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authentik/passbook/flows/signals.py

32 lines
1.2 KiB
Python

"""passbook flow signals"""
from django.core.cache import cache
from django.db.models.signals import post_save
from django.dispatch import receiver
from structlog import get_logger
LOGGER = get_logger()
@receiver(post_save)
# pylint: disable=unused-argument
def invalidate_flow_cache(sender, instance, **_):
"""Invalidate flow cache when flow is updated"""
from passbook.flows.models import Flow, FlowStageBinding, Stage
from passbook.flows.planner import cache_key
if isinstance(instance, Flow):
LOGGER.debug("Invalidating Flow cache", flow=instance)
cache.delete(f"{cache_key(instance)}*")
if isinstance(instance, FlowStageBinding):
LOGGER.debug("Invalidating Flow cache from FlowStageBinding", binding=instance)
cache.delete(f"{cache_key(instance.flow)}*")
if isinstance(instance, Stage):
LOGGER.debug("Invalidating Flow cache from Stage", stage=instance)
total = 0
for binding in FlowStageBinding.objects.filter(stage=instance):
prefix = cache_key(binding.flow)
keys = cache.keys(f"{prefix}*")
total += len(keys)
cache.delete_many(keys)
LOGGER.debug("Deleted keys", len=total)