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# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
# pyright: basic
"""see :ref:`limiter src`"""
import sys
import flask
from searx import redisdb
from searx.plugins import logger
from searx.botdetection import limiter
name = "Request limiter"
description = "Limit the number of request"
default_on = False
preference_section = 'service'
logger = logger.getChild('limiter')
def pre_request():
"""See :ref:`flask.Flask.before_request`"""
return limiter.filter_request(flask.request)
def init(app: flask.Flask, settings) -> bool:
if not settings['server']['limiter'] and not settings['server']['public_instance']:
return False
if not redisdb.client():
logger.error(
"The limiter requires Redis, please consult the documentation: "
+ "https://docs.searxng.org/admin/searx.botdetection.html#limiter"
)
if settings['server']['public_instance']:
sys.exit(1)
return False
app.before_request(pre_request)
return True
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