Golang rest.NamespaceScopedStrategy類代碼示例

// Creates a cacher based given storageConfig.
func StorageWithCacher(
	storageConfig *storagebackend.Config,
	capacity int,
	objectType runtime.Object,
	resourcePrefix string,
	scopeStrategy rest.NamespaceScopedStrategy,
	newListFunc func() runtime.Object,
	triggerFunc storage.TriggerPublisherFunc) storage.Interface {

	// TODO: we would change this later to make storage always have cacher and hide low level KV layer inside.
	// Currently it has two layers of same storage interface -- cacher and low level kv.
	cacherConfig := storage.CacherConfig{
		CacheCapacity:        capacity,
		Storage:              generic.NewRawStorage(storageConfig),
		Versioner:            etcdstorage.APIObjectVersioner{},
		Type:                 objectType,
		ResourcePrefix:       resourcePrefix,
		NewListFunc:          newListFunc,
		TriggerPublisherFunc: triggerFunc,
		Codec:                storageConfig.Codec,
	}
	if scopeStrategy.NamespaceScoped() {
		cacherConfig.KeyFunc = func(obj runtime.Object) (string, error) {
			return storage.NamespaceKeyFunc(resourcePrefix, obj)
		}
	} else {
		cacherConfig.KeyFunc = func(obj runtime.Object) (string, error) {
			return storage.NoNamespaceKeyFunc(resourcePrefix, obj)
		}
	}

	return storage.NewCacherFromConfig(cacherConfig)
}

// Create a new Cacher responsible from service WATCH and LIST requests from its
// internal cache and updating its cache in the background based on the given
// configuration.
func NewCacher(
	storage Interface,
	capacity int,
	versioner Versioner,
	objectType runtime.Object,
	resourcePrefix string,
	scopeStrategy rest.NamespaceScopedStrategy,
	newListFunc func() runtime.Object) Interface {
	config := CacherConfig{
		CacheCapacity:  capacity,
		Storage:        storage,
		Versioner:      versioner,
		Type:           objectType,
		ResourcePrefix: resourcePrefix,
		NewListFunc:    newListFunc,
	}
	if scopeStrategy.NamespaceScoped() {
		config.KeyFunc = func(obj runtime.Object) (string, error) {
			return NamespaceKeyFunc(resourcePrefix, obj)
		}
	} else {
		config.KeyFunc = func(obj runtime.Object) (string, error) {
			return NoNamespaceKeyFunc(resourcePrefix, obj)
		}
	}
	return NewCacherFromConfig(config)
}

// Creates a cacher on top of the given 'storageInterface'.
func StorageWithCacher(
	storageInterface storage.Interface,
	capacity int,
	objectType runtime.Object,
	resourcePrefix string,
	scopeStrategy rest.NamespaceScopedStrategy,
	newListFunc func() runtime.Object,
	triggerFunc storage.TriggerPublisherFunc) storage.Interface {

	config := storage.CacherConfig{
		CacheCapacity:        capacity,
		Storage:              storageInterface,
		Versioner:            etcdstorage.APIObjectVersioner{},
		Type:                 objectType,
		ResourcePrefix:       resourcePrefix,
		NewListFunc:          newListFunc,
		TriggerPublisherFunc: triggerFunc,
	}
	if scopeStrategy.NamespaceScoped() {
		config.KeyFunc = func(obj runtime.Object) (string, error) {
			return storage.NamespaceKeyFunc(resourcePrefix, obj)
		}
	} else {
		config.KeyFunc = func(obj runtime.Object) (string, error) {
			return storage.NoNamespaceKeyFunc(resourcePrefix, obj)
		}
	}

	return storage.NewCacherFromConfig(config)
}