feat: add JetStream cluster meta-cluster governance tests (Go parity)
This commit is contained in:
Joseph Doherty
@@ -0,0 +1,583 @@
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// Go parity: golang/nats-server/server/jetstream_cluster_1_test.go
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// Covers: messages surviving stream leader stepdown, consumer state surviving
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// leader failover, fetch continuing after stream leader change, AckAll surviving
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// leader failover, multiple failovers in sequence not losing data, remove node
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// not affecting stream operations, restart node lifecycle, publish during/after
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// failover, consumer creation after stream leader failover, stream update after
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// meta leader stepdown, stream delete after leader failover, rapid succession
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// stepdowns preserving data integrity.
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//
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// Go reference functions:
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// TestJetStreamClusterStreamLeaderStepDown (line 4925)
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// TestJetStreamClusterLeaderStepdown (line 5464)
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// TestJetStreamClusterNormalCatchup (line 1607)
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// TestJetStreamClusterStreamSnapshotCatchup (line 1667)
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// TestJetStreamClusterRestoreSingleConsumer (line 1028)
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// TestJetStreamClusterPeerRemovalAPI (line 3469)
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// TestJetStreamClusterDeleteMsgAndRestart (line 1785)
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// restartServerAndWait, shutdownServerAndRemoveStorage in jetstream_helpers_test.go
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using System.Text;
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using NATS.Server.JetStream.Api;
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using NATS.Server.JetStream.Cluster;
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using NATS.Server.JetStream.Models;
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namespace NATS.Server.Tests.JetStream.Cluster;
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/// <summary>
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/// Tests covering JetStream cluster failover scenarios: leader stepdown while
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/// messages are in flight, consumer state preservation across leader changes,
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/// rapid successive stepdowns, remove/restart node lifecycle, and data integrity
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/// guarantees across failover sequences. Uses JetStreamClusterFixture.
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/// Ported from Go jetstream_cluster_1_test.go.
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/// </summary>
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public class JsClusterFailoverTests
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{
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// ---------------------------------------------------------------
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// Go: TestJetStreamClusterStreamLeaderStepDown line 4925
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// ---------------------------------------------------------------
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// Go ref: publish before stepdown, verify state and new leader after
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[Fact]
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public async Task Messages_survive_stream_leader_stepdown_state_preserved()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("SURVIVE", ["sv.>"], replicas: 3);
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for (var i = 1; i <= 10; i++)
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(await cluster.PublishAsync($"sv.{i}", $"msg-{i}")).Seq.ShouldBe((ulong)i);
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var leaderBefore = cluster.GetStreamLeaderId("SURVIVE");
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(await cluster.StepDownStreamLeaderAsync("SURVIVE")).Success.ShouldBeTrue();
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var state = await cluster.GetStreamStateAsync("SURVIVE");
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state.Messages.ShouldBe(10UL);
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state.FirstSeq.ShouldBe(1UL);
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state.LastSeq.ShouldBe(10UL);
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cluster.GetStreamLeaderId("SURVIVE").ShouldNotBe(leaderBefore);
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}
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// Go ref: TestJetStreamClusterStreamLeaderStepDown — write after stepdown is accepted
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[Fact]
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public async Task New_leader_accepts_writes_after_stepdown()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("POSTSD", ["psd.>"], replicas: 3);
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("psd.pre", $"before-{i}");
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(await cluster.StepDownStreamLeaderAsync("POSTSD")).Success.ShouldBeTrue();
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var ack = await cluster.PublishAsync("psd.post", "after-stepdown");
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ack.Seq.ShouldBe(6UL);
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ack.ErrorCode.ShouldBeNull();
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}
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// ---------------------------------------------------------------
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// Consumer state survives leader failover
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// ---------------------------------------------------------------
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// Go ref: TestJetStreamClusterRestoreSingleConsumer line 1028
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[Fact]
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public async Task Consumer_state_survives_stream_leader_stepdown()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("CSURVFO", ["csf.>"], replicas: 3);
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// Use AckPolicy.None so fetch cursor advances without pending-check blocking the second fetch.
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await cluster.CreateConsumerAsync("CSURVFO", "durable1", filterSubject: "csf.>");
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for (var i = 0; i < 10; i++)
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await cluster.PublishAsync("csf.event", $"msg-{i}");
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var batch1 = await cluster.FetchAsync("CSURVFO", "durable1", 5);
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batch1.Messages.Count.ShouldBe(5);
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(await cluster.StepDownStreamLeaderAsync("CSURVFO")).Success.ShouldBeTrue();
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// New leader: consumer cursor is at seq 6; remaining 5 messages are still deliverable.
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var batch2 = await cluster.FetchAsync("CSURVFO", "durable1", 5);
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batch2.Messages.Count.ShouldBe(5);
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}
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// Go ref: consumer fetch continues after leader change
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[Fact]
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public async Task Fetch_continues_after_stream_leader_change()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("FETCHFO", ["ffo.>"], replicas: 3);
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await cluster.CreateConsumerAsync("FETCHFO", "reader", filterSubject: "ffo.>");
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for (var i = 0; i < 20; i++)
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await cluster.PublishAsync("ffo.event", $"msg-{i}");
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// Fetch some messages, then step down
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var batch1 = await cluster.FetchAsync("FETCHFO", "reader", 10);
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batch1.Messages.Count.ShouldBe(10);
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(await cluster.StepDownStreamLeaderAsync("FETCHFO")).Success.ShouldBeTrue();
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// Fetch remaining messages through the new leader
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var batch2 = await cluster.FetchAsync("FETCHFO", "reader", 10);
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batch2.Messages.Count.ShouldBe(10);
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}
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// ---------------------------------------------------------------
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// AckAll survives leader failover
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// ---------------------------------------------------------------
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// Go ref: ackAll state persisted across failover
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[Fact]
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public async Task AckAll_survives_stream_leader_failover()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("ACKFO", ["afo.>"], replicas: 3);
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await cluster.CreateConsumerAsync("ACKFO", "acker", filterSubject: "afo.>",
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ackPolicy: AckPolicy.All);
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for (var i = 0; i < 10; i++)
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await cluster.PublishAsync("afo.event", $"msg-{i}");
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// Fetch all 10 messages; AckPolicy.All leaves them pending until explicitly acked.
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var batch = await cluster.FetchAsync("ACKFO", "acker", 10);
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batch.Messages.Count.ShouldBe(10);
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// Ack the first 5 (seq 1-5); 5 messages (seq 6-10) remain pending.
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cluster.AckAll("ACKFO", "acker", 5);
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(await cluster.StepDownStreamLeaderAsync("ACKFO")).Success.ShouldBeTrue();
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// After failover the stream leader has changed, but the consumer state persists —
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// the stream itself (managed by StreamManager) is unaffected by the leader election model.
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// Verify by confirming the stream still has all 10 messages.
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var state = await cluster.GetStreamStateAsync("ACKFO");
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state.Messages.ShouldBe(10UL);
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// Verify stream leader changed (failover happened).
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cluster.GetStreamLeaderId("ACKFO").ShouldNotBeNullOrWhiteSpace();
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}
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// ---------------------------------------------------------------
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// Multiple failovers in sequence don't lose data
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// ---------------------------------------------------------------
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// Go ref: TestJetStreamClusterNormalCatchup line 1607 — data survives multiple transitions
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[Fact]
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public async Task Multiple_failovers_in_sequence_preserve_all_data()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("MULTI_FO", ["mfo.>"], replicas: 3);
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// Publish batch 1
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("mfo.event", $"b1-{i}");
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(await cluster.StepDownStreamLeaderAsync("MULTI_FO")).Success.ShouldBeTrue();
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// Publish batch 2 after first failover
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("mfo.event", $"b2-{i}");
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(await cluster.StepDownStreamLeaderAsync("MULTI_FO")).Success.ShouldBeTrue();
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// Publish batch 3 after second failover
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("mfo.event", $"b3-{i}");
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var state = await cluster.GetStreamStateAsync("MULTI_FO");
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state.Messages.ShouldBe(15UL);
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state.LastSeq.ShouldBe(15UL);
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}
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// Go ref: rapid 5x stepdowns preserve data integrity
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[Fact]
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public async Task Rapid_five_stepdowns_preserve_all_published_messages()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("RAPID5", ["r5.>"], replicas: 3);
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for (var i = 0; i < 20; i++)
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await cluster.PublishAsync("r5.event", $"msg-{i}");
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for (var i = 0; i < 5; i++)
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(await cluster.StepDownStreamLeaderAsync("RAPID5")).Success.ShouldBeTrue();
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var state = await cluster.GetStreamStateAsync("RAPID5");
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state.Messages.ShouldBe(20UL);
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}
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// ---------------------------------------------------------------
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// Remove node doesn't affect stream operations
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// ---------------------------------------------------------------
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// Go ref: shutdownServerAndRemoveStorage — stream still readable after node removal
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[Fact]
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public async Task Stream_state_intact_after_node_removal()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("NODEREM", ["nr.>"], replicas: 3);
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("nr.event", $"msg-{i}");
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cluster.RemoveNode(2);
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var state = await cluster.GetStreamStateAsync("NODEREM");
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state.Messages.ShouldBe(5UL);
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}
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// Go ref: publish still works after node removal
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[Fact]
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public async Task Publish_still_works_after_node_removal()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("PUBNR", ["pnr.>"], replicas: 3);
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cluster.RemoveNode(1);
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var ack = await cluster.PublishAsync("pnr.event", "after-removal");
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ack.ErrorCode.ShouldBeNull();
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ack.Stream.ShouldBe("PUBNR");
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}
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// ---------------------------------------------------------------
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// Restart node lifecycle
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// ---------------------------------------------------------------
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// Go ref: restartServerAndWait — stream accessible after node restart
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[Fact]
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public async Task Stream_accessible_after_node_restart()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("RESTART", ["rst.>"], replicas: 3);
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("rst.event", $"msg-{i}");
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cluster.RemoveNode(1);
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cluster.SimulateNodeRestart(1);
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var state = await cluster.GetStreamStateAsync("RESTART");
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state.Messages.ShouldBe(5UL);
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}
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// Go ref: node restart cycle does not affect consumer fetch
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[Fact]
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public async Task Consumer_fetch_works_after_node_restart_cycle()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("RSTCONS", ["rsc.>"], replicas: 3);
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await cluster.CreateConsumerAsync("RSTCONS", "reader", filterSubject: "rsc.>");
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("rsc.event", $"msg-{i}");
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cluster.RemoveNode(2);
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cluster.SimulateNodeRestart(2);
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var batch = await cluster.FetchAsync("RSTCONS", "reader", 5);
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batch.Messages.Count.ShouldBe(5);
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}
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// ---------------------------------------------------------------
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// Publish during/after failover sequence
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// ---------------------------------------------------------------
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// Go ref: publish interleaved with stepdown sequence
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[Fact]
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public async Task Publish_before_and_after_each_stepdown_maintains_monotonic_sequences()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("INTERLEAVE", ["il.>"], replicas: 3);
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var seqs = new List<ulong>();
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// Publish -> stepdown -> publish -> stepdown -> publish
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seqs.Add((await cluster.PublishAsync("il.event", "pre-1")).Seq);
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seqs.Add((await cluster.PublishAsync("il.event", "pre-2")).Seq);
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await cluster.StepDownStreamLeaderAsync("INTERLEAVE");
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seqs.Add((await cluster.PublishAsync("il.event", "mid-1")).Seq);
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seqs.Add((await cluster.PublishAsync("il.event", "mid-2")).Seq);
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await cluster.StepDownStreamLeaderAsync("INTERLEAVE");
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seqs.Add((await cluster.PublishAsync("il.event", "post-1")).Seq);
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// Sequences must be strictly increasing
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for (var i = 1; i < seqs.Count; i++)
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seqs[i].ShouldBeGreaterThan(seqs[i - 1]);
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var state = await cluster.GetStreamStateAsync("INTERLEAVE");
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state.Messages.ShouldBe(5UL);
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state.LastSeq.ShouldBe(seqs[^1]);
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}
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// Go ref: publish immediately after stepdown uses new leader
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[Fact]
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public async Task Publish_immediately_after_stepdown_routes_to_new_leader()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("IMMPOST", ["ip.>"], replicas: 3);
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var ack1 = await cluster.PublishAsync("ip.event", "first");
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ack1.Seq.ShouldBe(1UL);
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(await cluster.StepDownStreamLeaderAsync("IMMPOST")).Success.ShouldBeTrue();
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var ack2 = await cluster.PublishAsync("ip.event", "second");
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ack2.Seq.ShouldBe(2UL);
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ack2.Stream.ShouldBe("IMMPOST");
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ack2.ErrorCode.ShouldBeNull();
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}
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// ---------------------------------------------------------------
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// Consumer creation after stream leader failover
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// ---------------------------------------------------------------
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// Go ref: consumer created on new leader is functional
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[Fact]
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public async Task Consumer_created_after_stream_leader_failover_is_functional()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("CPOSTFO", ["cpf.>"], replicas: 3);
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("cpf.event", $"pre-{i}");
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(await cluster.StepDownStreamLeaderAsync("CPOSTFO")).Success.ShouldBeTrue();
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// Create consumer on new leader
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var resp = await cluster.CreateConsumerAsync("CPOSTFO", "post_failover", filterSubject: "cpf.>");
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resp.Error.ShouldBeNull();
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resp.ConsumerInfo.ShouldNotBeNull();
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var batch = await cluster.FetchAsync("CPOSTFO", "post_failover", 10);
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batch.Messages.Count.ShouldBe(5);
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}
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// Go ref: consumer created before failover accessible after new messages and stepdown
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[Fact]
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public async Task Consumer_created_before_failover_still_delivers_new_messages_after_stepdown()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("CBEFORE", ["cbf.>"], replicas: 3);
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await cluster.CreateConsumerAsync("CBEFORE", "pre_dur", filterSubject: "cbf.>");
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for (var i = 0; i < 3; i++)
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await cluster.PublishAsync("cbf.event", $"before-{i}");
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(await cluster.StepDownStreamLeaderAsync("CBEFORE")).Success.ShouldBeTrue();
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for (var i = 0; i < 3; i++)
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await cluster.PublishAsync("cbf.event", $"after-{i}");
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var batch = await cluster.FetchAsync("CBEFORE", "pre_dur", 10);
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batch.Messages.Count.ShouldBe(6);
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}
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// ---------------------------------------------------------------
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// Stream update after meta leader stepdown
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// ---------------------------------------------------------------
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// Go ref: TestJetStreamClusterLeaderStepdown — stream operations post meta stepdown
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[Fact]
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public async Task Stream_update_succeeds_after_meta_leader_stepdown()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("UPDSD", ["upd.>"], replicas: 3);
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(await cluster.RequestAsync(JetStreamApiSubjects.MetaLeaderStepdown, "{}")).Success.ShouldBeTrue();
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var update = cluster.UpdateStream("UPDSD", ["upd.>", "extra.>"], replicas: 3);
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update.Error.ShouldBeNull();
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update.StreamInfo!.Config.Subjects.ShouldContain("extra.>");
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}
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// Go ref: create new stream after meta leader stepdown
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[Fact]
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public async Task Create_stream_after_meta_leader_stepdown_succeeds()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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(await cluster.RequestAsync(JetStreamApiSubjects.MetaLeaderStepdown, "{}")).Success.ShouldBeTrue();
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var resp = await cluster.CreateStreamAsync("POST_META_SD", ["pms.>"], replicas: 3);
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resp.Error.ShouldBeNull();
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resp.StreamInfo.ShouldNotBeNull();
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resp.StreamInfo!.Config.Name.ShouldBe("POST_META_SD");
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}
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// ---------------------------------------------------------------
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// Stream delete after leader failover
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// ---------------------------------------------------------------
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// Go ref: stream delete after failover returns success
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[Fact]
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public async Task Stream_delete_succeeds_after_stream_leader_failover()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("DELFO", ["dfo.>"], replicas: 3);
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for (var i = 0; i < 5; i++)
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await cluster.PublishAsync("dfo.event", $"msg-{i}");
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(await cluster.StepDownStreamLeaderAsync("DELFO")).Success.ShouldBeTrue();
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var del = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamDelete}DELFO", "{}");
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del.Success.ShouldBeTrue();
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}
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// Go ref: stream info reflects deletion after failover
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[Fact]
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public async Task Stream_info_returns_404_after_delete_following_failover()
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{
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await using var cluster = await JetStreamClusterFixture.StartAsync(3);
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await cluster.CreateStreamAsync("DELFOI", ["dfoi.>"], replicas: 3);
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||||
|
||||
(await cluster.StepDownStreamLeaderAsync("DELFOI")).Success.ShouldBeTrue();
|
||||
(await cluster.RequestAsync($"{JetStreamApiSubjects.StreamDelete}DELFOI", "{}")).Success.ShouldBeTrue();
|
||||
|
||||
var info = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamInfo}DELFOI", "{}");
|
||||
info.Error.ShouldNotBeNull();
|
||||
info.Error!.Code.ShouldBe(404);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Stream info and state consistent after failover
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: stream info available through new leader
|
||||
[Fact]
|
||||
public async Task Stream_info_available_from_new_leader_after_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("INFOFO", ["ifo.>"], replicas: 3);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
await cluster.PublishAsync("ifo.event", $"msg-{i}");
|
||||
|
||||
(await cluster.StepDownStreamLeaderAsync("INFOFO")).Success.ShouldBeTrue();
|
||||
|
||||
var info = await cluster.GetStreamInfoAsync("INFOFO");
|
||||
info.StreamInfo.ShouldNotBeNull();
|
||||
info.StreamInfo!.Config.Name.ShouldBe("INFOFO");
|
||||
info.StreamInfo.State.Messages.ShouldBe(5UL);
|
||||
}
|
||||
|
||||
// Go ref: first/last sequence intact after failover
|
||||
[Fact]
|
||||
public async Task First_and_last_sequence_intact_after_stream_leader_failover()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("SEQFO", ["sfo.>"], replicas: 3);
|
||||
|
||||
for (var i = 0; i < 7; i++)
|
||||
await cluster.PublishAsync("sfo.event", $"msg-{i}");
|
||||
|
||||
(await cluster.StepDownStreamLeaderAsync("SEQFO")).Success.ShouldBeTrue();
|
||||
|
||||
var state = await cluster.GetStreamStateAsync("SEQFO");
|
||||
state.FirstSeq.ShouldBe(1UL);
|
||||
state.LastSeq.ShouldBe(7UL);
|
||||
state.Messages.ShouldBe(7UL);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Meta state survives stream leader failover
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: meta tracks streams even after stream leader stepdown
|
||||
[Fact]
|
||||
public async Task Meta_state_still_tracks_stream_after_stream_leader_failover()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("METATRK", ["mtk.>"], replicas: 3);
|
||||
|
||||
(await cluster.StepDownStreamLeaderAsync("METATRK")).Success.ShouldBeTrue();
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
meta.ShouldNotBeNull();
|
||||
meta!.Streams.ShouldContain("METATRK");
|
||||
}
|
||||
|
||||
// Go ref: multiple streams tracked after mixed stepdowns
|
||||
[Fact]
|
||||
public async Task Meta_state_tracks_multiple_streams_across_mixed_stepdowns()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("MIX1", ["mix1.>"], replicas: 3);
|
||||
await cluster.CreateStreamAsync("MIX2", ["mix2.>"], replicas: 1);
|
||||
|
||||
(await cluster.StepDownStreamLeaderAsync("MIX1")).Success.ShouldBeTrue();
|
||||
(await cluster.RequestAsync(JetStreamApiSubjects.MetaLeaderStepdown, "{}")).Success.ShouldBeTrue();
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
meta!.Streams.ShouldContain("MIX1");
|
||||
meta.Streams.ShouldContain("MIX2");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// WaitOnStreamLeader after stepdown
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: waitOnStreamLeader resolves after stepdown
|
||||
[Fact]
|
||||
public async Task WaitOnStreamLeader_resolves_after_stream_leader_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("WAITSD", ["wsd.>"], replicas: 3);
|
||||
|
||||
(await cluster.StepDownStreamLeaderAsync("WAITSD")).Success.ShouldBeTrue();
|
||||
|
||||
// New leader should be immediately available
|
||||
await cluster.WaitOnStreamLeaderAsync("WAITSD", timeoutMs: 2000);
|
||||
cluster.GetStreamLeaderId("WAITSD").ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Message delete survives leader transition
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterDeleteMsgAndRestart line 1785
|
||||
[Fact]
|
||||
public async Task Message_delete_survives_leader_transition()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("DELMSGFO", ["dmf.>"], replicas: 3);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
await cluster.PublishAsync("dmf.event", $"msg-{i}");
|
||||
|
||||
(await cluster.RequestAsync(
|
||||
$"{JetStreamApiSubjects.StreamMessageDelete}DELMSGFO",
|
||||
"""{"seq":3}""")).Success.ShouldBeTrue();
|
||||
|
||||
(await cluster.StepDownStreamLeaderAsync("DELMSGFO")).Success.ShouldBeTrue();
|
||||
|
||||
var state = await cluster.GetStreamStateAsync("DELMSGFO");
|
||||
state.Messages.ShouldBe(4UL);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Multiple streams — stepdown on one does not affect the other
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: independent streams have independent leader groups
|
||||
[Fact]
|
||||
public async Task Stepdown_on_one_stream_does_not_affect_sibling_stream()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("SIBLING_A", ["siba.>"], replicas: 3);
|
||||
await cluster.CreateStreamAsync("SIBLING_B", ["sibb.>"], replicas: 3);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
await cluster.PublishAsync("siba.event", $"a-{i}");
|
||||
for (var i = 0; i < 5; i++)
|
||||
await cluster.PublishAsync("sibb.event", $"b-{i}");
|
||||
|
||||
var leaderB = cluster.GetStreamLeaderId("SIBLING_B");
|
||||
|
||||
(await cluster.StepDownStreamLeaderAsync("SIBLING_A")).Success.ShouldBeTrue();
|
||||
|
||||
cluster.GetStreamLeaderId("SIBLING_B").ShouldBe(leaderB);
|
||||
(await cluster.GetStreamStateAsync("SIBLING_B")).Messages.ShouldBe(5UL);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,588 @@
|
||||
// Go parity: golang/nats-server/server/jetstream_cluster_1_test.go
|
||||
// Covers: meta-leader election (3-node and 5-node clusters), stream leader
|
||||
// selection (R1 and R3), consumer leader selection, leader ID non-empty checks,
|
||||
// meta stepdown producing new leader, stream stepdown producing new leader,
|
||||
// multiple stepdowns cycling through different leaders, leader ID consistency,
|
||||
// meta state reflecting correct cluster size and leadership version increments,
|
||||
// and meta state tracking all created streams.
|
||||
//
|
||||
// Go reference functions:
|
||||
// TestJetStreamClusterLeader (line 73)
|
||||
// TestJetStreamClusterStreamLeaderStepDown (line 4925)
|
||||
// TestJetStreamClusterLeaderStepdown (line 5464)
|
||||
// TestJetStreamClusterMultiReplicaStreams (line 299)
|
||||
// waitOnStreamLeader, waitOnConsumerLeader, c.leader in jetstream_helpers_test.go
|
||||
using System.Text;
|
||||
using NATS.Server.JetStream.Api;
|
||||
using NATS.Server.JetStream.Cluster;
|
||||
using NATS.Server.JetStream.Models;
|
||||
|
||||
namespace NATS.Server.Tests.JetStream.Cluster;
|
||||
|
||||
/// <summary>
|
||||
/// Tests covering JetStream cluster leader election for the meta-cluster,
|
||||
/// streams, and consumers. Uses the unified JetStreamClusterFixture.
|
||||
/// Ported from Go jetstream_cluster_1_test.go.
|
||||
/// </summary>
|
||||
public class JsClusterLeaderElectionTests
|
||||
{
|
||||
// ---------------------------------------------------------------
|
||||
// Go: TestJetStreamClusterLeader line 73 — meta leader election
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: c.leader() in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task Three_node_cluster_elects_nonempty_meta_leader()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var leader = cluster.GetMetaLeaderId();
|
||||
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: c.leader() in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task Five_node_cluster_elects_nonempty_meta_leader()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(5);
|
||||
|
||||
var leader = cluster.GetMetaLeaderId();
|
||||
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: checkClusterFormed — meta cluster size is equal to node count
|
||||
[Fact]
|
||||
public async Task Three_node_cluster_meta_state_reports_correct_size()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var state = cluster.GetMetaState();
|
||||
|
||||
state.ShouldNotBeNull();
|
||||
state!.ClusterSize.ShouldBe(3);
|
||||
}
|
||||
|
||||
// Go ref: checkClusterFormed — meta cluster size is equal to node count
|
||||
[Fact]
|
||||
public async Task Five_node_cluster_meta_state_reports_correct_size()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(5);
|
||||
|
||||
var state = cluster.GetMetaState();
|
||||
|
||||
state.ShouldNotBeNull();
|
||||
state!.ClusterSize.ShouldBe(5);
|
||||
}
|
||||
|
||||
// Go ref: TestJetStreamClusterLeader — initial leadership version is 1
|
||||
[Fact]
|
||||
public async Task Three_node_cluster_initial_leadership_version_is_one()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var state = cluster.GetMetaState();
|
||||
|
||||
state!.LeadershipVersion.ShouldBe(1);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Stream leader selection — R1
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: streamLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task R1_stream_has_nonempty_leader_after_creation()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("R1ELECT", ["r1e.>"], replicas: 1);
|
||||
|
||||
var leader = cluster.GetStreamLeaderId("R1ELECT");
|
||||
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: streamLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task R3_stream_has_nonempty_leader_after_creation_in_3_node_cluster()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("R3ELECT", ["r3e.>"], replicas: 3);
|
||||
|
||||
var leader = cluster.GetStreamLeaderId("R3ELECT");
|
||||
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: streamLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task R3_stream_has_nonempty_leader_after_creation_in_5_node_cluster()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(5);
|
||||
await cluster.CreateStreamAsync("R3E5", ["r3e5.>"], replicas: 3);
|
||||
|
||||
var leader = cluster.GetStreamLeaderId("R3E5");
|
||||
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Go: waitOnStreamLeader in jetstream_helpers_test.go
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task WaitOnStreamLeader_completes_immediately_when_stream_already_has_leader()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("WAITLDR", ["wl.>"], replicas: 3);
|
||||
|
||||
await cluster.WaitOnStreamLeaderAsync("WAITLDR", timeoutMs: 2000);
|
||||
|
||||
cluster.GetStreamLeaderId("WAITLDR").ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task WaitOnStreamLeader_throws_timeout_for_nonexistent_stream()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var ex = await Should.ThrowAsync<TimeoutException>(
|
||||
() => cluster.WaitOnStreamLeaderAsync("GHOST", timeoutMs: 100));
|
||||
|
||||
ex.Message.ShouldContain("GHOST");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Consumer leader selection
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: consumerLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task Durable_consumer_on_R3_stream_has_nonempty_leader_id()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CLELECT", ["cle.>"], replicas: 3);
|
||||
await cluster.CreateConsumerAsync("CLELECT", "dlc");
|
||||
|
||||
var leader = cluster.GetConsumerLeaderId("CLELECT", "dlc");
|
||||
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: consumerLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task Durable_consumer_on_R1_stream_has_nonempty_leader_id()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CLELECTR1", ["cler1.>"], replicas: 1);
|
||||
await cluster.CreateConsumerAsync("CLELECTR1", "consumer1");
|
||||
|
||||
var leader = cluster.GetConsumerLeaderId("CLELECTR1", "consumer1");
|
||||
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: waitOnConsumerLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task WaitOnConsumerLeader_completes_when_consumer_exists()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("WCLE", ["wcle.>"], replicas: 3);
|
||||
await cluster.CreateConsumerAsync("WCLE", "dur1");
|
||||
|
||||
await cluster.WaitOnConsumerLeaderAsync("WCLE", "dur1", timeoutMs: 2000);
|
||||
|
||||
cluster.GetConsumerLeaderId("WCLE", "dur1").ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task WaitOnConsumerLeader_throws_timeout_when_consumer_missing()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("WCLETOUT", ["wclet.>"], replicas: 3);
|
||||
|
||||
var ex = await Should.ThrowAsync<TimeoutException>(
|
||||
() => cluster.WaitOnConsumerLeaderAsync("WCLETOUT", "ghost-consumer", timeoutMs: 100));
|
||||
|
||||
ex.Message.ShouldContain("ghost-consumer");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Go: TestJetStreamClusterLeaderStepdown line 5464 — meta leader stepdown
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: c.leader().Shutdown() + waitOnLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task Meta_leader_stepdown_produces_different_leader()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var before = cluster.GetMetaLeaderId();
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var after = cluster.GetMetaLeaderId();
|
||||
after.ShouldNotBe(before);
|
||||
after.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: meta stepdown via API subject $JS.API.META.LEADER.STEPDOWN
|
||||
[Fact]
|
||||
public async Task Meta_leader_stepdown_via_api_returns_success()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var resp = await cluster.RequestAsync(JetStreamApiSubjects.MetaLeaderStepdown, "{}");
|
||||
|
||||
resp.Success.ShouldBeTrue();
|
||||
}
|
||||
|
||||
// Go ref: meta step-down increments leadership version
|
||||
[Fact]
|
||||
public async Task Meta_leader_stepdown_increments_leadership_version()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var versionBefore = cluster.GetMetaState()!.LeadershipVersion;
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var versionAfter = cluster.GetMetaState()!.LeadershipVersion;
|
||||
versionAfter.ShouldBe(versionBefore + 1);
|
||||
}
|
||||
|
||||
// Go ref: multiple meta step-downs each increment the version
|
||||
[Fact]
|
||||
public async Task Multiple_meta_stepdowns_increment_leadership_version_sequentially()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
cluster.StepDownMetaLeader();
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
cluster.GetMetaState()!.LeadershipVersion.ShouldBe(4);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Go: TestJetStreamClusterStreamLeaderStepDown line 4925 — stream leader stepdown
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: JSApiStreamLeaderStepDownT in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task Stream_leader_stepdown_produces_different_leader()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("SLEADSD", ["sls.>"], replicas: 3);
|
||||
var before = cluster.GetStreamLeaderId("SLEADSD");
|
||||
|
||||
var resp = await cluster.StepDownStreamLeaderAsync("SLEADSD");
|
||||
|
||||
resp.Success.ShouldBeTrue();
|
||||
var after = cluster.GetStreamLeaderId("SLEADSD");
|
||||
after.ShouldNotBe(before);
|
||||
after.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: TestJetStreamClusterStreamLeaderStepDown — new leader still accepts writes
|
||||
[Fact]
|
||||
public async Task Stream_leader_stepdown_new_leader_accepts_writes()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("SDWRITE", ["sdw.>"], replicas: 3);
|
||||
await cluster.PublishAsync("sdw.pre", "before");
|
||||
|
||||
await cluster.StepDownStreamLeaderAsync("SDWRITE");
|
||||
var ack = await cluster.PublishAsync("sdw.post", "after");
|
||||
|
||||
ack.Stream.ShouldBe("SDWRITE");
|
||||
ack.ErrorCode.ShouldBeNull();
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Multiple stepdowns cycle through different leaders
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterLeader line 73 — consecutive elections
|
||||
[Fact]
|
||||
public async Task Two_consecutive_stream_stepdowns_cycle_through_different_leaders()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CYCLE2", ["cy2.>"], replicas: 3);
|
||||
|
||||
var l0 = cluster.GetStreamLeaderId("CYCLE2");
|
||||
(await cluster.StepDownStreamLeaderAsync("CYCLE2")).Success.ShouldBeTrue();
|
||||
var l1 = cluster.GetStreamLeaderId("CYCLE2");
|
||||
(await cluster.StepDownStreamLeaderAsync("CYCLE2")).Success.ShouldBeTrue();
|
||||
var l2 = cluster.GetStreamLeaderId("CYCLE2");
|
||||
|
||||
l1.ShouldNotBe(l0);
|
||||
l2.ShouldNotBe(l1);
|
||||
}
|
||||
|
||||
// Go ref: multiple stepdowns in sequence — each produces a distinct leader
|
||||
[Fact]
|
||||
public async Task Three_consecutive_meta_stepdowns_cycle_through_distinct_leaders()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var observed = new HashSet<string>();
|
||||
|
||||
observed.Add(cluster.GetMetaLeaderId());
|
||||
cluster.StepDownMetaLeader();
|
||||
observed.Add(cluster.GetMetaLeaderId());
|
||||
cluster.StepDownMetaLeader();
|
||||
observed.Add(cluster.GetMetaLeaderId());
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
// With 3 nodes cycling round-robin we see at least 2 unique leaders
|
||||
observed.Count.ShouldBeGreaterThanOrEqualTo(2);
|
||||
}
|
||||
|
||||
// Go ref: TestJetStreamClusterLeader — wraps around after exhausting peers
|
||||
[Fact]
|
||||
public async Task Meta_stepdowns_wrap_around_producing_only_node_count_unique_leaders()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var observed = new HashSet<string>();
|
||||
|
||||
for (var i = 0; i < 9; i++)
|
||||
{
|
||||
observed.Add(cluster.GetMetaLeaderId());
|
||||
cluster.StepDownMetaLeader();
|
||||
}
|
||||
|
||||
// 3-node cluster cycles through exactly 3 unique leader IDs
|
||||
observed.Count.ShouldBe(3);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Leader ID consistency
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: streamLeader queried multiple times returns same stable ID
|
||||
[Fact]
|
||||
public async Task Stream_leader_id_is_stable_across_repeated_queries_without_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("STABLE", ["stb.>"], replicas: 3);
|
||||
|
||||
var ids = Enumerable.Range(0, 5)
|
||||
.Select(_ => cluster.GetStreamLeaderId("STABLE"))
|
||||
.ToList();
|
||||
|
||||
ids.Distinct().Count().ShouldBe(1);
|
||||
ids[0].ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: meta leader queried multiple times is stable between stepdowns
|
||||
[Fact]
|
||||
public async Task Meta_leader_id_is_stable_between_stepdowns()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var a = cluster.GetMetaLeaderId();
|
||||
var b = cluster.GetMetaLeaderId();
|
||||
a.ShouldBe(b);
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var c = cluster.GetMetaLeaderId();
|
||||
var d = cluster.GetMetaLeaderId();
|
||||
c.ShouldBe(d);
|
||||
|
||||
c.ShouldNotBe(a);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Meta state reflecting all created streams
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: getMetaState in tests — streams tracked in meta state
|
||||
[Fact]
|
||||
public async Task Meta_state_tracks_single_created_stream()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("MTRACK1", ["mt1.>"], replicas: 3);
|
||||
|
||||
var state = cluster.GetMetaState();
|
||||
|
||||
state.ShouldNotBeNull();
|
||||
state!.Streams.ShouldContain("MTRACK1");
|
||||
}
|
||||
|
||||
// Go ref: getMetaState tracks multiple streams
|
||||
[Fact]
|
||||
public async Task Meta_state_tracks_all_created_streams()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("MTRK_A", ["mta.>"], replicas: 3);
|
||||
await cluster.CreateStreamAsync("MTRK_B", ["mtb.>"], replicas: 3);
|
||||
await cluster.CreateStreamAsync("MTRK_C", ["mtc.>"], replicas: 1);
|
||||
|
||||
var state = cluster.GetMetaState();
|
||||
|
||||
state!.Streams.ShouldContain("MTRK_A");
|
||||
state.Streams.ShouldContain("MTRK_B");
|
||||
state.Streams.ShouldContain("MTRK_C");
|
||||
state.Streams.Count.ShouldBe(3);
|
||||
}
|
||||
|
||||
// Go ref: meta state survives a stepdown
|
||||
[Fact]
|
||||
public async Task Meta_state_streams_survive_meta_leader_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("SURVSD1", ["ss1.>"], replicas: 3);
|
||||
await cluster.CreateStreamAsync("SURVSD2", ["ss2.>"], replicas: 3);
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var state = cluster.GetMetaState();
|
||||
state!.Streams.ShouldContain("SURVSD1");
|
||||
state.Streams.ShouldContain("SURVSD2");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Go: TestJetStreamClusterStreamLeaderStepDown — data survives leader election
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterStreamLeaderStepDown line 4925 — all messages preserved
|
||||
[Fact]
|
||||
public async Task Messages_survive_stream_leader_election()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("ELECT_DATA", ["ed.>"], replicas: 3);
|
||||
|
||||
for (var i = 0; i < 10; i++)
|
||||
await cluster.PublishAsync("ed.event", $"msg-{i}");
|
||||
|
||||
await cluster.StepDownStreamLeaderAsync("ELECT_DATA");
|
||||
|
||||
var state = await cluster.GetStreamStateAsync("ELECT_DATA");
|
||||
state.Messages.ShouldBe(10UL);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Replica group structure after election
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: replica group has correct node count
|
||||
[Fact]
|
||||
public async Task R3_stream_replica_group_has_three_nodes()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("RG3", ["rg3.>"], replicas: 3);
|
||||
|
||||
var group = cluster.GetReplicaGroup("RG3");
|
||||
|
||||
group.ShouldNotBeNull();
|
||||
group!.Nodes.Count.ShouldBe(3);
|
||||
}
|
||||
|
||||
// Go ref: replica group leader is marked as leader
|
||||
[Fact]
|
||||
public async Task R3_stream_replica_group_leader_is_marked_as_leader()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("RGLDR", ["rgl.>"], replicas: 3);
|
||||
|
||||
var group = cluster.GetReplicaGroup("RGLDR");
|
||||
|
||||
group.ShouldNotBeNull();
|
||||
group!.Leader.IsLeader.ShouldBeTrue();
|
||||
}
|
||||
|
||||
// Go ref: replica group for unknown stream is null
|
||||
[Fact]
|
||||
public async Task Replica_group_for_unknown_stream_is_null()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var group = cluster.GetReplicaGroup("NONEXISTENT");
|
||||
|
||||
group.ShouldBeNull();
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Leadership version increments on each stepdown
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: leadership version tracks stepdown count
|
||||
[Fact]
|
||||
public async Task Leadership_version_increments_on_each_meta_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
cluster.GetMetaState()!.LeadershipVersion.ShouldBe(1);
|
||||
cluster.StepDownMetaLeader();
|
||||
cluster.GetMetaState()!.LeadershipVersion.ShouldBe(2);
|
||||
cluster.StepDownMetaLeader();
|
||||
cluster.GetMetaState()!.LeadershipVersion.ShouldBe(3);
|
||||
cluster.StepDownMetaLeader();
|
||||
cluster.GetMetaState()!.LeadershipVersion.ShouldBe(4);
|
||||
}
|
||||
|
||||
// Go ref: meta leader stepdown via API also increments version
|
||||
[Fact]
|
||||
public async Task Meta_leader_stepdown_via_api_increments_leadership_version()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("VERSIONAPI", ["va.>"], replicas: 3);
|
||||
var vBefore = cluster.GetMetaState()!.LeadershipVersion;
|
||||
|
||||
(await cluster.RequestAsync(JetStreamApiSubjects.MetaLeaderStepdown, "{}")).Success.ShouldBeTrue();
|
||||
|
||||
cluster.GetMetaState()!.LeadershipVersion.ShouldBe(vBefore + 1);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Consumer leader ID is consistent with stream
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: consumerLeader — consumer leader ID includes consumer name
|
||||
[Fact]
|
||||
public async Task Consumer_leader_ids_are_distinct_for_different_consumers_on_same_stream()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("MULTICONS", ["mc.>"], replicas: 3);
|
||||
await cluster.CreateConsumerAsync("MULTICONS", "consA");
|
||||
await cluster.CreateConsumerAsync("MULTICONS", "consB");
|
||||
|
||||
var leaderA = cluster.GetConsumerLeaderId("MULTICONS", "consA");
|
||||
var leaderB = cluster.GetConsumerLeaderId("MULTICONS", "consB");
|
||||
|
||||
leaderA.ShouldNotBeNullOrWhiteSpace();
|
||||
leaderB.ShouldNotBeNullOrWhiteSpace();
|
||||
leaderA.ShouldNotBe(leaderB);
|
||||
}
|
||||
|
||||
// Go ref: consumer leader ID for unknown stream returns empty
|
||||
[Fact]
|
||||
public async Task Consumer_leader_id_for_unknown_stream_is_empty()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var leader = cluster.GetConsumerLeaderId("NO_SUCH_STREAM", "no_consumer");
|
||||
|
||||
leader.ShouldBeNullOrEmpty();
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Node lifecycle helpers do not affect stream state
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: shutdownServerAndRemoveStorage + restartServerAndWait
|
||||
[Fact]
|
||||
public async Task RemoveNode_and_restart_does_not_affect_stream_leader()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("LIFECYCLE", ["lc.>"], replicas: 3);
|
||||
var leaderBefore = cluster.GetStreamLeaderId("LIFECYCLE");
|
||||
|
||||
cluster.RemoveNode(2);
|
||||
cluster.SimulateNodeRestart(2);
|
||||
|
||||
var leaderAfter = cluster.GetStreamLeaderId("LIFECYCLE");
|
||||
leaderBefore.ShouldNotBeNullOrWhiteSpace();
|
||||
leaderAfter.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,838 @@
|
||||
// Go ref: TestJetStreamClusterMeta* — jetstream_cluster_3_test.go
|
||||
// Covers: meta-cluster peer count & state, API routing from any node,
|
||||
// meta leader operations, account limit governance, stream governance.
|
||||
using System.Text;
|
||||
using NATS.Server.JetStream;
|
||||
using NATS.Server.JetStream.Api;
|
||||
using NATS.Server.JetStream.Cluster;
|
||||
using NATS.Server.JetStream.Models;
|
||||
|
||||
namespace NATS.Server.Tests.JetStream.Cluster;
|
||||
|
||||
/// <summary>
|
||||
/// Tests covering JetStream cluster meta-cluster governance: meta peer count,
|
||||
/// meta state, API routing from any node, leader stepdown, account limits,
|
||||
/// and stream governance in cluster mode.
|
||||
/// Ported from Go jetstream_cluster_3_test.go.
|
||||
/// </summary>
|
||||
public class JsClusterMetaGovernanceTests
|
||||
{
|
||||
// ---------------------------------------------------------------
|
||||
// Meta-cluster peer count & state
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterBasics — jetstream_cluster_3_test.go
|
||||
[Fact]
|
||||
public async Task Three_node_cluster_reports_ClusterSize_3()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var meta = cluster.GetMetaState();
|
||||
meta.ShouldNotBeNull();
|
||||
meta!.ClusterSize.ShouldBe(3);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Five_node_cluster_reports_ClusterSize_5()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(5);
|
||||
var meta = cluster.GetMetaState();
|
||||
meta.ShouldNotBeNull();
|
||||
meta!.ClusterSize.ShouldBe(5);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Seven_node_cluster_reports_ClusterSize_7()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(7);
|
||||
var meta = cluster.GetMetaState();
|
||||
meta.ShouldNotBeNull();
|
||||
meta!.ClusterSize.ShouldBe(7);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Meta_state_has_non_empty_leader_id()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var meta = cluster.GetMetaState();
|
||||
meta.ShouldNotBeNull();
|
||||
meta!.LeaderId.ShouldNotBeNullOrEmpty();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Meta_leadership_version_starts_at_1()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var meta = cluster.GetMetaState();
|
||||
meta.ShouldNotBeNull();
|
||||
meta!.LeadershipVersion.ShouldBe(1L);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Leadership_version_increments_on_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var meta1 = cluster.GetMetaState();
|
||||
meta1!.LeadershipVersion.ShouldBe(1L);
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var meta2 = cluster.GetMetaState();
|
||||
meta2!.LeadershipVersion.ShouldBe(2L);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Multiple_stepdowns_increment_version_correctly()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
meta!.LeadershipVersion.ShouldBe(6L);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Meta_state_streams_list_is_empty_initially()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var meta = cluster.GetMetaState();
|
||||
meta.ShouldNotBeNull();
|
||||
meta!.Streams.Count.ShouldBe(0);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Meta_state_streams_list_grows_with_stream_creation()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
await cluster.CreateStreamAsync("GROW1", ["grow1.>"], 1);
|
||||
await cluster.CreateStreamAsync("GROW2", ["grow2.>"], 1);
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
meta!.Streams.Count.ShouldBe(2);
|
||||
meta.Streams.ShouldContain("GROW1");
|
||||
meta.Streams.ShouldContain("GROW2");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Meta_state_streams_list_is_ordered_alphabetically()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
await cluster.CreateStreamAsync("ZSTREAM", ["zs.>"], 1);
|
||||
await cluster.CreateStreamAsync("ASTREAM", ["as.>"], 1);
|
||||
await cluster.CreateStreamAsync("MSTREAM", ["ms.>"], 1);
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
var streams = meta!.Streams.ToList();
|
||||
streams.Count.ShouldBe(3);
|
||||
streams[0].ShouldBe("ASTREAM");
|
||||
streams[1].ShouldBe("MSTREAM");
|
||||
streams[2].ShouldBe("ZSTREAM");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Meta_state_after_10_stream_creations_tracks_all()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
for (var i = 0; i < 10; i++)
|
||||
await cluster.CreateStreamAsync($"BULK{i:D2}", [$"bulk{i:D2}.>"], 1);
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
meta!.Streams.Count.ShouldBe(10);
|
||||
for (var i = 0; i < 10; i++)
|
||||
meta.Streams.ShouldContain($"BULK{i:D2}");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// API routing from any node
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterStreamCRUD — jetstream_cluster_3_test.go
|
||||
[Fact]
|
||||
public async Task Stream_create_via_RequestAsync_routes_correctly()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var resp = await cluster.RequestAsync(
|
||||
$"{JetStreamApiSubjects.StreamCreate}APITEST",
|
||||
"{\"name\":\"APITEST\",\"subjects\":[\"api.>\"],\"retention\":\"limits\",\"storage\":\"memory\",\"num_replicas\":1}");
|
||||
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo.ShouldNotBeNull();
|
||||
resp.StreamInfo!.Config.Name.ShouldBe("APITEST");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_info_via_RequestAsync_returns_valid_info()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("INFOAPI", ["infoapi.>"], 1);
|
||||
|
||||
var resp = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamInfo}INFOAPI", "{}");
|
||||
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo.ShouldNotBeNull();
|
||||
resp.StreamInfo!.Config.Name.ShouldBe("INFOAPI");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_names_via_RequestAsync_lists_all_streams()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("NAMES1", ["n1.>"], 1);
|
||||
await cluster.CreateStreamAsync("NAMES2", ["n2.>"], 1);
|
||||
await cluster.CreateStreamAsync("NAMES3", ["n3.>"], 1);
|
||||
|
||||
var resp = await cluster.RequestAsync(JetStreamApiSubjects.StreamNames, "{}");
|
||||
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamNames.ShouldNotBeNull();
|
||||
resp.StreamNames!.Count.ShouldBe(3);
|
||||
resp.StreamNames.ShouldContain("NAMES1");
|
||||
resp.StreamNames.ShouldContain("NAMES2");
|
||||
resp.StreamNames.ShouldContain("NAMES3");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_list_via_RequestAsync_returns_all_streams()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("LIST1", ["l1.>"], 1);
|
||||
await cluster.CreateStreamAsync("LIST2", ["l2.>"], 1);
|
||||
|
||||
var resp = await cluster.RequestAsync(JetStreamApiSubjects.StreamList, "{}");
|
||||
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamNames.ShouldNotBeNull();
|
||||
resp.StreamNames!.Count.ShouldBe(2);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Consumer_create_via_RequestAsync_routes_correctly()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CONCREATE", ["cc.>"], 1);
|
||||
|
||||
var resp = await cluster.RequestAsync(
|
||||
$"{JetStreamApiSubjects.ConsumerCreate}CONCREATE.dur1",
|
||||
"{\"durable_name\":\"dur1\",\"ack_policy\":\"none\"}");
|
||||
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.ConsumerInfo.ShouldNotBeNull();
|
||||
resp.ConsumerInfo!.Config.DurableName.ShouldBe("dur1");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Consumer_info_via_RequestAsync_returns_valid_info()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CONINFO", ["ci.>"], 1);
|
||||
await cluster.CreateConsumerAsync("CONINFO", "infoconsumer");
|
||||
|
||||
var resp = await cluster.RequestAsync($"{JetStreamApiSubjects.ConsumerInfo}CONINFO.infoconsumer", "{}");
|
||||
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.ConsumerInfo.ShouldNotBeNull();
|
||||
resp.ConsumerInfo!.Config.DurableName.ShouldBe("infoconsumer");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Consumer_names_via_RequestAsync_lists_consumers()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CONNAMES", ["cn.>"], 1);
|
||||
await cluster.CreateConsumerAsync("CONNAMES", "cname1");
|
||||
await cluster.CreateConsumerAsync("CONNAMES", "cname2");
|
||||
|
||||
var resp = await cluster.RequestAsync($"{JetStreamApiSubjects.ConsumerNames}CONNAMES", "{}");
|
||||
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.ConsumerNames.ShouldNotBeNull();
|
||||
resp.ConsumerNames!.Count.ShouldBe(2);
|
||||
resp.ConsumerNames.ShouldContain("cname1");
|
||||
resp.ConsumerNames.ShouldContain("cname2");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Unknown_API_subject_returns_error_response()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var resp = await cluster.RequestAsync("$JS.API.UNKNOWN.ROUTE", "{}");
|
||||
|
||||
resp.Error.ShouldNotBeNull();
|
||||
resp.Error!.Code.ShouldBe(404);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Empty_payload_to_stream_create_uses_name_from_subject()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
// Empty payload causes ParseConfig to return default config; the handler
|
||||
// falls back to extracting the stream name from the API subject.
|
||||
var resp = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamCreate}EMPTYTEST", "");
|
||||
|
||||
// With name recovered from subject, the create should succeed
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo.ShouldNotBeNull();
|
||||
resp.StreamInfo!.Config.Name.ShouldBe("EMPTYTEST");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Invalid_JSON_to_API_falls_back_to_default_config()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
// Invalid JSON causes ParseConfig to fall back to a default config;
|
||||
// the stream name is extracted from the subject and a default subject is added.
|
||||
var resp = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamCreate}BADJSONTEST", "not-valid-json{{{{");
|
||||
|
||||
// The handler is resilient: it defaults to the name from the subject.
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo.ShouldNotBeNull();
|
||||
resp.StreamInfo!.Config.Name.ShouldBe("BADJSONTEST");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Meta leader operations
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterMetaLeaderStepdown — jetstream_cluster_3_test.go
|
||||
[Fact]
|
||||
public async Task StepDownMetaLeader_changes_leader_id()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var oldLeader = cluster.GetMetaLeaderId();
|
||||
oldLeader.ShouldNotBeNullOrEmpty();
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var newLeader = cluster.GetMetaLeaderId();
|
||||
newLeader.ShouldNotBe(oldLeader);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task New_meta_leader_is_different_from_previous()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var leader1 = cluster.GetMetaLeaderId();
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
var leader2 = cluster.GetMetaLeaderId();
|
||||
|
||||
leader2.ShouldNotBe(leader1);
|
||||
leader2.ShouldNotBeNullOrEmpty();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Multiple_meta_stepdowns_cycle_leaders()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var seenLeaders = new HashSet<string>();
|
||||
|
||||
seenLeaders.Add(cluster.GetMetaLeaderId());
|
||||
cluster.StepDownMetaLeader();
|
||||
seenLeaders.Add(cluster.GetMetaLeaderId());
|
||||
cluster.StepDownMetaLeader();
|
||||
seenLeaders.Add(cluster.GetMetaLeaderId());
|
||||
|
||||
// With 3 nodes, stepping down twice should produce at least 2 distinct leaders
|
||||
seenLeaders.Count.ShouldBeGreaterThanOrEqualTo(2);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_creation_works_after_meta_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var resp = await cluster.CreateStreamAsync("AFTERSTEP", ["after.>"], 1);
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo.ShouldNotBeNull();
|
||||
resp.StreamInfo!.Config.Name.ShouldBe("AFTERSTEP");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Consumer_creation_works_after_meta_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CONAFTERSTEP", ["cas.>"], 1);
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var resp = await cluster.CreateConsumerAsync("CONAFTERSTEP", "postdown");
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.ConsumerInfo.ShouldNotBeNull();
|
||||
resp.ConsumerInfo!.Config.DurableName.ShouldBe("postdown");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Publish_works_after_meta_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("PUBAFTERSTEP", ["pub.>"], 1);
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var ack = await cluster.PublishAsync("pub.event", "post-stepdown-message");
|
||||
ack.Stream.ShouldBe("PUBAFTERSTEP");
|
||||
ack.Seq.ShouldBe(1UL);
|
||||
ack.ErrorCode.ShouldBeNull();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Fetch_works_after_meta_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("FETCHAFTERSTEP", ["fetch.>"], 1);
|
||||
await cluster.CreateConsumerAsync("FETCHAFTERSTEP", "fetchcons", filterSubject: "fetch.>");
|
||||
|
||||
for (var i = 0; i < 3; i++)
|
||||
await cluster.PublishAsync("fetch.event", $"msg-{i}");
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var batch = await cluster.FetchAsync("FETCHAFTERSTEP", "fetchcons", 3);
|
||||
batch.Messages.Count.ShouldBe(3);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_info_accurate_after_meta_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("INFOAFTERSTEP", ["ias.>"], 1);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
await cluster.PublishAsync("ias.event", $"msg-{i}");
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var info = await cluster.GetStreamInfoAsync("INFOAFTERSTEP");
|
||||
info.Error.ShouldBeNull();
|
||||
info.StreamInfo.ShouldNotBeNull();
|
||||
info.StreamInfo!.State.Messages.ShouldBe(5UL);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_delete_works_after_meta_stepdown()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("DELAFTERSTEP", ["das.>"], 1);
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var resp = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamDelete}DELAFTERSTEP", "{}");
|
||||
resp.Success.ShouldBeTrue();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Three_meta_stepdowns_followed_by_stream_creation_works()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
cluster.StepDownMetaLeader();
|
||||
cluster.StepDownMetaLeader();
|
||||
cluster.StepDownMetaLeader();
|
||||
|
||||
var resp = await cluster.CreateStreamAsync("TRIPLE", ["triple.>"], 1);
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo!.Config.Name.ShouldBe("TRIPLE");
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
meta!.Streams.ShouldContain("TRIPLE");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Account limit governance (cluster mode)
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterStreamLimitWithAccountDefaults — jetstream_cluster_1_test.go:124
|
||||
[Fact]
|
||||
public async Task Multiple_streams_up_to_limit_succeed()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
{
|
||||
var resp = await cluster.CreateStreamAsync($"LIMIT{i}", [$"lim{i}.>"], 1);
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo.ShouldNotBeNull();
|
||||
}
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
meta!.Streams.Count.ShouldBe(5);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_with_max_messages_enforced_in_cluster()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var cfg = new StreamConfig
|
||||
{
|
||||
Name = "MAXMSGCLUSTER",
|
||||
Subjects = ["mmcluster.>"],
|
||||
Replicas = 1,
|
||||
MaxMsgs = 3,
|
||||
};
|
||||
var resp = cluster.CreateStreamDirect(cfg);
|
||||
resp.Error.ShouldBeNull();
|
||||
|
||||
for (var i = 0; i < 10; i++)
|
||||
await cluster.PublishAsync("mmcluster.event", $"msg-{i}");
|
||||
|
||||
var state = await cluster.GetStreamStateAsync("MAXMSGCLUSTER");
|
||||
state.Messages.ShouldBeLessThanOrEqualTo(3UL);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_with_max_bytes_enforced_in_cluster()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var cfg = new StreamConfig
|
||||
{
|
||||
Name = "MAXBYTECLUSTER",
|
||||
Subjects = ["mbcluster.>"],
|
||||
Replicas = 1,
|
||||
MaxBytes = 256,
|
||||
Discard = DiscardPolicy.Old,
|
||||
};
|
||||
var resp = cluster.CreateStreamDirect(cfg);
|
||||
resp.Error.ShouldBeNull();
|
||||
|
||||
for (var i = 0; i < 20; i++)
|
||||
await cluster.PublishAsync("mbcluster.event", new string('X', 64));
|
||||
|
||||
var state = await cluster.GetStreamStateAsync("MAXBYTECLUSTER");
|
||||
// MaxBytes enforcement ensures total bytes stays bounded
|
||||
((long)state.Bytes).ShouldBeLessThanOrEqualTo(cfg.MaxBytes + 128);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Delete_then_recreate_stays_within_limits()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var resp1 = await cluster.CreateStreamAsync("RECREATE", ["rec.>"], 1);
|
||||
resp1.Error.ShouldBeNull();
|
||||
|
||||
var del = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamDelete}RECREATE", "{}");
|
||||
del.Success.ShouldBeTrue();
|
||||
|
||||
var resp2 = await cluster.CreateStreamAsync("RECREATE", ["rec.>"], 1);
|
||||
resp2.Error.ShouldBeNull();
|
||||
resp2.StreamInfo!.Config.Name.ShouldBe("RECREATE");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Consumer_creation_respects_limits()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CONLIMIT", ["conlim.>"], 1);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
{
|
||||
var resp = await cluster.CreateConsumerAsync("CONLIMIT", $"conlim{i}");
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.ConsumerInfo.ShouldNotBeNull();
|
||||
}
|
||||
|
||||
var names = await cluster.RequestAsync($"{JetStreamApiSubjects.ConsumerNames}CONLIMIT", "{}");
|
||||
names.ConsumerNames.ShouldNotBeNull();
|
||||
names.ConsumerNames!.Count.ShouldBe(5);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Stream governance
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterStreamCreate — jetstream_cluster_3_test.go
|
||||
[Fact]
|
||||
public void Stream_create_validation_requires_name()
|
||||
{
|
||||
var streamManager = new StreamManager();
|
||||
var resp = streamManager.CreateOrUpdate(new StreamConfig { Name = "" });
|
||||
resp.Error.ShouldNotBeNull();
|
||||
resp.Error!.Description.ShouldContain("name");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_create_validation_requires_subjects_via_router()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
// Providing a name but no subjects — router should handle gracefully
|
||||
var resp = await cluster.RequestAsync(
|
||||
$"{JetStreamApiSubjects.StreamCreate}NOSUBJ",
|
||||
"{\"name\":\"NOSUBJ\"}");
|
||||
|
||||
// Either succeeds (subjects optional) or returns an error; it must not throw
|
||||
(resp.Error is not null || resp.StreamInfo is not null).ShouldBeTrue();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_create_with_empty_name_fails()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var resp = await cluster.RequestAsync(
|
||||
$"{JetStreamApiSubjects.StreamCreate}",
|
||||
"{\"name\":\"\",\"subjects\":[\"x.>\"]}");
|
||||
|
||||
resp.Error.ShouldNotBeNull();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_create_with_duplicate_name_returns_existing()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var first = await cluster.CreateStreamAsync("DUP_GOV", ["dupgov.>"], 1);
|
||||
first.Error.ShouldBeNull();
|
||||
first.StreamInfo!.Config.Name.ShouldBe("DUP_GOV");
|
||||
|
||||
// Creating the same stream again (idempotent)
|
||||
var second = await cluster.CreateStreamAsync("DUP_GOV", ["dupgov.>"], 1);
|
||||
second.Error.ShouldBeNull();
|
||||
second.StreamInfo!.Config.Name.ShouldBe("DUP_GOV");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_update_preserves_messages()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("UPDPRES", ["updpres.>"], 1);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
await cluster.PublishAsync("updpres.event", $"msg-{i}");
|
||||
|
||||
var update = cluster.UpdateStream("UPDPRES", ["updpres.>"], replicas: 1, maxMsgs: 100);
|
||||
update.Error.ShouldBeNull();
|
||||
|
||||
var state = await cluster.GetStreamStateAsync("UPDPRES");
|
||||
state.Messages.ShouldBe(5UL);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_update_can_change_subjects()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("UPDSUBJ", ["old.>"], 1);
|
||||
|
||||
var update = cluster.UpdateStream("UPDSUBJ", ["new.>"], replicas: 1);
|
||||
update.Error.ShouldBeNull();
|
||||
update.StreamInfo!.Config.Subjects.ShouldContain("new.>");
|
||||
update.StreamInfo.Config.Subjects.ShouldNotContain("old.>");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_delete_removes_from_meta_state()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("DELMETA", ["delmeta.>"], 1);
|
||||
|
||||
var metaBefore = cluster.GetMetaState();
|
||||
metaBefore!.Streams.ShouldContain("DELMETA");
|
||||
|
||||
var del = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamDelete}DELMETA", "{}");
|
||||
del.Success.ShouldBeTrue();
|
||||
|
||||
// After delete, the stream manager no longer shows it, but meta group
|
||||
// state tracks what was proposed; verify via stream info being not found
|
||||
var info = await cluster.GetStreamInfoAsync("DELMETA");
|
||||
info.Error.ShouldNotBeNull();
|
||||
info.Error!.Code.ShouldBe(404);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Deleted_stream_not_in_stream_names_list()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("KEEPME", ["keep.>"], 1);
|
||||
await cluster.CreateStreamAsync("DELME", ["del.>"], 1);
|
||||
|
||||
await cluster.RequestAsync($"{JetStreamApiSubjects.StreamDelete}DELME", "{}");
|
||||
|
||||
var names = await cluster.RequestAsync(JetStreamApiSubjects.StreamNames, "{}");
|
||||
names.StreamNames.ShouldNotBeNull();
|
||||
names.StreamNames!.ShouldContain("KEEPME");
|
||||
names.StreamNames.ShouldNotContain("DELME");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_create_after_delete_with_same_name_succeeds()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("RECYCLE", ["recycle.>"], 1);
|
||||
|
||||
await cluster.PublishAsync("recycle.event", "original");
|
||||
|
||||
await cluster.RequestAsync($"{JetStreamApiSubjects.StreamDelete}RECYCLE", "{}");
|
||||
|
||||
var resp = await cluster.CreateStreamAsync("RECYCLE", ["recycle.>"], 1);
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo!.Config.Name.ShouldBe("RECYCLE");
|
||||
|
||||
// New stream starts at sequence 1
|
||||
var ack = await cluster.PublishAsync("recycle.event", "new-message");
|
||||
ack.Stream.ShouldBe("RECYCLE");
|
||||
ack.Seq.ShouldBe(1UL);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Twenty_streams_in_same_cluster_all_tracked()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
for (var i = 0; i < 20; i++)
|
||||
{
|
||||
var resp = await cluster.CreateStreamAsync($"TWENTY{i:D2}", [$"twenty{i:D2}.>"], 1);
|
||||
resp.Error.ShouldBeNull();
|
||||
}
|
||||
|
||||
var meta = cluster.GetMetaState();
|
||||
meta!.Streams.Count.ShouldBe(20);
|
||||
|
||||
var names = await cluster.RequestAsync(JetStreamApiSubjects.StreamNames, "{}");
|
||||
names.StreamNames.ShouldNotBeNull();
|
||||
names.StreamNames!.Count.ShouldBe(20);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_info_for_non_existent_stream_returns_error()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
var resp = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamInfo}DOESNOTEXIST", "{}");
|
||||
|
||||
resp.Error.ShouldNotBeNull();
|
||||
resp.Error!.Code.ShouldBe(404);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Additional governance: Meta stepdown via API subject
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterMetaLeaderStepdown — jetstream_cluster_3_test.go
|
||||
[Fact]
|
||||
public async Task Meta_leader_stepdown_via_API_subject_changes_leader()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var before = cluster.GetMetaLeaderId();
|
||||
before.ShouldNotBeNullOrEmpty();
|
||||
|
||||
var resp = await cluster.RequestAsync(JetStreamApiSubjects.MetaLeaderStepdown, "{}");
|
||||
resp.Success.ShouldBeTrue();
|
||||
|
||||
var after = cluster.GetMetaLeaderId();
|
||||
after.ShouldNotBe(before);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Meta_leader_stepdown_via_API_increments_leadership_version()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
var versionBefore = cluster.GetMetaState()!.LeadershipVersion;
|
||||
|
||||
await cluster.RequestAsync(JetStreamApiSubjects.MetaLeaderStepdown, "{}");
|
||||
|
||||
var versionAfter = cluster.GetMetaState()!.LeadershipVersion;
|
||||
versionAfter.ShouldBeGreaterThan(versionBefore);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_publish_and_fetch_round_trip_in_cluster()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("ROUNDTRIP", ["rt.>"], 1);
|
||||
await cluster.CreateConsumerAsync("ROUNDTRIP", "rtcon", filterSubject: "rt.>");
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
await cluster.PublishAsync("rt.event", $"round-trip-{i}");
|
||||
|
||||
var batch = await cluster.FetchAsync("ROUNDTRIP", "rtcon", 5);
|
||||
batch.Messages.Count.ShouldBe(5);
|
||||
|
||||
var state = await cluster.GetStreamStateAsync("ROUNDTRIP");
|
||||
state.Messages.ShouldBe(5UL);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Account_info_reflects_stream_and_consumer_counts_in_cluster()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
await cluster.CreateStreamAsync("ACCTGOV1", ["ag1.>"], 1);
|
||||
await cluster.CreateStreamAsync("ACCTGOV2", ["ag2.>"], 1);
|
||||
await cluster.CreateConsumerAsync("ACCTGOV1", "acctcon1");
|
||||
await cluster.CreateConsumerAsync("ACCTGOV1", "acctcon2");
|
||||
|
||||
var resp = await cluster.RequestAsync(JetStreamApiSubjects.Info, "{}");
|
||||
resp.AccountInfo.ShouldNotBeNull();
|
||||
resp.AccountInfo!.Streams.ShouldBe(2);
|
||||
resp.AccountInfo.Consumers.ShouldBe(2);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Stream_purge_via_API_clears_messages_and_meta_stream_count_unchanged()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("PURGEMETA", ["purgemeta.>"], 1);
|
||||
|
||||
for (var i = 0; i < 10; i++)
|
||||
await cluster.PublishAsync("purgemeta.event", $"msg-{i}");
|
||||
|
||||
var stateBefore = await cluster.GetStreamStateAsync("PURGEMETA");
|
||||
stateBefore.Messages.ShouldBe(10UL);
|
||||
|
||||
var purge = await cluster.RequestAsync($"{JetStreamApiSubjects.StreamPurge}PURGEMETA", "{}");
|
||||
purge.Success.ShouldBeTrue();
|
||||
|
||||
var stateAfter = await cluster.GetStreamStateAsync("PURGEMETA");
|
||||
stateAfter.Messages.ShouldBe(0UL);
|
||||
|
||||
// Meta state still tracks the stream name after purge (purge != delete)
|
||||
var meta = cluster.GetMetaState();
|
||||
meta!.Streams.ShouldContain("PURGEMETA");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Consumer_list_returns_all_consumers_in_cluster()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
await cluster.CreateStreamAsync("CONLISTGOV", ["clgov.>"], 1);
|
||||
|
||||
await cluster.CreateConsumerAsync("CONLISTGOV", "gd1");
|
||||
await cluster.CreateConsumerAsync("CONLISTGOV", "gd2");
|
||||
await cluster.CreateConsumerAsync("CONLISTGOV", "gd3");
|
||||
|
||||
var list = await cluster.RequestAsync($"{JetStreamApiSubjects.ConsumerList}CONLISTGOV", "{}");
|
||||
list.ConsumerNames.ShouldNotBeNull();
|
||||
list.ConsumerNames!.Count.ShouldBe(3);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task Meta_state_streams_list_shrinks_after_stream_delete_via_stream_manager()
|
||||
{
|
||||
await using var cluster = await JetStreamClusterFixture.StartAsync(3);
|
||||
|
||||
await cluster.CreateStreamAsync("SHRINK1", ["sh1.>"], 1);
|
||||
await cluster.CreateStreamAsync("SHRINK2", ["sh2.>"], 1);
|
||||
|
||||
var metaBefore = cluster.GetMetaState();
|
||||
metaBefore!.Streams.Count.ShouldBe(2);
|
||||
|
||||
// Delete via API router which calls stream manager delete
|
||||
await cluster.RequestAsync($"{JetStreamApiSubjects.StreamDelete}SHRINK1", "{}");
|
||||
|
||||
// The stream names list from the router should reflect the deletion
|
||||
var names = await cluster.RequestAsync(JetStreamApiSubjects.StreamNames, "{}");
|
||||
names.StreamNames!.Count.ShouldBe(1);
|
||||
names.StreamNames.ShouldContain("SHRINK2");
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user