fix(archreview): gateway core P0 remediation (GWC-01/02/03, TST-02, TST-12)

Interlocking changes across the gateway server (shared GatewaySession.cs /
SessionManager.cs), committed together:

- GWC-01 (Critical): alarm monitor now attaches as an internal
  (non-counted) distributor subscriber instead of a second raw drain of the
  single worker event channel; WorkerClient._events -> SingleReader with a
  claimed-once guard so a future dual-consumer regression throws loudly.
- GWC-02 (High): faulted sessions are swept in CloseExpiredLeasesAsync
  (IsFaultedReapable + FaultedReason); new FaultedGraceSeconds (default 0).
- GWC-03 (High): configurable MaxSparseArrayLength (default 1_000_000)
  enforced before allocation.
- TST-02 (High, security): StreamEvents attach now enforces the opening key
  id -> PermissionDenied on owner mismatch.
- TST-12 (Medium): CLAUDE.md retention-defaults sentence corrected.

Verified: NonWindows build clean; targeted tests 135/135 on macOS, plus
WorkerClientTests 18/18 on the Windows host.
This commit is contained in:
Joseph Doherty
2026-07-09 05:51:57 -04:00
parent 31eec41456
commit 20392cf246
30 changed files with 632 additions and 48 deletions
@@ -470,6 +470,20 @@ public sealed class AlarmFailoverEndToEndTests
}
}
/// <inheritdoc />
public async IAsyncEnumerable<MxEvent> ReadAlarmEventsAsync(
string sessionId,
[EnumeratorCancellation] CancellationToken cancellationToken)
{
await foreach (WorkerEvent workerEvent in _events.Reader.ReadAllAsync(cancellationToken))
{
if (workerEvent.Event is not null)
{
yield return workerEvent.Event;
}
}
}
/// <inheritdoc />
public bool TryGetSession(string sessionId, [MaybeNullWhen(false)] out GatewaySession session)
{
@@ -783,6 +783,20 @@ public sealed class GatewayAlarmMonitorProviderModeTests
}
}
/// <inheritdoc />
public async IAsyncEnumerable<MxEvent> ReadAlarmEventsAsync(
string sessionId,
[EnumeratorCancellation] CancellationToken cancellationToken)
{
await foreach (WorkerEvent workerEvent in _events.Reader.ReadAllAsync(cancellationToken))
{
if (workerEvent.Event is not null)
{
yield return workerEvent.Event;
}
}
}
/// <inheritdoc />
public bool TryGetSession(string sessionId, [MaybeNullWhen(false)] out GatewaySession session)
{
@@ -520,4 +520,32 @@ public sealed class GatewayOptionsValidatorTests
ValidateOptionsResult result = new GatewayOptionsValidator().Validate(null, options);
Assert.True(result.Succeeded);
}
/// <summary>Verifies a <see cref="EventOptions.MaxSparseArrayLength"/> below one fails validation.</summary>
/// <param name="value">Sparse-array cap under test.</param>
[Theory]
[InlineData(0)]
[InlineData(-1)]
public void Validate_Fails_WhenMaxSparseArrayLengthBelowOne(int value)
{
GatewayOptions options = CloneWithEvents(
ValidOptions(),
new EventOptions { MaxSparseArrayLength = value });
ValidateOptionsResult result = new GatewayOptionsValidator().Validate(null, options);
Assert.True(result.Failed);
Assert.Contains(
result.Failures!,
f => f.Contains("MxGateway:Events:MaxSparseArrayLength"));
}
/// <summary>Verifies a positive <see cref="EventOptions.MaxSparseArrayLength"/> within range passes validation.</summary>
[Fact]
public void Validate_Succeeds_WhenMaxSparseArrayLengthWithinRange()
{
GatewayOptions options = CloneWithEvents(
ValidOptions(),
new EventOptions { MaxSparseArrayLength = 1 });
ValidateOptionsResult result = new GatewayOptionsValidator().Validate(null, options);
Assert.True(result.Succeeded);
}
}
@@ -281,6 +281,14 @@ public sealed class DashboardSessionAdminServiceTests
throw new NotSupportedException();
}
/// <inheritdoc />
public IAsyncEnumerable<MxEvent> ReadAlarmEventsAsync(
string sessionId,
CancellationToken cancellationToken)
{
throw new NotSupportedException();
}
/// <inheritdoc />
public Task<SessionCloseResult> CloseSessionAsync(
string sessionId,
@@ -38,6 +38,58 @@ public sealed class EventStreamServiceTests
Assert.Equal(1, metrics.GetSnapshot().StreamDisconnects);
}
/// <summary>
/// TST-02 (owner-scoped attach): the API key that opened a session may attach its event
/// stream — the caller key equals the session owner, so streaming proceeds normally.
/// </summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
public async Task StreamEventsAsync_WhenCallerKeyMatchesOwner_Streams()
{
FakeWorkerClient workerClient = new();
GatewaySession session = CreateReadySession(workerClient, ownerKeyId: "key-owner");
EventStreamService service = CreateService(new FakeSessionManager(session));
workerClient.Events.Add(CreateWorkerEvent(sequence: 5, MxEventFamily.OnDataChange));
workerClient.CompleteAfterConfiguredEvents = true;
List<MxEvent> events = [];
await foreach (MxEvent mxEvent in service
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: "key-owner", CancellationToken.None)
.WithCancellation(CancellationToken.None))
{
events.Add(mxEvent);
}
Assert.Equal([5UL], events.Select(mxEvent => mxEvent.WorkerSequence).ToArray());
}
/// <summary>
/// TST-02 (owner-scoped attach, security control): a caller whose API key differs from
/// the key that opened the session is rejected with a <see cref="SessionManagerErrorCode.PermissionDenied"/>
/// fault before any events are streamed — closing the reconnect/fan-out trust-boundary hole.
/// </summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
public async Task StreamEventsAsync_WhenCallerKeyDiffersFromOwner_ThrowsPermissionDenied()
{
FakeWorkerClient workerClient = new();
GatewaySession session = CreateReadySession(workerClient, ownerKeyId: "key-owner");
EventStreamService service = CreateService(new FakeSessionManager(session));
SessionManagerException exception = await Assert.ThrowsAsync<SessionManagerException>(async () =>
{
await foreach (MxEvent _ in service
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: "key-intruder", CancellationToken.None)
.WithCancellation(CancellationToken.None))
{
// No event should be yielded — the owner check runs before the first attach.
}
});
Assert.Equal(SessionManagerErrorCode.PermissionDenied, exception.ErrorCode);
Assert.Equal(0, session.ActiveEventSubscriberCount);
}
/// <summary>Verifies that a second event subscriber is rejected when one is already active.</summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
@@ -48,13 +100,13 @@ public sealed class EventStreamServiceTests
EventStreamService service = CreateService(new FakeSessionManager(session));
using CancellationTokenSource firstSubscriberCancellation = new();
await using IAsyncEnumerator<MxEvent> firstSubscriber = service
.StreamEventsAsync(CreateRequest(session.SessionId), firstSubscriberCancellation.Token)
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: null, firstSubscriberCancellation.Token)
.GetAsyncEnumerator(firstSubscriberCancellation.Token);
Task<bool> firstMoveTask = firstSubscriber.MoveNextAsync().AsTask();
await WaitUntilAsync(() => session.ActiveEventSubscriberCount == 1);
await using IAsyncEnumerator<MxEvent> secondSubscriber = service
.StreamEventsAsync(CreateRequest(session.SessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
SessionManagerException exception = await Assert.ThrowsAsync<SessionManagerException>(
@@ -78,7 +130,7 @@ public sealed class EventStreamServiceTests
EventStreamService service = CreateService(new FakeSessionManager(session));
using CancellationTokenSource cancellationTokenSource = new();
await using IAsyncEnumerator<MxEvent> subscriber = service
.StreamEventsAsync(CreateRequest(session.SessionId), cancellationTokenSource.Token)
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: null, cancellationTokenSource.Token)
.GetAsyncEnumerator(cancellationTokenSource.Token);
Task<bool> moveTask = subscriber.MoveNextAsync().AsTask();
@@ -108,7 +160,7 @@ public sealed class EventStreamServiceTests
workerClient.Events.Add(CreateWorkerEvent(sequence: 3, MxEventFamily.OnDataChange));
workerClient.CompleteAfterConfiguredEvents = true;
await using IAsyncEnumerator<MxEvent> subscriber = service
.StreamEventsAsync(CreateRequest(session.SessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
Assert.True(await subscriber.MoveNextAsync().AsTask().WaitAsync(TestTimeout));
@@ -142,10 +194,10 @@ public sealed class EventStreamServiceTests
firstWorkerClient.CompleteAfterConfiguredEvents = true;
secondWorkerClient.CompleteAfterConfiguredEvents = true;
await using IAsyncEnumerator<MxEvent> firstSubscriber = service
.StreamEventsAsync(CreateRequest(firstSession.SessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(firstSession.SessionId), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
await using IAsyncEnumerator<MxEvent> secondSubscriber = service
.StreamEventsAsync(CreateRequest(secondSession.SessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(secondSession.SessionId), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
Assert.True(await firstSubscriber.MoveNextAsync().AsTask().WaitAsync(TestTimeout));
@@ -192,7 +244,7 @@ public sealed class EventStreamServiceTests
workerClient.CompleteAfterConfiguredEvents = true;
await using IAsyncEnumerator<MxEvent> subscriber = service
.StreamEventsAsync(CreateRequest(session.SessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
// The pump fans 50 events into a subscriber channel with capacity 1 faster than this
@@ -246,7 +298,7 @@ public sealed class EventStreamServiceTests
workerClient.CompleteAfterConfiguredEvents = true;
await using IAsyncEnumerator<MxEvent> subscriber = service
.StreamEventsAsync(CreateRequest(session.SessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
SessionManagerException exception = await Assert.ThrowsAsync<SessionManagerException>(
@@ -298,7 +350,7 @@ public sealed class EventStreamServiceTests
using GatewayMetrics metrics = new();
EventStreamService service = CreateService(new FakeSessionManager(session), metrics);
await using IAsyncEnumerator<MxEvent> subscriber = service
.StreamEventsAsync(CreateRequest(session.SessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
WorkerClientException exception = await Assert.ThrowsAsync<WorkerClientException>(
@@ -333,7 +385,7 @@ public sealed class EventStreamServiceTests
// Resume after sequence 2: retained window [1..5] covers it — replay 3,4,5 then live.
await using IAsyncEnumerator<MxEvent> resume = service
.StreamEventsAsync(CreateRequest(session.SessionId, afterWorkerSequence: 2), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId, afterWorkerSequence: 2), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
MxEvent r3 = await ReadNextAsync(resume);
@@ -374,7 +426,7 @@ public sealed class EventStreamServiceTests
// Resume after 1: events 1,2 are below the oldest retained (3) and were evicted, so
// they are unrecoverable => sentinel first, then the retained tail 3,4,5, then live.
await using IAsyncEnumerator<MxEvent> realResume = service
.StreamEventsAsync(CreateRequest(session.SessionId, afterWorkerSequence: 1), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId, afterWorkerSequence: 1), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
MxEvent sentinel = await ReadNextAsync(realResume);
@@ -419,7 +471,7 @@ public sealed class EventStreamServiceTests
// Resume after 2: replay 3,4 then live 5,6,7. Collect across the boundary and assert
// the full sequence is contiguous with no duplicate and no skip.
await using IAsyncEnumerator<MxEvent> resume = service
.StreamEventsAsync(CreateRequest(session.SessionId, afterWorkerSequence: 2), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId, afterWorkerSequence: 2), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
List<ulong> collected = [];
@@ -461,7 +513,7 @@ public sealed class EventStreamServiceTests
// reads must be exactly 4 then 5 (no sentinel, no <=3 event); a live tag confirms the
// stream resumed live strictly after 5.
await using IAsyncEnumerator<MxEvent> resume = service
.StreamEventsAsync(CreateRequest(session.SessionId, afterWorkerSequence: 3), CancellationToken.None)
.StreamEventsAsync(CreateRequest(session.SessionId, afterWorkerSequence: 3), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
MxEvent first = await ReadNextAsync(resume);
@@ -512,7 +564,7 @@ public sealed class EventStreamServiceTests
int expectedCount)
{
await using IAsyncEnumerator<MxEvent> primer = service
.StreamEventsAsync(CreateRequest(sessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(sessionId), callerKeyId: null, CancellationToken.None)
.GetAsyncEnumerator();
for (int i = 0; i < expectedCount; i++)
{
@@ -551,7 +603,7 @@ public sealed class EventStreamServiceTests
{
List<MxEvent> events = [];
await foreach (MxEvent mxEvent in service
.StreamEventsAsync(CreateRequest(sessionId), CancellationToken.None)
.StreamEventsAsync(CreateRequest(sessionId), callerKeyId: null, CancellationToken.None)
.WithCancellation(CancellationToken.None))
{
events.Add(mxEvent);
@@ -575,7 +627,8 @@ public sealed class EventStreamServiceTests
int queueCapacity = 8,
GatewayMetrics? metrics = null,
EventBackpressurePolicy backpressurePolicy = EventBackpressurePolicy.FailFast,
int replayBufferCapacity = 1024)
int replayBufferCapacity = 1024,
string? ownerKeyId = null)
{
// The per-subscriber overflow policy now lives in the session's
// SessionEventDistributor, so the session must share the same metrics sink and
@@ -587,7 +640,7 @@ public sealed class EventStreamServiceTests
"pipe",
"nonce",
"client",
ownerKeyId: null,
ownerKeyId: ownerKeyId,
"client-session",
"client-correlation",
TimeSpan.FromSeconds(30),
@@ -702,6 +755,14 @@ public sealed class EventStreamServiceTests
return _sessions[sessionId].ReadEventsAsync(cancellationToken);
}
/// <inheritdoc />
public IAsyncEnumerable<MxEvent> ReadAlarmEventsAsync(
string sessionId,
CancellationToken cancellationToken)
{
throw new NotSupportedException();
}
/// <inheritdoc />
public Task<SessionCloseResult> CloseSessionAsync(
string sessionId,
@@ -948,6 +948,14 @@ public sealed class MxAccessGatewayServiceConstraintTests
}
}
/// <inheritdoc />
public IAsyncEnumerable<MxEvent> ReadAlarmEventsAsync(
string sessionId,
CancellationToken cancellationToken)
{
throw new NotSupportedException();
}
/// <inheritdoc />
public Task<SessionCloseResult> CloseSessionAsync(
string sessionId,
@@ -994,6 +1002,7 @@ public sealed class MxAccessGatewayServiceConstraintTests
/// <inheritdoc />
public async IAsyncEnumerable<MxEvent> StreamEventsAsync(
StreamEventsRequest request,
string? callerKeyId,
[System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken cancellationToken)
{
foreach (WorkerEvent ev in sessionManager.Events)
@@ -616,6 +616,14 @@ public sealed class MxAccessGatewayServiceTests
}
}
/// <inheritdoc />
public IAsyncEnumerable<MxEvent> ReadAlarmEventsAsync(
string sessionId,
CancellationToken cancellationToken)
{
throw new NotSupportedException();
}
/// <inheritdoc />
public Task<SessionCloseResult> CloseSessionAsync(
string sessionId,
@@ -653,6 +661,7 @@ public sealed class MxAccessGatewayServiceTests
/// <inheritdoc />
public async IAsyncEnumerable<MxEvent> StreamEventsAsync(
StreamEventsRequest request,
string? callerKeyId,
[EnumeratorCancellation] CancellationToken cancellationToken)
{
sessionManager.RecordReadEventsSessionId(request.SessionId);
@@ -88,7 +88,7 @@ public sealed class GatewaySessionDashboardMirrorTests
Task grpcReader = Task.Run(async () =>
{
await foreach (MxEvent mxEvent in service
.StreamEventsAsync(new StreamEventsRequest { SessionId = session.SessionId }, CancellationToken.None)
.StreamEventsAsync(new StreamEventsRequest { SessionId = session.SessionId }, callerKeyId: null, CancellationToken.None)
.WithCancellation(CancellationToken.None))
{
grpcEvents.Add(mxEvent);
@@ -107,6 +107,65 @@ public sealed class GatewaySessionDashboardMirrorTests
Assert.Equal([1UL, 2UL, 3UL], broadcaster.Captures.Select(capture => capture.MxEvent.WorkerSequence).ToArray());
}
/// <summary>
/// GWC-01 regression: with the internal dashboard mirror active, a second internal
/// subscriber (the alarm monitor's feed, attached via
/// <see cref="GatewaySession.AttachInternalEventSubscriber"/>) receives EVERY event —
/// including the alarm <c>Acknowledge</c> transition — rather than the two consumers
/// each getting a random half of the single worker channel. Before the fix the alarm
/// monitor drained the worker channel directly, so with the dashboard mirror pump also
/// draining it the two split the stream and Acknowledge transitions were silently lost.
/// </summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
public async Task InternalAlarmSubscriber_AndDashboardMirror_BothReceiveEveryEvent()
{
FakeWorkerClient workerClient = new();
workerClient.Events.Add(CreateWorkerEvent(1, MxEventFamily.OnDataChange));
workerClient.Events.Add(CreateAlarmTransitionEvent(2, AlarmTransitionKind.Raise));
workerClient.Events.Add(CreateAlarmTransitionEvent(3, AlarmTransitionKind.Acknowledge));
workerClient.Events.Add(CreateAlarmTransitionEvent(4, AlarmTransitionKind.Clear));
workerClient.CompleteAfterConfiguredEvents = true;
// Hold the finite stream until BOTH internal subscribers (dashboard mirror + alarm feed)
// are registered so neither misses an event before the pump drains.
workerClient.HoldEventsUntilReleased();
RecordingDashboardEventBroadcaster broadcaster = new();
await using GatewaySession session = CreateSession(workerClient, broadcaster);
session.AttachWorkerClient(workerClient);
// MarkReady registers the internal dashboard subscriber and starts the (gated) pump.
session.MarkReady();
// Attach the alarm monitor's internal subscriber and drain it concurrently. Registered
// BEFORE the stream is released, so it is present at pump start alongside the dashboard.
using IEventSubscriberLease alarmLease = session.AttachInternalEventSubscriber();
List<MxEvent> alarmEvents = [];
Task alarmReader = Task.Run(async () =>
{
await foreach (MxEvent mxEvent in alarmLease.Reader.ReadAllAsync(CancellationToken.None))
{
alarmEvents.Add(mxEvent);
}
});
workerClient.ReleaseEvents();
await WaitUntilAsync(() => broadcaster.Captures.Count == 4 && alarmEvents.Count == 4);
await alarmReader.WaitAsync(TestTimeout);
// Both internal consumers see the full, identical, ordered stream — no splitting.
Assert.Equal([1UL, 2UL, 3UL, 4UL], broadcaster.Captures.Select(capture => capture.MxEvent.WorkerSequence).ToArray());
Assert.Equal([1UL, 2UL, 3UL, 4UL], alarmEvents.Select(mxEvent => mxEvent.WorkerSequence).ToArray());
// The Acknowledge transition specifically reaches the alarm feed (the transition the
// pre-fix split silently dropped, leaving clients showing unacked alarms indefinitely).
Assert.Contains(
alarmEvents,
mxEvent => mxEvent.BodyCase == MxEvent.BodyOneofCase.OnAlarmTransition
&& mxEvent.OnAlarmTransition.TransitionKind == AlarmTransitionKind.Acknowledge);
}
/// <summary>
/// Hazard guard: starting the pump at Ready with a fast-completing worker stream
/// and zero subscribers used to drain into nothing and leave a later subscriber hanging.
@@ -222,6 +281,19 @@ public sealed class GatewaySessionDashboardMirrorTests
return new WorkerEvent { Event = mxEvent };
}
private static WorkerEvent CreateAlarmTransitionEvent(ulong sequence, AlarmTransitionKind kind)
{
MxEvent mxEvent = new()
{
SessionId = "session-dashboard-mirror",
Family = MxEventFamily.OnAlarmTransition,
WorkerSequence = sequence,
OnAlarmTransition = new OnAlarmTransitionEvent { TransitionKind = kind },
};
return new WorkerEvent { Event = mxEvent };
}
private static async Task WaitUntilAsync(Func<bool> predicate, [CallerArgumentExpression(nameof(predicate))] string? condition = null)
{
using CancellationTokenSource cancellationTokenSource = new(TestTimeout);
@@ -280,6 +352,11 @@ public sealed class GatewaySessionDashboardMirrorTests
string sessionId,
CancellationToken cancellationToken) => session.ReadEventsAsync(cancellationToken);
/// <inheritdoc />
public IAsyncEnumerable<MxEvent> ReadAlarmEventsAsync(
string sessionId,
CancellationToken cancellationToken) => throw new NotSupportedException();
/// <inheritdoc />
public Task<SessionCloseResult> CloseSessionAsync(
string sessionId,
@@ -975,6 +975,68 @@ public sealed class SessionManagerTests
Assert.Equal(0, workerClient.ShutdownCount);
}
/// <summary>
/// A faulted session is reaped by the lease sweep (default <c>FaultedGraceSeconds=0</c>)
/// even though its normal lease is still far in the future, tearing down its worker and
/// freeing the slot, while a healthy leased session in the same manager is untouched.
/// </summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
public async Task CloseExpiredLeasesAsync_ReapsFaultedSession()
{
FakeWorkerClient faultedClient = new();
FakeWorkerClient healthyClient = new();
QueueingSessionWorkerClientFactory factory = new(faultedClient, healthyClient);
SessionManager manager = CreateManager(factory);
GatewaySession faultedSession = await manager.OpenSessionAsync(CreateOpenRequest(), "client-1", ownerKeyId: null, CancellationToken.None);
GatewaySession healthySession = await manager.OpenSessionAsync(CreateOpenRequest(), "client-2", ownerKeyId: null, CancellationToken.None);
DateTimeOffset now = DateTimeOffset.UtcNow;
// Both leases are far in the future, so only the fault can reap the faulted session.
faultedSession.ExtendLease(now.AddMinutes(30));
healthySession.ExtendLease(now.AddMinutes(30));
faultedSession.MarkFaulted("test fault");
int closedCount = await manager.CloseExpiredLeasesAsync(now, CancellationToken.None);
Assert.Equal(1, closedCount);
Assert.Equal(SessionState.Closed, faultedSession.State);
Assert.Equal(1, faultedClient.ShutdownCount);
Assert.Equal(SessionState.Ready, healthySession.State);
Assert.Equal(0, healthyClient.ShutdownCount);
}
/// <summary>
/// With a positive <c>FaultedGraceSeconds</c>, a faulted session stays observable until
/// the grace window elapses, then the next sweep reaps it.
/// </summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
public async Task CloseExpiredLeasesAsync_RespectsFaultedGraceWindow()
{
FakeWorkerClient workerClient = new();
FakeTimeProvider clock = new(DateTimeOffset.UtcNow);
SessionManager manager = CreateManager(
new FakeSessionWorkerClientFactory(workerClient),
options: CreateOptions(defaultLeaseSeconds: 1800, faultedGraceSeconds: 30),
timeProvider: clock);
GatewaySession session = await manager.OpenSessionAsync(CreateOpenRequest(), "client-1", ownerKeyId: null, CancellationToken.None);
session.MarkFaulted("test fault");
// Before the grace window elapses: the faulted session is retained (still observable).
clock.Advance(TimeSpan.FromSeconds(29));
int closedBefore = await manager.CloseExpiredLeasesAsync(clock.GetUtcNow(), CancellationToken.None);
Assert.Equal(0, closedBefore);
Assert.Equal(SessionState.Faulted, session.State);
// After the grace window elapses: the sweep reaps it.
clock.Advance(TimeSpan.FromSeconds(1));
int closedAfter = await manager.CloseExpiredLeasesAsync(clock.GetUtcNow(), CancellationToken.None);
Assert.Equal(1, closedAfter);
Assert.Equal(SessionState.Closed, session.State);
Assert.Equal(1, workerClient.ShutdownCount);
}
/// <summary>Verifies that shutdown closes all registered sessions.</summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
@@ -1023,7 +1085,8 @@ public sealed class SessionManagerTests
int maxSessions = 64,
int defaultLeaseSeconds = 1800,
int detachGraceSeconds = 0,
int workerReadyWaitTimeoutMs = 0)
int workerReadyWaitTimeoutMs = 0,
int faultedGraceSeconds = 0)
{
return new GatewayOptions
{
@@ -1034,6 +1097,7 @@ public sealed class SessionManagerTests
DefaultLeaseSeconds = defaultLeaseSeconds,
DetachGraceSeconds = detachGraceSeconds,
WorkerReadyWaitTimeoutMs = workerReadyWaitTimeoutMs,
FaultedGraceSeconds = faultedGraceSeconds,
},
Worker = new WorkerOptions
{
@@ -222,4 +222,35 @@ public sealed class SparseArrayExpanderTests
RpcException ex = Assert.Throws<RpcException>(() => SparseArrayExpander.Expand(value));
Assert.Equal(StatusCode.InvalidArgument, ex.StatusCode);
}
/// <summary>Verifies that a total length above the configured cap throws <see cref="StatusCode.InvalidArgument"/> before the full array is allocated.</summary>
[Fact]
public void Expand_TotalLengthExceedsConfiguredCap_ThrowsBeforeAllocation()
{
// A total_length that would force a huge allocation, but well below Array.MaxLength,
// so only the configured cap can reject it (the Array.MaxLength backstop would not).
MxValue value = SparseValue(MxDataType.Integer, 500_000_000u);
RpcException ex = Assert.Throws<RpcException>(() => SparseArrayExpander.Expand(value, maxSparseArrayLength: 1_000_000));
Assert.Equal(StatusCode.InvalidArgument, ex.StatusCode);
Assert.Contains("MaxSparseArrayLength", ex.Status.Detail, StringComparison.Ordinal);
// The value must be untouched — expansion (allocation) never ran.
Assert.Equal(MxValue.KindOneofCase.SparseArrayValue, value.KindCase);
}
/// <summary>Verifies that a total length at or below the configured cap still expands normally.</summary>
[Fact]
public void Expand_TotalLengthAtConfiguredCap_Expands()
{
MxValue value = SparseValue(
MxDataType.Integer,
4,
(1, new MxValue { Int32Value = 7 }));
SparseArrayExpander.Expand(value, maxSparseArrayLength: 4);
Assert.Equal(MxValue.KindOneofCase.ArrayValue, value.KindCase);
Assert.Equal(new[] { 0, 7, 0, 0 }, value.ArrayValue.Int32Values.Values);
}
}
@@ -122,6 +122,27 @@ public sealed class WorkerClientTests
Assert.Equal(MxEventFamily.OperationComplete, events.Current.Event.Family);
}
/// <summary>
/// The worker event channel is single-reader: a second <see cref="WorkerClient.ReadEventsAsync"/>
/// enumerator must throw rather than silently split events between two consumers (GWC-01).
/// </summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
public async Task ReadEventsAsync_SecondEnumerator_Throws()
{
await using PipePair pipePair = await PipePair.CreateAsync();
await using WorkerClient client = CreateClient(pipePair);
await CompleteHandshakeAsync(client, pipePair);
using CancellationTokenSource cancellationTokenSource = new(TestTimeout);
// First call claims the single reader.
IAsyncEnumerable<WorkerEvent> first = client.ReadEventsAsync(cancellationTokenSource.Token);
await using IAsyncEnumerator<WorkerEvent> firstEnumerator = first.GetAsyncEnumerator(cancellationTokenSource.Token);
// A second call must fail loudly at call time rather than racing the first for events.
Assert.Throws<InvalidOperationException>(() => client.ReadEventsAsync(cancellationTokenSource.Token));
}
/// <summary>Verifies that the read loop faults the client when the event queue overflows.</summary>
/// <returns>A task that represents the asynchronous operation.</returns>
[Fact]
@@ -477,6 +477,14 @@ public sealed class GatewayGrpcAuthorizationInterceptorTests
return AsyncEnumerable.Empty<WorkerEvent>();
}
/// <inheritdoc />
public IAsyncEnumerable<MxEvent> ReadAlarmEventsAsync(
string sessionId,
CancellationToken cancellationToken)
{
return AsyncEnumerable.Empty<MxEvent>();
}
/// <inheritdoc />
public Task<SessionCloseResult> CloseSessionAsync(
string sessionId,
@@ -515,6 +523,7 @@ public sealed class GatewayGrpcAuthorizationInterceptorTests
/// <inheritdoc />
public async IAsyncEnumerable<MxEvent> StreamEventsAsync(
StreamEventsRequest request,
string? callerKeyId,
[EnumeratorCancellation] CancellationToken cancellationToken)
{
await Task.CompletedTask;