alarms: propagate degraded/source_provider through snapshot + gateway cache paths (integration fix I1/I2)

2026-06-13 10:53:55 -04:00
parent 2f30f0c7c0
commit ec88532fe4
4 changed files with 172 additions and 0 deletions
@@ -279,6 +279,60 @@ public sealed class AlarmDispatcherTests
        Assert.Equal(AlarmConditionState.ActiveAcked, snapshots[1].CurrentState);
    }

+    /// <summary>
+    ///     Verifies that the per-record subtag-fallback flag flows through the
+    ///     snapshot path: a degraded record maps to an
+    ///     <see cref="ActiveAlarmSnapshot"/> with <see cref="ActiveAlarmSnapshot.Degraded"/>
+    ///     set and <see cref="AlarmProviderMode.Subtag"/>, while a non-degraded
+    ///     record stays on the alarmmgr parity contract.
+    /// </summary>
+    [Fact]
+    public void SnapshotActiveAlarms_PropagatesDegradedAndSourceProvider()
+    {
+        FakeAlarmConsumer consumer = new FakeAlarmConsumer();
+        DateTime ts = new DateTime(2026, 5, 1, 17, 26, 14, 709, DateTimeKind.Utc);
+        consumer.SnapshotResult = new[]
+        {
+            new MxAlarmSnapshotRecord
+            {
+                AlarmGuid = Guid.NewGuid(),
+                ProviderName = "Galaxy",
+                Group = "TestArea",
+                TagName = "Tag1",
+                Type = "DSC",
+                Priority = 500,
+                State = MxAlarmStateKind.UnackAlm,
+                TransitionTimestampUtc = ts,
+                Degraded = true,
+            },
+            new MxAlarmSnapshotRecord
+            {
+                AlarmGuid = Guid.NewGuid(),
+                ProviderName = "Galaxy",
+                Group = "TestArea",
+                TagName = "Tag2",
+                Type = "ANL",
+                Priority = 100,
+                State = MxAlarmStateKind.UnackAlm,
+                TransitionTimestampUtc = ts,
+                Degraded = false,
+            },
+        };
+        using AlarmDispatcher dispatcher = new AlarmDispatcher(
+            consumer,
+            new MxAccessAlarmEventSink(new MxAccessEventQueue(), new MxAccessEventMapper()),
+            SessionId);
+
+        IReadOnlyList<ActiveAlarmSnapshot> snapshots = dispatcher.SnapshotActiveAlarms();
+        Assert.Equal(2, snapshots.Count);
+
+        Assert.True(snapshots[0].Degraded);
+        Assert.Equal(AlarmProviderMode.Subtag, snapshots[0].SourceProvider);
+
+        Assert.False(snapshots[1].Degraded);
+        Assert.Equal(AlarmProviderMode.Alarmmgr, snapshots[1].SourceProvider);
+    }
+
    /// <summary>Verifies that dispose unsubscribes the handler and disposes the consumer.</summary>
    [Fact]
    public void Dispose_WhenSubscribed_UnsubscribesHandlerAndDisposesConsumer()