def get_celery_queue_name(app_id, queue_name):
  """ Gets a usable queue name for celery to prevent collisions where
  mulitple apps have the same name for a queue.

  Args:
    app_id: The application ID.
    queue_name: String name of the queue.
  Returns:
    A string to reference the queue name in celery.
  """
  return app_id + "___" + queue_name