Method on_failure

celery/app/task.py:1100–1114

Error handler. This is run by the worker when the task fails. Arguments: exc (Exception): The exception raised by the task. task_id (str): Unique id of the failed task. args (Tuple): Original arguments for the task that failed. kwargs

(self, exc, task_id, args, kwargs, einfo)

        """

    def on_failure(self, exc, task_id, args, kwargs, einfo):
        """Error handler.

        This is run by the worker when the task fails.

        Arguments:
            exc (Exception): The exception raised by the task.
            task_id (str): Unique id of the failed task.
            args (Tuple): Original arguments for the task that failed.
            kwargs (Dict): Original keyword arguments for the task that failed.
            einfo (~billiard.einfo.ExceptionInfo): Exception information.

        Returns:
            None: The return value of this handler is ignored.
        """

    def after_return(self, status, retval, task_id, args, kwargs, einfo):
        """Handler called after the task returns.