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e80dd00894
* Performance improvements for the event query API (#7319) Rework the implementation of event query parsing and execution to improve performance and reduce memory usage. Previous memory and CPU profiles of the pubsub service showed query processing as a significant hotspot. While we don't have evidence that this is visibly hurting users, fixing it is fairly easy and self-contained. Updates #6439. Typical benchmark results comparing the original implementation (PEG) with the reworked implementation (Custom): ``` TEST TIME/OP BYTES/OP ALLOCS/OP SPEEDUP MEM SAVING BenchmarkParsePEG-12 51716 ns 526832 27 BenchmarkParseCustom-12 2167 ns 4616 17 23.8x 99.1% BenchmarkMatchPEG-12 3086 ns 1097 22 BenchmarkMatchCustom-12 294.2 ns 64 3 10.5x 94.1% ```
33 lines
792 B
Go
33 lines
792 B
Go
package pubsub_test
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/libs/pubsub"
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"github.com/tendermint/tendermint/libs/pubsub/query"
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)
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func TestExample(t *testing.T) {
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s := pubsub.NewServer()
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s.SetLogger(log.TestingLogger())
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err := s.Start()
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require.NoError(t, err)
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t.Cleanup(func() {
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if err := s.Stop(); err != nil {
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t.Error(err)
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}
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})
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ctx := context.Background()
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subscription, err := s.Subscribe(ctx, "example-client", query.MustCompile("abci.account.name='John'"))
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require.NoError(t, err)
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err = s.PublishWithEvents(ctx, "Tombstone", map[string][]string{"abci.account.name": {"John"}})
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require.NoError(t, err)
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assertReceive(t, "Tombstone", subscription.Out())
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}
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