scheduler: add aduit log for scheduler config API and add resp msg for evict-leader (#7674)

pkg/schedule/schedulers/evict_leader.go

@@ -372,7 +372,7 @@ func (handler *evictLeaderHandler) UpdateConfig(w http.ResponseWriter, r *http.R
 		handler.rd.JSON(w, http.StatusInternalServerError, err.Error())
 		return
 	}
-	handler.rd.JSON(w, http.StatusOK, nil)
+	handler.rd.JSON(w, http.StatusOK, "The scheduler has been applied to the store.")
 }
 
 func (handler *evictLeaderHandler) ListConfig(w http.ResponseWriter, r *http.Request) {

pkg/schedule/schedulers/grant_leader.go

@@ -274,7 +274,7 @@ func (handler *grantLeaderHandler) UpdateConfig(w http.ResponseWriter, r *http.R
 		handler.rd.JSON(w, http.StatusInternalServerError, err.Error())
 		return
 	}
-	handler.rd.JSON(w, http.StatusOK, nil)
+	handler.rd.JSON(w, http.StatusOK, "The scheduler has been applied to the store.")
 }
 
 func (handler *grantLeaderHandler) ListConfig(w http.ResponseWriter, r *http.Request) {

server/api/router.go

@@ -85,10 +85,10 @@ func getFunctionName(f interface{}) string {
 // @BasePath       /pd/api/v1
 func createRouter(prefix string, svr *server.Server) *mux.Router {
 	serviceMiddle := newServiceMiddlewareBuilder(svr)
-	registerPrefix := func(router *mux.Router, prefixPath string,
+	registerPrefix := func(router *mux.Router, prefixPath, name string,
 		handleFunc func(http.ResponseWriter, *http.Request), opts ...createRouteOption) {
 		routeCreateFunc(router.PathPrefix(prefixPath), serviceMiddle.createHandler(handleFunc),
-			getFunctionName(handleFunc), opts...)
+			name, opts...)
 	}
 	registerFunc := func(router *mux.Router, path string,
 		handleFunc func(http.ResponseWriter, *http.Request), opts ...createRouteOption) {
@@ -148,7 +148,8 @@ func createRouter(prefix string, svr *server.Server) *mux.Router {
 	registerFunc(clusterRouter, "/schedulers/diagnostic/{name}", diagnosticHandler.GetDiagnosticResult, setMethods(http.MethodGet), setAuditBackend(prometheus))
 
 	schedulerConfigHandler := newSchedulerConfigHandler(svr, rd)
-	registerPrefix(apiRouter, "/scheduler-config", schedulerConfigHandler.GetSchedulerConfig, setAuditBackend(prometheus))
+	registerPrefix(apiRouter, "/scheduler-config", "HandleSchedulerConfig", schedulerConfigHandler.HandleSchedulerConfig, setMethods(http.MethodPost, http.MethodDelete, http.MethodPut, http.MethodPatch), setAuditBackend(localLog, prometheus))
+	registerPrefix(apiRouter, "/scheduler-config", "GetSchedulerConfig", schedulerConfigHandler.HandleSchedulerConfig, setMethods(http.MethodGet), setAuditBackend(prometheus))
 
 	clusterHandler := newClusterHandler(svr, rd)
 	registerFunc(apiRouter, "/cluster", clusterHandler.GetCluster, setMethods(http.MethodGet), setAuditBackend(prometheus))
@@ -365,7 +366,7 @@ func createRouter(prefix string, svr *server.Server) *mux.Router {
 	// API to set or unset failpoints
 	failpoint.Inject("enableFailpointAPI", func() {
 		// this function will be named to "func2". It may be used in test
-		registerPrefix(apiRouter, "/fail", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		registerPrefix(apiRouter, "/fail", "FailPoint", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			// The HTTP handler of failpoint requires the full path to be the failpoint path.
 			r.URL.Path = strings.TrimPrefix(r.URL.Path, prefix+apiPrefix+"/fail")
 			new(failpoint.HttpHandler).ServeHTTP(w, r)

server/api/scheduler.go

@@ -372,7 +372,7 @@ func newSchedulerConfigHandler(svr *server.Server, rd *render.Render) *scheduler
 	}
 }
 
-func (h *schedulerConfigHandler) GetSchedulerConfig(w http.ResponseWriter, r *http.Request) {
+func (h *schedulerConfigHandler) HandleSchedulerConfig(w http.ResponseWriter, r *http.Request) {
 	handler := h.svr.GetHandler()
 	sh, err := handler.GetSchedulerConfigHandler()
 	if err == nil && sh != nil {

server/api/server_test.go

@@ -173,7 +173,10 @@ func (suite *serviceTestSuite) TestServiceLabels() {
 	accessPaths = suite.svr.GetServiceLabels("GetSchedulerConfig")
 	suite.Len(accessPaths, 1)
 	suite.Equal("/pd/api/v1/scheduler-config", accessPaths[0].Path)
-	suite.Equal("", accessPaths[0].Method)
+	suite.Equal("GET", accessPaths[0].Method)
+	accessPaths = suite.svr.GetServiceLabels("HandleSchedulerConfig")
+	suite.Len(accessPaths, 4)
+	suite.Equal("/pd/api/v1/scheduler-config", accessPaths[0].Path)
 
 	accessPaths = suite.svr.GetServiceLabels("ResignLeader")
 	suite.Len(accessPaths, 1)