This document describes the current stable version of Celery (5.2). For development docs, go here.

celery.events.snapshot

Periodically store events in a database.

Consuming the events as a stream isn’t always suitable so this module implements a system to take snapshots of the state of a cluster at regular intervals. There’s a full implementation of this writing the snapshots to a database in djcelery.snapshots in the django-celery distribution.

class celery.events.snapshot.Polaroid(state, freq=1.0, maxrate=None, cleanup_freq=3600.0, timer=None, app=None)

Record event snapshots.

cancel()

capture()

cleanup()

cleanup_signal = <Signal: cleanup_signal providing_args=set()>

clear_after = False

install()

on_cleanup()

on_shutter(state)

shutter()

shutter_signal = <Signal: shutter_signal providing_args={'state'}>

timer = None

celery.events.snapshot.evcam(camera, freq=1.0, maxrate=None, loglevel=0, logfile=None, pidfile=None, timer=None, app=None, **kwargs)

Start snapshot recorder.