EthAPIBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) {
+func (b *EthAPIBackend) GetLogs(ctx context.Context, hash common.Hash, blockNumber uint64) ([][]*types.Log, error) {
 	db := b.eth.ChainDb()
-	number := rawdb.ReadHeaderNumber(db, hash)
-	if number == nil {
-		return nil, errors.New("failed to get block number from hash")
-	}
-	logs := rawdb.ReadLogs(db, hash, *number, b.eth.blockchain.Config())
+	logs := rawdb.ReadLogs(db, hash, blockNumber, b.eth.blockchain.Config())
 	if logs == nil {
 		return nil, errors.New("failed to get logs for block")
 	}

eth/filters/filter.go

@@ -39,7 +39,7 @@ type Backend interface {
 	HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error)
 	HeaderByHash(ctx context.Context, blockHash common.Hash) (*types.Header, error)
 	GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error)
-	GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error)
+	GetLogs(ctx context.Context, blockHash common.Hash, blockNumber uint64) ([][]*types.Log, error)
 
 	SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription
 	SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription
@@ -271,7 +271,7 @@ func (f *Filter) blockLogs(ctx context.Context, header *types.Header) (logs []*t
 // match the filter criteria. This function is called when the bloom filter signals a potential match.
 func (f *Filter) checkMatches(ctx context.Context, header *types.Header) (logs []*types.Log, err error) {
 	// Get the logs of the block
-	logsList, err := f.backend.GetLogs(ctx, header.Hash())
+	logsList, err := f.backend.GetLogs(ctx, header.Hash(), header.Number.Uint64())
 	if err != nil {
 		return nil, err
 	}

eth/filters/filter_system.go

@@ -445,7 +445,7 @@ func (es *EventSystem) lightFilterLogs(header *types.Header, addresses []common.
 		// Get the logs of the block
 		ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
 		defer cancel()
-		logsList, err := es.backend.GetLogs(ctx, header.Hash())
+		logsList, err := es.backend.GetLogs(ctx, header.Hash(), header.Number.Uint64())
 		if err != nil {
 			return nil
 		}

eth/filters/filter_system_test.go

@@ -93,12 +93,8 @@ func (b *testBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.
 	return nil, nil
 }
 
-func (b *testBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) {
-	number := rawdb.ReadHeaderNumber(b.db, hash)
-	if number == nil {
-		return nil, nil
-	}
-	receipts := rawdb.ReadReceipts(b.db, hash, *number, params.TestChainConfig)
+func (b *testBackend) GetLogs(ctx context.Context, hash common.Hash, blockNumber uint64) ([][]*types.Log, error) {
+	receipts := rawdb.ReadReceipts(b.db, hash, blockNumber, params.TestChainConfig)
 
 	logs := make([][]*types.Log, len(receipts))
 	for i, receipt := range receipts {

internal/ethapi/backend.go

@@ -90,7 +90,7 @@ type Backend interface {
 
 	// Filter API
 	BloomStatus() (uint64, uint64)
-	GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error)
+	GetLogs(ctx context.Context, blockHash common.Hash, blockNumber uint64) ([][]*types.Log, error)
 	ServiceFilter(ctx context.Context, session *bloombits.MatcherSession)
 	SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription
 	SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription

les/api_backend.go

@@ -182,11 +182,8 @@ func (b *LesApiBackend) BlobSidecarsByNumberOrHash(ctx context.Context, blockNrO
 	return nil, nil
 }
 
-func (b *LesApiBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) {
-	if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil {
-		return light.GetBlockLogs(ctx, b.eth.odr, hash, *number)
-	}
-	return nil, nil
+func (b *LesApiBackend) GetLogs(ctx context.Context, hash common.Hash, blockNumber uint64) ([][]*types.Log, error) {
+	return light.GetBlockLogs(ctx, b.eth.odr, hash, blockNumber)
 }
 
 func (b *LesApiBackend) GetTd(ctx context.Context, hash common.Hash) *big.Int {