92 lines
2.7 KiB
Python
92 lines
2.7 KiB
Python
import json
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import uuid
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from open_webui.utils.redis import get_redis_connection
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class RedisLock:
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def __init__(self, redis_url, lock_name, timeout_secs, redis_sentinels=[]):
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self.lock_name = lock_name
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self.lock_id = str(uuid.uuid4())
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self.timeout_secs = timeout_secs
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self.lock_obtained = False
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self.redis = get_redis_connection(
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redis_url, redis_sentinels, decode_responses=True
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)
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def aquire_lock(self):
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# nx=True will only set this key if it _hasn't_ already been set
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self.lock_obtained = self.redis.set(
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self.lock_name, self.lock_id, nx=True, ex=self.timeout_secs
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)
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return self.lock_obtained
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def renew_lock(self):
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# xx=True will only set this key if it _has_ already been set
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return self.redis.set(
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self.lock_name, self.lock_id, xx=True, ex=self.timeout_secs
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)
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def release_lock(self):
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lock_value = self.redis.get(self.lock_name)
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if lock_value and lock_value == self.lock_id:
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self.redis.delete(self.lock_name)
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class RedisDict:
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def __init__(self, name, redis_url, redis_sentinels=[]):
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self.name = name
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self.redis = get_redis_connection(
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redis_url, redis_sentinels, decode_responses=True
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)
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def __setitem__(self, key, value):
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serialized_value = json.dumps(value)
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self.redis.hset(self.name, key, serialized_value)
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def __getitem__(self, key):
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value = self.redis.hget(self.name, key)
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if value is None:
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raise KeyError(key)
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return json.loads(value)
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def __delitem__(self, key):
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result = self.redis.hdel(self.name, key)
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if result == 0:
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raise KeyError(key)
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def __contains__(self, key):
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return self.redis.hexists(self.name, key)
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def __len__(self):
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return self.redis.hlen(self.name)
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def keys(self):
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return self.redis.hkeys(self.name)
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def values(self):
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return [json.loads(v) for v in self.redis.hvals(self.name)]
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def items(self):
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return [(k, json.loads(v)) for k, v in self.redis.hgetall(self.name).items()]
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def get(self, key, default=None):
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try:
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return self[key]
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except KeyError:
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return default
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def clear(self):
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self.redis.delete(self.name)
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def update(self, other=None, **kwargs):
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if other is not None:
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for k, v in other.items() if hasattr(other, "items") else other:
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self[k] = v
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for k, v in kwargs.items():
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self[k] = v
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def setdefault(self, key, default=None):
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if key not in self:
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self[key] = default
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return self[key]
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