Signals - celery.signals

task_sent

Triggered when a task has been sent to the broker. Note that this is executed in the client process, the one sending the task, not in the worker.

Provides arguments:

• task_id

  Id of the task to be executed.

• task

  The task being executed.

• args

  the tasks positional arguments.

• kwargs

  The tasks keyword arguments.

• eta

  The time to execute the task.

• taskset

  Id of the taskset this task is part of (if any).

task_prerun

Triggered before a task is executed.

Provides arguments:

• task_id

  Id of the task to be executed.

• task

  The task being executed.

• args

  the tasks positional arguments.

• kwargs

  The tasks keyword arguments.

task_postrun

Triggered after a task has been executed.

Provides arguments:

• task_id

  Id of the task to be executed.

• task

  The task being executed.

• args

  The tasks positional arguments.

• kwargs

  The tasks keyword arguments.

• retval

  The return value of the task.

worker_init

Triggered before the worker is started.

worker_ready

Triggered when the worker is ready to accept work.

worker_shutdown

Triggered when the worker is about to shut down.