70 lines
2.4 KiB
Go
70 lines
2.4 KiB
Go
/*
|
|
Copyright 2024 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package features
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
clientfeatures "k8s.io/client-go/features"
|
|
"k8s.io/component-base/featuregate"
|
|
)
|
|
|
|
// clientAdapter adapts a k8s.io/component-base/featuregate.MutableFeatureGate to client-go's
|
|
// feature Gate and Registry interfaces. The component-base types Feature, FeatureSpec, and
|
|
// prerelease, and the component-base prerelease constants, are duplicated by parallel types and
|
|
// constants in client-go. The parallel types exist to allow the feature gate mechanism to be used
|
|
// for client-go features without introducing a circular dependency between component-base and
|
|
// client-go.
|
|
type clientAdapter struct {
|
|
mfg featuregate.MutableFeatureGate
|
|
}
|
|
|
|
var _ clientfeatures.Gates = &clientAdapter{}
|
|
|
|
func (a *clientAdapter) Enabled(name clientfeatures.Feature) bool {
|
|
return a.mfg.Enabled(featuregate.Feature(name))
|
|
}
|
|
|
|
var _ clientfeatures.Registry = &clientAdapter{}
|
|
|
|
func (a *clientAdapter) Add(in map[clientfeatures.Feature]clientfeatures.FeatureSpec) error {
|
|
out := map[featuregate.Feature]featuregate.FeatureSpec{}
|
|
for name, spec := range in {
|
|
converted := featuregate.FeatureSpec{
|
|
Default: spec.Default,
|
|
LockToDefault: spec.LockToDefault,
|
|
}
|
|
switch spec.PreRelease {
|
|
case clientfeatures.Alpha:
|
|
converted.PreRelease = featuregate.Alpha
|
|
case clientfeatures.Beta:
|
|
converted.PreRelease = featuregate.Beta
|
|
case clientfeatures.GA:
|
|
converted.PreRelease = featuregate.GA
|
|
case clientfeatures.Deprecated:
|
|
converted.PreRelease = featuregate.Deprecated
|
|
default:
|
|
// The default case implies programmer error. The same set of prerelease
|
|
// constants must exist in both component-base and client-go, and each one
|
|
// must have a case here.
|
|
panic(fmt.Sprintf("unrecognized prerelease %q of feature %q", spec.PreRelease, name))
|
|
}
|
|
out[featuregate.Feature(name)] = converted
|
|
}
|
|
return a.mfg.Add(out)
|
|
}
|