Merge pull request #708 from not-my-profile/pref-refactor

Refactor `preferences`
This commit is contained in:
Martin Fischer 2022-01-07 09:45:23 +01:00 committed by GitHub
commit e12525a1fa
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4 changed files with 137 additions and 166 deletions

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@ -13,7 +13,7 @@ usage::
import sys
import copy
from typing import List
from typing import Dict, List, Optional
from os.path import realpath, dirname
from babel.localedata import locale_identifiers
@ -67,10 +67,10 @@ class Engine: # pylint: disable=too-few-public-methods
timeout: float
# Defaults for the namespace of an engine module, see :py:func:`load_engine``
# Defaults for the namespace of an engine module, see :py:func:`load_engine`
categories = {'general': []}
engines = {}
engines: Dict[str, Engine] = {}
engine_shortcuts = {}
"""Simple map of registered *shortcuts* to name of the engine (or ``None``).
@ -81,7 +81,7 @@ engine_shortcuts = {}
"""
def load_engine(engine_data):
def load_engine(engine_data: dict) -> Optional[Engine]:
"""Load engine from ``engine_data``.
:param dict engine_data: Attributes from YAML ``settings:engines/<engine>``
@ -157,7 +157,7 @@ def set_loggers(engine, engine_name):
module.logger = logger.getChild(module_engine_name)
def update_engine_attributes(engine, engine_data):
def update_engine_attributes(engine: Engine, engine_data):
# set engine attributes from engine_data
for param_name, param_value in engine_data.items():
if param_name == 'categories':
@ -175,7 +175,7 @@ def update_engine_attributes(engine, engine_data):
setattr(engine, arg_name, copy.deepcopy(arg_value))
def set_language_attributes(engine):
def set_language_attributes(engine: Engine):
# assign supported languages from json file
if engine.name in ENGINES_LANGUAGES:
engine.supported_languages = ENGINES_LANGUAGES[engine.name]
@ -248,7 +248,7 @@ def is_missing_required_attributes(engine):
return missing
def is_engine_active(engine):
def is_engine_active(engine: Engine):
# check if engine is inactive
if engine.inactive is True:
return False
@ -260,7 +260,7 @@ def is_engine_active(engine):
return True
def register_engine(engine):
def register_engine(engine: Engine):
if engine.name in engines:
logger.error('Engine config error: ambigious name: {0}'.format(engine.name))
sys.exit(1)

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@ -10,10 +10,20 @@ from os.path import abspath, basename, dirname, exists, join
from shutil import copyfile
from pkgutil import iter_modules
from logging import getLogger
from typing import List
from searx import logger, settings
class Plugin: # pylint: disable=too-few-public-methods
"""This class is currently never initialized and only used for type hinting."""
id: str
name: str
description: str
default_on: bool
logger = logger.getChild("plugins")
required_attrs = (
@ -175,7 +185,7 @@ def load_and_initialize_plugin(plugin_module_name, external, init_args):
class PluginStore:
def __init__(self):
self.plugins = []
self.plugins: List[Plugin] = []
def __iter__(self):
for plugin in self.plugins:

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@ -8,44 +8,36 @@
from base64 import urlsafe_b64encode, urlsafe_b64decode
from zlib import compress, decompress
from urllib.parse import parse_qs, urlencode
from typing import Iterable, Dict, List
import flask
from searx import settings, autocomplete
from searx.engines import Engine
from searx.plugins import Plugin
from searx.locales import LOCALE_NAMES
from searx.webutils import VALID_LANGUAGE_CODE
from searx.engines import OTHER_CATEGORY
COOKIE_MAX_AGE = 60 * 60 * 24 * 365 * 5 # 5 years
DISABLED = 0
ENABLED = 1
DOI_RESOLVERS = list(settings['doi_resolvers'])
class MissingArgumentException(Exception):
"""Exption from ``cls._post_init`` when a argument is missed."""
class ValidationException(Exception):
"""Exption from ``cls._post_init`` when configuration value is invalid."""
"""Exption from ``cls.__init__`` when configuration value is invalid."""
class Setting:
"""Base class of user settings"""
def __init__(self, default_value, locked=False, **kwargs):
def __init__(self, default_value, locked: bool = False):
super().__init__()
self.value = default_value
self.locked = locked
for key, value in kwargs.items():
setattr(self, key, value)
self._post_init()
def _post_init(self):
pass
def parse(self, data):
def parse(self, data: str):
"""Parse ``data`` and store the result at ``self.value``
If needed, its overwritten in the inheritance.
@ -59,7 +51,7 @@ class Setting:
"""
return self.value
def save(self, name, resp):
def save(self, name: str, resp: flask.Response):
"""Save cookie ``name`` in the HTTP reponse obect
If needed, its overwritten in the inheritance."""
@ -73,35 +65,35 @@ class StringSetting(Setting):
class EnumStringSetting(Setting):
"""Setting of a value which can only come from the given choices"""
def _post_init(self):
if not hasattr(self, 'choices'):
raise MissingArgumentException('Missing argument: choices')
def __init__(self, default_value: str, choices: Iterable[str], locked=False):
super().__init__(default_value, locked)
self.choices = choices
self._validate_selection(self.value)
def _validate_selection(self, selection):
if selection not in self.choices: # pylint: disable=no-member
def _validate_selection(self, selection: str):
if selection not in self.choices:
raise ValidationException('Invalid value: "{0}"'.format(selection))
def parse(self, data):
def parse(self, data: str):
"""Parse and validate ``data`` and store the result at ``self.value``"""
self._validate_selection(data)
self.value = data
class MultipleChoiceSetting(EnumStringSetting):
class MultipleChoiceSetting(Setting):
"""Setting of values which can only come from the given choices"""
def _validate_selections(self, selections):
for item in selections:
if item not in self.choices: # pylint: disable=no-member
raise ValidationException('Invalid value: "{0}"'.format(selections))
def _post_init(self):
if not hasattr(self, 'choices'):
raise MissingArgumentException('Missing argument: choices')
def __init__(self, default_value: List[str], choices: Iterable[str], locked=False):
super().__init__(default_value, locked)
self.choices = choices
self._validate_selections(self.value)
def parse(self, data):
def _validate_selections(self, selections: List[str]):
for item in selections:
if item not in self.choices:
raise ValidationException('Invalid value: "{0}"'.format(selections))
def parse(self, data: str):
"""Parse and validate ``data`` and store the result at ``self.value``"""
if data == '':
self.value = []
@ -111,16 +103,16 @@ class MultipleChoiceSetting(EnumStringSetting):
self._validate_selections(elements)
self.value = elements
def parse_form(self, data):
def parse_form(self, data: List[str]):
if self.locked:
return
self.value = []
for choice in data:
if choice in self.choices and choice not in self.value: # pylint: disable=no-member
if choice in self.choices and choice not in self.value:
self.value.append(choice)
def save(self, name, resp):
def save(self, name: str, resp: flask.Response):
"""Save cookie ``name`` in the HTTP reponse obect"""
resp.set_cookie(name, ','.join(self.value), max_age=COOKIE_MAX_AGE)
@ -128,32 +120,32 @@ class MultipleChoiceSetting(EnumStringSetting):
class SetSetting(Setting):
"""Setting of values of type ``set`` (comma separated string)"""
def _post_init(self):
if not hasattr(self, 'values'):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.values = set()
def get_value(self):
"""Returns a string with comma separated values."""
return ','.join(self.values)
def parse(self, data):
def parse(self, data: str):
"""Parse and validate ``data`` and store the result at ``self.value``"""
if data == '':
self.values = set() # pylint: disable=attribute-defined-outside-init
self.values = set()
return
elements = data.split(',')
for element in elements:
self.values.add(element)
def parse_form(self, data):
def parse_form(self, data: str):
if self.locked:
return
elements = data.split(',')
self.values = set(elements) # pylint: disable=attribute-defined-outside-init
self.values = set(elements)
def save(self, name, resp):
def save(self, name: str, resp: flask.Response):
"""Save cookie ``name`` in the HTTP reponse obect"""
resp.set_cookie(name, ','.join(self.values), max_age=COOKIE_MAX_AGE)
@ -165,13 +157,13 @@ class SearchLanguageSetting(EnumStringSetting):
if selection != '' and not VALID_LANGUAGE_CODE.match(selection):
raise ValidationException('Invalid language code: "{0}"'.format(selection))
def parse(self, data):
def parse(self, data: str):
"""Parse and validate ``data`` and store the result at ``self.value``"""
if data not in self.choices and data != self.value: # pylint: disable=no-member
if data not in self.choices and data != self.value:
# hack to give some backwards compatibility with old language cookies
data = str(data).replace('_', '-')
lang = data.split('-', maxsplit=1)[0]
# pylint: disable=no-member
if data in self.choices:
pass
elif lang in self.choices:
@ -185,34 +177,34 @@ class SearchLanguageSetting(EnumStringSetting):
class MapSetting(Setting):
"""Setting of a value that has to be translated in order to be storable"""
def _post_init(self):
if not hasattr(self, 'map'):
raise MissingArgumentException('missing argument: map')
if self.value not in self.map.values(): # pylint: disable=no-member
def __init__(self, default_value, map: Dict[str, object], locked=False): # pylint: disable=redefined-builtin
super().__init__(default_value, locked)
self.map = map
if self.value not in self.map.values():
raise ValidationException('Invalid default value')
def parse(self, data):
def parse(self, data: str):
"""Parse and validate ``data`` and store the result at ``self.value``"""
# pylint: disable=no-member
if data not in self.map:
raise ValidationException('Invalid choice: {0}'.format(data))
self.value = self.map[data]
self.key = data # pylint: disable=attribute-defined-outside-init
def save(self, name, resp):
def save(self, name: str, resp: flask.Response):
"""Save cookie ``name`` in the HTTP reponse obect"""
if hasattr(self, 'key'):
resp.set_cookie(name, self.key, max_age=COOKIE_MAX_AGE)
class SwitchableSetting(Setting):
"""Base class for settings that can be turned on && off"""
class BooleanChoices:
"""Maps strings to booleans that are either true or false."""
def _post_init(self):
self.disabled = set()
self.enabled = set()
if not hasattr(self, 'choices'):
raise MissingArgumentException('missing argument: choices')
def __init__(self, name: str, choices: Dict[str, bool], locked: bool = False):
self.name = name
self.choices = choices
self.locked = locked
def transform_form_items(self, items):
# pylint: disable=no-self-use
@ -222,63 +214,54 @@ class SwitchableSetting(Setting):
# pylint: disable=no-self-use
return values
def parse_cookie(self, data):
# pylint: disable=attribute-defined-outside-init
if data[DISABLED] != '':
self.disabled = set(data[DISABLED].split(','))
if data[ENABLED] != '':
self.enabled = set(data[ENABLED].split(','))
def parse_cookie(self, data_disabled: str, data_enabled: str):
for disabled in data_disabled.split(','):
if disabled in self.choices:
self.choices[disabled] = False
def parse_form(self, items):
for enabled in data_enabled.split(','):
if enabled in self.choices:
self.choices[enabled] = True
def parse_form(self, items: List[str]):
if self.locked:
return
items = self.transform_form_items(items)
self.disabled = set() # pylint: disable=attribute-defined-outside-init
self.enabled = set() # pylint: disable=attribute-defined-outside-init
for choice in self.choices: # pylint: disable=no-member
if choice['default_on']:
if choice['id'] in items:
self.disabled.add(choice['id'])
else:
if choice['id'] not in items:
self.enabled.add(choice['id'])
disabled = self.transform_form_items(items)
for setting in self.choices:
self.choices[setting] = setting not in disabled
def save(self, resp): # pylint: disable=arguments-differ
@property
def enabled(self):
return (k for k, v in self.choices.items() if v)
@property
def disabled(self):
return (k for k, v in self.choices.items() if not v)
def save(self, resp: flask.Response):
"""Save cookie in the HTTP reponse obect"""
resp.set_cookie('disabled_{0}'.format(self.value), ','.join(self.disabled), max_age=COOKIE_MAX_AGE)
resp.set_cookie('enabled_{0}'.format(self.value), ','.join(self.enabled), max_age=COOKIE_MAX_AGE)
resp.set_cookie('disabled_{0}'.format(self.name), ','.join(self.disabled), max_age=COOKIE_MAX_AGE)
resp.set_cookie('enabled_{0}'.format(self.name), ','.join(self.enabled), max_age=COOKIE_MAX_AGE)
def get_disabled(self):
disabled = self.disabled
for choice in self.choices: # pylint: disable=no-member
if not choice['default_on'] and choice['id'] not in self.enabled:
disabled.add(choice['id'])
return self.transform_values(disabled)
return self.transform_values(list(self.disabled))
def get_enabled(self):
enabled = self.enabled
for choice in self.choices: # pylint: disable=no-member
if choice['default_on'] and choice['id'] not in self.disabled:
enabled.add(choice['id'])
return self.transform_values(enabled)
return self.transform_values(list(self.enabled))
class EnginesSetting(SwitchableSetting):
class EnginesSetting(BooleanChoices):
"""Engine settings"""
def _post_init(self):
super()._post_init()
transformed_choices = []
for engine_name, engine in self.choices.items(): # pylint: disable=no-member,access-member-before-definition
def __init__(self, default_value, engines: Iterable[Engine]):
choices = {}
for engine in engines:
for category in engine.categories:
if not category in list(settings['categories_as_tabs'].keys()) + [OTHER_CATEGORY]:
continue
transformed_choice = {}
transformed_choice['default_on'] = not engine.disabled
transformed_choice['id'] = '{}__{}'.format(engine_name, category)
transformed_choices.append(transformed_choice)
self.choices = transformed_choices
choices['{}__{}'.format(engine.name, category)] = not engine.disabled
super().__init__(default_value, choices)
def transform_form_items(self, items):
return [item[len('engine_') :].replace('_', ' ').replace(' ', '__') for item in items]
@ -293,18 +276,11 @@ class EnginesSetting(SwitchableSetting):
return transformed_values
class PluginsSetting(SwitchableSetting):
class PluginsSetting(BooleanChoices):
"""Plugin settings"""
def _post_init(self):
super()._post_init()
transformed_choices = []
for plugin in self.choices: # pylint: disable=access-member-before-definition
transformed_choice = {}
transformed_choice['default_on'] = plugin.default_on
transformed_choice['id'] = plugin.id
transformed_choices.append(transformed_choice)
self.choices = transformed_choices
def __init__(self, default_value, plugins: Iterable[Plugin]):
super().__init__(default_value, {plugin.id: plugin.default_on for plugin in plugins})
def transform_form_items(self, items):
return [item[len('plugin_') :] for item in items]
@ -313,34 +289,34 @@ class PluginsSetting(SwitchableSetting):
class Preferences:
"""Validates and saves preferences to cookies"""
def __init__(self, themes, categories, engines, plugins):
def __init__(self, themes: List[str], categories: List[str], engines: Dict[str, Engine], plugins: Iterable[Plugin]):
super().__init__()
self.key_value_settings = {
self.key_value_settings: Dict[str, Setting] = {
# fmt: off
'categories': MultipleChoiceSetting(
['general'],
is_locked('categories'),
locked=is_locked('categories'),
choices=categories + ['none']
),
'language': SearchLanguageSetting(
settings['search']['default_lang'],
is_locked('language'),
locked=is_locked('language'),
choices=settings['search']['languages'] + ['']
),
'locale': EnumStringSetting(
settings['ui']['default_locale'],
is_locked('locale'),
locked=is_locked('locale'),
choices=list(LOCALE_NAMES.keys()) + ['']
),
'autocomplete': EnumStringSetting(
settings['search']['autocomplete'],
is_locked('autocomplete'),
locked=is_locked('autocomplete'),
choices=list(autocomplete.backends.keys()) + ['']
),
'image_proxy': MapSetting(
settings['server']['image_proxy'],
is_locked('image_proxy'),
locked=is_locked('image_proxy'),
map={
'': settings['server']['image_proxy'],
'0': False,
@ -351,12 +327,12 @@ class Preferences:
),
'method': EnumStringSetting(
settings['server']['method'],
is_locked('method'),
locked=is_locked('method'),
choices=('GET', 'POST')
),
'safesearch': MapSetting(
settings['search']['safe_search'],
is_locked('safesearch'),
locked=is_locked('safesearch'),
map={
'0': 0,
'1': 1,
@ -365,12 +341,12 @@ class Preferences:
),
'theme': EnumStringSetting(
settings['ui']['default_theme'],
is_locked('theme'),
locked=is_locked('theme'),
choices=themes
),
'results_on_new_tab': MapSetting(
settings['ui']['results_on_new_tab'],
is_locked('results_on_new_tab'),
locked=is_locked('results_on_new_tab'),
map={
'0': False,
'1': True,
@ -380,22 +356,22 @@ class Preferences:
),
'doi_resolver': MultipleChoiceSetting(
[settings['default_doi_resolver'], ],
is_locked('doi_resolver'),
locked=is_locked('doi_resolver'),
choices=DOI_RESOLVERS
),
'oscar-style': EnumStringSetting(
settings['ui']['theme_args']['oscar_style'],
is_locked('oscar-style'),
locked=is_locked('oscar-style'),
choices=['', 'logicodev', 'logicodev-dark', 'pointhi']
),
'simple_style': EnumStringSetting(
settings['ui']['theme_args']['simple_style'],
is_locked('simple_style'),
locked=is_locked('simple_style'),
choices=['', 'auto', 'light', 'dark']
),
'advanced_search': MapSetting(
settings['ui']['advanced_search'],
is_locked('advanced_search'),
locked=is_locked('advanced_search'),
map={
'0': False,
'1': True,
@ -406,7 +382,7 @@ class Preferences:
),
'query_in_title': MapSetting(
settings['ui']['query_in_title'],
is_locked('query_in_title'),
locked=is_locked('query_in_title'),
map={
'': settings['ui']['query_in_title'],
'0': False,
@ -418,10 +394,10 @@ class Preferences:
# fmt: on
}
self.engines = EnginesSetting('engines', choices=engines)
self.plugins = PluginsSetting('plugins', choices=plugins)
self.engines = EnginesSetting('engines', engines=engines.values())
self.plugins = PluginsSetting('plugins', plugins=plugins)
self.tokens = SetSetting('tokens')
self.unknown_params = {}
self.unknown_params: Dict[str, str] = {}
def get_as_url_params(self):
"""Return preferences as URL parameters"""
@ -444,7 +420,7 @@ class Preferences:
return urlsafe_b64encode(compress(urlencode(settings_kv).encode())).decode()
def parse_encoded_data(self, input_data):
def parse_encoded_data(self, input_data: str):
"""parse (base64) preferences from request (``flask.request.form['preferences']``)"""
bin_data = decompress(urlsafe_b64decode(input_data))
dict_data = {}
@ -452,7 +428,7 @@ class Preferences:
dict_data[x] = y[0]
self.parse_dict(dict_data)
def parse_dict(self, input_data):
def parse_dict(self, input_data: Dict[str, str]):
"""parse preferences from request (``flask.request.form``)"""
for user_setting_name, user_setting in input_data.items():
if user_setting_name in self.key_value_settings:
@ -460,13 +436,9 @@ class Preferences:
continue
self.key_value_settings[user_setting_name].parse(user_setting)
elif user_setting_name == 'disabled_engines':
self.engines.parse_cookie(
(input_data.get('disabled_engines', ''), input_data.get('enabled_engines', ''))
)
self.engines.parse_cookie(input_data.get('disabled_engines', ''), input_data.get('enabled_engines', ''))
elif user_setting_name == 'disabled_plugins':
self.plugins.parse_cookie(
(input_data.get('disabled_plugins', ''), input_data.get('enabled_plugins', ''))
)
self.plugins.parse_cookie(input_data.get('disabled_plugins', ''), input_data.get('enabled_plugins', ''))
elif user_setting_name == 'tokens':
self.tokens.parse(user_setting)
elif not any(
@ -474,7 +446,7 @@ class Preferences:
):
self.unknown_params[user_setting_name] = user_setting
def parse_form(self, input_data):
def parse_form(self, input_data: Dict[str, str]):
"""Parse formular (``<input>``) data from a ``flask.request.form``"""
disabled_engines = []
enabled_categories = []
@ -497,7 +469,7 @@ class Preferences:
self.plugins.parse_form(disabled_plugins)
# cannot be used in case of engines or plugins
def get_value(self, user_setting_name):
def get_value(self, user_setting_name: str):
"""Returns the value for ``user_setting_name``"""
ret_val = None
if user_setting_name in self.key_value_settings:
@ -506,7 +478,7 @@ class Preferences:
ret_val = self.unknown_params[user_setting_name]
return ret_val
def save(self, resp):
def save(self, resp: flask.Response):
"""Save cookie in the HTTP reponse obect"""
for user_setting_name, user_setting in self.key_value_settings.items():
# pylint: disable=unnecessary-dict-index-lookup
@ -532,7 +504,7 @@ class Preferences:
return valid
def is_locked(setting_name):
def is_locked(setting_name: str):
"""Checks if a given setting name is locked by settings.yml"""
if 'preferences' not in settings:
return False

View File

@ -1,7 +1,6 @@
from searx.preferences import (
EnumStringSetting,
MapSetting,
MissingArgumentException,
SearchLanguageSetting,
MultipleChoiceSetting,
PluginsSetting,
@ -19,10 +18,6 @@ class PluginStub:
class TestSettings(SearxTestCase):
# map settings
def test_map_setting_invalid_initialization(self):
with self.assertRaises(MissingArgumentException):
MapSetting(3, wrong_argument={'0': 0})
def test_map_setting_invalid_default_value(self):
with self.assertRaises(ValidationException):
MapSetting(3, map={'dog': 1, 'bat': 2})
@ -43,9 +38,6 @@ class TestSettings(SearxTestCase):
self.assertEqual(setting.get_value(), 2)
# enum settings
def test_enum_setting_invalid_initialization(self):
with self.assertRaises(MissingArgumentException):
EnumStringSetting('cat', wrong_argument=[0, 1, 2])
def test_enum_setting_invalid_default_value(self):
with self.assertRaises(ValidationException):
@ -67,9 +59,6 @@ class TestSettings(SearxTestCase):
self.assertEqual(setting.get_value(), 2)
# multiple choice settings
def test_multiple_setting_invalid_initialization(self):
with self.assertRaises(MissingArgumentException):
MultipleChoiceSetting(['2'], wrong_argument=['0', '1', '2'])
def test_multiple_setting_invalid_default_value(self):
with self.assertRaises(ValidationException):
@ -115,15 +104,15 @@ class TestSettings(SearxTestCase):
def test_plugins_setting_all_default_enabled(self):
plugin1 = PluginStub('plugin1', True)
plugin2 = PluginStub('plugin2', True)
setting = PluginsSetting(['3'], choices=[plugin1, plugin2])
self.assertEqual(setting.get_enabled(), set(['plugin1', 'plugin2']))
setting = PluginsSetting(['3'], plugins=[plugin1, plugin2])
self.assertEqual(set(setting.get_enabled()), set(['plugin1', 'plugin2']))
def test_plugins_setting_few_default_enabled(self):
plugin1 = PluginStub('plugin1', True)
plugin2 = PluginStub('plugin2', False)
plugin3 = PluginStub('plugin3', True)
setting = PluginsSetting('name', choices=[plugin1, plugin2, plugin3])
self.assertEqual(setting.get_enabled(), set(['plugin1', 'plugin3']))
setting = PluginsSetting('name', plugins=[plugin1, plugin2, plugin3])
self.assertEqual(set(setting.get_enabled()), set(['plugin1', 'plugin3']))
class TestPreferences(SearxTestCase):