def purge_rule_enforcements(logger, timestamp):
"""
:param timestamp: Rule enforcement instances older than this timestamp will be deleted.
:type timestamp: ``datetime.datetime
"""
if not timestamp:
raise ValueError("Specify a valid timestamp to purge.")
logger.info("Purging rule enforcements older than timestamp: %s" %
timestamp.strftime("%Y-%m-%dT%H:%M:%S.%fZ"))
query_filters = {"enforced_at__lt": isotime.parse(timestamp)}
try:
deleted_count = RuleEnforcement.delete_by_query(**query_filters)
except InvalidQueryError as e:
msg = ("Bad query (%s) used to delete rule enforcements: %s"
"Please contact support." % (
query_filters,
six.text_type(e),
))
raise InvalidQueryError(msg)
except:
logger.exception(
"Deleting rule enforcements using query_filters %s failed.",
query_filters)
else:
logger.info("Deleted %s rule enforcement objects" % (deleted_count))
# Print stats
logger.info(
"All rule enforcement models older than timestamp %s were deleted.",
timestamp)
