protected void doPost()

in github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/notification/WebhookServlet.java [138:178]

37 lines of code
7 McCabe index (conditional complexity)


  protected void doPost(HttpServletRequest req, HttpServletResponse resp)
      throws ServletException, IOException {
    if (Strings.emptyToNull(config.webhookUser) == null) {
      logger.error("No webhookUser defined: cannot process GitHub events");
      resp.sendError(SC_INTERNAL_SERVER_ERROR);
      return;
    }

    WebhookEventHandler<?> handler = getWebhookHandler(req.getHeader("X-Github-Event"));
    if (handler == null) {
      resp.sendError(SC_NOT_FOUND);
      return;
    }

    try (BufferedReader reader = req.getReader()) {
      String body = Joiner.on("\n").join(CharStreams.readLines(reader));
      if (!validateSignature(req.getHeader("X-Hub-Signature"), body, req.getCharacterEncoding())) {
        logger.error("Signature mismatch to the payload");
        resp.sendError(SC_FORBIDDEN);
        return;
      }

      session.get().setUserAccountId(Account.Id.fromRef(config.webhookUser));
      GitHubLogin login = loginProvider.get(config.webhookUser);
      if (login == null || !login.isLoggedIn()) {
        logger.error(
            "Cannot login to github as {}. {}.webhookUser is not correctly configured?",
            config.webhookUser,
            GitHubConfig.CONF_SECTION);
        resp.setStatus(SC_INTERNAL_SERVER_ERROR);
        return;
      }
      requestScopedLoginProvider.get(req).login(login.getToken());

      if (callHander(handler, body)) {
        resp.setStatus(SC_NO_CONTENT);
      } else {
        resp.sendError(SC_INTERNAL_SERVER_ERROR);
      }
    }
  }