feature

package
Version: v1.14.6 Latest Latest
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Published: Aug 16, 2019 License: Apache-2.0, Apache-2.0 Imports: 8 Imported by: 0

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Constants

View Source
const (
	// Values for PreRelease.
	Alpha = prerelease("ALPHA")
	Beta  = prerelease("BETA")
	GA    = prerelease("")

	// Deprecated
	Deprecated = prerelease("DEPRECATED")
)

Variables

View Source
var (

	// DefaultMutableFeatureGate is a mutable version of DefaultFeatureGate.
	// Only top-level commands/options setup and the k8s.io/apiserver/pkg/util/feature/testing package should make use of this.
	// Tests that need to modify feature gates for the duration of their test should use:
	//   defer utilfeaturetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.<FeatureName>, <value>)()
	DefaultMutableFeatureGate MutableFeatureGate = NewFeatureGate()

	// DefaultFeatureGate is a shared global FeatureGate.
	// Top-level commands/options setup that needs to modify this feature gate should use DefaultMutableFeatureGate.
	DefaultFeatureGate FeatureGate = DefaultMutableFeatureGate
)

Functions

func NewFeatureGate

func NewFeatureGate() *featureGate

Types

type Feature

type Feature string

type FeatureGate

type FeatureGate interface {
	// Enabled returns true if the key is enabled.
	Enabled(key Feature) bool
	// KnownFeatures returns a slice of strings describing the FeatureGate's known features.
	KnownFeatures() []string
	// DeepCopy returns a deep copy of the FeatureGate object, such that gates can be
	// set on the copy without mutating the original. This is useful for validating
	// config against potential feature gate changes before committing those changes.
	DeepCopy() MutableFeatureGate
}

FeatureGate indicates whether a given feature is enabled or not

type FeatureSpec

type FeatureSpec struct {
	// Default is the default enablement state for the feature
	Default bool
	// LockToDefault indicates that the feature is locked to its default and cannot be changed
	LockToDefault bool
	// PreRelease indicates the maturity level of the feature
	PreRelease prerelease
}

type MutableFeatureGate added in v1.14.0

type MutableFeatureGate interface {
	FeatureGate

	// AddFlag adds a flag for setting global feature gates to the specified FlagSet.
	AddFlag(fs *pflag.FlagSet)
	// Set parses and stores flag gates for known features
	// from a string like feature1=true,feature2=false,...
	Set(value string) error
	// SetFromMap stores flag gates for known features from a map[string]bool or returns an error
	SetFromMap(m map[string]bool) error
	// Add adds features to the featureGate.
	Add(features map[Feature]FeatureSpec) error
}

MutableFeatureGate parses and stores flag gates for known features from a string like feature1=true,feature2=false,...

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