def cleanup():
log.debug('Cleaning up stale or invalid sessions')
sessions = WatchSession.all()
if not len(sessions):
return
for key, ws in sessions:
delete = False
# Destroy invalid sessions
if ws is None:
delete = True
elif not ws.last_updated or type(ws.last_updated) is not datetime:
delete = True
elif total_seconds(datetime.now() - ws.last_updated) / 60 / 60 > 24:
# Destroy sessions last updated over 24 hours ago
log.debug('Session %s was last updated over 24 hours ago, queued for deletion', key)
delete = True
# Delete session or flag for update
if delete:
log.info('Session %s looks stale or invalid, deleting it now', key)
WatchSession.delete(key)
elif not ws.update_required:
log.info('Queueing session %s for update', key)
ws.update_required = True
ws.save()
log.debug('Finished cleaning up')
