D1: surface AlarmProviderSwitchCount on dashboard metric list

2026-06-14 23:49:02 -04:00
parent 371ce53409
commit 4af24b9518
2 changed files with 19 additions and 0 deletions
@@ -94,6 +94,24 @@ public sealed class DashboardSnapshotServiceTests
        Assert.Equal("worker pipe disconnected", fault.Message);
    }

+    /// <summary>
+    /// Verifies snapshot metrics include the cumulative alarm provider switch count.
+    /// </summary>
+    [Fact]
+    public void GetSnapshot_IncludesAlarmProviderSwitchCountMetric()
+    {
+        SessionRegistry registry = new();
+        using GatewayMetrics metrics = new();
+        metrics.AlarmProviderSwitched(1, 2, AlarmProviderSwitchReason.Failover);
+        DashboardSnapshotService service = CreateService(registry, metrics);
+
+        DashboardSnapshot snapshot = service.GetSnapshot();
+
+        Assert.Contains(
+            snapshot.Metrics,
+            metric => metric.Name == "mxgateway.alarms.provider_switches" && metric.Value == 1);
+    }
+
    /// <summary>
    /// Verifies snapshot redacts sensitive values from client identity, session name, and fault messages.
    /// </summary>