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authorDomino Valdano <dominoplural@gmail.com>2018-05-12 17:20:46 +0800
committerPéter Szilágyi <peterke@gmail.com>2018-07-12 23:16:32 +0800
commit96339daf40989072ff2a9e8b476da6698da45dc7 (patch)
treedd1d0dba7a4ac7071378cf06983dc68ce5b40f9d /eth
parente8824f6e7409a2064b1165c5b6cc6b2d390573ce (diff)
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eth/filters, ethereum: EIP-234 add blockHash param for eth_getLogs
Diffstat (limited to 'eth')
-rw-r--r--eth/filters/api.go56
-rw-r--r--eth/filters/filter_system_test.go27
2 files changed, 70 insertions, 13 deletions
diff --git a/eth/filters/api.go b/eth/filters/api.go
index 592ad3b82..f964d9232 100644
--- a/eth/filters/api.go
+++ b/eth/filters/api.go
@@ -28,6 +28,7 @@ import (
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
+ "github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
@@ -324,15 +325,35 @@ func (api *PublicFilterAPI) NewFilter(crit FilterCriteria) (rpc.ID, error) {
//
// https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getlogs
func (api *PublicFilterAPI) GetLogs(ctx context.Context, crit FilterCriteria) ([]*types.Log, error) {
- // Convert the RPC block numbers into internal representations
- if crit.FromBlock == nil {
- crit.FromBlock = big.NewInt(rpc.LatestBlockNumber.Int64())
- }
- if crit.ToBlock == nil {
- crit.ToBlock = big.NewInt(rpc.LatestBlockNumber.Int64())
+ var (
+ fromBlock int64
+ toBlock int64
+ )
+
+ if crit.BlockHash != nil {
+ // look up block number from block hash
+ if block := rawdb.ReadHeaderNumber(api.chainDb, *crit.BlockHash); block != nil {
+ // verify block is part of canonical chain
+ if canonical := rawdb.ReadCanonicalHash(api.chainDb, *block); canonical != *crit.BlockHash {
+ return nil, fmt.Errorf("Block with hash %s was removed from canonical chain", crit.BlockHash.Hex())
+ }
+ fromBlock = int64(*block)
+ toBlock = fromBlock
+ } else {
+ return nil, fmt.Errorf("Block with hash %s was not found", crit.BlockHash.Hex())
+ }
+ } else {
+ // Convert the RPC block numbers into internal representations
+ if crit.FromBlock == nil {
+ fromBlock = int64(rpc.LatestBlockNumber)
+ }
+ if crit.ToBlock == nil {
+ toBlock = int64(rpc.LatestBlockNumber)
+ }
}
+
// Create and run the filter to get all the logs
- filter := New(api.backend, crit.FromBlock.Int64(), crit.ToBlock.Int64(), crit.Addresses, crit.Topics)
+ filter := New(api.backend, fromBlock, toBlock, crit.Addresses, crit.Topics)
logs, err := filter.Logs(ctx)
if err != nil {
@@ -444,7 +465,8 @@ func returnLogs(logs []*types.Log) []*types.Log {
// UnmarshalJSON sets *args fields with given data.
func (args *FilterCriteria) UnmarshalJSON(data []byte) error {
type input struct {
- From *rpc.BlockNumber `json:"fromBlock"`
+ BlockHash *common.Hash `json:"blockHash"`
+ FromBlock *rpc.BlockNumber `json:"fromBlock"`
ToBlock *rpc.BlockNumber `json:"toBlock"`
Addresses interface{} `json:"address"`
Topics []interface{} `json:"topics"`
@@ -455,12 +477,20 @@ func (args *FilterCriteria) UnmarshalJSON(data []byte) error {
return err
}
- if raw.From != nil {
- args.FromBlock = big.NewInt(raw.From.Int64())
- }
+ if raw.BlockHash != nil {
+ if raw.FromBlock != nil || raw.ToBlock != nil {
+ // BlockHash is mutually exclusive with FromBlock/ToBlock criteria
+ return fmt.Errorf("cannot specify both BlockHash and FromBlock/ToBlock, choose one or the other")
+ }
+ args.BlockHash = raw.BlockHash
+ } else {
+ if raw.FromBlock != nil {
+ args.FromBlock = big.NewInt(raw.FromBlock.Int64())
+ }
- if raw.ToBlock != nil {
- args.ToBlock = big.NewInt(raw.ToBlock.Int64())
+ if raw.ToBlock != nil {
+ args.ToBlock = big.NewInt(raw.ToBlock.Int64())
+ }
}
args.Addresses = []common.Address{}
diff --git a/eth/filters/filter_system_test.go b/eth/filters/filter_system_test.go
index ff1af85a8..2c1e8a2eb 100644
--- a/eth/filters/filter_system_test.go
+++ b/eth/filters/filter_system_test.go
@@ -343,6 +343,33 @@ func TestInvalidLogFilterCreation(t *testing.T) {
}
}
+func TestInvalidGetLogsRequest(t *testing.T) {
+ var (
+ mux = new(event.TypeMux)
+ db = ethdb.NewMemDatabase()
+ txFeed = new(event.Feed)
+ rmLogsFeed = new(event.Feed)
+ logsFeed = new(event.Feed)
+ chainFeed = new(event.Feed)
+ backend = &testBackend{mux, db, 0, txFeed, rmLogsFeed, logsFeed, chainFeed}
+ api = NewPublicFilterAPI(backend, false)
+ blockHash = common.HexToHash("0x1111111111111111111111111111111111111111111111111111111111111111")
+ )
+
+ // Reason: Cannot specify both BlockHash and FromBlock/ToBlock)
+ testCases := []FilterCriteria{
+ 0: {BlockHash: &blockHash, FromBlock: big.NewInt(100)},
+ 1: {BlockHash: &blockHash, ToBlock: big.NewInt(500)},
+ 2: {BlockHash: &blockHash, FromBlock: big.NewInt(rpc.LatestBlockNumber.Int64())},
+ }
+
+ for i, test := range testCases {
+ if _, err := api.GetLogs(context.Background(), test); err == nil {
+ t.Errorf("Expected Logs for case #%d to fail", i)
+ }
+ }
+}
+
// TestLogFilter tests whether log filters match the correct logs that are posted to the event feed.
func TestLogFilter(t *testing.T) {
t.Parallel()