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Merge pull request #28 from searxng/mod-processors-error-message

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[mod] processors: show identical error messages on /search and /stats
pull/32/head
Alexandre Flament 3 years ago committed by GitHub
parent 4afe5a8075 924f9afea3
commit 87e914e398
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 135 additions and 84 deletions
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32
searx/search/processors/__init__.py
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@ -1,37 +1,49 @@
# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Implement request processores used by engine-types.
"""
__all__ = [
'EngineProcessor',
'OfflineProcessor',
'OnlineProcessor',
'OnlineDictionaryProcessor',
'OnlineCurrencyProcessor',
'processors',
]
from searx import logger
import searx.engines as engines
from .online import OnlineProcessor
from .offline import OfflineProcessor
from .online_dictionary import OnlineDictionaryProcessor
from .online_currency import OnlineCurrencyProcessor
from .abstract import EngineProcessor
from searx import logger
import searx.engines as engines
__all__ = ['EngineProcessor', 'OfflineProcessor', 'OnlineProcessor',
'OnlineDictionaryProcessor', 'OnlineCurrencyProcessor', 'processors']
logger = logger.getChild('search.processors')
processors = {}
"""Cache request processores, stored by *engine-name* (:py:func:`initialize`)"""
def get_processor_class(engine_type):
"""Return processor class according to the ``engine_type``"""
for c in [OnlineProcessor, OfflineProcessor, OnlineDictionaryProcessor, OnlineCurrencyProcessor]:
if c.engine_type == engine_type:
return c
return None
def get_processor(engine, engine_name):
"""Return processor instance that fits to ``engine.engine.type``)"""
engine_type = getattr(engine, 'engine_type', 'online')
processor_class = get_processor_class(engine_type)
if processor_class:
return processor_class(engine, engine_name)
else:
return None
return None
def initialize(engine_list):
"""Initialize all engines and store a processor for each engine in :py:obj:`processors`."""
engines.initialize_engines(engine_list)
for engine_name, engine in engines.engines.items():
processor = get_processor(engine, engine_name)

41
searx/search/processors/abstract.py
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@ -1,4 +1,9 @@
# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Abstract base classes for engine request processores.
"""
import threading
from abc import abstractmethod, ABC
@ -10,12 +15,13 @@ from searx.network import get_time_for_thread, get_network
from searx.metrics import histogram_observe, counter_inc, count_exception, count_error
from searx.exceptions import SearxEngineAccessDeniedException
logger = logger.getChild('searx.search.processor')
SUSPENDED_STATUS = {}
# pylint: disable=missing-function-docstring
class SuspendedStatus:
"""Class to handle suspend state."""
__slots__ = 'suspend_end_time', 'suspend_reason', 'continuous_errors', 'lock'
@ -49,6 +55,7 @@ class SuspendedStatus:
class EngineProcessor(ABC):
"""Base classes used for all types of reqest processores."""
__slots__ = 'engine', 'engine_name', 'lock', 'suspended_status'
@ -59,22 +66,28 @@ class EngineProcessor(ABC):
key = id(key) if key else self.engine_name
self.suspended_status = SUSPENDED_STATUS.setdefault(key, SuspendedStatus())
def handle_exception(self, result_container, reason, exception, suspend=False, display_exception=True):
def handle_exception(self, result_container, exception_or_message, suspend=False):
# update result_container
error_message = str(exception) if display_exception and exception else None
result_container.add_unresponsive_engine(self.engine_name, reason, error_message)
if isinstance(exception_or_message, BaseException):
exception_class = exception_or_message.__class__
module_name = getattr(exception_class, '__module__', 'builtins')
module_name = '' if module_name == 'builtins' else module_name + '.'
error_message = module_name + exception_class.__qualname__
else:
error_message = exception_or_message
result_container.add_unresponsive_engine(self.engine_name, error_message)
# metrics
counter_inc('engine', self.engine_name, 'search', 'count', 'error')
if exception:
count_exception(self.engine_name, exception)
if isinstance(exception_or_message, BaseException):
count_exception(self.engine_name, exception_or_message)
else:
count_error(self.engine_name, reason)
count_error(self.engine_name, exception_or_message)
# suspend the engine ?
if suspend:
suspended_time = None
if isinstance(exception, SearxEngineAccessDeniedException):
suspended_time = exception.suspended_time
self.suspended_status.suspend(suspended_time, reason) # pylint: disable=no-member
if isinstance(exception_or_message, SearxEngineAccessDeniedException):
suspended_time = exception_or_message.suspended_time
self.suspended_status.suspend(suspended_time, error_message) # pylint: disable=no-member
def _extend_container_basic(self, result_container, start_time, search_results):
# update result_container
@ -91,7 +104,7 @@ class EngineProcessor(ABC):
def extend_container(self, result_container, start_time, search_results):
if getattr(threading.current_thread(), '_timeout', False):
# the main thread is not waiting anymore
self.handle_exception(result_container, 'Timeout', None)
self.handle_exception(result_container, 'timeout', None)
else:
# check if the engine accepted the request
if search_results is not None:
@ -137,9 +150,7 @@ class EngineProcessor(ABC):
if tests is None:
tests = getattr(self.engine, 'additional_tests', {})
tests.update(self.get_default_tests())
return tests
else:
return tests
return tests
def get_default_tests(self):
def get_default_tests(self): # pylint: disable=no-self-use
return {}

14
searx/search/processors/offline.py
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@ -1,13 +1,17 @@
# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
from searx import logger
from searx.search.processors.abstract import EngineProcessor
"""Processores for engine-type: ``offline``
"""
logger = logger.getChild('searx.search.processor.offline')
from searx import logger
from .abstract import EngineProcessor
logger = logger.getChild('searx.search.processor.offline')
class OfflineProcessor(EngineProcessor):
"""Processor class used by ``offline`` engines"""
engine_type = 'offline'
@ -21,6 +25,6 @@ class OfflineProcessor(EngineProcessor):
except ValueError as e:
# do not record the error
logger.exception('engine {0} : invalid input : {1}'.format(self.engine_name, e))
except Exception as e:
self.handle_exception(result_container, 'unexpected crash', e)
except Exception as e: # pylint: disable=broad-except
self.handle_exception(result_container, e)
logger.exception('engine {0} : exception : {1}'.format(self.engine_name, e))

34
searx/search/processors/online.py
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@ -1,24 +1,29 @@
# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Processores for engine-type: ``online``
"""
from time import time
import asyncio
import httpx
import searx.network
from searx import logger
from searx.utils import gen_useragent
from searx.exceptions import (SearxEngineAccessDeniedException, SearxEngineCaptchaException,
SearxEngineTooManyRequestsException,)
from searx.exceptions import (
SearxEngineAccessDeniedException,
SearxEngineCaptchaException,
SearxEngineTooManyRequestsException,
)
from searx.metrics.error_recorder import count_error
from searx.search.processors.abstract import EngineProcessor
from .abstract import EngineProcessor
logger = logger.getChild('searx.search.processor.online')
def default_request_params():
"""Default request parameters for ``online`` engines."""
return {
'method': 'GET',
'headers': {},
@ -31,6 +36,7 @@ def default_request_params():
class OnlineProcessor(EngineProcessor):
"""Processor class for ``online`` engines."""
engine_type = 'online'
@ -130,7 +136,7 @@ class OnlineProcessor(EngineProcessor):
self.extend_container(result_container, start_time, search_results)
except (httpx.TimeoutException, asyncio.TimeoutError) as e:
# requests timeout (connect or read)
self.handle_exception(result_container, 'HTTP timeout', e, suspend=True, display_exception=False)
self.handle_exception(result_container, e, suspend=True)
logger.error("engine {0} : HTTP requests timeout"
"(search duration : {1} s, timeout: {2} s) : {3}"
.format(self.engine_name, time() - start_time,
@ -138,23 +144,23 @@ class OnlineProcessor(EngineProcessor):
e.__class__.__name__))
except (httpx.HTTPError, httpx.StreamError) as e:
# other requests exception
self.handle_exception(result_container, 'HTTP error', e, suspend=True, display_exception=False)
self.handle_exception(result_container, e, suspend=True)
logger.exception("engine {0} : requests exception"
"(search duration : {1} s, timeout: {2} s) : {3}"
.format(self.engine_name, time() - start_time,
timeout_limit,
e))
except SearxEngineCaptchaException as e:
self.handle_exception(result_container, 'CAPTCHA required', e, suspend=True, display_exception=False)
self.handle_exception(result_container, e, suspend=True)
logger.exception('engine {0} : CAPTCHA'.format(self.engine_name))
except SearxEngineTooManyRequestsException as e:
self.handle_exception(result_container, 'too many requests', e, suspend=True, display_exception=False)
self.handle_exception(result_container, e, suspend=True)
logger.exception('engine {0} : Too many requests'.format(self.engine_name))
except SearxEngineAccessDeniedException as e:
self.handle_exception(result_container, 'blocked', e, suspend=True, display_exception=False)
self.handle_exception(result_container, e, suspend=True)
logger.exception('engine {0} : Searx is blocked'.format(self.engine_name))
except Exception as e:
self.handle_exception(result_container, 'unexpected crash', e, display_exception=False)
except Exception as e: # pylint: disable=broad-except
self.handle_exception(result_container, e)
logger.exception('engine {0} : exception : {1}'.format(self.engine_name, e))
def get_default_tests(self):

15
searx/search/processors/online_currency.py
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@ -1,4 +1,8 @@
# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Processores for engine-type: ``online_currency``
"""
import unicodedata
import re
@ -6,32 +10,31 @@ import re
from searx.data import CURRENCIES
from .online import OnlineProcessor
parser_re = re.compile('.*?(\\d+(?:\\.\\d+)?) ([^.0-9]+) (?:in|to) ([^.0-9]+)', re.I)
# pylint: disable=missing-function-docstring
def normalize_name(name):
name = name.lower().replace('-', ' ').rstrip('s')
name = re.sub(' +', ' ', name)
return unicodedata.normalize('NFKD', name).lower()
def name_to_iso4217(name):
global CURRENCIES
global CURRENCIES # pylint: disable=global-statement
name = normalize_name(name)
currency = CURRENCIES['names'].get(name, [name])
if isinstance(currency, str):
return currency
return currency[0]
def iso4217_to_name(iso4217, language):
global CURRENCIES
global CURRENCIES # pylint: disable=global-statement
return CURRENCIES['iso4217'].get(iso4217, {}).get(language, iso4217)
class OnlineCurrencyProcessor(OnlineProcessor):
"""Processor class used by ``online_currency`` engines."""
engine_type = 'online_currency'
def get_params(self, search_query, engine_category):

7
searx/search/processors/online_dictionary.py
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@ -1,15 +1,18 @@
# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Processores for engine-type: ``online_dictionary``
"""
import re
from searx.utils import is_valid_lang
from .online import OnlineProcessor
parser_re = re.compile('.*?([a-z]+)-([a-z]+) ([^ ]+)$', re.I)
class OnlineDictionaryProcessor(OnlineProcessor):
"""Processor class used by ``online_dictionnary`` engines."""
engine_type = 'online_dictionnary'

76
searx/webapp.py
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@ -172,28 +172,34 @@ _category_names = (gettext('files'),
gettext('science'))
#
exception_classname_to_label = {
"searx.exceptions.SearxEngineCaptchaException": gettext("CAPTCHA"),
"searx.exceptions.SearxEngineTooManyRequestsException": gettext("too many requests"),
"searx.exceptions.SearxEngineAccessDeniedException": gettext("access denied"),
"searx.exceptions.SearxEngineAPIException": gettext("server API error"),
"httpx.TimeoutException": gettext("HTTP timeout"),
"httpx.ConnectTimeout": gettext("HTTP timeout"),
"httpx.ReadTimeout": gettext("HTTP timeout"),
"httpx.WriteTimeout": gettext("HTTP timeout"),
"httpx.HTTPStatusError": gettext("HTTP error"),
"httpx.ConnectError": gettext("HTTP connection error"),
"httpx.RemoteProtocolError": gettext("HTTP protocol error"),
"httpx.LocalProtocolError": gettext("HTTP protocol error"),
"httpx.ProtocolError": gettext("HTTP protocol error"),
"httpx.ReadError": gettext("network error"),
"httpx.WriteError": gettext("network error"),
"httpx.ProxyError": gettext("proxy error"),
"searx.exceptions.SearxEngineXPathException": gettext("parsing error"),
"KeyError": gettext("parsing error"),
"json.decoder.JSONDecodeError": gettext("parsing error"),
"lxml.etree.ParserError": gettext("parsing error"),
None: gettext("unexpected crash"),
timeout_text = gettext('timeout')
parsing_error_text = gettext('parsing error')
http_protocol_error_text = gettext('HTTP protocol error')
network_error_text = gettext('network error')
exception_classname_to_text = {
None: gettext('unexpected crash'),
'timeout': timeout_text,
'asyncio.TimeoutError': timeout_text,
'httpx.TimeoutException': timeout_text,
'httpx.ConnectTimeout': timeout_text,
'httpx.ReadTimeout': timeout_text,
'httpx.WriteTimeout': timeout_text,
'httpx.HTTPStatusError': gettext('HTTP error'),
'httpx.ConnectError': gettext("HTTP connection error"),
'httpx.RemoteProtocolError': http_protocol_error_text,
'httpx.LocalProtocolError': http_protocol_error_text,
'httpx.ProtocolError': http_protocol_error_text,
'httpx.ReadError': network_error_text,
'httpx.WriteError': network_error_text,
'httpx.ProxyError': gettext("proxy error"),
'searx.exceptions.SearxEngineCaptchaException': gettext("CAPTCHA"),
'searx.exceptions.SearxEngineTooManyRequestsException': gettext("too many requests"),
'searx.exceptions.SearxEngineAccessDeniedException': gettext("access denied"),
'searx.exceptions.SearxEngineAPIException': gettext("server API error"),
'searx.exceptions.SearxEngineXPathException': parsing_error_text,
'KeyError': parsing_error_text,
'json.decoder.JSONDecodeError': parsing_error_text,
'lxml.etree.ParserError': parsing_error_text,
}
_flask_babel_get_translations = flask_babel.get_translations
@ -786,15 +792,21 @@ def search():
def __get_translated_errors(unresponsive_engines):
translated_errors = set()
for unresponsive_engine in unresponsive_engines:
error_msg = gettext(unresponsive_engine[1])
translated_errors = []
# make a copy unresponsive_engines to avoid "RuntimeError: Set changed size during iteration"
# it happens when an engine modifies the ResultContainer after the search_multiple_requests method
# has stopped waiting
for unresponsive_engine in list(unresponsive_engines):
error_user_text = exception_classname_to_text.get(unresponsive_engine[1])
if not error_user_text:
error_user_text = exception_classname_to_text[None]
error_msg = gettext(error_user_text)
if unresponsive_engine[2]:
error_msg = "{} {}".format(error_msg, unresponsive_engine[2])
if unresponsive_engine[3]:
error_msg = gettext('Suspended') + ': ' + error_msg
translated_errors.add((unresponsive_engine[0], error_msg))
return translated_errors
translated_errors.append((unresponsive_engine[0], error_msg))
return sorted(translated_errors, key=lambda e: e[0])
@app.route('/about', methods=['GET'])
@ -944,14 +956,14 @@ def preferences():
# the first element has the highest percentage rate.
reliabilities_errors = []
for error in errors:
error_user_message = None
error_user_text = None
if error.get('secondary') or 'exception_classname' not in error:
continue
error_user_message = exception_classname_to_label.get(error.get('exception_classname'))
error_user_text = exception_classname_to_text.get(error.get('exception_classname'))
if not error:
error_user_message = exception_classname_to_label[None]
if error_user_message not in reliabilities_errors:
reliabilities_errors.append(error_user_message)
error_user_text = exception_classname_to_text[None]
if error_user_text not in reliabilities_errors:
reliabilities_errors.append(error_user_text)
reliabilities[e.name]['errors'] = reliabilities_errors
# supports

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