mirror of
https://github.com/searxng/searxng.git
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86b4d2f2d0
We have been using a static type checker (pyright) for a long time, but its check was not yet a prerequisite for passing the quality gate. It was checked in the CI, but the error messages were only logged. As is always the case in life, with checks that you have to do but which have no consequences; you neglect them :-) We didn't activate the checks back then because we (even today) have too much monkey patching in our code (not only in the engines, httpx and others objects are also affected). We want to replace monkey patching with clear interfaces for a long time, the basis for this is increased typing and we can only achieve this if we make type checking an integral part of the quality gate. This PR activates the type check; in order to pass the check, a few typings were corrected in the code, but most type inconsistencies were deactivated via inline comments. This was particularly necessary in places where the code uses properties that stick to the objects (monkey patching). The sticking of properties only happens in a few places, but the access to these properties extends over the entire code, which is why there are many `# type: ignore` markers in the code ... which we will hopefully be able to remove again successively in the future. Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
117 lines
3.9 KiB
Python
117 lines
3.9 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""Exception types raised by SearXNG modules.
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"""
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from typing import Optional, Union
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class SearxException(Exception):
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"""Base SearXNG exception."""
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class SearxParameterException(SearxException):
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"""Raised when query miss a required parameter"""
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def __init__(self, name, value):
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if value == '' or value is None:
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message = 'Empty ' + name + ' parameter'
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else:
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message = 'Invalid value "' + value + '" for parameter ' + name
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super().__init__(message)
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self.message = message
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self.parameter_name = name
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self.parameter_value = value
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class SearxSettingsException(SearxException):
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"""Error while loading the settings"""
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def __init__(self, message: Union[str, Exception], filename: Optional[str]):
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super().__init__(message)
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self.message = message
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self.filename = filename
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class SearxEngineException(SearxException):
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"""Error inside an engine"""
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class SearxXPathSyntaxException(SearxEngineException):
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"""Syntax error in a XPATH"""
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def __init__(self, xpath_spec, message):
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super().__init__(str(xpath_spec) + " " + message)
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self.message = message
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# str(xpath_spec) to deal with str and XPath instance
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self.xpath_str = str(xpath_spec)
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class SearxEngineResponseException(SearxEngineException):
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"""Impossible to parse the result of an engine"""
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class SearxEngineAPIException(SearxEngineResponseException):
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"""The website has returned an application error"""
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class SearxEngineAccessDeniedException(SearxEngineResponseException):
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"""The website is blocking the access"""
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SUSPEND_TIME_SETTING = "search.suspended_times.SearxEngineAccessDenied"
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"""This settings contains the default suspended time (default 86400 sec / 1
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day)."""
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def __init__(self, suspended_time: int = 0, message: str = 'Access denied'):
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"""Generic exception to raise when an engine denies access to the results.
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:param suspended_time: How long the engine is going to be suspended in
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second. Defaults to None.
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:type suspended_time: int, None
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:param message: Internal message. Defaults to ``Access denied``
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:type message: str
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"""
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suspended_time = suspended_time or self._get_default_suspended_time()
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super().__init__(message + ', suspended_time=' + str(suspended_time))
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self.suspended_time = suspended_time
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self.message = message
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def _get_default_suspended_time(self) -> int:
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from searx import get_setting # pylint: disable=C0415
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return get_setting(self.SUSPEND_TIME_SETTING) # type: ignore
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class SearxEngineCaptchaException(SearxEngineAccessDeniedException):
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"""The website has returned a CAPTCHA."""
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SUSPEND_TIME_SETTING = "search.suspended_times.SearxEngineCaptcha"
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"""This settings contains the default suspended time (default 86400 sec / 1
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day)."""
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def __init__(self, suspended_time=None, message='CAPTCHA'):
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super().__init__(message=message, suspended_time=suspended_time)
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class SearxEngineTooManyRequestsException(SearxEngineAccessDeniedException):
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"""The website has returned a Too Many Request status code
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By default, searx stops sending requests to this engine for 1 hour.
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"""
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SUSPEND_TIME_SETTING = "search.suspended_times.SearxEngineTooManyRequests"
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"""This settings contains the default suspended time (default 3660 sec / 1
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hour)."""
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def __init__(self, suspended_time=None, message='Too many request'):
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super().__init__(message=message, suspended_time=suspended_time)
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class SearxEngineXPathException(SearxEngineResponseException):
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"""Error while getting the result of an XPath expression"""
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def __init__(self, xpath_spec, message):
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super().__init__(str(xpath_spec) + " " + message)
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self.message = message
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# str(xpath_spec) to deal with str and XPath instance
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self.xpath_str = str(xpath_spec)
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