refactor application controller

Signed-off-by: zackzhang <zackzhang@yunify.com>

pkg/kapis/servicemesh/metrics/v1alpha2/register.go

@@ -21,7 +21,7 @@ import (
 	"github.com/emicklei/go-restful-openapi"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"kubesphere.io/kubesphere/pkg/apiserver/runtime"
-	_ "net/http"
+	"net/http"
 )
 
 const groupName = "servicemesh.kubesphere.io"
@@ -125,6 +125,8 @@ func AddToContainer(c *restful.Container) error {
 		Param(webservice.QueryParameter("groupBy", "app box grouping characteristic. Available groupings: [app, none, version].").DefaultValue("none")).
 		Param(webservice.QueryParameter("queryTime", "from which time point in UNIX timestamp, default now")).
 		Param(webservice.QueryParameter("injectServiceNodes", "flag for injecting the requested service node between source and destination nodes.").DefaultValue("false")).
+		Returns(http.StatusBadRequest, "bad request", BadRequestError{}).
+		Returns(http.StatusNotFound, "not found", NotFoundError{}).
 		Produces(restful.MIME_JSON))
 
 	// Get namespace health
@@ -135,6 +137,8 @@ func AddToContainer(c *restful.Container) error {
 		Param(webservice.PathParameter("namespace", "name of a namespace").Required(true)).
 		Param(webservice.QueryParameter("rateInterval", "the rate interval used for fetching error rate").DefaultValue("10m").Required(true)).
 		Param(webservice.QueryParameter("queryTime", "the time to use for query")).
+		Returns(http.StatusBadRequest, "bad request", BadRequestError{}).
+		Returns(http.StatusNotFound, "not found", NotFoundError{}).
 		Produces(restful.MIME_JSON))
 
 	// Get workloads health

pkg/kapis/servicemesh/metrics/v1alpha2/swagger-doc.go

@@ -0,0 +1,40 @@
+/*
+Copyright 2020 KubeSphere Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha2
+
+/////////////////////
+// SWAGGER RESPONSES
+/////////////////////
+
+// NoContent: the response is empty
+type NoContent struct {
+	Status int32 `json:"status"`
+	Reason error `json:"reason"`
+}
+
+// BadRequestError: the client request is incorrect
+type BadRequestError struct {
+	Status int32 `json:"status"`
+	Reason error `json:"reason"`
+}
+
+// NotFoundError is the error message that is generated when server could not find
+// what was requested
+type NotFoundError struct {
+	Status int32 `json:"status"`
+	Reason error `json:"reason"`
+}