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feat: complete jetstream mirror source strict runtime parity

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This commit is contained in:
Joseph Doherty
2026-02-23 14:50:18 -05:00
parent 7bea35aaa8
commit 3896512f84
3 changed files with 47 additions and 0 deletions
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7
src/NATS.Server/JetStream/MirrorSource/SourceCoordinator.cs
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@@ -18,6 +18,13 @@ public sealed class SourceCoordinator
public async Task OnOriginAppendAsync(StoredMessage message, CancellationToken ct)
{
if (!string.IsNullOrWhiteSpace(_sourceConfig.SourceAccount)
&& !string.IsNullOrWhiteSpace(message.Account)
&& !string.Equals(_sourceConfig.SourceAccount, message.Account, StringComparison.Ordinal))
{
return;
}
var subject = message.Subject;
if (!string.IsNullOrWhiteSpace(_sourceConfig.SubjectTransformPrefix))
subject = $"{_sourceConfig.SubjectTransformPrefix}{subject}";

1
src/NATS.Server/JetStream/Storage/StoredMessage.cs
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@@ -6,5 +6,6 @@ public sealed class StoredMessage
public string Subject { get; init; } = string.Empty;
public ReadOnlyMemory<byte> Payload { get; init; }
public DateTime TimestampUtc { get; init; } = DateTime.UtcNow;
public string? Account { get; init; }
public bool Redelivered { get; init; }
}

39
tests/NATS.Server.Tests/JetStream/JetStreamMirrorSourceStrictRuntimeTests.cs Normal file
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@@ -0,0 +1,39 @@
using NATS.Server.JetStream.MirrorSource;
using NATS.Server.JetStream.Models;
using NATS.Server.JetStream.Storage;
namespace NATS.Server.Tests.JetStream;
public class JetStreamMirrorSourceStrictRuntimeTests
{
[Fact]
public async Task Mirror_source_transform_and_cross_account_filters_follow_runtime_contract()
{
var sourceTarget = new MemStore();
var source = new SourceCoordinator(sourceTarget, new StreamSourceConfig
{
Name = "SRC",
SubjectTransformPrefix = "agg.",
SourceAccount = "A",
});
await source.OnOriginAppendAsync(new StoredMessage
{
Sequence = 1,
Subject = "orders.created",
Payload = "ok"u8.ToArray(),
Account = "A",
}, default);
await source.OnOriginAppendAsync(new StoredMessage
{
Sequence = 2,
Subject = "orders.created",
Payload = "skip"u8.ToArray(),
Account = "B",
}, default);
var state = await sourceTarget.GetStateAsync(default);
state.Messages.ShouldBe((ulong)1);
(await sourceTarget.LoadAsync(1, default))!.Subject.ShouldBe("agg.orders.created");
}
}