[management] added event store metrics

management/cmd/management.go

@@ -176,7 +176,7 @@ var (
 			if disableSingleAccMode {
 				mgmtSingleAccModeDomain = ""
 			}
-			eventStore, key, err := integrations.InitEventStore(ctx, config.Datadir, config.DataStoreEncryptionKey)
+			eventStore, key, err := integrations.InitEventStore(ctx, config.Datadir, config.DataStoreEncryptionKey, appMetrics)
 			if err != nil {
 				return fmt.Errorf("failed to initialize database: %s", err)
 			}

management/server/telemetry/app_metrics.go

@@ -29,6 +29,7 @@ type MockAppMetrics struct {
 	StoreMetricsFunc             func() *StoreMetrics
 	UpdateChannelMetricsFunc     func() *UpdateChannelMetrics
 	AddAccountManagerMetricsFunc func() *AccountManagerMetrics
+	EventStreamingMetricsFunc    func() *EventStreamingMetrics
 }
 
 // GetMeter mocks the GetMeter function of the AppMetrics interface
@@ -103,6 +104,14 @@ func (mock *MockAppMetrics) AccountManagerMetrics() *AccountManagerMetrics {
 	return nil
 }
 
+// EventStreamingMetrics mocks the EventStreamingMetrics function of the AppMetrics interface
+func (mock *MockAppMetrics) EventStreamingMetrics() *EventStreamingMetrics {
+	if mock.EventStreamingMetricsFunc != nil {
+		return mock.EventStreamingMetricsFunc()
+	}
+	return nil
+}
+
 // AppMetrics is metrics interface
 type AppMetrics interface {
 	GetMeter() metric2.Meter
@@ -114,6 +123,7 @@ type AppMetrics interface {
 	StoreMetrics() *StoreMetrics
 	UpdateChannelMetrics() *UpdateChannelMetrics
 	AccountManagerMetrics() *AccountManagerMetrics
+	EventStreamingMetrics() *EventStreamingMetrics
 }
 
 // defaultAppMetrics are core application metrics based on OpenTelemetry https://opentelemetry.io/
@@ -128,6 +138,7 @@ type defaultAppMetrics struct {
 	storeMetrics          *StoreMetrics
 	updateChannelMetrics  *UpdateChannelMetrics
 	accountManagerMetrics *AccountManagerMetrics
+	eventStreamingMetrics *EventStreamingMetrics
 }
 
 // IDPMetrics returns metrics for the idp package
@@ -160,6 +171,16 @@ func (appMetrics *defaultAppMetrics) AccountManagerMetrics() *AccountManagerMetr
 	return appMetrics.accountManagerMetrics
 }
 
+// EventStreamingMetrics returns metrics for the event streaming module
+func (appMetrics *defaultAppMetrics) EventStreamingMetrics() *EventStreamingMetrics {
+	return appMetrics.eventStreamingMetrics
+}
+
+// RegisterEventStreamingMetrics sets the event streaming metrics
+func (appMetrics *defaultAppMetrics) RegisterEventStreamingMetrics(metrics *EventStreamingMetrics) {
+	appMetrics.eventStreamingMetrics = metrics
+}
+
 // Close stop application metrics HTTP handler and closes listener.
 func (appMetrics *defaultAppMetrics) Close() error {
 	if appMetrics.listener == nil {
@@ -184,10 +205,10 @@ func (appMetrics *defaultAppMetrics) Expose(ctx context.Context, port int, endpo
 	}
 	appMetrics.listener = listener
 	go func() {
-		err := http.Serve(listener, rootRouter)
+		if err := http.Serve(listener, rootRouter); err != nil && err != http.ErrServerClosed {
-		if err != nil {
+			log.WithContext(ctx).Errorf("metrics server error: %v", err)
-			return
 		}
+		log.WithContext(ctx).Info("metrics server stopped")
 	}()
 
 	log.WithContext(ctx).Infof("enabled application metrics and exposing on http://%s", listener.Addr().String())
@@ -204,7 +225,7 @@ func (appMetrics *defaultAppMetrics) GetMeter() metric2.Meter {
 func NewDefaultAppMetrics(ctx context.Context) (AppMetrics, error) {
 	exporter, err := prometheus.New()
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to create prometheus exporter: %w", err)
 	}
 
 	provider := metric.NewMeterProvider(metric.WithReader(exporter))
@@ -213,32 +234,32 @@ func NewDefaultAppMetrics(ctx context.Context) (AppMetrics, error) {
 
 	idpMetrics, err := NewIDPMetrics(ctx, meter)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to initialize IDP metrics: %w", err)
 	}
 
 	middleware, err := NewMetricsMiddleware(ctx, meter)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to initialize HTTP middleware metrics: %w", err)
 	}
 
 	grpcMetrics, err := NewGRPCMetrics(ctx, meter)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to initialize gRPC metrics: %w", err)
 	}
 
 	storeMetrics, err := NewStoreMetrics(ctx, meter)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to initialize store metrics: %w", err)
 	}
 
 	updateChannelMetrics, err := NewUpdateChannelMetrics(ctx, meter)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to initialize update channel metrics: %w", err)
 	}
 
 	accountManagerMetrics, err := NewAccountManagerMetrics(ctx, meter)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to initialize account manager metrics: %w", err)
 	}
 
 	return &defaultAppMetrics{