// 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)
}