Add group alias names to discovery in registry

Kubernetes-commit: 058f9b4f32f085075f7c2cc6c2caabc80ef41815

pkg/endpoints/installer.go

@@ -376,6 +376,12 @@ func (a *APIInstaller) registerResourceHandlers(path string, storage rest.Storag
 
 	tableProvider, _ := storage.(rest.TableConvertor)
 
+	var categories []string
+	categoriesProvider, ok := storage.(rest.CategoriesProvider)
+	if ok {
+		categories = categoriesProvider.Categories()
+	}
+
 	var apiResource metav1.APIResource
 	// Get the list of actions for the given scope.
 	switch scope.Name() {
@@ -822,6 +828,7 @@ func (a *APIInstaller) registerResourceHandlers(path string, storage rest.Storag
 	}
 	sort.Strings(apiResource.Verbs)
 	apiResource.ShortNames = shortNames
+	apiResource.Categories = categories
 
 	return &apiResource, nil
 }

pkg/registry/rest/rest.go

@@ -71,6 +71,12 @@ type ShortNamesProvider interface {
 	ShortNames() []string
 }
 
+// CategoriesProvider allows a resource to specify which groups of resources (categories) it's part of. Categories can
+// be used by API clients to refer to a batch of resources by using a single name (e.g. "all" could translate to "pod,rc,svc,...").
+type CategoriesProvider interface {
+	Categories() []string
+}
+
 // Lister is an object that can retrieve resources that match the provided field and label criteria.
 type Lister interface {
 	// NewList returns an empty object that can be used with the List call.