Migrate stability level handle functionality overall metrics package

staging/src/k8s.io/component-base/metrics/counter.go

@@ -34,10 +34,8 @@ type Counter struct {
 // However, the object returned will not measure anything unless the collector is first
 // registered, since the metric is lazily instantiated.
 func NewCounter(opts *CounterOpts) *Counter {
-	// todo: handle defaulting better
+	opts.StabilityLevel.setDefaults()
-	if opts.StabilityLevel == "" {
+
-		opts.StabilityLevel = ALPHA
-	}
 	kc := &Counter{
 		CounterOpts: opts,
 		lazyMetric:  lazyMetric{},
@@ -86,10 +84,8 @@ type CounterVec struct {
 // However, the object returned will not measure anything unless the collector is first
 // registered, since the metric is lazily instantiated.
 func NewCounterVec(opts *CounterOpts, labels []string) *CounterVec {
-	// todo: handle defaulting better
+	opts.StabilityLevel.setDefaults()
-	if opts.StabilityLevel == "" {
+
-		opts.StabilityLevel = ALPHA
-	}
 	cv := &CounterVec{
 		CounterVec:     noopCounterVec,
 		CounterOpts:    opts,

staging/src/k8s.io/component-base/metrics/gauge.go

@@ -34,10 +34,8 @@ type Gauge struct {
 // However, the object returned will not measure anything unless the collector is first
 // registered, since the metric is lazily instantiated.
 func NewGauge(opts *GaugeOpts) *Gauge {
-	// todo: handle defaulting better
+	opts.StabilityLevel.setDefaults()
-	if opts.StabilityLevel == "" {
+
-		opts.StabilityLevel = ALPHA
-	}
 	kc := &Gauge{
 		GaugeOpts:  opts,
 		lazyMetric: lazyMetric{},
@@ -86,10 +84,8 @@ type GaugeVec struct {
 // However, the object returned will not measure anything unless the collector is first
 // registered, since the metric is lazily instantiated.
 func NewGaugeVec(opts *GaugeOpts, labels []string) *GaugeVec {
-	// todo: handle defaulting better
+	opts.StabilityLevel.setDefaults()
-	if opts.StabilityLevel == "" {
+
-		opts.StabilityLevel = ALPHA
-	}
 	cv := &GaugeVec{
 		GaugeVec:       noopGaugeVec,
 		GaugeOpts:      opts,

staging/src/k8s.io/component-base/metrics/histogram.go

@@ -46,10 +46,8 @@ type Histogram struct {
 // NewHistogram returns an object which is Histogram-like. However, nothing
 // will be measured until the histogram is registered somewhere.
 func NewHistogram(opts *HistogramOpts) *Histogram {
-	// todo: handle defaulting better
+	opts.StabilityLevel.setDefaults()
-	if opts.StabilityLevel == "" {
+
-		opts.StabilityLevel = ALPHA
-	}
 	h := &Histogram{
 		HistogramOpts: opts,
 		lazyMetric:    lazyMetric{},
@@ -98,10 +96,8 @@ type HistogramVec struct {
 // prometheus.HistogramVec object. However, the object returned will not measure
 // anything unless the collector is first registered, since the metric is lazily instantiated.
 func NewHistogramVec(opts *HistogramOpts, labels []string) *HistogramVec {
-	// todo: handle defaulting better
+	opts.StabilityLevel.setDefaults()
-	if opts.StabilityLevel == "" {
+
-		opts.StabilityLevel = ALPHA
-	}
 	v := &HistogramVec{
 		HistogramVec:   noopHistogramVec,
 		HistogramOpts:  opts,

staging/src/k8s.io/component-base/metrics/summary.go

@@ -37,10 +37,8 @@ type Summary struct {
 //
 // DEPRECATED: as per the metrics overhaul KEP
 func NewSummary(opts *SummaryOpts) *Summary {
-	// todo: handle defaulting better
+	opts.StabilityLevel.setDefaults()
-	if opts.StabilityLevel == "" {
+
-		opts.StabilityLevel = ALPHA
-	}
 	s := &Summary{
 		SummaryOpts: opts,
 		lazyMetric:  lazyMetric{},
@@ -93,10 +91,8 @@ type SummaryVec struct {
 //
 // DEPRECATED: as per the metrics overhaul KEP
 func NewSummaryVec(opts *SummaryOpts, labels []string) *SummaryVec {
-	// todo: handle defaulting better
+	opts.StabilityLevel.setDefaults()
-	if opts.StabilityLevel == "" {
+
-		opts.StabilityLevel = ALPHA
-	}
 	v := &SummaryVec{
 		SummaryOpts:    opts,
 		originalLabels: labels,