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searxng/searx/shared/redisdb.py
Markus Heiser e85744c254 Revert "[hotfix] interim fix to get docker-build of CI without issues"
This reverts interim fix from commit 50c4b58db and adds requirement
`redis==4.1.1`.

The interim fix was needed by Alpine images (Docker) [1] and has been fixed in
commit [2] merged with the patch series from [3].  In redis-py version 4.1.1
this pach has been released on PyPi [4].

[1] https://github.com/redis/redis-py/issues/1869
[2] https://github.com/redis/redis-py/commit/1fc1233f
[3] https://github.com/redis/redis-py/pull/1854
[4] https://github.com/redis/redis-py/issues/1880

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
2022-01-17 18:03:29 +01:00

47 lines
1.2 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Implementation of the redis client (redis-py_).
.. _redis-py: https://github.com/redis/redis-py
This implementation uses the :ref:`settings redis` setup from ``settings.yml``.
A redis DB connect can be tested by::
>>> from searx.shared import redisdb
>>> redisdb.init()
True
>>> db = redisdb.client()
>>> db.set("foo", "bar")
True
>>> db.get("foo")
b'bar'
>>>
"""
import logging
import redis
from searx import get_setting
logger = logging.getLogger('searx.shared.redis')
_client = None
def client():
global _client # pylint: disable=global-statement
if _client is None:
# not thread safe: in the worst case scenario, two or more clients are
# initialized only one is kept, the others are garbage collected.
_client = redis.Redis.from_url(get_setting('redis.url'))
return _client
def init():
try:
c = client()
logger.info("connected redis DB --> %s", c.acl_whoami())
return True
except redis.exceptions.ConnectionError as exc:
logger.error("can't connet redis DB ...")
logger.error(" %s", exc)
return False