searxngRebrandZaclys/searx/enginelib/__init__.py
Markus Heiser e8706fb738 [fix] engine & network issues / documentation and type annotations
This patch fixes some quirks and issues related to the engines and the network.
Each engine has its own network and this network was broken for the following
engines[1]:

- archlinux
- bing
- dailymotion
- duckduckgo
- google
- peertube
- startpage
- wikipedia

Since the files have been touched anyway, the type annotaions of the engine
modules has also been completed so that error messages from the type checker are
no longer reported.

Related and (partial) fixed issue:

- [1] https://github.com/searxng/searxng/issues/762#issuecomment-1605323861
- [2] https://github.com/searxng/searxng/issues/2513
- [3] https://github.com/searxng/searxng/issues/2515

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
2023-06-25 13:58:26 +02:00

149 lines
3.9 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Engine related implementations
.. note::
The long term goal is to modularize all relevant implementations to the
engines here in this Python package. In addition to improved modularization,
this will also be necessary in part because the probability of circular
imports will increase due to the increased typification of implementations in
the future.
ToDo:
- move :py:obj:`searx.engines.load_engine` to a new module `searx.enginelib`.
"""
from __future__ import annotations
from typing import List, Callable, TYPE_CHECKING
if TYPE_CHECKING:
from searx.enginelib import traits
class Engine: # pylint: disable=too-few-public-methods
"""Class of engine instances build from YAML settings.
Further documentation see :ref:`general engine configuration`.
.. hint::
This class is currently never initialized and only used for type hinting.
"""
# Common options in the engine module
engine_type: str
"""Type of the engine (:origin:`searx/search/processors`)"""
paging: bool
"""Engine supports multiple pages."""
time_range_support: bool
"""Engine supports search time range."""
safesearch: bool
"""Engine supports SafeSearch"""
language_support: bool
"""Engine supports languages (locales) search."""
language: str
"""For an engine, when there is ``language: ...`` in the YAML settings the engine
does support only this one language:
.. code:: yaml
- name: google french
engine: google
language: fr
"""
region: str
"""For an engine, when there is ``region: ...`` in the YAML settings the engine
does support only this one region::
.. code:: yaml
- name: google belgium
engine: google
region: fr-BE
"""
fetch_traits: Callable
"""Function to to fetch engine's traits from origin."""
traits: traits.EngineTraits
"""Traits of the engine."""
# settings.yml
categories: List[str]
"""Specifies to which :ref:`engine categories` the engine should be added."""
name: str
"""Name that will be used across SearXNG to define this engine. In settings, on
the result page .."""
engine: str
"""Name of the python file used to handle requests and responses to and from
this search engine (file name from :origin:`searx/engines` without
``.py``)."""
enable_http: bool
"""Enable HTTP (by default only HTTPS is enabled)."""
shortcut: str
"""Code used to execute bang requests (``!foo``)"""
timeout: float
"""Specific timeout for search-engine."""
display_error_messages: bool
"""Display error messages on the web UI."""
proxies: dict
"""Set proxies for a specific engine (YAML):
.. code:: yaml
proxies :
http: socks5://proxy:port
https: socks5://proxy:port
"""
disabled: bool
"""To disable by default the engine, but not deleting it. It will allow the
user to manually activate it in the settings."""
inactive: bool
"""Remove the engine from the settings (*disabled & removed*)."""
about: dict
"""Additional fileds describing the engine.
.. code:: yaml
about:
website: https://example.com
wikidata_id: Q306656
official_api_documentation: https://example.com/api-doc
use_official_api: true
require_api_key: true
results: HTML
"""
using_tor_proxy: bool
"""Using tor proxy (``true``) or not (``false``) for this engine."""
send_accept_language_header: bool
"""When this option is activated, the language (locale) that is selected by
the user is used to build and send a ``Accept-Language`` header in the
request to the origin search engine."""
tokens: List[str]
"""A list of secret tokens to make this engine *private*, more details see
:ref:`private engines`."""