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authorPéter Szilágyi <peterke@gmail.com>2018-02-22 18:48:14 +0800
committerPéter Szilágyi <peterke@gmail.com>2018-02-23 01:12:43 +0800
commit5cf1d354704cd2cbc5c64c96d4aaabeeec7dd161 (patch)
tree10c38cbf3cd5a0e796d6df6c667cc84ce57e2a34 /eth
parent45352477933d71ec5055504da74547b0cdf0274b (diff)
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eth, les, light: filter on logs only, derive receipts on demand
Diffstat (limited to 'eth')
-rw-r--r--eth/api_backend.go12
-rw-r--r--eth/filters/filter.go19
-rw-r--r--eth/filters/filter_system.go22
-rw-r--r--eth/filters/filter_system_test.go15
4 files changed, 60 insertions, 8 deletions
diff --git a/eth/api_backend.go b/eth/api_backend.go
index 91f392f94..ecd5488a2 100644
--- a/eth/api_backend.go
+++ b/eth/api_backend.go
@@ -104,6 +104,18 @@ func (b *EthApiBackend) GetReceipts(ctx context.Context, blockHash common.Hash)
return core.GetBlockReceipts(b.eth.chainDb, blockHash, core.GetBlockNumber(b.eth.chainDb, blockHash)), nil
}
+func (b *EthApiBackend) GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error) {
+ receipts := core.GetBlockReceipts(b.eth.chainDb, blockHash, core.GetBlockNumber(b.eth.chainDb, blockHash))
+ if receipts == nil {
+ return nil, nil
+ }
+ logs := make([][]*types.Log, len(receipts))
+ for i, receipt := range receipts {
+ logs[i] = receipt.Logs
+ }
+ return logs, nil
+}
+
func (b *EthApiBackend) GetTd(blockHash common.Hash) *big.Int {
return b.eth.blockchain.GetTdByHash(blockHash)
}
diff --git a/eth/filters/filter.go b/eth/filters/filter.go
index 43d7e2a81..5dfe60e77 100644
--- a/eth/filters/filter.go
+++ b/eth/filters/filter.go
@@ -34,6 +34,7 @@ type Backend interface {
EventMux() *event.TypeMux
HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error)
GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error)
+ GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error)
SubscribeTxPreEvent(chan<- core.TxPreEvent) event.Subscription
SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription
@@ -201,16 +202,28 @@ func (f *Filter) unindexedLogs(ctx context.Context, end uint64) ([]*types.Log, e
// 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
- receipts, err := f.backend.GetReceipts(ctx, header.Hash())
+ logsList, err := f.backend.GetLogs(ctx, header.Hash())
if err != nil {
return nil, err
}
var unfiltered []*types.Log
- for _, receipt := range receipts {
- unfiltered = append(unfiltered, receipt.Logs...)
+ for _, logs := range logsList {
+ unfiltered = append(unfiltered, logs...)
}
logs = filterLogs(unfiltered, nil, nil, f.addresses, f.topics)
if len(logs) > 0 {
+ // We have matching logs, check if we need to resolve full logs via the light client
+ if logs[0].TxHash == (common.Hash{}) {
+ receipts, err := f.backend.GetReceipts(ctx, header.Hash())
+ if err != nil {
+ return nil, err
+ }
+ unfiltered = unfiltered[:0]
+ for _, receipt := range receipts {
+ unfiltered = append(unfiltered, receipt.Logs...)
+ }
+ logs = filterLogs(unfiltered, nil, nil, f.addresses, f.topics)
+ }
return logs, nil
}
return nil, nil
diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go
index b09998f9c..f8097c7b9 100644
--- a/eth/filters/filter_system.go
+++ b/eth/filters/filter_system.go
@@ -375,19 +375,35 @@ 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()
- receipts, err := es.backend.GetReceipts(ctx, header.Hash())
+ logsList, err := es.backend.GetLogs(ctx, header.Hash())
if err != nil {
return nil
}
var unfiltered []*types.Log
- for _, receipt := range receipts {
- for _, log := range receipt.Logs {
+ for _, logs := range logsList {
+ for _, log := range logs {
logcopy := *log
logcopy.Removed = remove
unfiltered = append(unfiltered, &logcopy)
}
}
logs := filterLogs(unfiltered, nil, nil, addresses, topics)
+ if len(logs) > 0 && logs[0].TxHash == (common.Hash{}) {
+ // We have matching but non-derived logs
+ receipts, err := es.backend.GetReceipts(ctx, header.Hash())
+ if err != nil {
+ return nil
+ }
+ unfiltered = unfiltered[:0]
+ for _, receipt := range receipts {
+ for _, log := range receipt.Logs {
+ logcopy := *log
+ logcopy.Removed = remove
+ unfiltered = append(unfiltered, &logcopy)
+ }
+ }
+ logs = filterLogs(unfiltered, nil, nil, addresses, topics)
+ }
return logs
}
return nil
diff --git a/eth/filters/filter_system_test.go b/eth/filters/filter_system_test.go
index 7ec3b4be7..61761151a 100644
--- a/eth/filters/filter_system_test.go
+++ b/eth/filters/filter_system_test.go
@@ -69,8 +69,19 @@ func (b *testBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumbe
}
func (b *testBackend) GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error) {
- num := core.GetBlockNumber(b.db, blockHash)
- return core.GetBlockReceipts(b.db, blockHash, num), nil
+ number := core.GetBlockNumber(b.db, blockHash)
+ return core.GetBlockReceipts(b.db, blockHash, number), nil
+}
+
+func (b *testBackend) GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error) {
+ number := core.GetBlockNumber(b.db, blockHash)
+ receipts := core.GetBlockReceipts(b.db, blockHash, number)
+
+ logs := make([][]*types.Log, len(receipts))
+ for i, receipt := range receipts {
+ logs[i] = receipt.Logs
+ }
+ return logs, nil
}
func (b *testBackend) SubscribeTxPreEvent(ch chan<- core.TxPreEvent) event.Subscription {