Make limit system lives

src/data/http_request_handler.rs

@@ -146,6 +146,13 @@ impl HttpRequestHandler {
         Err(Box::new(ExecError::new(&message)))
     }
 
+    /// Too many requests (429)
+    pub fn too_many_requests(&mut self, message: &str) -> RequestResult {
+        self.response = Some(HttpResponse::TooManyRequests().json(
+            HttpError::new(429, message)));
+        Err(Box::new(ExecError::new(message)))
+    }
+
     /// If result is not OK, return a bad request
     pub fn ok_or_bad_request<E>(&mut self, res: ResultBoxError<E>, msg: &str) -> ResultBoxError<E> {
         match res {