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46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
from threading import Lock
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from constance import config
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from constance import signals
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from . import Backend
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class MemoryBackend(Backend):
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"""Simple in-memory backend that should be mostly used for testing purposes."""
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_storage = {}
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_lock = Lock()
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def __init__(self):
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super().__init__()
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def get(self, key):
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with self._lock:
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return self._storage.get(key)
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async def aget(self, key):
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# Memory operations are fast enough that we don't need true async here
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return self.get(key)
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def mget(self, keys):
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if not keys:
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return {}
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with self._lock:
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return {key: self._storage[key] for key in keys if key in self._storage}
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async def amget(self, keys):
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if not keys:
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return {}
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with self._lock:
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return {key: self._storage[key] for key in keys if key in self._storage}
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def set(self, key, value):
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with self._lock:
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old_value = self._storage.get(key)
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self._storage[key] = value
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signals.config_updated.send(sender=config, key=key, old_value=old_value, new_value=value)
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async def aset(self, key, value):
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# Memory operations are fast enough that we don't need true async here
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self.set(key, value)
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