Implement autoscaling/v2beta2 features in HPA controller

pkg/controller/podautoscaler/BUILD

-package(default_visibility = ["//visibility:public"])
-
-load(
-    "@io_bazel_rules_go//go:def.bzl",
-    "go_library",
-    "go_test",
-)
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
@@ -15,13 +9,14 @@ go_library(
         "replica_calculator.go",
     ],
     importpath = "k8s.io/kubernetes/pkg/controller/podautoscaler",
+    visibility = ["//visibility:public"],
     deps = [
         "//pkg/api/legacyscheme:go_default_library",
         "//pkg/api/v1/pod:go_default_library",
         "//pkg/controller:go_default_library",
         "//pkg/controller/podautoscaler/metrics:go_default_library",
         "//staging/src/k8s.io/api/autoscaling/v1:go_default_library",
-        "//staging/src/k8s.io/api/autoscaling/v2beta1:go_default_library",
+        "//staging/src/k8s.io/api/autoscaling/v2beta2:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/equality:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/errors:go_default_library",
@@ -66,6 +61,7 @@ go_test(
         "//pkg/controller/podautoscaler/metrics:go_default_library",
         "//staging/src/k8s.io/api/autoscaling/v1:go_default_library",
         "//staging/src/k8s.io/api/autoscaling/v2beta1:go_default_library",
+        "//staging/src/k8s.io/api/autoscaling/v2beta2:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/meta/testrestmapper:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/resource:go_default_library",
@@ -80,7 +76,7 @@ go_test(
         "//staging/src/k8s.io/client-go/rest:go_default_library",
         "//staging/src/k8s.io/client-go/scale/fake:go_default_library",
         "//staging/src/k8s.io/client-go/testing:go_default_library",
-        "//staging/src/k8s.io/metrics/pkg/apis/custom_metrics/v1beta1:go_default_library",
+        "//staging/src/k8s.io/metrics/pkg/apis/custom_metrics/v1beta2:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/apis/external_metrics/v1beta1:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/apis/metrics/v1alpha1:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/apis/metrics/v1beta1:go_default_library",
@@ -107,4 +103,5 @@ filegroup(
         "//pkg/controller/podautoscaler/metrics:all-srcs",
     ],
     tags = ["automanaged"],
+    visibility = ["//visibility:public"],
 )

pkg/controller/podautoscaler/legacy_replica_calculator_test.go

@@ -210,7 +210,7 @@ func (tc *legacyReplicaCalcTestCase) runTest(t *testing.T) {
 		assert.True(t, tc.timestamp.Equal(outTimestamp), "timestamp should be as expected")
 
 	} else {
-		outReplicas, outUtilization, outTimestamp, err := replicaCalc.GetMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, selector)
+		outReplicas, outUtilization, outTimestamp, err := replicaCalc.GetMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, selector, nil)
 
 		if tc.expectedError != nil {
 			require.Error(t, err, "there should be an error calculating the replica count")

pkg/controller/podautoscaler/metrics/BUILD

-package(default_visibility = ["//visibility:public"])
-
-load(
-    "@io_bazel_rules_go//go:def.bzl",
-    "go_library",
-    "go_test",
-)
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
@@ -15,15 +9,16 @@ go_library(
         "utilization.go",
     ],
     importpath = "k8s.io/kubernetes/pkg/controller/podautoscaler/metrics",
+    visibility = ["//visibility:public"],
     deps = [
-        "//staging/src/k8s.io/api/autoscaling/v2beta1:go_default_library",
+        "//staging/src/k8s.io/api/autoscaling/v2beta2:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/labels:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
         "//staging/src/k8s.io/client-go/kubernetes:go_default_library",
         "//staging/src/k8s.io/client-go/kubernetes/typed/core/v1:go_default_library",
-        "//staging/src/k8s.io/metrics/pkg/apis/custom_metrics/v1beta1:go_default_library",
+        "//staging/src/k8s.io/metrics/pkg/apis/custom_metrics/v1beta2:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/apis/metrics/v1alpha1:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/client/clientset/versioned/typed/metrics/v1beta1:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/client/custom_metrics:go_default_library",
@@ -44,7 +39,7 @@ go_test(
     deps = [
         "//pkg/api/legacyscheme:go_default_library",
         "//pkg/apis/extensions/install:go_default_library",
-        "//staging/src/k8s.io/api/autoscaling/v2beta1:go_default_library",
+        "//staging/src/k8s.io/api/autoscaling/v2beta2:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/meta/testrestmapper:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/resource:go_default_library",
@@ -55,7 +50,7 @@ go_test(
         "//staging/src/k8s.io/client-go/kubernetes/fake:go_default_library",
         "//staging/src/k8s.io/client-go/rest:go_default_library",
         "//staging/src/k8s.io/client-go/testing:go_default_library",
-        "//staging/src/k8s.io/metrics/pkg/apis/custom_metrics/v1beta1:go_default_library",
+        "//staging/src/k8s.io/metrics/pkg/apis/custom_metrics/v1beta2:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/apis/external_metrics/v1beta1:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/apis/metrics/v1alpha1:go_default_library",
         "//staging/src/k8s.io/metrics/pkg/apis/metrics/v1beta1:go_default_library",
@@ -78,4 +73,5 @@ filegroup(
     name = "all-srcs",
     srcs = [":package-srcs"],
     tags = ["automanaged"],
+    visibility = ["//visibility:public"],
 )

pkg/controller/podautoscaler/metrics/interfaces.go

@@ -19,7 +19,7 @@ package metrics
 import (
 	"time"
 
-	autoscaling "k8s.io/api/autoscaling/v2beta1"
+	autoscaling "k8s.io/api/autoscaling/v2beta2"
 	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/labels"
 )
@@ -37,11 +37,11 @@ type MetricsClient interface {
 
 	// GetRawMetric gets the given metric (and an associated oldest timestamp)
 	// for all pods matching the specified selector in the given namespace
-	GetRawMetric(metricName string, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)
+	GetRawMetric(metricName string, namespace string, selector labels.Selector, metricSelector labels.Selector) (PodMetricsInfo, time.Time, error)
 
 	// GetObjectMetric gets the given metric (and an associated timestamp) for the given
 	// object in the given namespace
-	GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (int64, time.Time, error)
+	GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference, metricSelector labels.Selector) (int64, time.Time, error)
 
 	// GetExternalMetric gets all the values of a given external metric
 	// that match the specified selector.

pkg/controller/podautoscaler/metrics/legacy_metrics_client.go

@@ -26,7 +26,7 @@ import (
 	heapster "k8s.io/heapster/metrics/api/v1/types"
 	metricsapi "k8s.io/metrics/pkg/apis/metrics/v1alpha1"
 
-	autoscaling "k8s.io/api/autoscaling/v2beta1"
+	autoscaling "k8s.io/api/autoscaling/v2beta2"
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
@@ -109,7 +109,7 @@ func (h *HeapsterMetricsClient) GetResourceMetric(resource v1.ResourceName, name
 	return res, timestamp, nil
 }
 
-func (h *HeapsterMetricsClient) GetRawMetric(metricName string, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error) {
+func (h *HeapsterMetricsClient) GetRawMetric(metricName string, namespace string, selector labels.Selector, metricSelector labels.Selector) (PodMetricsInfo, time.Time, error) {
 	podList, err := h.podsGetter.Pods(namespace).List(metav1.ListOptions{LabelSelector: selector.String()})
 	if err != nil {
 		return nil, time.Time{}, fmt.Errorf("failed to get pod list while fetching metrics: %v", err)
@@ -173,7 +173,7 @@ func (h *HeapsterMetricsClient) GetRawMetric(metricName string, namespace string
 	return res, *timestamp, nil
 }
 
-func (h *HeapsterMetricsClient) GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (int64, time.Time, error) {
+func (h *HeapsterMetricsClient) GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference, metricSelector labels.Selector) (int64, time.Time, error) {
 	return 0, time.Time{}, fmt.Errorf("object metrics are not yet supported")
 }
 

pkg/controller/podautoscaler/metrics/legacy_metrics_client_test.go

@@ -73,6 +73,7 @@ type testCase struct {
 
 	namespace      string
 	selector       labels.Selector
+	metricSelector labels.Selector
 	resourceName   v1.ResourceName
 	metricName     string
 }
@@ -211,7 +212,7 @@ func (tc *testCase) runTest(t *testing.T) {
 		info, timestamp, err := metricsClient.GetResourceMetric(tc.resourceName, tc.namespace, tc.selector)
 		tc.verifyResults(t, info, timestamp, err)
 	} else {
-		info, timestamp, err := metricsClient.GetRawMetric(tc.metricName, tc.namespace, tc.selector)
+		info, timestamp, err := metricsClient.GetRawMetric(tc.metricName, tc.namespace, tc.selector, tc.metricSelector)
 		tc.verifyResults(t, info, timestamp, err)
 	}
 }

pkg/controller/podautoscaler/metrics/rest_metrics_client.go

@@ -22,12 +22,12 @@ import (
 
 	"github.com/golang/glog"
 
-	autoscaling "k8s.io/api/autoscaling/v2beta1"
+	autoscaling "k8s.io/api/autoscaling/v2beta2"
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	customapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
+	customapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta2"
 	resourceclient "k8s.io/metrics/pkg/client/clientset/versioned/typed/metrics/v1beta1"
 	customclient "k8s.io/metrics/pkg/client/custom_metrics"
 	externalclient "k8s.io/metrics/pkg/client/external_metrics"
@@ -101,8 +101,8 @@ type customMetricsClient struct {
 
 // GetRawMetric gets the given metric (and an associated oldest timestamp)
 // for all pods matching the specified selector in the given namespace
-func (c *customMetricsClient) GetRawMetric(metricName string, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error) {
-	metrics, err := c.client.NamespacedMetrics(namespace).GetForObjects(schema.GroupKind{Kind: "Pod"}, selector, metricName)
+func (c *customMetricsClient) GetRawMetric(metricName string, namespace string, selector labels.Selector, metricSelector labels.Selector) (PodMetricsInfo, time.Time, error) {
+	metrics, err := c.client.NamespacedMetrics(namespace).GetForObjects(schema.GroupKind{Kind: "Pod"}, selector, metricName, metricSelector)
 	if err != nil {
 		return nil, time.Time{}, fmt.Errorf("unable to fetch metrics from custom metrics API: %v", err)
 	}
@@ -123,7 +123,7 @@ func (c *customMetricsClient) GetRawMetric(metricName string, namespace string,
 
 // GetObjectMetric gets the given metric (and an associated timestamp) for the given
 // object in the given namespace
-func (c *customMetricsClient) GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (int64, time.Time, error) {
+func (c *customMetricsClient) GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference, metricSelector labels.Selector) (int64, time.Time, error) {
 	gvk := schema.FromAPIVersionAndKind(objectRef.APIVersion, objectRef.Kind)
 	var metricValue *customapi.MetricValue
 	var err error
@@ -131,9 +131,9 @@ func (c *customMetricsClient) GetObjectMetric(metricName string, namespace strin
 		// handle namespace separately
 		// NB: we ignore namespace name here, since CrossVersionObjectReference isn't
 		// supposed to allow you to escape your namespace
-		metricValue, err = c.client.RootScopedMetrics().GetForObject(gvk.GroupKind(), namespace, metricName)
+		metricValue, err = c.client.RootScopedMetrics().GetForObject(gvk.GroupKind(), namespace, metricName, metricSelector)
 	} else {
-		metricValue, err = c.client.NamespacedMetrics(namespace).GetForObject(gvk.GroupKind(), objectRef.Name, metricName)
+		metricValue, err = c.client.NamespacedMetrics(namespace).GetForObject(gvk.GroupKind(), objectRef.Name, metricName, metricSelector)
 	}
 
 	if err != nil {

pkg/controller/podautoscaler/metrics/rest_metrics_client_test.go

@@ -21,7 +21,7 @@ import (
 	"testing"
 	"time"
 
-	autoscalingapi "k8s.io/api/autoscaling/v2beta1"
+	autoscalingapi "k8s.io/api/autoscaling/v2beta2"
 	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/meta/testrestmapper"
 	"k8s.io/apimachinery/pkg/api/resource"
@@ -32,7 +32,7 @@ import (
 	core "k8s.io/client-go/testing"
 	"k8s.io/kubernetes/pkg/api/legacyscheme"
 	_ "k8s.io/kubernetes/pkg/apis/extensions/install"
-	cmapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
+	cmapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta2"
 	emapi "k8s.io/metrics/pkg/apis/external_metrics/v1beta1"
 	metricsapi "k8s.io/metrics/pkg/apis/metrics/v1beta1"
 	metricsfake "k8s.io/metrics/pkg/client/clientset/versioned/fake"
@@ -145,7 +145,9 @@ func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clie
 						},
 						Value:     *resource.NewMilliQuantity(int64(metricPoint.level), resource.DecimalSI),
 						Timestamp: metav1.Time{Time: timestamp},
-						MetricName: tc.metricName,
+						Metric: cmapi.MetricIdentifier{
+							Name: tc.metricName,
+						},
 					}
 
 					metrics.Items = append(metrics.Items, metric)
@@ -177,7 +179,9 @@ func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clie
 								Name:       tc.singleObject.Name,
 							},
 							Timestamp: metav1.Time{Time: timestamp},
-							MetricName: tc.metricName,
+							Metric: cmapi.MetricIdentifier{
+								Name: tc.metricName,
+							},
 							Value: *resource.NewMilliQuantity(int64(metricPoint.level), resource.DecimalSI),
 						},
 					},
@@ -227,10 +231,10 @@ func (tc *restClientTestCase) runTest(t *testing.T) {
 		}
 		tc.verifyResults(t, info, timestamp, err)
 	} else if tc.singleObject == nil {
-		info, timestamp, err := metricsClient.GetRawMetric(tc.metricName, tc.namespace, tc.selector)
+		info, timestamp, err := metricsClient.GetRawMetric(tc.metricName, tc.namespace, tc.selector, tc.metricLabelSelector)
 		tc.verifyResults(t, info, timestamp, err)
 	} else {
-		val, timestamp, err := metricsClient.GetObjectMetric(tc.metricName, tc.namespace, tc.singleObject)
+		val, timestamp, err := metricsClient.GetObjectMetric(tc.metricName, tc.namespace, tc.singleObject, tc.metricLabelSelector)
 		info := PodMetricsInfo{tc.singleObject.Name: val}
 		tc.verifyResults(t, info, timestamp, err)
 	}

pkg/controller/podautoscaler/replica_calculator.go

@@ -22,7 +22,7 @@ import (
 	"time"
 
 	"github.com/golang/glog"
-	autoscaling "k8s.io/api/autoscaling/v2beta1"
+	autoscaling "k8s.io/api/autoscaling/v2beta2"
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
@@ -159,8 +159,8 @@ func (c *ReplicaCalculator) GetRawResourceReplicas(currentReplicas int32, target
 // GetMetricReplicas calculates the desired replica count based on a target metric utilization
 // (as a milli-value) for pods matching the given selector in the given namespace, and the
 // current replica count
-func (c *ReplicaCalculator) GetMetricReplicas(currentReplicas int32, targetUtilization int64, metricName string, namespace string, selector labels.Selector) (replicaCount int32, utilization int64, timestamp time.Time, err error) {
-	metrics, timestamp, err := c.metricsClient.GetRawMetric(metricName, namespace, selector)
+func (c *ReplicaCalculator) GetMetricReplicas(currentReplicas int32, targetUtilization int64, metricName string, namespace string, selector labels.Selector, metricSelector labels.Selector) (replicaCount int32, utilization int64, timestamp time.Time, err error) {
+	metrics, timestamp, err := c.metricsClient.GetRawMetric(metricName, namespace, selector, metricSelector)
 	if err != nil {
 		return 0, 0, time.Time{}, fmt.Errorf("unable to get metric %s: %v", metricName, err)
 	}
@@ -238,8 +238,8 @@ func (c *ReplicaCalculator) calcPlainMetricReplicas(metrics metricsclient.PodMet
 
 // GetObjectMetricReplicas calculates the desired replica count based on a target metric utilization (as a milli-value)
 // for the given object in the given namespace, and the current replica count.
-func (c *ReplicaCalculator) GetObjectMetricReplicas(currentReplicas int32, targetUtilization int64, metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference, selector labels.Selector) (replicaCount int32, utilization int64, timestamp time.Time, err error) {
-	utilization, timestamp, err = c.metricsClient.GetObjectMetric(metricName, namespace, objectRef)
+func (c *ReplicaCalculator) GetObjectMetricReplicas(currentReplicas int32, targetUtilization int64, metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference, selector labels.Selector, metricSelector labels.Selector) (replicaCount int32, utilization int64, timestamp time.Time, err error) {
+	utilization, timestamp, err = c.metricsClient.GetObjectMetric(metricName, namespace, objectRef, metricSelector)
 	if err != nil {
 		return 0, 0, time.Time{}, fmt.Errorf("unable to get metric %s: %v on %s %s/%s", metricName, objectRef.Kind, namespace, objectRef.Name, err)
 	}

pkg/controller/podautoscaler/replica_calculator_test.go

@@ -22,20 +22,20 @@ import (
 	"testing"
 	"time"
 
-	autoscalingv2 "k8s.io/api/autoscaling/v2beta1"
+	autoscalingv2 "k8s.io/api/autoscaling/v2beta2"
 	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/meta/testrestmapper"
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/client-go/kubernetes/fake"
 	core "k8s.io/client-go/testing"
 	"k8s.io/kubernetes/pkg/api/legacyscheme"
-	"k8s.io/kubernetes/pkg/controller/podautoscaler/metrics"
 	metricsclient "k8s.io/kubernetes/pkg/controller/podautoscaler/metrics"
-	cmapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
+	cmapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta2"
 	emapi "k8s.io/metrics/pkg/apis/external_metrics/v1beta1"
 	metricsapi "k8s.io/metrics/pkg/apis/metrics/v1beta1"
 	metricsfake "k8s.io/metrics/pkg/client/clientset/versioned/fake"
@@ -88,6 +88,7 @@ type replicaCalcTestCase struct {
 
 	resource            *resourceInfo
 	metric              *metricInfo
+	metricLabelSelector labels.Selector
 
 	podReadiness []v1.ConditionStatus
 	podStartTime []metav1.Time
@@ -236,7 +237,9 @@ func (tc *replicaCalcTestCase) prepareTestCMClient(t *testing.T) *cmfake.FakeCus
 						Namespace: testNamespace,
 					},
 					Timestamp: metav1.Time{Time: tc.timestamp},
-					MetricName: tc.metric.name,
+					Metric: cmapi.MetricIdentifier{
+						Name: tc.metric.name,
+					},
 					Value: *resource.NewMilliQuantity(level, resource.DecimalSI),
 				}
 				metrics.Items = append(metrics.Items, podMetric)
@@ -266,7 +269,9 @@ func (tc *replicaCalcTestCase) prepareTestCMClient(t *testing.T) *cmfake.FakeCus
 					Name:       name,
 				},
 				Timestamp: metav1.Time{Time: tc.timestamp},
-				MetricName: tc.metric.name,
+				Metric: cmapi.MetricIdentifier{
+					Name: tc.metric.name,
+				},
 				Value: *resource.NewMilliQuantity(int64(tc.metric.levels[0]), resource.DecimalSI),
 			},
 		}
@@ -322,7 +327,7 @@ func (tc *replicaCalcTestCase) prepareTestClient(t *testing.T) (*fake.Clientset,
 
 func (tc *replicaCalcTestCase) runTest(t *testing.T) {
 	testClient, testMetricsClient, testCMClient, testEMClient := tc.prepareTestClient(t)
-	metricsClient := metrics.NewRESTMetricsClient(testMetricsClient.MetricsV1beta1(), testCMClient, testEMClient)
+	metricsClient := metricsclient.NewRESTMetricsClient(testMetricsClient.MetricsV1beta1(), testCMClient, testEMClient)
 
 	replicaCalc := NewReplicaCalculator(metricsClient, testClient.Core(), defaultTestingTolerance, defaultTestingCpuTaintAfterStart, defaultTestingDelayOfInitialReadinessStatus)
 
@@ -357,7 +362,7 @@ func (tc *replicaCalcTestCase) runTest(t *testing.T) {
 		if tc.metric.singleObject == nil {
 			t.Fatal("Metric specified as objectMetric but metric.singleObject is nil.")
 		}
-		outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetObjectMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.singleObject, selector)
+		outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetObjectMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.singleObject, selector, nil)
 	case externalMetric:
 		if tc.metric.selector == nil {
 			t.Fatal("Metric specified as externalMetric but metric.selector is nil.")
@@ -376,7 +381,7 @@ func (tc *replicaCalcTestCase) runTest(t *testing.T) {
 
 		outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetExternalPerPodMetricReplicas(tc.currentReplicas, tc.metric.perPodTargetUtilization, tc.metric.name, testNamespace, tc.metric.selector)
 	case podMetric:
-		outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, selector)
+		outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, selector, nil)
 	default:
 		t.Fatalf("Unknown metric type: %d", tc.metric.metricType)
 	}