forked from zaclys/searxng
57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""Implementation of the redis client (redis-py_).
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.. _redis-py: https://github.com/redis/redis-py
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This implementation uses the :ref:`settings redis` setup from ``settings.yml``.
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A redis DB connect can be tested by::
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>>> from searx.shared import redisdb
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>>> redisdb.init()
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True
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>>> db = redisdb.client()
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>>> db.set("foo", "bar")
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True
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>>> db.get("foo")
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b'bar'
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>>>
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"""
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import os
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import pwd
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import logging
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import redis
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from searx import get_setting
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OLD_REDIS_URL_DEFAULT_URL = 'unix:///usr/local/searxng-redis/run/redis.sock?db=0'
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"""This was the default Redis URL in settings.yml."""
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_CLIENT = None
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logger = logging.getLogger('searx.shared.redisdb')
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def client() -> redis.Redis:
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return _CLIENT
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def initialize():
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global _CLIENT # pylint: disable=global-statement
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redis_url = get_setting('redis.url')
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try:
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if redis_url:
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_CLIENT = redis.Redis.from_url(redis_url)
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logger.info("connected redis: %s", redis_url)
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return True
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except redis.exceptions.ConnectionError:
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_pw = pwd.getpwuid(os.getuid())
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logger.exception("[%s (%s)] can't connect redis DB ...", _pw.pw_name, _pw.pw_uid)
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if redis_url == OLD_REDIS_URL_DEFAULT_URL:
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logger.info(
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"You can safely ignore the above Redis error if you don't use Redis."
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"You can remove this error by setting redis.url to false in your settings.yml."
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)
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return False
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