CacheSize,
		unschedulableReasons,
		PluginEvaluationTotal,
	}
)

var registerMetrics sync.Once

// Register all metrics.
func Register() {
	// Register the metrics.
	registerMetrics.Do(func() {
		RegisterMetrics(metricsList...)
		volumebindingmetrics.RegisterVolumeSchedulingMetrics()
	})
}

// RegisterMetrics registers a list of metrics.

			StabilityLevel: compbasemetrics.ALPHA,
		},
		[]string{"resource"},
	)
)

var registerMetrics sync.Once

// Register all metrics.
func Register() {
	// Register the metrics.
	registerMetrics.Do(func() {
		legacyregistry.MustRegister(etcdRequestLatency)
		legacyregistry.MustRegister(etcdRequestCounts)
		legacyregistry.MustRegister(etcdRequestErrorCounts)

)

var registerMetricsOnce sync.Once

// RegisterMetrics registers kube-proxy metrics.
func RegisterMetrics(mode kubeproxyconfig.ProxyMode) {
	registerMetricsOnce.Do(func() {
		// Core kube-proxy metrics for all backends
		legacyregistry.MustRegister(SyncProxyRulesLatency)

	}
}

type serverTest struct {
	server      httpServer
	url         url
	tracking200 int
	tracking503 int
}

func TestHealthzServer(t *testing.T) {
	metrics.RegisterMetrics("")
	listener := newFakeListener()
	httpFactory := newFakeHTTPServerFactory()
	fakeClock := testingclock.NewFakeClock(time.Now())

	utilruntime.Must(apiserverv1.AddToScheme(configScheme))
	codecs = serializer.NewCodecFactory(configScheme, serializer.EnableStrict)
	envelopemetrics.RegisterMetrics()
	storagevalue.RegisterMetrics()
	metrics.RegisterMetrics()
}

type kmsPluginHealthzResponse struct {
	err      error
	received time.Time
}

type kmsPluginProbe struct {
	name         string

		gcCheckPeriod:          gcCheckPeriod,
		quarantineTime:         quarantineTime,
	}

	// Register prometheus metrics
	metrics.RegisterMetrics()
	return gcc
}

func (gcc *PodGCController) Run(ctx context.Context) {
	logger := klog.FromContext(ctx)

	defer utilruntime.HandleCrash()

	logger.Info("Starting GC controller")

	additionalInitializers []admission.PluginInitializer,
) (
	*Config,
	[]admission.PluginInitializer,
	error,
) {
	proxyTransport := CreateProxyTransport()

	opts.Metrics.Apply()
	serviceaccount.RegisterMetrics()

	config := &Config{
		Generic: genericConfig,
		Extra: Extra{
			APIResourceConfigSource: storageFactory.APIResourceConfigSource,
			StorageFactory:          storageFactory,

			StabilityLevel: metrics.ALPHA,
		},
	)
)

var registerMetrics sync.Once

// Register registers all metrics.
func Register(collectors ...metrics.StableCollector) {
	// Register the metrics.
	registerMetrics.Do(func() {
		legacyregistry.MustRegister(FirstNetworkPodStartSLIDuration)
		legacyregistry.MustRegister(NodeName)

}

func handleErr(t *testing.T, err error, metricName string) {
	if err != nil {
		t.Errorf("Failed to get %s value, err: %v", metricName, err)
	}
}

func setupMetrics() {
	ephemeralvolumemetrics.RegisterMetrics()
	ephemeralvolumemetrics.ResourceClaimCreateAttempts.Reset()
	ephemeralvolumemetrics.ResourceClaimCreateFailures.Reset()

	logger := klog.FromContext(ctx)
	broadcaster := record.NewBroadcaster(record.WithContext(ctx))
	recorder := broadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "endpoint-slice-mirroring-controller"})

	metrics.RegisterMetrics()

	c := &Controller{
		client: client,
		// This is similar to the DefaultControllerRateLimiter, just with a
		// significantly higher default backoff (1s vs 5ms). This controller