Fix: fix the wrong value of scaler active and the failure of paused value in Opentelemetry

CHANGELOG.md

@@ -84,6 +84,7 @@ Here is an overview of all new **experimental** features:
 ### Fixes
 
 - **General**: Fix CVE-2024-28180 in github.com/go-jose/go-jose/v3 ([#5617](https://github.com/kedacore/keda/pull/5617))
+- **General**: Fix wrong scaler active value and paused value that are pushed to OpenTelemetry ([#5705](https://github.com/kedacore/keda/issues/5705))
 - **General**: Log field `ScaledJob` no longer have conflicting types ([#5592](https://github.com/kedacore/keda/pull/5592))
 - **General**: Prometheus metrics shows errors correctly ([#5597](https://github.com/kedacore/keda/issues/5597)|[#5663](https://github.com/kedacore/keda/issues/5663))
 - **General**: Validate empty array value of triggers in ScaledObject/ScaledJob creation ([#5520](https://github.com/kedacore/keda/issues/5520))

pkg/metricscollector/opentelemetry.go

@@ -33,17 +33,18 @@ var (
 	otTriggerRegisteredTotalsCounter api.Int64UpDownCounter
 	otCrdRegisteredTotalsCounter     api.Int64UpDownCounter
 
-	otelScalerMetricVal                   OtelMetricFloat64Val
-	otelScalerMetricsLatencyVal           OtelMetricFloat64Val
-	otelScalerMetricsLatencyValDeprecated OtelMetricFloat64Val
-	otelInternalLoopLatencyVal            OtelMetricFloat64Val
-	otelInternalLoopLatencyValDeprecated  OtelMetricFloat64Val
+	otelScalerMetricVals                  []OtelMetricFloat64Val
+	otelScalerMetricsLatencyVals          []OtelMetricFloat64Val
+	otelScalerMetricsLatencyValDeprecated []OtelMetricFloat64Val
+	otelInternalLoopLatencyVals           []OtelMetricFloat64Val
+	otelInternalLoopLatencyValDeprecated  []OtelMetricFloat64Val
 	otelBuildInfoVal                      OtelMetricInt64Val
 
-	otCloudEventEmittedCounter api.Int64Counter
-	otCloudEventQueueStatusVal OtelMetricFloat64Val
+	otCloudEventEmittedCounter  api.Int64Counter
+	otCloudEventQueueStatusVals []OtelMetricFloat64Val
 
-	otelScalerActiveVal OtelMetricFloat64Val
+	otelScalerActiveVals []OtelMetricFloat64Val
+	otelScalerPauseVals  []OtelMetricFloat64Val
 )
 
 type OtelMetrics struct {
@@ -196,6 +197,15 @@ func initMeters() {
 	if err != nil {
 		otLog.Error(err, msg)
 	}
+
+	_, err = meter.Float64ObservableGauge(
+		"keda.scaled.object.paused",
+		api.WithDescription("Indicates whether a ScaledObject is paused"),
+		api.WithFloat64Callback(PausedStatusCallback),
+	)
+	if err != nil {
+		otLog.Error(err, msg)
+	}
 }
 
 func BuildInfoCallback(_ context.Context, obsrv api.Int64Observer) error {
@@ -220,55 +230,62 @@ func (o *OtelMetrics) RecordBuildInfo() {
 }
 
 func ScalerMetricValueCallback(_ context.Context, obsrv api.Float64Observer) error {
-	if otelScalerMetricVal.measurementOption != nil {
-		obsrv.Observe(otelScalerMetricVal.val, otelScalerMetricVal.measurementOption)
+	for _, v := range otelScalerMetricVals {
+		obsrv.Observe(v.val, v.measurementOption)
 	}
-	otelScalerMetricVal = OtelMetricFloat64Val{}
+	otelScalerMetricVals = []OtelMetricFloat64Val{}
 	return nil
 }
 
 func (o *OtelMetrics) RecordScalerMetric(namespace string, scaledResource string, scaler string, triggerIndex int, metric string, isScaledObject bool, value float64) {
-	otelScalerMetricVal.val = value
-	otelScalerMetricVal.measurementOption = getScalerMeasurementOption(namespace, scaledResource, scaler, triggerIndex, metric, isScaledObject)
+	otelScalerMetric := OtelMetricFloat64Val{}
+	otelScalerMetric.val = value
+	otelScalerMetric.measurementOption = getScalerMeasurementOption(namespace, scaledResource, scaler, triggerIndex, metric, isScaledObject)
+	otelScalerMetricVals = append(otelScalerMetricVals, otelScalerMetric)
 }
 
 func ScalerMetricsLatencyCallback(_ context.Context, obsrv api.Float64Observer) error {
-	if otelScalerMetricsLatencyVal.measurementOption != nil {
-		obsrv.Observe(otelScalerMetricsLatencyVal.val, otelScalerMetricsLatencyVal.measurementOption)
+	for _, v := range otelScalerMetricsLatencyVals {
+		obsrv.Observe(v.val, v.measurementOption)
 	}
-	otelScalerMetricsLatencyVal = OtelMetricFloat64Val{}
+	otelScalerMetricsLatencyVals = []OtelMetricFloat64Val{}
 	return nil
 }
 
 func ScalerMetricsLatencyCallbackDeprecated(_ context.Context, obsrv api.Float64Observer) error {
-	if otelScalerMetricsLatencyValDeprecated.measurementOption != nil {
-		obsrv.Observe(otelScalerMetricsLatencyValDeprecated.val, otelScalerMetricsLatencyValDeprecated.measurementOption)
+	for _, v := range otelScalerMetricsLatencyValDeprecated {
+		obsrv.Observe(v.val, v.measurementOption)
 	}
-	otelScalerMetricsLatencyValDeprecated = OtelMetricFloat64Val{}
+	otelScalerMetricsLatencyValDeprecated = []OtelMetricFloat64Val{}
 	return nil
 }
 
 // RecordScalerLatency create a measurement of the latency to external metric
 func (o *OtelMetrics) RecordScalerLatency(namespace string, scaledResource string, scaler string, triggerIndex int, metric string, isScaledObject bool, value time.Duration) {
-	otelScalerMetricsLatencyVal.val = value.Seconds()
-	otelScalerMetricsLatencyVal.measurementOption = getScalerMeasurementOption(namespace, scaledResource, scaler, triggerIndex, metric, isScaledObject)
-	otelScalerMetricsLatencyValDeprecated.val = float64(value.Milliseconds())
-	otelScalerMetricsLatencyValDeprecated.measurementOption = getScalerMeasurementOption(namespace, scaledResource, scaler, triggerIndex, metric, isScaledObject)
+	otelScalerMetricsLatency := OtelMetricFloat64Val{}
+	otelScalerMetricsLatency.val = value.Seconds()
+	otelScalerMetricsLatency.measurementOption = getScalerMeasurementOption(namespace, scaledResource, scaler, triggerIndex, metric, isScaledObject)
+	otelScalerMetricsLatencyVals = append(otelScalerMetricsLatencyVals, otelScalerMetricsLatency)
+
+	otelScalerMetricsLatencyValD := OtelMetricFloat64Val{}
+	otelScalerMetricsLatencyValD.val = float64(value.Milliseconds())
+	otelScalerMetricsLatencyValD.measurementOption = getScalerMeasurementOption(namespace, scaledResource, scaler, triggerIndex, metric, isScaledObject)
+	otelScalerMetricsLatencyValDeprecated = append(otelScalerMetricsLatencyValDeprecated, otelScalerMetricsLatencyValD)
 }
 
 func ScalableObjectLatencyCallback(_ context.Context, obsrv api.Float64Observer) error {
-	if otelInternalLoopLatencyVal.measurementOption != nil {
-		obsrv.Observe(otelInternalLoopLatencyVal.val, otelInternalLoopLatencyVal.measurementOption)
+	for _, v := range otelInternalLoopLatencyVals {
+		obsrv.Observe(v.val, v.measurementOption)
 	}
-	otelInternalLoopLatencyVal = OtelMetricFloat64Val{}
+	otelInternalLoopLatencyVals = []OtelMetricFloat64Val{}
 	return nil
 }
 
 func ScalableObjectLatencyCallbackDeprecated(_ context.Context, obsrv api.Float64Observer) error {
-	if otelInternalLoopLatencyValDeprecated.measurementOption != nil {
-		obsrv.Observe(otelInternalLoopLatencyValDeprecated.val, otelInternalLoopLatencyValDeprecated.measurementOption)
+	for _, v := range otelInternalLoopLatencyValDeprecated {
+		obsrv.Observe(v.val, v.measurementOption)
 	}
-	otelInternalLoopLatencyValDeprecated = OtelMetricFloat64Val{}
+	otelInternalLoopLatencyValDeprecated = []OtelMetricFloat64Val{}
 	return nil
 }
 
@@ -284,29 +301,43 @@ func (o *OtelMetrics) RecordScalableObjectLatency(namespace string, name string,
 		attribute.Key("type").String(resourceType),
 		attribute.Key("name").String(name))
 
-	otelInternalLoopLatencyVal.val = value.Seconds()
-	otelInternalLoopLatencyVal.measurementOption = opt
-	otelInternalLoopLatencyValDeprecated.val = float64(value.Milliseconds())
-	otelInternalLoopLatencyValDeprecated.measurementOption = opt
+	otelInternalLoopLatency := OtelMetricFloat64Val{}
+	otelInternalLoopLatency.val = value.Seconds()
+	otelInternalLoopLatency.measurementOption = opt
+	otelInternalLoopLatencyVals = append(otelInternalLoopLatencyVals, otelInternalLoopLatency)
+
+	otelInternalLoopLatencyD := OtelMetricFloat64Val{}
+	otelInternalLoopLatencyD.val = float64(value.Milliseconds())
+	otelInternalLoopLatencyD.measurementOption = opt
+	otelInternalLoopLatencyValDeprecated = append(otelInternalLoopLatencyValDeprecated, otelInternalLoopLatencyD)
 }
 
 func ScalerActiveCallback(_ context.Context, obsrv api.Float64Observer) error {
-	if otelScalerActiveVal.measurementOption != nil {
-		obsrv.Observe(otelScalerActiveVal.val, otelScalerActiveVal.measurementOption)
+	for _, v := range otelScalerActiveVals {
+		obsrv.Observe(v.val, v.measurementOption)
 	}
-	otelScalerActiveVal = OtelMetricFloat64Val{}
+	otelScalerActiveVals = []OtelMetricFloat64Val{}
 	return nil
 }
 
 // RecordScalerActive create a measurement of the activity of the scaler
 func (o *OtelMetrics) RecordScalerActive(namespace string, scaledResource string, scaler string, triggerIndex int, metric string, isScaledObject bool, active bool) {
-	activeVal := -1
+	activeVal := 0
 	if active {
 		activeVal = 1
 	}
+	otelScalerActive := OtelMetricFloat64Val{}
+	otelScalerActive.val = float64(activeVal)
+	otelScalerActive.measurementOption = getScalerMeasurementOption(namespace, scaledResource, scaler, triggerIndex, metric, isScaledObject)
+	otelScalerActiveVals = append(otelScalerActiveVals, otelScalerActive)
+}
 
-	otelScalerActiveVal.val = float64(activeVal)
-	otelScalerActiveVal.measurementOption = getScalerMeasurementOption(namespace, scaledResource, scaler, triggerIndex, metric, isScaledObject)
+func PausedStatusCallback(_ context.Context, obsrv api.Float64Observer) error {
+	for _, v := range otelScalerPauseVals {
+		obsrv.Observe(v.val, v.measurementOption)
+	}
+	otelScalerPauseVals = []OtelMetricFloat64Val{}
+	return nil
 }
 
 // RecordScaledObjectPaused marks whether the current ScaledObject is paused.
@@ -318,21 +349,12 @@ func (o *OtelMetrics) RecordScaledObjectPaused(namespace string, scaledObject st
 
 	opt := api.WithAttributes(
 		attribute.Key("namespace").String(namespace),
-		attribute.Key("scaledObject").String(scaledObject),
-	)
+		attribute.Key("scaledObject").String(scaledObject))
 
-	cback := func(_ context.Context, obsrv api.Float64Observer) error {
-		obsrv.Observe(float64(activeVal), opt)
-		return nil
-	}
-	_, err := meter.Float64ObservableGauge(
-		"keda.scaled.object.paused",
-		api.WithDescription("Indicates whether a ScaledObject is paused"),
-		api.WithFloat64Callback(cback),
-	)
-	if err != nil {
-		otLog.Error(err, "failed to register scaled object paused metric", "namespace", namespace, "scaledObject", scaledObject)
-	}
+	otelScalerPause := OtelMetricFloat64Val{}
+	otelScalerPause.val = float64(activeVal)
+	otelScalerPause.measurementOption = opt
+	otelScalerPauseVals = append(otelScalerPauseVals, otelScalerPause)
 }
 
 // RecordScalerError counts the number of errors occurred in trying to get an external metric used by the HPA
@@ -448,10 +470,10 @@ func (o *OtelMetrics) RecordCloudEventEmittedError(namespace string, cloudevents
 }
 
 func CloudeventQueueStatusCallback(_ context.Context, obsrv api.Float64Observer) error {
-	if otCloudEventQueueStatusVal.measurementOption != nil {
-		obsrv.Observe(otCloudEventQueueStatusVal.val, otCloudEventQueueStatusVal.measurementOption)
+	for _, v := range otCloudEventQueueStatusVals {
+		obsrv.Observe(v.val, v.measurementOption)
 	}
-	otCloudEventQueueStatusVal = OtelMetricFloat64Val{}
+	otCloudEventQueueStatusVals = []OtelMetricFloat64Val{}
 	return nil
 }
 
@@ -461,6 +483,8 @@ func (o *OtelMetrics) RecordCloudEventQueueStatus(namespace string, value int) {
 		attribute.Key("namespace").String(namespace),
 	)
 
-	otCloudEventQueueStatusVal.val = float64(value)
-	otCloudEventQueueStatusVal.measurementOption = opt
+	otCloudEventQueueStatus := OtelMetricFloat64Val{}
+	otCloudEventQueueStatus.val = float64(value)
+	otCloudEventQueueStatus.measurementOption = opt
+	otCloudEventQueueStatusVals = append(otCloudEventQueueStatusVals, otCloudEventQueueStatus)
 }

pkg/metricscollector/opentelemetry_test.go

@@ -102,3 +102,56 @@ func TestLoopLatency(t *testing.T) {
 	data = latencySeconds.Data.(metricdata.Gauge[float64]).DataPoints[0]
 	assert.Equal(t, data.Value, float64(0.5))
 }
+
+func TestContinuousMetrics(t *testing.T) {
+	testOtel.RecordScalerActive("testnamespace", "testresource", "testscaler", 0, "testmetric", true, true)
+	testOtel.RecordScalerActive("testnamespace2", "testresource2", "testscaler2", 0, "testmetric", false, false)
+	got := metricdata.ResourceMetrics{}
+	err := testReader.Collect(context.Background(), &got)
+
+	assert.Nil(t, err)
+	scopeMetrics := got.ScopeMetrics[0]
+	assert.NotEqual(t, len(scopeMetrics.Metrics), 0)
+	activeMetric := retrieveMetric(scopeMetrics.Metrics, "keda.scaler.active")
+
+	assert.NotNil(t, buildInfo)
+
+	dataPoints := activeMetric.Data.(metricdata.Gauge[float64]).DataPoints
+	assert.Len(t, dataPoints, 2)
+
+	var scaledObjectMetric metricdata.DataPoint[float64]
+	for _, v := range dataPoints {
+		attribute, _ := v.Attributes.Value("namespace")
+		if attribute.AsString() == "testnamespace" {
+			scaledObjectMetric = v
+		}
+	}
+
+	assert.NotEqual(t, scaledObjectMetric, metricdata.DataPoint[float64]{})
+	attribute, _ := scaledObjectMetric.Attributes.Value("scaledObject")
+	assert.Equal(t, attribute.AsString(), "testresource")
+	attribute, _ = scaledObjectMetric.Attributes.Value("scaler")
+	assert.Equal(t, attribute.AsString(), "testscaler")
+	attribute, _ = scaledObjectMetric.Attributes.Value("metric")
+	assert.Equal(t, attribute.AsString(), "testmetric")
+	assert.Equal(t, scaledObjectMetric.Value, 1.0)
+
+	var scaledJobMetric metricdata.DataPoint[float64]
+	for _, v := range dataPoints {
+		attribute, _ := v.Attributes.Value("namespace")
+		if attribute.AsString() == "testnamespace2" {
+			scaledJobMetric = v
+		}
+	}
+
+	assert.NotEqual(t, scaledJobMetric, metricdata.DataPoint[float64]{})
+	attribute, _ = scaledJobMetric.Attributes.Value("namespace")
+	assert.Equal(t, attribute.AsString(), "testnamespace2")
+	attribute, _ = scaledJobMetric.Attributes.Value("scaledJob")
+	assert.Equal(t, attribute.AsString(), "testresource2")
+	attribute, _ = scaledJobMetric.Attributes.Value("scaler")
+	assert.Equal(t, attribute.AsString(), "testscaler2")
+	attribute, _ = scaledJobMetric.Attributes.Value("metric")
+	assert.Equal(t, attribute.AsString(), "testmetric")
+	assert.Equal(t, scaledJobMetric.Value, 0.0)
+}

tests/sequential/opentelemetry_metrics/opentelemetry_metrics_test.go

@@ -450,7 +450,7 @@ func TestOpenTelemetryMetrics(t *testing.T) {
 
 	testScalerMetricValue(t)
 	testScalerMetricLatency(t)
-	testScalerActiveMetric(t)
+	testScalerActiveMetric(t, kc)
 	testScaledObjectErrors(t, data)
 	testScaledJobErrors(t, data)
 	testScalerErrors(t, data)
@@ -748,28 +748,20 @@ func testScalableObjectMetrics(t *testing.T) {
 	}
 }
 
-func testScalerActiveMetric(t *testing.T) {
+func testScalerActiveMetric(t *testing.T, kc *kubernetes.Clientset) {
 	t.Log("--- testing scaler active metric ---")
 
-	family := fetchAndParsePrometheusMetrics(t, fmt.Sprintf("curl --insecure %s", kedaOperatorCollectorPrometheusExportURL))
+	families := fetchAndParsePrometheusMetrics(t, fmt.Sprintf("curl --insecure %s", kedaOperatorCollectorPrometheusExportURL))
+	assertScaledObjectFlagMetric(t, families, scaledObjectName, "keda_scaler_active", true)
 
-	val, ok := family["keda_scaler_active"]
-	assert.True(t, ok, "keda_scaler_active not available")
-	if ok {
-		var found bool
-		metrics := val.GetMetric()
-		for _, metric := range metrics {
-			labels := metric.GetLabel()
-			for _, label := range labels {
-				if (*label.Name == labelScaledObject && *label.Value == scaledObjectName) ||
-					(*label.Name == labelScaledJob && *label.Value == scaledJobName) {
-					assert.Equal(t, float64(1), *metric.Gauge.Value)
-					found = true
-				}
-			}
-		}
-		assert.Equal(t, true, found)
-	}
+	t.Log("--- testing scaler active metric scaled down ---")
+	KubernetesScaleDeployment(t, kc, monitoredDeploymentName, 0, testNamespace)
+	WaitForDeploymentReplicaReadyCount(t, kc, deploymentName, testNamespace, 0, 60, 2)
+	time.Sleep(10 * time.Second)
+	families = fetchAndParsePrometheusMetrics(t, fmt.Sprintf("curl --insecure %s", kedaOperatorCollectorPrometheusExportURL))
+
+	assertScaledObjectFlagMetric(t, families, scaledObjectName, "keda_scaler_active", false)
+	KubernetesScaleDeployment(t, kc, monitoredDeploymentName, 4, testNamespace)
 }
 
 func testScaledObjectPausedMetric(t *testing.T, data templateData) {
@@ -781,15 +773,15 @@ func testScaledObjectPausedMetric(t *testing.T, data templateData) {
 	time.Sleep(20 * time.Second)
 	// Check that the paused metric is now true
 	families := fetchAndParsePrometheusMetrics(t, fmt.Sprintf("curl --insecure %s", kedaOperatorCollectorPrometheusExportURL))
-	assertScaledObjectPausedMetric(t, families, scaledObjectName, true)
+	assertScaledObjectFlagMetric(t, families, scaledObjectName, "keda_scaled_object_paused", true)
 
 	// Unpause the ScaledObject
 	KubectlApplyWithTemplate(t, data, "scaledObjectTemplate", scaledObjectTemplate)
 
 	time.Sleep(20 * time.Second)
 	// Check that the paused metric is back to false
 	families = fetchAndParsePrometheusMetrics(t, fmt.Sprintf("curl --insecure %s", kedaOperatorCollectorPrometheusExportURL))
-	assertScaledObjectPausedMetric(t, families, scaledObjectName, false)
+	assertScaledObjectFlagMetric(t, families, scaledObjectName, "keda_scaled_object_paused", false)
 }
 
 func testOperatorMetrics(t *testing.T, kc *kubernetes.Clientset, data templateData) {
@@ -970,16 +962,17 @@ func checkCRTotalValues(t *testing.T, families map[string]*prommodel.MetricFamil
 	}
 }
 
-func assertScaledObjectPausedMetric(t *testing.T, families map[string]*prommodel.MetricFamily, scaledObjectName string, expected bool) {
-	family, ok := families["keda_scaled_object_paused"]
-	assert.True(t, ok, "keda_scaled_object_paused not available")
+func assertScaledObjectFlagMetric(t *testing.T, families map[string]*prommodel.MetricFamily, scaledObjectName string, metricName string, expected bool) {
+	family, ok := families[metricName]
+	assert.True(t, ok, "%s not available", metricName)
 	if !ok {
 		return
 	}
 
 	metricValue := 0.0
 	metrics := family.GetMetric()
 	for _, metric := range metrics {
+		t.Log("scaledobject flag metric detail info ---", "metric", metric, "scaledObjectName", scaledObjectName, "metricName", metricName)
 		labels := metric.GetLabel()
 		for _, label := range labels {
 			if *label.Name == labelScaledObject && *label.Value == scaledObjectName {