celery/celery/signals.py

# -*- coding: utf-8 -*-
"""
    celery.signals
    ~~~~~~~~~~~~~~

    See :ref:`signals`.

    :copyright: (c) 2009 - 2012 by Ask Solem.
    :license: BSD, see LICENSE for more details.

"""
from __future__ import absolute_import

from .utils.dispatch import Signal

task_sent = Signal(providing_args=["task_id", "task",
                                   "args", "kwargs",
                                   "eta", "taskset"])
task_prerun = Signal(providing_args=["task_id", "task",
                                     "args", "kwargs"])
task_postrun = Signal(providing_args=["task_id", "task",
                                      "args", "kwargs", "retval"])
task_failure = Signal(providing_args=["task_id", "exception",
                                      "args", "kwargs", "traceback",
                                      "einfo"])

celeryd_init = Signal(providing_args=["instance"])

worker_init = Signal(providing_args=[])
worker_process_init = Signal(providing_args=[])
worker_ready = Signal(providing_args=[])
worker_shutdown = Signal(providing_args=[])

setup_logging = Signal(providing_args=["loglevel", "logfile",
                                       "format", "colorize"])
after_setup_logger = Signal(providing_args=["logger", "loglevel", "logfile",
                                            "format", "colorize"])
after_setup_task_logger = Signal(providing_args=["logger", "loglevel",
                                                 "logfile", "format",
                                                 "colorize"])

beat_init = Signal(providing_args=[])
beat_embedded_init = Signal(providing_args=[])

eventlet_pool_started = Signal(providing_args=[])
eventlet_pool_preshutdown = Signal(providing_args=[])
eventlet_pool_postshutdown = Signal(providing_args=[])
eventlet_pool_apply = Signal(providing_args=["target", "args", "kwargs"])