"k8s.io/apiserver/pkg/storage/storagebackend"
	"k8s.io/apiserver/pkg/storage/storagebackend/factory"
	"k8s.io/client-go/tools/cache"
)

// Creates a cacher based given storageConfig.
func StorageWithCacher() generic.StorageDecorator {
	return func(
		storageConfig *storagebackend.ConfigForResource,
		resourcePrefix string,
		keyFunc func(obj runtime.Object) (string, error),
		newFunc func() runtime.Object,

			klog.V(3).InfoS("Not using watch cache", "resource", resource)
			ret.Decorator = generic.UndecoratedStorage
		} else {
			klog.V(3).InfoS("Using watch cache", "resource", resource)
			ret.Decorator = genericregistry.StorageWithCacher()
		}
	}

	return ret, nil
}

// ParseWatchCacheSizes turns a list of cache size values into a map of group resources
// to requested sizes.

		ResourcePrefix:          crd.Spec.Group + "/" + crd.Spec.Names.Plural,
		CountMetricPollPeriod:   time.Minute,
	}
	if enableWatchCache {
		restOptionsGetter.Decorator = genericregistry.StorageWithCacher()
	}

	handler, err := NewCustomResourceDefinitionHandler(
		&versionDiscoveryHandler{}, &groupDiscoveryHandler{},
		crdInformer,
		http.HandlerFunc(func(http.ResponseWriter, *http.Request) {}),