fix: add readiness handler, only accept POST on webhook handlers

main.go

@@ -62,6 +62,7 @@ func main() {
 	r := mux.NewRouter()
 	r.PathPrefix("/debug").Handler(http.DefaultServeMux)
 	r.PathPrefix("/webhook").Handler(http.StripPrefix("/webhook", s))
+	r.Path("/ready").HandlerFunc(readyHandler)
 
 	srv := &http.Server{
 		Addr:    listenAddr,
@@ -85,3 +86,8 @@ func main() {
 	srv.Shutdown(ctx)
 	log.Println("shutting down")
 }
+
+// for now this just writes 200 back to show the server is up and listening
+func readyHandler(w http.ResponseWriter, req *http.Request) {
+	w.WriteHeader(http.StatusOK)
+}

server/server.go

@@ -90,7 +90,7 @@ func New(ctx context.Context, config config.Config) (Server, error) {
 			return s, fmt.Errorf("could not create handler func for webhook %v: %w", name, err)
 		}
 
-		s.r.HandleFunc(fmt.Sprintf("/%v", name), handlerFunc)
+		s.r.HandleFunc(fmt.Sprintf("/%v", name), handlerFunc).Methods("POST")
 	}
 
 	return s, nil