Add Equal funtion to metrics

pkg/metrics/api_server_metrics.go

@@ -50,6 +50,10 @@ var KnownApiServerMetrics = map[string][]string{
 
 type ApiServerMetrics Metrics
 
+func (m *ApiServerMetrics) Equal(o ApiServerMetrics) bool {
+	return (*Metrics)(m).Equal(Metrics(o))
+}
+
 func NewApiServerMetrics() ApiServerMetrics {
 	result := NewMetrics()
 	for metric := range KnownApiServerMetrics {

pkg/metrics/controller_manager_metrics.go

@@ -42,6 +42,10 @@ var KnownControllerManagerMetrics = map[string][]string{
 
 type ControllerManagerMetrics Metrics
 
+func (m *ControllerManagerMetrics) Equal(o ControllerManagerMetrics) bool {
+	return (*Metrics)(m).Equal(Metrics(o))
+}
+
 func NewControllerManagerMetrics() ControllerManagerMetrics {
 	result := NewMetrics()
 	for metric := range KnownControllerManagerMetrics {

pkg/metrics/generic_metrics.go

@@ -19,6 +19,7 @@ package metrics
 import (
 	"fmt"
 	"io"
+	"reflect"
 	"strings"
 
 	"k8s.io/kubernetes/pkg/util/sets"
@@ -58,6 +59,26 @@ var CommonMetrics = map[string][]string{
 
 type Metrics map[string]model.Samples
 
+func (m *Metrics) Equal(o Metrics) bool {
+	leftKeySet := []string{}
+	rightKeySet := []string{}
+	for k := range *m {
+		leftKeySet = append(leftKeySet, k)
+	}
+	for k := range o {
+		rightKeySet = append(rightKeySet, k)
+	}
+	if !reflect.DeepEqual(leftKeySet, rightKeySet) {
+		return false
+	}
+	for _, k := range leftKeySet {
+		if !(*m)[k].Equal(o[k]) {
+			return false
+		}
+	}
+	return true
+}
+
 func PrintSample(sample *model.Sample) string {
 	buf := make([]string, 0)
 	// Id is a VERY special label. For 'normal' container it's usless, but it's necessary

pkg/metrics/kubelet_metrics.go

@@ -110,6 +110,10 @@ var KubeletMetricsLabelsToSkip = sets.NewString(
 
 type KubeletMetrics Metrics
 
+func (m *KubeletMetrics) Equal(o KubeletMetrics) bool {
+	return (*Metrics)(m).Equal(Metrics(o))
+}
+
 func NewKubeletMetrics() KubeletMetrics {
 	result := NewMetrics()
 	for metric := range KnownKubeletMetrics {

pkg/metrics/scheduler_metrics.go

@@ -41,6 +41,10 @@ var KnownSchedulerMetrics = map[string][]string{
 
 type SchedulerMetrics Metrics
 
+func (m *SchedulerMetrics) Equal(o SchedulerMetrics) bool {
+	return (*Metrics)(m).Equal(Metrics(o))
+}
+
 func NewSchedulerMetrics() SchedulerMetrics {
 	result := NewMetrics()
 	for metric := range KnownSchedulerMetrics {