Joseph Doherty
d67a7e5d0b
akka.extensions loses ClusterClientReceptionistExtensionProvider and the whole akka.cluster.client block (buffer-size / reconnect-timeout / receptionist.role) goes with it. The DistributedPubSub extension and the maximum-frame-size / log-frame-size-exceeding canary both stay — DPS is the pair-local transport and the frame canary guards every remoting message, neither of which the cross-mesh deletion touches. MeshTransportHoconTests drops its three ClusterClientSettings/ClusterReceptionistSettings asserts and keeps the frame-size pin and the DPS-extension pin, renamed since it no longer has a receptionist to survive alongside.
58 lines
2.5 KiB
C#
58 lines
2.5 KiB
C#
using Akka.Actor;
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using Akka.Configuration;
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using Shouldly;
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using Xunit;
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namespace ZB.MOM.WW.OtOpcUa.Cluster.Tests;
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/// <summary>
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/// Asserts the remoting frame-size canary and the DistributedPubSub extension that are actually
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/// <b>in force</b> on a real <see cref="ActorSystem"/> built from the shipped base config.
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/// </summary>
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/// <remarks>
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/// Asserting the <c>akka.conf</c> text instead would pass while a competing HOCON fragment
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/// silently overrode the value — the failure mode recorded at length in
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/// <c>ServiceCollectionExtensions.BuildDowningHocon</c> and pinned the same way by
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/// <c>SplitBrainResolverActivationTests</c>. In this codebase the effective value is the only
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/// one worth asserting.
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/// </remarks>
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public class MeshTransportHoconTests : IDisposable
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{
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private readonly ActorSystem _sys;
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public MeshTransportHoconTests()
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{
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var config = ConfigurationFactory
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.ParseString("akka.remote.dot-netty.tcp.port = 0\nakka.cluster.seed-nodes = []")
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.WithFallback(HoconLoader.LoadBaseConfig());
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_sys = ActorSystem.Create("mesh-hocon-probe", config);
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}
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[Fact]
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public void Oversized_frames_are_logged_rather_than_dropped_silently()
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{
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// The sister project's most expensive incident. A message over the frame limit is dropped
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// WITHOUT tearing down the association: heartbeats keep flowing, the node still reports
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// healthy, and the only symptom is a command that never arrived. log-frame-size-exceeding
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// converts that silence into a log line naming the offending size.
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_sys.Settings.Config.GetByteSize("akka.remote.dot-netty.tcp.maximum-frame-size").ShouldBe(128000);
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_sys.Settings.Config.GetByteSize("akka.remote.dot-netty.tcp.log-frame-size-exceeding").ShouldBe(32000);
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}
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[Fact]
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public void Distributed_pub_sub_extension_is_registered_at_startup()
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{
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// DPS is PAIR-LOCAL and survives the cross-mesh transport's deletion: it carries
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// MeshTransport:Mode = Dps (the single-mesh default), the node-local alarm-command publishes
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// and the node<->node redundancy-state probe leg. Losing it would break far more than deploys.
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_sys.Settings.Config.GetStringList("akka.extensions")
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.ShouldContain(s => s.Contains("DistributedPubSubExtensionProvider"));
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}
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public void Dispose()
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{
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_sys.Terminate().Wait(TimeSpan.FromSeconds(5));
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GC.SuppressFinalize(this);
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}
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}
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