mirror of
https://github.com/meta-llama/llama-stack.git
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71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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# All rights reserved.
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#
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# This source code is licensed under the terms described in the LICENSE file in
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# the root directory of this source tree.
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from datetime import datetime
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from typing import List, Optional
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from redis.asyncio import Redis
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from ..api import * # noqa: F403
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from ..config import RedisKVStoreConfig
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class RedisKVStoreImpl(KVStore):
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def __init__(self, config: RedisKVStoreConfig):
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self.config = config
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async def initialize(self) -> None:
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self.redis = Redis.from_url(self.config.url)
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def _namespaced_key(self, key: str) -> str:
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if not self.config.namespace:
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return key
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return f"{self.config.namespace}:{key}"
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async def set(
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self, key: str, value: str, expiration: Optional[datetime] = None
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) -> None:
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key = self._namespaced_key(key)
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await self.redis.set(key, value)
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if expiration:
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await self.redis.expireat(key, expiration)
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async def get(self, key: str) -> Optional[str]:
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key = self._namespaced_key(key)
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value = await self.redis.get(key)
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if value is None:
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return None
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ttl = await self.redis.ttl(key)
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return value
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async def delete(self, key: str) -> None:
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key = self._namespaced_key(key)
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await self.redis.delete(key)
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async def range(self, start_key: str, end_key: str) -> List[str]:
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start_key = self._namespaced_key(start_key)
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end_key = self._namespaced_key(end_key)
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result = []
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cursor = 0
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pattern = start_key + "*" # Match all keys starting with start_key prefix
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while True:
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cursor, keys = await self.redis.scan(cursor, match=pattern)
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for key in keys:
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key_str = key.decode("utf-8") if isinstance(key, bytes) else key
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if start_key <= key_str <= end_key:
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value = await self.redis.get(key)
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if value is not None:
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value_str = (
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value.decode("utf-8") if isinstance(value, bytes) else value
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)
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result.append(value_str)
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if cursor == 0:
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break
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return result
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