This document describes the current stable version of Celery (4.0). For development docs, go here.

celery.worker

Worker implementation.

class celery.worker.WorkController(app=None, hostname=None, **kwargs)[source]

Unmanaged worker instance.

class Blueprint(steps=None, name=None, on_start=None, on_close=None, on_stopped=None)[source]

Worker bootstep blueprint.

default_steps = set([u'celery.worker.components:Consumer', u'celery.worker.components:Hub', u'celery.worker.components:Timer', u'celery.worker.autoscale:WorkerComponent', u'celery.worker.components:Beat', u'celery.worker.components:Pool', u'celery.worker.components:StateDB'])
name = u'Worker'
WorkController.app = None
WorkController.blueprint = None
WorkController.exitcode = None
WorkController.info()[source]
WorkController.on_after_init(**kwargs)[source]
WorkController.on_before_init(**kwargs)[source]
WorkController.on_close()[source]
WorkController.on_consumer_ready(consumer)[source]
WorkController.on_init_blueprint()[source]
WorkController.on_start()[source]
WorkController.on_stopped()[source]
WorkController.pidlock = None
WorkController.pool = None
WorkController.prepare_args(**kwargs)[source]
WorkController.register_with_event_loop(hub)[source]
WorkController.reload(modules=None, reload=False, reloader=None)[source]
WorkController.rusage()[source]
WorkController.semaphore = None
WorkController.setup_defaults(concurrency=None, loglevel=u'WARN', logfile=None, task_events=None, pool=None, consumer_cls=None, timer_cls=None, timer_precision=None, autoscaler_cls=None, pool_putlocks=None, pool_restarts=None, optimization=None, O=None, statedb=None, time_limit=None, soft_time_limit=None, scheduler=None, pool_cls=None, state_db=None, task_time_limit=None, task_soft_time_limit=None, scheduler_cls=None, schedule_filename=None, max_tasks_per_child=None, prefetch_multiplier=None, disable_rate_limits=None, worker_lost_wait=None, max_memory_per_child=None, **_kw)[source]
WorkController.setup_includes(includes)[source]
WorkController.setup_instance(queues=None, ready_callback=None, pidfile=None, include=None, use_eventloop=None, exclude_queues=None, **kwargs)[source]
WorkController.setup_queues(include, exclude=None)[source]
WorkController.should_use_eventloop()[source]
WorkController.signal_consumer_close()[source]
WorkController.start()[source]
WorkController.state
WorkController.stats()[source]
WorkController.stop(in_sighandler=False, exitcode=None)[source]

Graceful shutdown of the worker server.

WorkController.terminate(in_sighandler=False)[source]

Not so graceful shutdown of the worker server.