added short names for resources which are exposed during discovery

pkg/endpoints/installer.go

@@ -35,10 +35,10 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apiserver/pkg/endpoints/handlers"
 	"k8s.io/apiserver/pkg/endpoints/handlers/negotiation"
 	"k8s.io/apiserver/pkg/endpoints/metrics"
 	"k8s.io/apiserver/pkg/endpoints/request"
-	"k8s.io/apiserver/pkg/endpoints/handlers"
 	"k8s.io/apiserver/pkg/registry/rest"
 
 	"github.com/emicklei/go-restful"
@@ -368,6 +368,12 @@ func (a *APIInstaller) registerResourceHandlers(path string, storage rest.Storag
 		resourceKind = kind
 	}
 
+	var shortNames []string
+	shortNamesProvider, ok := storage.(rest.ShortNamesProvider)
+	if ok {
+		shortNames = shortNamesProvider.ShortNames()
+	}
+
 	var apiResource metav1.APIResource
 	// Get the list of actions for the given scope.
 	switch scope.Name() {
@@ -796,6 +802,7 @@ func (a *APIInstaller) registerResourceHandlers(path string, storage rest.Storag
 		apiResource.Verbs = append(apiResource.Verbs, kubeVerb)
 	}
 	sort.Strings(apiResource.Verbs)
+	apiResource.ShortNames = shortNames
 
 	return &apiResource, nil
 }

pkg/registry/rest/rest.go

@@ -65,6 +65,11 @@ type KindProvider interface {
 	Kind() string
 }
 
+// ShortNamesProvider is an interface for RESTful storage services. Delivers a list of short names for a resource. The list is used by kubectl to have short names representation of resources.
+type ShortNamesProvider interface {
+	ShortNames() []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.