This document describes the current stable version of Celery (4.3). 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)[source]

Record event snapshots.

cancel()[source]
capture()[source]
cleanup()[source]
cleanup_signal = <Signal: cleanup_signal providing_args=set()>
clear_after = False
install()[source]
on_cleanup()[source]
on_shutter(state)[source]
shutter()[source]
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)[source]

Start snapshot recorder.