django-constance/constance/backends/memory.py
Philipp Thumfart 4ac1e546c7
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Added async support (#656)
* Added async logic

* Added tests and fixed async deadlock on aset

* Used abstract base class for backend to simplify code coverage

* Reordered try except block

* Added explicit thread safety

* Fixed linting error

* Worked on redis init block

* Fixed async test setup

* Added tests for redis instantiation

* Fixed linting errors
2026-03-04 16:37:37 -06:00

51 lines
1.4 KiB
Python

from threading import Lock
from constance import config
from constance import signals
from . import Backend
class MemoryBackend(Backend):
"""Simple in-memory backend that should be mostly used for testing purposes."""
_storage = {}
_lock = Lock()
def __init__(self):
super().__init__()
def get(self, key):
with self._lock:
return self._storage.get(key)
async def aget(self, key):
# Memory operations are fast enough that we don't need true async here
return self.get(key)
def mget(self, keys):
if not keys:
return None
result = []
with self._lock:
for key in keys:
value = self._storage.get(key)
if value is not None:
result.append((key, value))
return result
async def amget(self, keys):
if not keys:
return {}
with self._lock:
return {key: self._storage[key] for key in keys if key in self._storage}
def set(self, key, value):
with self._lock:
old_value = self._storage.get(key)
self._storage[key] = value
signals.config_updated.send(sender=config, key=key, old_value=old_value, new_value=value)
async def aset(self, key, value):
# Memory operations are fast enough that we don't need true async here
self.set(key, value)