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Code Issues Projects Releases Wiki Activity

Implement cache for recording removed logs due to reorg (#1241)

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Adjust criteria if replaced logs were received and add more tests

Improve validation

Changes after review
This commit is contained in:
Dmitry Shulyak 2018-10-28 17:12:16 +01:00 committed by GitHub
parent 22eb53ea8c
commit 539fa01d48
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 440 additions and 178 deletions
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20
services/rpcfilters/api.go
View File

@ -48,9 +48,10 @@ func NewPublicAPI(s *Service) *PublicAPI {
filters: make(map[rpc.ID]filter),
latestBlockChangedEvent: s.latestBlockChangedEvent,
transactionSentToUpstreamEvent: s.transactionSentToUpstreamEvent,
client: func() ContextCaller { return s.rpc.RPCClient() },
filterLivenessLoop: defaultFilterLivenessPeriod,
filterLivenessPeriod: defaultFilterLivenessPeriod + 10*time.Second,
client: func() ContextCaller { return s.rpc.RPCClient() },
filterLivenessLoop: defaultFilterLivenessPeriod,
filterLivenessPeriod: defaultFilterLivenessPeriod + 10*time.Second,
}
go api.timeoutLoop(s.quit)
return api
@ -85,12 +86,13 @@ func (api *PublicAPI) NewFilter(crit filters.FilterCriteria) (rpc.ID, error) {
id := rpc.ID(uuid.New())
ctx, cancel := context.WithCancel(context.Background())
f := &logsFilter{
id: id,
crit: ethereum.FilterQuery(crit),
done: make(chan struct{}),
timer: time.NewTimer(api.filterLivenessPeriod),
ctx: ctx,
cancel: cancel,
id: id,
crit: ethereum.FilterQuery(crit),
done: make(chan struct{}),
timer: time.NewTimer(api.filterLivenessPeriod),
ctx: ctx,
cancel: cancel,
logsCache: newCache(defaultCacheSize),
}
api.filtersMu.Lock()
api.filters[id] = f

30
services/rpcfilters/latest_logs.go
View File

@ -18,19 +18,16 @@ type ContextCaller interface {
}
func pollLogs(client ContextCaller, f *logsFilter, timeout, period time.Duration) {
adjusted := false
query := func() {
ctx, cancel := context.WithTimeout(f.ctx, timeout)
logs, err := getLogs(ctx, client, f.crit)
cancel()
defer cancel()
logs, err := getLogs(ctx, client, f.criteria())
if err != nil {
log.Error("failed to get logs", "criteria", f.crit, "error", err)
} else if !adjusted {
adjustFromBlock(&f.crit)
adjusted = true
log.Error("Error fetch logs", "criteria", f.crit, "error", err)
return
}
if err := f.add(logs); err != nil {
log.Error("error adding logs", "logs", logs, "error", err)
log.Error("Error adding logs", "logs", logs, "error", err)
}
}
query()
@ -41,26 +38,11 @@ func pollLogs(client ContextCaller, f *logsFilter, timeout, period time.Duration
case <-latest.C:
query()
case <-f.done:
log.Debug("filter was stopped", "ID", f.id, "crit", f.crit)
log.Debug("Filter was stopped", "ID", f.id, "crit", f.crit)
return
}
}
}
// adjustFromBlock adjusts crit.FromBlock to the latest to avoid querying same logs multiple times.
func adjustFromBlock(crit *ethereum.FilterQuery) {
latest := big.NewInt(rpc.LatestBlockNumber.Int64())
// don't adjust if filter is not interested in newer blocks
if crit.ToBlock != nil && crit.ToBlock.Cmp(latest) == 1 {
return
}
// don't adjust if from block is already pending
if crit.FromBlock != nil && crit.FromBlock.Cmp(latest) == -1 {
return
}
crit.FromBlock = latest
}
func getLogs(ctx context.Context, client ContextCaller, crit ethereum.FilterQuery) (rst []types.Log, err error) {
return rst, client.CallContext(ctx, &rst, "eth_getLogs", toFilterArg(crit))
}

83
services/rpcfilters/latest_logs_test.go
View File

@ -9,6 +9,7 @@ import (
"time"
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/types"
"github.com/stretchr/testify/assert"
@ -43,10 +44,8 @@ func (c *callTracker) CallContext(ctx context.Context, result interface{}, metho
return nil
}
func runLogsFetcherTest(t *testing.T, f *logsFilter) *callTracker {
c := callTracker{reply: [][]types.Log{
make([]types.Log, 2),
}}
func runLogsFetcherTest(t *testing.T, f *logsFilter, replies [][]types.Log, queries int) *callTracker {
c := callTracker{reply: replies}
var wg sync.WaitGroup
wg.Add(1)
go func() {
@ -66,7 +65,7 @@ func runLogsFetcherTest(t *testing.T, f *logsFilter) *callTracker {
c.mu.Lock()
num := c.calls
c.mu.Unlock()
if num >= 2 {
if num >= queries {
f.stop()
return
}
@ -74,7 +73,7 @@ func runLogsFetcherTest(t *testing.T, f *logsFilter) *callTracker {
}
}()
wg.Wait()
require.Len(t, c.criterias, 2)
require.Len(t, c.criterias, queries)
return &c
}
@ -84,13 +83,38 @@ func TestLogsFetcherAdjusted(t *testing.T) {
crit: ethereum.FilterQuery{
FromBlock: big.NewInt(10),
},
done: make(chan struct{}),
done: make(chan struct{}),
logsCache: newCache(defaultCacheSize),
}
c := runLogsFetcherTest(t, f)
logs := []types.Log{
{BlockNumber: 11}, {BlockNumber: 12},
}
c := runLogsFetcherTest(t, f, [][]types.Log{logs}, 2)
require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criterias[0]["fromBlock"])
require.Equal(t, c.criterias[1]["fromBlock"], "latest")
}
func TestAdjustedDueToReorg(t *testing.T) {
f := &logsFilter{
ctx: context.TODO(),
crit: ethereum.FilterQuery{
FromBlock: big.NewInt(10),
},
done: make(chan struct{}),
logsCache: newCache(defaultCacheSize),
}
logs := []types.Log{
{BlockNumber: 11, BlockHash: common.Hash{1}}, {BlockNumber: 12, BlockHash: common.Hash{2}},
}
reorg := []types.Log{
{BlockNumber: 12, BlockHash: common.Hash{2, 2}},
}
c := runLogsFetcherTest(t, f, [][]types.Log{logs, reorg}, 3)
require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criterias[0]["fromBlock"])
require.Equal(t, "latest", c.criterias[1]["fromBlock"])
require.Equal(t, hexutil.EncodeBig(big.NewInt(11)), c.criterias[2]["fromBlock"])
}
func TestLogsFetcherCanceledContext(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
f := &logsFilter{
@ -98,48 +122,11 @@ func TestLogsFetcherCanceledContext(t *testing.T) {
crit: ethereum.FilterQuery{
FromBlock: big.NewInt(10),
},
done: make(chan struct{}),
done: make(chan struct{}),
logsCache: newCache(defaultCacheSize),
}
cancel()
c := runLogsFetcherTest(t, f)
c := runLogsFetcherTest(t, f, [][]types.Log{make([]types.Log, 2)}, 2)
require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criterias[0]["fromBlock"])
require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criterias[1]["fromBlock"])
}
func TestAdjustFromBlock(t *testing.T) {
type testCase struct {
description string
initial ethereum.FilterQuery
result ethereum.FilterQuery
}
for _, tc := range []testCase{
{
"ToBlockHigherThenLatest",
ethereum.FilterQuery{ToBlock: big.NewInt(10)},
ethereum.FilterQuery{ToBlock: big.NewInt(10)},
},
{
"FromBlockIsPending",
ethereum.FilterQuery{FromBlock: big.NewInt(-2)},
ethereum.FilterQuery{FromBlock: big.NewInt(-2)},
},
{
"FromBlockIsOlderThenLatest",
ethereum.FilterQuery{FromBlock: big.NewInt(10)},
ethereum.FilterQuery{FromBlock: big.NewInt(-1)},
},
{
"NotInterestedInLatestBlocks",
ethereum.FilterQuery{FromBlock: big.NewInt(10), ToBlock: big.NewInt(15)},
ethereum.FilterQuery{FromBlock: big.NewInt(10), ToBlock: big.NewInt(15)},
},
} {
tc := tc
t.Run(tc.description, func(t *testing.T) {
t.Parallel()
adjustFromBlock(&tc.initial)
require.Equal(t, tc.result, tc.initial)
})
}
}

146
services/rpcfilters/logs_cache.go Normal file
View File

@ -0,0 +1,146 @@
package rpcfilters
import (
"fmt"
"sort"
"sync"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
)
const (
defaultCacheSize = 20
)
type cacheRecord struct {
block uint64
hash common.Hash
logs []types.Log
}
func newCache(size int) *cache {
return &cache{
records: make([]cacheRecord, 0, size),
size: size,
}
}
type cache struct {
mu sync.RWMutex
size int // length of the records
records []cacheRecord
}
// add inserts logs into cache and returns added and replaced logs.
// replaced logs with will be returned with Removed=true.
func (c *cache) add(logs []types.Log) (added, replaced []types.Log, err error) {
if len(logs) == 0 {
return nil, nil, nil
}
aggregated := aggregateLogs(logs, c.size) // size doesn't change
if len(aggregated) == 0 {
return nil, nil, nil
}
if err := checkLogsAreInOrder(aggregated); err != nil {
return nil, nil, err
}
c.mu.Lock()
defer c.mu.Unlock()
// find common block. e.g. [3,4] and [1,2,3,4] = 3
last := 0
if len(c.records) > 0 {
last = len(c.records) - 1
for aggregated[0].block < c.records[last].block && last > 0 {
last--
}
}
c.records, added, replaced = merge(last, c.records, aggregated)
if lth := len(c.records); lth > c.size {
copy(c.records, c.records[lth-c.size:])
}
return added, replaced, nil
}
func (c *cache) earliestBlockNum() uint64 {
if len(c.records) == 0 {
return 0
}
return c.records[0].block
}
func checkLogsAreInOrder(records []cacheRecord) error {
for prev, i := 0, 1; i < len(records); i++ {
if records[prev].block == records[i].block-1 {
prev = i
} else {
return fmt.Errorf(
"logs must be delivered straight in order. gaps between blocks '%d' and '%d'",
records[prev].block, records[i].block,
)
}
}
return nil
}
// merge merges received records into old slice starting at provided position, example:
// [1, 2, 3]
// [2, 3, 4]
// [1, 2, 3, 4]
// if hash doesn't match previously received hash - such block was removed due to reorg
// logs that were a part of that block will be returned with Removed set to true
func merge(last int, old, received []cacheRecord) ([]cacheRecord, []types.Log, []types.Log) {
var (
added, replaced []types.Log
block uint64
hash common.Hash
)
for i := range received {
record := received[i]
if last < len(old) {
block = old[last].block
hash = old[last].hash
}
if record.block > block {
// simply add new records
added = append(added, record.logs...)
old = append(old, record)
} else if record.hash != hash && record.block == block {
// record hash is not equal to previous record hash at the same height
// replace record in hash and add logs as replaced
replaced = append(replaced, old[last].logs...)
added = append(added, record.logs...)
old[last] = record
}
last++
}
return old, added, replaced
}
// aggregateLogs creates at most requested amount of cacheRecords from provided logs.
// cacheRecords will be sorted in ascending order, starting from lowest block to highest.
func aggregateLogs(logs []types.Log, limit int) []cacheRecord {
// sort in reverse order, so that iteration will start from latest blocks
sort.Slice(logs, func(i, j int) bool {
return logs[i].BlockNumber > logs[j].BlockNumber
})
rst := make([]cacheRecord, limit)
pos, start := len(rst)-1, 0
var hash common.Hash
for i := range logs {
log := logs[i]
if (hash != common.Hash{}) && hash != log.BlockHash {
rst[pos].logs = logs[start:i]
start = i
if pos-1 < 0 {
break
}
pos--
}
rst[pos].logs = logs[start:]
rst[pos].block = log.BlockNumber
rst[pos].hash = log.BlockHash
hash = log.BlockHash
}
return rst[pos:]
}

120
services/rpcfilters/logs_cache_test.go Normal file
View File

@ -0,0 +1,120 @@
package rpcfilters
import (
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestAggregateLogs(t *testing.T) {
logs := []types.Log{}
for i := 1; i <= 15; i++ {
logs = append(logs,
types.Log{BlockNumber: uint64(i), BlockHash: common.Hash{byte(i)}},
types.Log{BlockNumber: uint64(i), BlockHash: common.Hash{byte(i)}})
}
aggregated := aggregateLogs(logs, 10)
start := 15 - len(aggregated) + 1
for _, record := range aggregated {
assert.Equal(t, start, int(record.block)) // numbers are small
assert.Len(t, record.logs, 2)
start++
}
}
func TestAggregateLessThenFull(t *testing.T) {
logs := []types.Log{}
for i := 1; i <= 3; i++ {
logs = append(logs,
types.Log{BlockNumber: uint64(i), BlockHash: common.Hash{byte(i)}})
}
aggregated := aggregateLogs(logs, 10)
start := 1
for _, record := range aggregated {
assert.Equal(t, start, int(record.block)) // numbers are small
assert.Len(t, record.logs, 1)
start++
}
}
func TestMerge(t *testing.T) {
step1Logs := []types.Log{
{BlockNumber: 1, BlockHash: common.Hash{1}},
{BlockNumber: 2, BlockHash: common.Hash{2}},
{BlockNumber: 3, BlockHash: common.Hash{3}},
}
step2Logs := []types.Log{
{BlockNumber: 2, BlockHash: common.Hash{2}},
{BlockNumber: 3, BlockHash: common.Hash{3}},
{BlockNumber: 4, BlockHash: common.Hash{4}},
}
reorg := []types.Log{
{BlockNumber: 2, BlockHash: common.Hash{2, 2}},
{BlockNumber: 3, BlockHash: common.Hash{3, 3}},
{BlockNumber: 4, BlockHash: common.Hash{4, 4}},
{BlockNumber: 5, BlockHash: common.Hash{5, 4}},
}
limit := 7
cache := make([]cacheRecord, 0, limit)
cache, added, replaced := merge(0, cache, aggregateLogs(step1Logs, limit))
require.Len(t, added, 3)
require.Empty(t, replaced)
require.Equal(t, 3, int(cache[2].block))
cache, added, replaced = merge(1, cache, aggregateLogs(step2Logs, limit))
require.Len(t, added, 1)
require.Empty(t, replaced)
require.Equal(t, 4, int(cache[3].block))
_, added, replaced = merge(1, cache, aggregateLogs(reorg, limit))
require.Len(t, added, 4)
require.Len(t, replaced, 3)
}
func TestMergeFull(t *testing.T) {
old := []cacheRecord{
{block: 1, hash: common.Hash{1}},
{block: 2, hash: common.Hash{2}},
{block: 3, hash: common.Hash{3}},
}
new := []cacheRecord{
{block: 4, hash: common.Hash{4}},
{block: 5, hash: common.Hash{5}},
}
old, _, _ = merge(0, old, new)
require.Len(t, old, 5)
require.Equal(t, int(old[2].block), 3)
require.Equal(t, int(old[3].block), 4)
require.Equal(t, int(old[4].block), 5)
}
func TestAddLogs(t *testing.T) {
c := newCache(7)
step1Logs := []types.Log{
{BlockNumber: 1, BlockHash: common.Hash{1}},
{BlockNumber: 2, BlockHash: common.Hash{2}},
{BlockNumber: 3, BlockHash: common.Hash{3}},
}
step2Logs := []types.Log{
{BlockNumber: 2, BlockHash: common.Hash{2}},
{BlockNumber: 3, BlockHash: common.Hash{3}},
{BlockNumber: 4, BlockHash: common.Hash{4}},
}
added, replaced, err := c.add(step1Logs)
require.NoError(t, err)
require.Len(t, added, 3)
require.Empty(t, replaced)
added, replaced, err = c.add(step2Logs)
require.NoError(t, err)
require.Len(t, added, 1)
require.Empty(t, replaced)
}
func TestAddLogsNotInOrder(t *testing.T) {
c := newCache(7)
logs := []types.Log{{BlockNumber: 1, BlockHash: common.Hash{1}}, {BlockNumber: 3, BlockHash: common.Hash{3}}}
_, _, err := c.add(logs)
require.EqualError(t, err, "logs must be delivered straight in order. gaps between blocks '1' and '3'")
}

89
services/rpcfilters/logs_filter.go
View File

@ -2,7 +2,8 @@ package rpcfilters
import (
"context"
"errors"
"fmt"
"math/big"
"sync"
"time"
@ -13,13 +14,13 @@ import (
)
type logsFilter struct {
mu sync.Mutex
logs []types.Log
lastSeenBlockNumber uint64
lastSeenBlockHash common.Hash
mu sync.RWMutex
logs []types.Log
crit ethereum.FilterQuery
logsCache *cache
id rpc.ID
crit ethereum.FilterQuery
timer *time.Timer
ctx context.Context
@ -27,17 +28,43 @@ type logsFilter struct {
done chan struct{}
}
func (f *logsFilter) criteria() ethereum.FilterQuery {
f.mu.RLock()
defer f.mu.RUnlock()
return f.crit
}
func (f *logsFilter) add(data interface{}) error {
logs, ok := data.([]types.Log)
if !ok {
return errors.New("provided value is not a []types.Log")
return fmt.Errorf("can't cast %v to types.Log", data)
}
filtered := filterLogs(logs, f.crit)
if len(filtered) > 0 {
f.mu.Lock()
defer f.mu.Unlock()
added, replaced, err := f.logsCache.add(filtered)
if err != nil {
return err
}
for _, log := range replaced {
log.Removed = true
f.logs = append(f.logs, log)
}
if len(added) > 0 {
f.logs = append(f.logs, added...)
}
// if there was no replaced logs - keep polling only latest logs
if len(replaced) == 0 {
adjustFromBlock(&f.crit)
} else {
// otherwise poll earliest known block in cache
earliest := f.logsCache.earliestBlockNum()
if earliest != 0 {
f.crit.FromBlock = new(big.Int).SetUint64(earliest)
}
}
}
filtered, num, hash := filterLogs(logs, f.crit, f.lastSeenBlockNumber, f.lastSeenBlockHash)
f.mu.Lock()
f.lastSeenBlockNumber = num
f.lastSeenBlockHash = hash
f.logs = append(f.logs, filtered...)
f.mu.Unlock()
return nil
}
@ -65,6 +92,20 @@ func (f *logsFilter) deadline() *time.Timer {
return f.timer
}
// adjustFromBlock adjusts crit.FromBlock to latest to avoid querying same logs.
func adjustFromBlock(crit *ethereum.FilterQuery) {
latest := big.NewInt(rpc.LatestBlockNumber.Int64())
// don't adjust if filter is not interested in newer blocks
if crit.ToBlock != nil && crit.ToBlock.Cmp(latest) == 1 {
return
}
// don't adjust if from block is already pending
if crit.FromBlock != nil && crit.FromBlock.Cmp(latest) == -1 {
return
}
crit.FromBlock = latest
}
func includes(addresses []common.Address, a common.Address) bool {
for _, addr := range addresses {
if addr == a {
@ -75,31 +116,17 @@ func includes(addresses []common.Address, a common.Address) bool {
}
// filterLogs creates a slice of logs matching the given criteria.
func filterLogs(logs []types.Log, crit ethereum.FilterQuery, blockNum uint64, blockHash common.Hash) (
ret []types.Log, num uint64, hash common.Hash) {
num = blockNum
hash = blockHash
func filterLogs(logs []types.Log, crit ethereum.FilterQuery) (
ret []types.Log) {
for _, log := range logs {
// skip logs from seen blocks
// find highest block number that we didnt see before
if log.BlockNumber >= num {
num = log.BlockNumber
hash = log.BlockHash
}
if matchLog(log, crit, blockNum, blockHash) {
if matchLog(log, crit) {
ret = append(ret, log)
}
}
return
}
func matchLog(log types.Log, crit ethereum.FilterQuery, blockNum uint64, blockHash common.Hash) bool {
// skip logs from seen blocks
if log.BlockNumber < blockNum {
return false
} else if log.BlockNumber == blockNum && log.BlockHash == blockHash {
return false
}
func matchLog(log types.Log, crit ethereum.FilterQuery) bool {
if crit.FromBlock != nil && crit.FromBlock.Int64() >= 0 && crit.FromBlock.Uint64() > log.BlockNumber {
return false
}

127
services/rpcfilters/logs_filter_test.go
View File

@ -33,93 +33,90 @@ func TestFilterLogs(t *testing.T) {
}
type testCase struct {
description string
blockNum uint64
blockHash common.Hash
crit ethereum.FilterQuery
expectedLogs []types.Log
expectedBlock uint64
expectedHash common.Hash
description string
crit ethereum.FilterQuery
expectedLogs []types.Log
}
for _, tc := range []testCase{
{
description: "All",
crit: ethereum.FilterQuery{},
expectedLogs: []types.Log{logs[0], logs[1]},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
description: "All",
crit: ethereum.FilterQuery{},
expectedLogs: []types.Log{logs[0], logs[1]},
},
{
description: "LimitedByBlock",
crit: ethereum.FilterQuery{ToBlock: big.NewInt(1)},
expectedLogs: []types.Log{logs[0]},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
description: "LimitedByBlock",
crit: ethereum.FilterQuery{ToBlock: big.NewInt(1)},
expectedLogs: []types.Log{logs[0]},
},
{
description: "LimitedByAddress",
crit: ethereum.FilterQuery{Addresses: []common.Address{logs[1].Address}},
expectedLogs: []types.Log{logs[1]},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
description: "LimitedByAddress",
crit: ethereum.FilterQuery{Addresses: []common.Address{logs[1].Address}},
expectedLogs: []types.Log{logs[1]},
},
{
description: "LimitedByAddress",
crit: ethereum.FilterQuery{Addresses: []common.Address{logs[1].Address}},
expectedLogs: []types.Log{logs[1]},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
description: "LimitedByAddress",
crit: ethereum.FilterQuery{Addresses: []common.Address{logs[1].Address}},
expectedLogs: []types.Log{logs[1]},
},
{
description: "MoreTopicsThanInLogs",
crit: ethereum.FilterQuery{Topics: make([][]common.Hash, 3)},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
description: "MoreTopicsThanInLogs",
crit: ethereum.FilterQuery{Topics: make([][]common.Hash, 3)},
},
{
description: "Wildcard",
crit: ethereum.FilterQuery{Topics: make([][]common.Hash, 1)},
expectedLogs: []types.Log{logs[0], logs[1]},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
description: "Wildcard",
crit: ethereum.FilterQuery{Topics: make([][]common.Hash, 1)},
expectedLogs: []types.Log{logs[0], logs[1]},
},
{
description: "LimitedBySecondTopic",
crit: ethereum.FilterQuery{Topics: [][]common.Hash{
{}, logs[1].Topics}},
expectedLogs: []types.Log{logs[1]},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
},
{
blockNum: logs[1].BlockNumber,
blockHash: logs[1].BlockHash,
description: "LimitedBySeenBlock",
crit: ethereum.FilterQuery{},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
},
{
blockNum: logs[1].BlockNumber,
blockHash: common.Hash{7, 7, 7},
description: "SeenBlockDifferenthash",
crit: ethereum.FilterQuery{},
expectedLogs: []types.Log{logs[1]},
expectedBlock: logs[1].BlockNumber,
expectedHash: logs[1].BlockHash,
description: "LimitedBySecondTopic",
crit: ethereum.FilterQuery{Topics: [][]common.Hash{{}, logs[1].Topics}},
expectedLogs: []types.Log{logs[1]},
},
} {
tc := tc
t.Run(tc.description, func(t *testing.T) {
t.Parallel()
rst, num, hash := filterLogs(logs, tc.crit, tc.blockNum, tc.blockHash)
rst := filterLogs(logs, tc.crit)
require.Equal(t, tc.expectedLogs, rst)
require.Equal(t, tc.expectedBlock, num)
require.Equal(t, tc.expectedHash, hash)
})
}
}
func TestAdjustFromBlock(t *testing.T) {
type testCase struct {
description string
initial ethereum.FilterQuery
result ethereum.FilterQuery
}
for _, tc := range []testCase{
{
"ToBlockHigherThenLatest",
ethereum.FilterQuery{ToBlock: big.NewInt(10)},
ethereum.FilterQuery{ToBlock: big.NewInt(10)},
},
{
"FromBlockIsPending",
ethereum.FilterQuery{FromBlock: big.NewInt(-2)},
ethereum.FilterQuery{FromBlock: big.NewInt(-2)},
},
{
"FromBlockIsOlderThenLatest",
ethereum.FilterQuery{FromBlock: big.NewInt(10)},
ethereum.FilterQuery{FromBlock: big.NewInt(-1)},
},
{
"NotInterestedInLatestBlocks",
ethereum.FilterQuery{FromBlock: big.NewInt(10), ToBlock: big.NewInt(15)},
ethereum.FilterQuery{FromBlock: big.NewInt(10), ToBlock: big.NewInt(15)},
},
} {
tc := tc
t.Run(tc.description, func(t *testing.T) {
t.Parallel()
adjustFromBlock(&tc.initial)
require.Equal(t, tc.result, tc.initial)
})
}
}

3
services/rpcfilters/service.go
View File

@ -27,7 +27,8 @@ func New(rpc rpcProvider) *Service {
return &Service{
latestBlockChangedEvent: latestBlockChangedEvent,
transactionSentToUpstreamEvent: transactionSentToUpstreamEvent,
rpc: rpc,
rpc: rpc,
}
}