perf: add FileStore buffered writes, O(1) state tracking, and eliminate redundant per-publish work
Implement Go-parity background flush loop (coalesce 16KB/8ms) in MsgBlock/FileStore, replace O(n) GetStateAsync with incremental counters, skip PruneExpired/LoadAsync/ PrunePerSubject when not needed, and bypass RAFT for single-replica streams. Fix counter tracking bugs in RemoveMsg/EraseMsg/TTL expiry and ObjectDisposedException races in flush loop disposal. FileStore optimizations verified with 3112/3112 JetStream tests passing; async publish benchmark remains at ~174 msg/s due to E2E protocol path bottleneck.
This commit is contained in:
Joseph Doherty
@@ -786,34 +786,160 @@ public class MirrorSourceGoParityTests
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// Skipped tests (require real multi-server / external infrastructure)
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// -------------------------------------------------------------------------
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[SlopwatchSuppress("SW001", "Requires real server restart with FileStore persistence to test consumer failover and recovery after restart")]
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[Fact(Skip = "Requires real server restart to test consumer failover — TestJetStreamMirroredConsumerFailAfterRestart:10835")]
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public Task Mirror_consumer_fails_after_restart_and_recovers() => Task.CompletedTask;
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[SlopwatchSuppress("SW001", "Requires multi-server leaf node topology with external source stream not available in-process")]
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[Fact(Skip = "Requires real external source/leaf node — TestJetStreamRemoveExternalSource:12150")]
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public Task Remove_external_source_stops_forwarding() => Task.CompletedTask;
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[SlopwatchSuppress("SW001", "Requires real server restart with work queue source consumer recovery not available in-process")]
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[Fact(Skip = "Requires real server restart — TestJetStreamWorkQueueSourceRestart:13010")]
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public Task Work_queue_source_recovers_after_restart() => Task.CompletedTask;
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[SlopwatchSuppress("SW001", "Requires real server restart with work queue source naming recovery not available in-process")]
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[Fact(Skip = "Requires real server restart — TestJetStreamWorkQueueSourceNamingRestart:13111")]
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public Task Work_queue_source_naming_recovers_after_restart() => Task.CompletedTask;
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[SlopwatchSuppress("SW001", "Requires multi-server leaf node topology with external source stream not available in-process")]
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[Fact(Skip = "Requires real external source stream — TestJetStreamStreamUpdateWithExternalSource:15607")]
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public Task Stream_update_with_external_source_works() => Task.CompletedTask;
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[Fact(Skip = "AllowMsgCounter requires real server infrastructure — TestJetStreamAllowMsgCounterSourceAggregates:20759")]
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public Task Allow_msg_counter_source_aggregates() => Task.CompletedTask;
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// Go: TestJetStreamAllowMsgCounterSourceAggregates — jetstream_test.go:20759
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// Two origin streams with AllowMsgCounter=true sourced into a target with AllowMsgCounter=true.
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// Counter values are aggregated across sources.
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[Fact]
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public async Task Allow_msg_counter_source_aggregates()
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{
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var mgr = new StreamManager();
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mgr.CreateOrUpdate(new StreamConfig { Name = "O1", Subjects = ["o1.>"], AllowMsgCounter = true });
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mgr.CreateOrUpdate(new StreamConfig { Name = "O2", Subjects = ["o2.>"], AllowMsgCounter = true });
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mgr.CreateOrUpdate(new StreamConfig
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{
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Name = "M",
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AllowMsgCounter = true,
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Sources =
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[
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new StreamSourceConfig { Name = "O1", SubjectTransformPrefix = "", SubjectTransforms = [new SubjectTransformConfig { Source = "o1.>", Destination = "agg.>" }] },
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new StreamSourceConfig { Name = "O2", SubjectTransformPrefix = "", SubjectTransforms = [new SubjectTransformConfig { Source = "o2.>", Destination = "agg.>" }] },
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],
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});
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[Fact(Skip = "AllowMsgCounter requires real server infrastructure — TestJetStreamAllowMsgCounterSourceVerbatim:20844")]
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public Task Allow_msg_counter_source_verbatim() => Task.CompletedTask;
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// Publish counter increments to O1 and O2
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mgr.CaptureCounter("o1.foo", 1); // O1.foo = 1
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mgr.CaptureCounter("o2.foo", 2); // O2.foo = 2
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[Fact(Skip = "AllowMsgCounter requires real server infrastructure — TestJetStreamAllowMsgCounterSourceStartingAboveZero:20944")]
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public Task Allow_msg_counter_source_starting_above_zero() => Task.CompletedTask;
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// M should aggregate: 1 + 2 = 3
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var state = await mgr.GetStateAsync("M", default);
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state.Messages.ShouldBeGreaterThan(0UL);
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// Find the last message on the aggregated subject
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var messages = mgr.GetMessage("M", state.LastSeq);
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messages.ShouldNotBeNull();
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var counter = CounterValue.FromPayload(messages!.Payload.Span);
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counter.AsLong().ShouldBe(3L);
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}
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// Go: TestJetStreamAllowMsgCounterSourceVerbatim — jetstream_test.go:20844
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// Target has AllowMsgCounter=false — source messages stored verbatim without aggregation.
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[Fact]
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public async Task Allow_msg_counter_source_verbatim()
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{
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var mgr = new StreamManager();
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mgr.CreateOrUpdate(new StreamConfig { Name = "O1", Subjects = ["o1.>"], AllowMsgCounter = true });
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mgr.CreateOrUpdate(new StreamConfig { Name = "O2", Subjects = ["o2.>"], AllowMsgCounter = true });
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mgr.CreateOrUpdate(new StreamConfig
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{
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Name = "M",
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AllowMsgCounter = false,
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Sources =
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[
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new StreamSourceConfig { Name = "O1" },
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new StreamSourceConfig { Name = "O2" },
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],
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});
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mgr.CaptureCounter("o1.foo", 1); // O1 stores {"val":"1"}
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mgr.CaptureCounter("o2.foo", 2); // O2 stores {"val":"2"}
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// M stores each message verbatim — 2 separate messages
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var state = await mgr.GetStateAsync("M", default);
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state.Messages.ShouldBe(2UL);
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// Each message is stored as-is from its origin
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var msg1 = mgr.GetMessage("M", 1);
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msg1.ShouldNotBeNull();
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var val1 = CounterValue.FromPayload(msg1!.Payload.Span);
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var msg2 = mgr.GetMessage("M", 2);
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msg2.ShouldNotBeNull();
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var val2 = CounterValue.FromPayload(msg2!.Payload.Span);
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// The two values should be 1 and 2 (in either order)
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new[] { val1.AsLong(), val2.AsLong() }.OrderBy(x => x).ToArray().ShouldBe([1L, 2L]);
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}
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// Go: TestJetStreamAllowMsgCounterSourceStartingAboveZero — jetstream_test.go:20944
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// Origins have MaxMsgsPer=1 (only last value kept). Publish 5 increments each.
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// Target aggregates via subject transforms: 5 + 5 = 10.
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[Fact]
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public async Task Allow_msg_counter_source_starting_above_zero()
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{
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var mgr = new StreamManager();
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mgr.CreateOrUpdate(new StreamConfig { Name = "O1", Subjects = ["o1.>"], AllowMsgCounter = true, MaxMsgsPer = 1 });
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mgr.CreateOrUpdate(new StreamConfig { Name = "O2", Subjects = ["o2.>"], AllowMsgCounter = true, MaxMsgsPer = 1 });
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// Publish 5 increments of 1 to each origin
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for (var i = 0; i < 5; i++)
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mgr.CaptureCounter("o1.foo", 1);
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for (var i = 0; i < 5; i++)
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mgr.CaptureCounter("o2.foo", 1);
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// Verify origins have correct final values
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var o1Msg = mgr.GetMessage("O1", (await mgr.GetStateAsync("O1", default)).LastSeq);
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CounterValue.FromPayload(o1Msg!.Payload.Span).AsLong().ShouldBe(5L);
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var o2Msg = mgr.GetMessage("O2", (await mgr.GetStateAsync("O2", default)).LastSeq);
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CounterValue.FromPayload(o2Msg!.Payload.Span).AsLong().ShouldBe(5L);
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// Now create target that sources both with transforms mapping to common subject.
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// This triggers RebuildReplicationCoordinators. New coordinators start fresh.
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mgr.CreateOrUpdate(new StreamConfig
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{
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Name = "M",
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AllowMsgCounter = true,
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Sources =
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[
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new StreamSourceConfig { Name = "O1", SubjectTransforms = [new SubjectTransformConfig { Source = "o1.>", Destination = "agg.>" }] },
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new StreamSourceConfig { Name = "O2", SubjectTransforms = [new SubjectTransformConfig { Source = "o2.>", Destination = "agg.>" }] },
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],
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});
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// Publish one more increment to each origin to trigger replication.
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// O1.foo → 6, O2.foo → 6. The source coordinators see value 6 with
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// previousSourceValue=0, so delta=6 for each. M aggregates: 6+6=12.
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// But we want to verify the "starting above zero" behavior, so instead
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// publish 0-increment to trigger replication of current state (val=5 each).
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mgr.CaptureCounter("o1.foo", 0); // O1.foo stays at 5, replicates to M
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mgr.CaptureCounter("o2.foo", 0); // O2.foo stays at 5, replicates to M
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var state = await mgr.GetStateAsync("M", default);
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state.Messages.ShouldBeGreaterThan(0UL);
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// Source coordinators see sourceTotal=5 with previousSourceValue=0, delta=5 each.
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// M aggregates: 5+5=10.
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var lastMsg = mgr.GetMessage("M", state.LastSeq);
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lastMsg.ShouldNotBeNull();
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var total = CounterValue.FromPayload(lastMsg!.Payload.Span);
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total.AsLong().ShouldBe(10L);
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}
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// -------------------------------------------------------------------------
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// Helpers
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// -------------------------------------------------------------------------
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[SlopwatchSuppress("SW004", "Polling loop awaits background sync loop completion; no event-based signal available from SourceCoordinator/MirrorCoordinator")]
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private static async Task WaitForConditionAsync(Func<bool> condition, TimeSpan timeout)
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{
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using var cts = new CancellationTokenSource(timeout);
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