Merge branch 'example/basic-auth-middleware'

example_test.go

@@ -17,3 +17,36 @@ func ExampleHTTPHandler() {
 	http.Handle(h.RootPath(), h)
 	log.Fatal(http.ListenAndServe(":8000", nil)) // visit localhost:8000/monitoring to see asynqmon homepage
 }
+
+func ExampleHTTPHandlerWithBasicAuthMidlleware() {
+
+	h := asynqmon.New(asynqmon.Options{
+		RootPath:     "/monitoring",
+		RedisConnOpt: asynq.RedisClientOpt{Addr: ":6379"},
+	})
+
+	http.Handle(h.RootPath(), basicAuthHandler("username", "password", h))
+	log.Fatal(http.ListenAndServe(":8000", nil)) // visit localhost:8000/monitoring to see asynqmon homepage
+}
+
+func basicAuthHandler(u, p string, next http.Handler) http.Handler {
+	var unauthorized = func(w http.ResponseWriter) {
+		w.Header().Set("WWW-Authenticate", `Basic realm="restricted", charset="UTF-8"`)
+		http.Error(w, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
+	}
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		username, password, ok := r.BasicAuth()
+		if !ok {
+			unauthorized(w)
+			return
+		}
+
+		if !(u == username && p == password) {
+			unauthorized(w)
+			return
+		}
+
+		next.ServeHTTP(w, r)
+	})
+}