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eth, les, light: filter on logs only, derive receipts on demand

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This commit is contained in:
Péter Szilágyi 2018-02-22 12:48:14 +02:00
parent 4535247793
commit 5cf1d35470
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GPG Key ID: E9AE538CEDF8293D
8 changed files with 123 additions and 17 deletions
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13
accounts/abi/bind/backends/simulated.go
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@ -428,10 +428,23 @@ func (fb *filterBackend) HeaderByNumber(ctx context.Context, block rpc.BlockNumb
}
return fb.bc.GetHeaderByNumber(uint64(block.Int64())), nil
}
func (fb *filterBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
return core.GetBlockReceipts(fb.db, hash, core.GetBlockNumber(fb.db, hash)), nil
}
func (fb *filterBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) {
receipts := core.GetBlockReceipts(fb.db, hash, core.GetBlockNumber(fb.db, hash))
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 (fb *filterBackend) SubscribeTxPreEvent(ch chan<- core.TxPreEvent) event.Subscription {
return event.NewSubscription(func(quit <-chan struct{}) error {
<-quit

12
eth/api_backend.go
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@ -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)
}

19
eth/filters/filter.go
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@ -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

22
eth/filters/filter_system.go
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@ -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

15
eth/filters/filter_system_test.go
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@ -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 {

10
internal/ethapi/api.go
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@ -1032,15 +1032,19 @@ func (s *PublicTransactionPoolAPI) GetRawTransactionByHash(ctx context.Context,
}
// GetTransactionReceipt returns the transaction receipt for the given transaction hash.
func (s *PublicTransactionPoolAPI) GetTransactionReceipt(hash common.Hash) (map[string]interface{}, error) {
func (s *PublicTransactionPoolAPI) GetTransactionReceipt(ctx context.Context, hash common.Hash) (map[string]interface{}, error) {
tx, blockHash, blockNumber, index := core.GetTransaction(s.b.ChainDb(), hash)
if tx == nil {
return nil, errors.New("unknown transaction")
}
receipt, _, _, _ := core.GetReceipt(s.b.ChainDb(), hash) // Old receipts don't have the lookup data available
if receipt == nil {
receipts, err := s.b.GetReceipts(ctx, blockHash)
if err != nil {
return nil, err
}
if len(receipts) <= int(index) {
return nil, errors.New("unknown receipt")
}
receipt := receipts[index]
var signer types.Signer = types.FrontierSigner{}
if tx.Protected() {

4
les/api_backend.go
View File

@ -87,6 +87,10 @@ func (b *LesApiBackend) GetReceipts(ctx context.Context, blockHash common.Hash)
return light.GetBlockReceipts(ctx, b.eth.odr, blockHash, core.GetBlockNumber(b.eth.chainDb, blockHash))
}
func (b *LesApiBackend) GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error) {
return light.GetBlockLogs(ctx, b.eth.odr, blockHash, core.GetBlockNumber(b.eth.chainDb, blockHash))
}
func (b *LesApiBackend) GetTd(blockHash common.Hash) *big.Int {
return b.eth.blockchain.GetTdByHash(blockHash)
}

45
light/odr_util.go
View File

@ -126,15 +126,48 @@ func GetBlock(ctx context.Context, odr OdrBackend, hash common.Hash, number uint
// GetBlockReceipts retrieves the receipts generated by the transactions included
// in a block given by its hash.
func GetBlockReceipts(ctx context.Context, odr OdrBackend, hash common.Hash, number uint64) (types.Receipts, error) {
// Retrieve the potentially incomplete receipts from disk or network
receipts := core.GetBlockReceipts(odr.Database(), hash, number)
if receipts != nil {
return receipts, nil
if receipts == nil {
r := &ReceiptsRequest{Hash: hash, Number: number}
if err := odr.Retrieve(ctx, r); err != nil {
return nil, err
}
receipts = r.Receipts
}
r := &ReceiptsRequest{Hash: hash, Number: number}
if err := odr.Retrieve(ctx, r); err != nil {
return nil, err
// If the receipts are incomplete, fill the derived fields
if len(receipts) > 0 && receipts[0].TxHash == (common.Hash{}) {
block, err := GetBlock(ctx, odr, hash, number)
if err != nil {
return nil, err
}
genesis := core.GetCanonicalHash(odr.Database(), 0)
config, _ := core.GetChainConfig(odr.Database(), genesis)
core.SetReceiptsData(config, block, receipts)
core.WriteBlockReceipts(odr.Database(), hash, number, receipts)
}
return r.Receipts, nil
return receipts, nil
}
// GetBlockLogs retrieves the logs generated by the transactions included in a
// block given by its hash.
func GetBlockLogs(ctx context.Context, odr OdrBackend, hash common.Hash, number uint64) ([][]*types.Log, error) {
// Retrieve the potentially incomplete receipts from disk or network
receipts := core.GetBlockReceipts(odr.Database(), hash, number)
if receipts == nil {
r := &ReceiptsRequest{Hash: hash, Number: number}
if err := odr.Retrieve(ctx, r); err != nil {
return nil, err
}
receipts = r.Receipts
}
// Return the logs without deriving any computed fields on the receipts
logs := make([][]*types.Log, len(receipts))
for i, receipt := range receipts {
logs[i] = receipt.Logs
}
return logs, nil
}
// GetBloomBits retrieves a batch of compressed bloomBits vectors belonging to the given bit index and section indexes