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46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
from redis import Redis, ConnectionError
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from config import REDIS_HOST, REDIS_PORT, ENABLE_EXPERIMENTAL_REDIS
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redis_client = Redis(host=REDIS_HOST, port=int(REDIS_PORT), db=0)
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redis_url = f"redis://{REDIS_HOST}:{REDIS_PORT}"
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try:
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use_redis_connection = redis_client.ping() and ENABLE_EXPERIMENTAL_REDIS
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except ConnectionError:
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use_redis_connection = False
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class FallbackCache:
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def __init__(self) -> None:
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self.fallback: dict = {}
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def get(self, key: str, *args, **kwargs) -> str:
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return self.fallback.get(key, "")
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def set(self, key: str, value: str, *args, **kwargs) -> None:
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self.fallback[key] = value
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def delete(self, key: str, *args, **kwargs) -> None:
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self.fallback.pop(key, None)
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def exists(self, key: str, *args, **kwargs) -> bool:
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return key in self.fallback
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def flushall(self) -> None:
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self.fallback = {}
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def __repr__(self) -> str:
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return f"<FallbackCache {self.fallback}>"
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def __str__(self) -> str:
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return repr(self)
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# A seperate client that auto-decodes responses is needed
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_cache_client = Redis(
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host=REDIS_HOST, port=int(REDIS_PORT), db=0, decode_responses=True
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)
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_fallback_cache = FallbackCache()
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cache = _cache_client if use_redis_connection else _fallback_cache
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