70 lines
1.9 KiB
Go
70 lines
1.9 KiB
Go
/*
|
|
Copyright 2019 the Velero contributors.
|
|
|
|
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 (
|
|
"strings"
|
|
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
|
)
|
|
|
|
type featureFlagSet struct {
|
|
set sets.String
|
|
}
|
|
|
|
// featureFlags will store all the flags for this process until NewFeatureFlagSet is called.
|
|
var featureFlags featureFlagSet
|
|
|
|
// IsEnabled returns True if a specified flag is enabled.
|
|
func IsEnabled(name string) bool {
|
|
return featureFlags.set.Has(name)
|
|
}
|
|
|
|
// Enable adds a given slice of feature names to the current feature list.
|
|
func Enable(names ...string) {
|
|
// Initialize the flag set so that users don't have to
|
|
if featureFlags.set == nil {
|
|
NewFeatureFlagSet()
|
|
}
|
|
|
|
featureFlags.set.Insert(names...)
|
|
}
|
|
|
|
// Disable removes all feature flags in a given slice from the current feature list.
|
|
func Disable(names ...string) {
|
|
featureFlags.set.Delete(names...)
|
|
}
|
|
|
|
// All returns enabled features as a slice of strings.
|
|
func All() []string {
|
|
return featureFlags.set.List()
|
|
}
|
|
|
|
// Serialize returns all features as a comma-separated string.
|
|
func Serialize() string {
|
|
return strings.Join(All(), ",")
|
|
}
|
|
|
|
// NewFeatureFlagSet initializes and populates a new FeatureFlagSet.
|
|
// This must be called to properly initialize the set for tracking flags.
|
|
// It is also useful for selectively controlling flags during tests.
|
|
func NewFeatureFlagSet(flags ...string) {
|
|
featureFlags = featureFlagSet{
|
|
set: sets.NewString(flags...),
|
|
}
|
|
}
|