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# SPDX-FileCopyrightText: 2015 Eric Larson
#
# SPDX-License-Identifier: Apache-2.0
from __future__ import annotations
from datetime import datetime, timezone
from typing import TYPE_CHECKING
from pip._vendor.cachecontrol.cache import BaseCache
if TYPE_CHECKING:
from redis import Redis
class RedisCache(BaseCache):
def __init__(self, conn: Redis[bytes]) -> None:
self.conn = conn
def get(self, key: str) -> bytes | None:
return self.conn.get(key)
def set(
self, key: str, value: bytes, expires: int | datetime | None = None
) -> None:
if not expires:
self.conn.set(key, value)
elif isinstance(expires, datetime):
now_utc = datetime.now(timezone.utc)
if expires.tzinfo is None:
now_utc = now_utc.replace(tzinfo=None)
delta = expires - now_utc
self.conn.setex(key, int(delta.total_seconds()), value)
else:
self.conn.setex(key, expires, value)
def delete(self, key: str) -> None:
self.conn.delete(key)
def clear(self) -> None:
"""Helper for clearing all the keys in a database. Use with
caution!"""
for key in self.conn.keys():
self.conn.delete(key)
def close(self) -> None:
"""Redis uses connection pooling, no need to close the connection."""
pass