llama-stack/llama_stack/providers/utils/kvstore/redis/redis.py
Ihar Hrachyshka 9e6561a1ec
chore: enable pyupgrade fixes (#1806)
# What does this PR do?

The goal of this PR is code base modernization.

Schema reflection code needed a minor adjustment to handle UnionTypes
and collections.abc.AsyncIterator. (Both are preferred for latest Python
releases.)

Note to reviewers: almost all changes here are automatically generated
by pyupgrade. Some additional unused imports were cleaned up. The only
change worth of note can be found under `docs/openapi_generator` and
`llama_stack/strong_typing/schema.py` where reflection code was updated
to deal with "newer" types.

Signed-off-by: Ihar Hrachyshka <ihar.hrachyshka@gmail.com>
2025-05-01 14:23:50 -07:00

69 lines
2.2 KiB
Python

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
from datetime import datetime
from redis.asyncio import Redis
from ..api import KVStore
from ..config import RedisKVStoreConfig
class RedisKVStoreImpl(KVStore):
def __init__(self, config: RedisKVStoreConfig):
self.config = config
async def initialize(self) -> None:
self.redis = Redis.from_url(self.config.url)
def _namespaced_key(self, key: str) -> str:
if not self.config.namespace:
return key
return f"{self.config.namespace}:{key}"
async def set(self, key: str, value: str, expiration: datetime | None = None) -> None:
key = self._namespaced_key(key)
await self.redis.set(key, value)
if expiration:
await self.redis.expireat(key, expiration)
async def get(self, key: str) -> str | None:
key = self._namespaced_key(key)
value = await self.redis.get(key)
if value is None:
return None
await self.redis.ttl(key)
return value
async def delete(self, key: str) -> None:
key = self._namespaced_key(key)
await self.redis.delete(key)
async def range(self, start_key: str, end_key: str) -> list[str]:
start_key = self._namespaced_key(start_key)
end_key = self._namespaced_key(end_key)
cursor = 0
pattern = start_key + "*" # Match all keys starting with start_key prefix
matching_keys = []
while True:
cursor, keys = await self.redis.scan(cursor, match=pattern, count=1000)
for key in keys:
key_str = key.decode("utf-8") if isinstance(key, bytes) else key
if start_key <= key_str <= end_key:
matching_keys.append(key)
if cursor == 0:
break
# Then fetch all values in a single MGET call
if matching_keys:
values = await self.redis.mget(matching_keys)
return [
value.decode("utf-8") if isinstance(value, bytes) else value for value in values if value is not None
]
return []