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flows: Stage ui_user_settings -> staticmethod with context as argument

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This commit is contained in:
Jens Langhammer
2020-06-28 10:31:26 +02:00
parent 8c36ab89e8
commit 9d03c4c7d2
5 changed files with 26 additions and 20 deletions
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21
passbook/flows/signals.py
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@ -7,6 +7,12 @@ from structlog import get_logger
LOGGER = get_logger()
def delete_cache_prefix(prefix: str) -> int:
"""Delete keys prefixed with `prefix` and return count of deleted keys."""
keys = cache.keys(prefix)
cache.delete_many(keys)
return len(keys)
@receiver(post_save)
# pylint: disable=unused-argument
def invalidate_flow_cache(sender, instance, **_):
@ -15,17 +21,14 @@ def invalidate_flow_cache(sender, instance, **_):
from passbook.flows.planner import cache_key
if isinstance(instance, Flow):
LOGGER.debug("Invalidating Flow cache", flow=instance)
cache.delete(f"{cache_key(instance)}*")
total = delete_cache_prefix(f"{cache_key(instance)}*")
LOGGER.debug("Invalidating Flow cache", flow=instance, len=total)
if isinstance(instance, FlowStageBinding):
LOGGER.debug("Invalidating Flow cache from FlowStageBinding", binding=instance)
cache.delete(f"{cache_key(instance.flow)}*")
total = delete_cache_prefix(f"{cache_key(instance.flow)}*")
LOGGER.debug("Invalidating Flow cache from FlowStageBinding", binding=instance, len=total)
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)
total += delete_cache_prefix(f"{prefix}*")
LOGGER.debug("Invalidating Flow cache from Stage", stage=instance, len=total)