fix bugs of pvc api

pkg/kapis/resources/v1alpha3/handler.go

@@ -28,6 +28,36 @@ func New(factory informers.InformerFactory) *Handler {
 	}
 }
 
+func (h *Handler) handleGetResources(request *restful.Request, response *restful.Response) {
+	namespace := request.PathParameter("namespace")
+	resourceType := request.PathParameter("resources")
+	name := request.PathParameter("name")
+
+	result, err := h.resourceGetterV1alpha3.Get(resourceType, namespace, name)
+	if err == nil {
+		response.WriteEntity(result)
+		return
+	}
+
+	if err != resource.ErrResourceNotSupported {
+		klog.Error(err)
+		api.HandleInternalError(response, nil, err)
+		return
+	}
+
+	// fallback to v1alpha2
+	resultV1alpha2, err := h.resourcesGetterV1alpha2.GetResource(namespace, resourceType, name)
+
+	if err != nil {
+		klog.Error(err)
+		api.HandleInternalError(response, nil, err)
+		return
+	}
+
+	response.WriteEntity(resultV1alpha2)
+
+}
+
 // handleListResources retrieves resources
 func (h *Handler) handleListResources(request *restful.Request, response *restful.Response) {
 	query := query.ParseQueryParameter(request)

pkg/kapis/resources/v1alpha3/register.go

@@ -70,6 +70,15 @@ func AddToContainer(c *restful.Container, informerFactory informers.InformerFact
 		Param(webservice.QueryParameter(query.ParameterOrderBy, "sort parameters, e.g. orderBy=createTime")).
 		Returns(http.StatusOK, ok, api.ListResult{}))
 
+	webservice.Route(webservice.GET("/namespaces/{namespace}/{resources}/{name}").
+		To(handler.handleGetResources).
+		Metadata(restfulspec.KeyOpenAPITags, []string{tagNamespacedResource}).
+		Doc("Namespace level get resource query").
+		Param(webservice.PathParameter("namespace", "the name of the project")).
+		Param(webservice.PathParameter("resources", "namespace level resource type, e.g. pods,jobs,configmaps,services.")).
+		Param(webservice.PathParameter("name", "the name of resource")).
+		Returns(http.StatusOK, ok, api.ListResult{}))
+
 	webservice.Route(webservice.GET("/components").
 		To(handler.handleGetComponents).
 		Metadata(restfulspec.KeyOpenAPITags, []string{tagComponentStatus}).