Inquiry about operator gracefulshutdown function #2476

  public void stop(Duration gracefulShutdownTimeout) throws OperatorException {
    if (!started) {
      return;
    }
    log.info(
        "Operator SDK {} is shutting down...", configurationService.getVersion().getSdkVersion());
    controllerManager.stop();

    configurationService.getExecutorServiceManager().stop(gracefulShutdownTimeout);
    leaderElectionManager.stop();
    if (configurationService.closeClientOnStop()) {
      getKubernetesClient().close();
    }

    started = false;
  }

  @Override
  public void stop() throws OperatorException {
    int timeoutSeconds = configurationService.getTerminationTimeoutSeconds();
    if (timeoutSeconds > 0) {
      stop(Duration.ofSeconds(timeoutSeconds));
    } else {
      stop(Duration.ZERO);
    }
  }