Move ComponentSLIs to versioned features and mark as GA

Author: Jefftree

staging/src/k8s.io/component-base/metrics/features/kube_features.go

@@ -17,23 +17,30 @@ limitations under the License.
 package features
 
 import (
+	"k8s.io/apimachinery/pkg/util/version"
 	"k8s.io/component-base/featuregate"
 )
 
 const (
 	// owner: @logicalhan
 	// kep: https://kep.k8s.io/3466
-	// alpha: v1.26
 	ComponentSLIs featuregate.Feature = "ComponentSLIs"
 )
 
-func featureGates() map[featuregate.Feature]featuregate.FeatureSpec {
-	return map[featuregate.Feature]featuregate.FeatureSpec{
-		ComponentSLIs: {Default: true, PreRelease: featuregate.Beta},
+
+func featureGates() map[featuregate.Feature]featuregate.VersionedSpecs {
+	return map[featuregate.Feature]featuregate.VersionedSpecs{
+		ComponentSLIs: {
+			{Version: version.MustParse("1.26"), Default: false, PreRelease: featuregate.Alpha},
+			{Version: version.MustParse("1.27"), Default: true, PreRelease: featuregate.Beta},
+			// ComponentSLIs officially graduated to GA in v1.29 but the gate was not updated until v1.32.
+			// To support emulated versions, keep the gate until v1.35.
+			{Version: version.MustParse("1.32"), Default: true, PreRelease: featuregate.GA, LockToDefault: true},
+		},
 	}
 }
 
 // AddFeatureGates adds all feature gates used by this package.
-func AddFeatureGates(mutableFeatureGate featuregate.MutableFeatureGate) error {
-	return mutableFeatureGate.Add(featureGates())
+func AddFeatureGates(mutableFeatureGate featuregate.MutableVersionedFeatureGate) error {
+	return mutableFeatureGate.AddVersioned(featureGates())
 }