2 ==================================================================================
3 Copyright (c) 2019 AT&T Intellectual Property.
4 Copyright (c) 2019 Nokia
6 Licensed under the Apache License, Version 2.0 (the "License");
7 you may not use this file except in compliance with the License.
8 You may obtain a copy of the License at
10 http://www.apache.org/licenses/LICENSE-2.0
12 Unless required by applicable law or agreed to in writing, software
13 distributed under the License is distributed on an "AS IS" BASIS,
14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 See the License for the specific language governing permissions and
16 limitations under the License.
17 ==================================================================================
24 "github.com/gorilla/mux"
30 ReadyURL = "/ric/v1/health/ready"
31 AliveURL = "/ric/v1/health/alive"
32 ConfigURL = "/ric/v1/cm/{name}"
35 type StatusCb func() bool
42 func NewRouter() *Router {
44 router: mux.NewRouter().StrictSlash(true),
45 cbMap: make([]StatusCb, 0),
48 // Inject default routes for health probes
49 r.InjectRoute(ReadyURL, readyHandler, "GET")
50 r.InjectRoute(AliveURL, aliveHandler, "GET")
51 r.InjectRoute(ConfigURL, configHandler, "POST")
56 func (r *Router) serviceChecker(inner http.HandlerFunc) http.HandlerFunc {
57 return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
58 Logger.Info("restapi: method=%s url=%s", req.Method, req.URL.RequestURI())
59 if req.URL.RequestURI() == AliveURL || r.CheckStatus() {
60 inner.ServeHTTP(w, req)
62 respondWithJSON(w, http.StatusServiceUnavailable, nil)
67 func (r *Router) InjectRoute(url string, handler http.HandlerFunc, method string) *mux.Route {
68 return r.router.Path(url).HandlerFunc(r.serviceChecker(handler)).Methods(method)
71 func (r *Router) InjectQueryRoute(url string, h http.HandlerFunc, m string, q ...string) *mux.Route {
72 return r.router.Path(url).HandlerFunc(r.serviceChecker(h)).Methods(m).Queries(q...)
75 func (r *Router) InjectRoutePrefix(prefix string, handler http.HandlerFunc) *mux.Route {
76 return r.router.PathPrefix(prefix).HandlerFunc(r.serviceChecker(handler))
79 func (r *Router) InjectStatusCb(f StatusCb) {
80 r.cbMap = append(r.cbMap, f)
83 func (r *Router) CheckStatus() (status bool) {
84 if len(r.cbMap) == 0 {
88 for _, f := range r.cbMap {
94 func readyHandler(w http.ResponseWriter, r *http.Request) {
95 respondWithJSON(w, http.StatusOK, nil)
98 func aliveHandler(w http.ResponseWriter, r *http.Request) {
99 respondWithJSON(w, http.StatusOK, nil)
102 func configHandler(w http.ResponseWriter, r *http.Request) {
103 xappName := mux.Vars(r)["name"]
104 if xappName == "" || r.Body == nil {
105 respondWithJSON(w, http.StatusBadRequest, nil)
110 body, err := ioutil.ReadAll(r.Body)
112 Logger.Error("ioutil.ReadAll failed: %v", err)
113 respondWithJSON(w, http.StatusInternalServerError, nil)
117 if err := PublishConfigChange(xappName, string(body)); err != nil {
118 respondWithJSON(w, http.StatusInternalServerError, nil)
122 respondWithJSON(w, http.StatusOK, nil)
125 func respondWithJSON(w http.ResponseWriter, code int, payload interface{}) {
126 w.Header().Set("Content-Type", "application/json")
129 response, _ := json.Marshal(payload)