dispatch event intergration

tests/HealthTelemetryTests.cpp

@@ -0,0 +1,72 @@
+#include "HealthTelemetry.h"
+
+#include <iostream>
+
+namespace
+{
+int gFailures = 0;
+
+void Expect(bool condition, const char* message)
+{
+	if (condition)
+		return;
+
+	std::cerr << "FAIL: " << message << "\n";
+	++gFailures;
+}
+
+void TestRuntimeEventQueueMetrics()
+{
+	HealthTelemetry telemetry;
+	telemetry.RecordRuntimeEventQueueMetrics("runtime-events", 3, 64, 2, 12.5);
+
+	const HealthTelemetry::RuntimeEventMetricsSnapshot metrics = telemetry.GetRuntimeEventMetricsSnapshot();
+	Expect(metrics.queue.queueName == "runtime-events", "queue metrics store queue name");
+	Expect(metrics.queue.depth == 3, "queue metrics store depth");
+	Expect(metrics.queue.capacity == 64, "queue metrics store capacity");
+	Expect(metrics.queue.droppedCount == 2, "queue metrics store dropped count");
+	Expect(metrics.queue.oldestEventAgeMilliseconds == 12.5, "queue metrics store oldest event age");
+}
+
+void TestRuntimeEventDispatchStats()
+{
+	HealthTelemetry telemetry;
+	telemetry.RecordRuntimeEventDispatchStats(2, 5, 1, 0.75);
+	telemetry.RecordRuntimeEventDispatchStats(3, 6, 0, 0.25);
+
+	const HealthTelemetry::Snapshot snapshot = telemetry.GetSnapshot();
+	Expect(snapshot.runtimeEvents.dispatch.dispatchCallCount == 2, "dispatch stats count dispatch calls");
+	Expect(snapshot.runtimeEvents.dispatch.dispatchedEventCount == 5, "dispatch stats accumulate dispatched events");
+	Expect(snapshot.runtimeEvents.dispatch.handlerInvocationCount == 11, "dispatch stats accumulate handler invocations");
+	Expect(snapshot.runtimeEvents.dispatch.handlerFailureCount == 1, "dispatch stats accumulate handler failures");
+	Expect(snapshot.runtimeEvents.dispatch.lastDispatchDurationMilliseconds == 0.25, "dispatch stats store latest duration");
+	Expect(snapshot.runtimeEvents.dispatch.maxDispatchDurationMilliseconds == 0.75, "dispatch stats store max duration");
+}
+
+void TestRuntimeEventTryRecord()
+{
+	HealthTelemetry telemetry;
+	Expect(telemetry.TryRecordRuntimeEventQueueMetrics("runtime-events", 1, 4, 0, -5.0), "try queue metrics succeeds when uncontended");
+	Expect(telemetry.TryRecordRuntimeEventDispatchStats(1, 2, 0, -1.0), "try dispatch stats succeeds when uncontended");
+
+	const HealthTelemetry::RuntimeEventMetricsSnapshot metrics = telemetry.GetRuntimeEventMetricsSnapshot();
+	Expect(metrics.queue.oldestEventAgeMilliseconds == 0.0, "queue age is clamped to non-negative values");
+	Expect(metrics.dispatch.lastDispatchDurationMilliseconds == 0.0, "dispatch duration is clamped to non-negative values");
+}
+}
+
+int main()
+{
+	TestRuntimeEventQueueMetrics();
+	TestRuntimeEventDispatchStats();
+	TestRuntimeEventTryRecord();
+
+	if (gFailures != 0)
+	{
+		std::cerr << gFailures << " HealthTelemetry test failure(s).\n";
+		return 1;
+	}
+
+	std::cout << "HealthTelemetry tests passed.\n";
+	return 0;
+}