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settings.yml: * outgoing.networks: * can contains network definition * propertiers: enable_http, verify, http2, max_connections, max_keepalive_connections, keepalive_expiry, local_addresses, support_ipv4, support_ipv6, proxies, max_redirects, retries * retries: 0 by default, number of times searx retries to send the HTTP request (using different IP & proxy each time) * local_addresses can be "192.168.0.1/24" (it supports IPv6) * support_ipv4 & support_ipv6: both True by default see https://github.com/searx/searx/pull/1034 * each engine can define a "network" section: * either a full network description * either reference an existing network * all HTTP requests of engine use the same HTTP configuration (it was not the case before, see proxy configuration in master)
695 lines
25 KiB
Python
695 lines
25 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""
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Wikidata
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"""
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from urllib.parse import urlencode
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from json import loads
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from dateutil.parser import isoparse
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from babel.dates import format_datetime, format_date, format_time, get_datetime_format
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from searx import logger
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from searx.data import WIKIDATA_UNITS
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from searx.network import post, get
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from searx.utils import match_language, searx_useragent, get_string_replaces_function
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from searx.external_urls import get_external_url, get_earth_coordinates_url, area_to_osm_zoom
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from searx.engines.wikipedia import _fetch_supported_languages, supported_languages_url # NOQA # pylint: disable=unused-import
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logger = logger.getChild('wikidata')
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# about
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about = {
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"website": 'https://wikidata.org/',
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"wikidata_id": 'Q2013',
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"official_api_documentation": 'https://query.wikidata.org/',
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"use_official_api": True,
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"require_api_key": False,
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"results": 'JSON',
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}
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# SPARQL
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SPARQL_ENDPOINT_URL = 'https://query.wikidata.org/sparql'
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SPARQL_EXPLAIN_URL = 'https://query.wikidata.org/bigdata/namespace/wdq/sparql?explain'
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WIKIDATA_PROPERTIES = {
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'P434': 'MusicBrainz',
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'P435': 'MusicBrainz',
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'P436': 'MusicBrainz',
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'P966': 'MusicBrainz',
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'P345': 'IMDb',
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'P2397': 'YouTube',
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'P1651': 'YouTube',
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'P2002': 'Twitter',
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'P2013': 'Facebook',
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'P2003': 'Instagram',
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}
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# SERVICE wikibase:mwapi : https://www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual/MWAPI
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# SERVICE wikibase:label: https://en.wikibooks.org/wiki/SPARQL/SERVICE_-_Label#Manual_Label_SERVICE
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# https://en.wikibooks.org/wiki/SPARQL/WIKIDATA_Precision,_Units_and_Coordinates
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# https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format#Data_model
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# optmization:
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# * https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/query_optimization
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# * https://github.com/blazegraph/database/wiki/QueryHints
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QUERY_TEMPLATE = """
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SELECT ?item ?itemLabel ?itemDescription ?lat ?long %SELECT%
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WHERE
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{
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SERVICE wikibase:mwapi {
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bd:serviceParam wikibase:endpoint "www.wikidata.org";
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wikibase:api "EntitySearch";
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wikibase:limit 1;
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mwapi:search "%QUERY%";
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mwapi:language "%LANGUAGE%".
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?item wikibase:apiOutputItem mwapi:item.
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}
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%WHERE%
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SERVICE wikibase:label {
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bd:serviceParam wikibase:language "%LANGUAGE%,en".
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?item rdfs:label ?itemLabel .
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?item schema:description ?itemDescription .
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%WIKIBASE_LABELS%
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}
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}
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GROUP BY ?item ?itemLabel ?itemDescription ?lat ?long %GROUP_BY%
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"""
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# Get the calendar names and the property names
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QUERY_PROPERTY_NAMES = """
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SELECT ?item ?name
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WHERE {
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{
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SELECT ?item
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WHERE { ?item wdt:P279* wd:Q12132 }
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} UNION {
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VALUES ?item { %ATTRIBUTES% }
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}
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OPTIONAL { ?item rdfs:label ?name. }
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}
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"""
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# https://www.w3.org/TR/sparql11-query/#rSTRING_LITERAL1
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# https://lists.w3.org/Archives/Public/public-rdf-dawg/2011OctDec/0175.html
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sparql_string_escape = get_string_replaces_function({'\t': '\\\t',
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'\n': '\\\n',
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'\r': '\\\r',
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'\b': '\\\b',
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'\f': '\\\f',
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'\"': '\\\"',
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'\'': '\\\'',
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'\\': '\\\\'})
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replace_http_by_https = get_string_replaces_function({'http:': 'https:'})
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def get_headers():
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# user agent: https://www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual#Query_limits
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return {
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'Accept': 'application/sparql-results+json',
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'User-Agent': searx_useragent()
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}
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def get_label_for_entity(entity_id, language):
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name = WIKIDATA_PROPERTIES.get(entity_id)
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if name is None:
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name = WIKIDATA_PROPERTIES.get((entity_id, language))
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if name is None:
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name = WIKIDATA_PROPERTIES.get((entity_id, language.split('-')[0]))
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if name is None:
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name = WIKIDATA_PROPERTIES.get((entity_id, 'en'))
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if name is None:
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name = entity_id
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return name
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def send_wikidata_query(query, method='GET'):
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if method == 'GET':
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# query will be cached by wikidata
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http_response = get(SPARQL_ENDPOINT_URL + '?' + urlencode({'query': query}), headers=get_headers())
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else:
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# query won't be cached by wikidata
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http_response = post(SPARQL_ENDPOINT_URL, data={'query': query}, headers=get_headers())
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if http_response.status_code != 200:
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logger.debug('SPARQL endpoint error %s', http_response.content.decode())
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logger.debug('request time %s', str(http_response.elapsed))
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http_response.raise_for_status()
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return loads(http_response.content.decode())
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def request(query, params):
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language = params['language'].split('-')[0]
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if language == 'all':
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language = 'en'
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else:
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language = match_language(params['language'], supported_languages, language_aliases).split('-')[0]
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query, attributes = get_query(query, language)
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params['method'] = 'POST'
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params['url'] = SPARQL_ENDPOINT_URL
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params['data'] = {'query': query}
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params['headers'] = get_headers()
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params['language'] = language
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params['attributes'] = attributes
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return params
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def response(resp):
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results = []
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jsonresponse = loads(resp.content.decode())
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language = resp.search_params['language'].lower()
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attributes = resp.search_params['attributes']
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seen_entities = set()
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for result in jsonresponse.get('results', {}).get('bindings', []):
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attribute_result = {key: value['value'] for key, value in result.items()}
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entity_url = attribute_result['item']
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if entity_url not in seen_entities:
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seen_entities.add(entity_url)
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results += get_results(attribute_result, attributes, language)
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else:
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logger.debug('The SPARQL request returns duplicate entities: %s', str(attribute_result))
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return results
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def get_results(attribute_result, attributes, language):
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results = []
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infobox_title = attribute_result.get('itemLabel')
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infobox_id = attribute_result['item']
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infobox_id_lang = None
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infobox_urls = []
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infobox_attributes = []
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infobox_content = attribute_result.get('itemDescription', [])
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img_src = None
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img_src_priority = 100
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for attribute in attributes:
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value = attribute.get_str(attribute_result, language)
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if value is not None and value != '':
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attribute_type = type(attribute)
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if attribute_type in (WDURLAttribute, WDArticle):
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# get_select() method : there is group_concat(distinct ...;separator=", ")
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# split the value here
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for url in value.split(', '):
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infobox_urls.append({'title': attribute.get_label(language), 'url': url, **attribute.kwargs})
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# "normal" results (not infobox) include official website and Wikipedia links.
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if attribute.kwargs.get('official') or attribute_type == WDArticle:
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results.append({'title': infobox_title, 'url': url})
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# update the infobox_id with the wikipedia URL
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# first the local wikipedia URL, and as fallback the english wikipedia URL
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if attribute_type == WDArticle\
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and ((attribute.language == 'en' and infobox_id_lang is None)
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or attribute.language != 'en'):
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infobox_id_lang = attribute.language
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infobox_id = url
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elif attribute_type == WDImageAttribute:
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# this attribute is an image.
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# replace the current image only the priority is lower
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# (the infobox contain only one image).
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if attribute.priority < img_src_priority:
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img_src = value
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img_src_priority = attribute.priority
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elif attribute_type == WDGeoAttribute:
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# geocoordinate link
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# use the area to get the OSM zoom
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# Note: ignre the unit (must be km² otherwise the calculation is wrong)
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# Should use normalized value p:P2046/psn:P2046/wikibase:quantityAmount
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area = attribute_result.get('P2046')
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osm_zoom = area_to_osm_zoom(area) if area else 19
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url = attribute.get_geo_url(attribute_result, osm_zoom=osm_zoom)
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if url:
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infobox_urls.append({'title': attribute.get_label(language),
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'url': url,
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'entity': attribute.name})
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else:
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infobox_attributes.append({'label': attribute.get_label(language),
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'value': value,
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'entity': attribute.name})
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if infobox_id:
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infobox_id = replace_http_by_https(infobox_id)
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# add the wikidata URL at the end
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infobox_urls.append({'title': 'Wikidata', 'url': attribute_result['item']})
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if img_src is None and len(infobox_attributes) == 0 and len(infobox_urls) == 1 and\
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len(infobox_content) == 0:
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results.append({
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'url': infobox_urls[0]['url'],
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'title': infobox_title,
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'content': infobox_content
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})
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else:
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results.append({
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'infobox': infobox_title,
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'id': infobox_id,
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'content': infobox_content,
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'img_src': img_src,
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'urls': infobox_urls,
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'attributes': infobox_attributes
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})
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return results
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def get_query(query, language):
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attributes = get_attributes(language)
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select = [a.get_select() for a in attributes]
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where = list(filter(lambda s: len(s) > 0, [a.get_where() for a in attributes]))
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wikibase_label = list(filter(lambda s: len(s) > 0, [a.get_wikibase_label() for a in attributes]))
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group_by = list(filter(lambda s: len(s) > 0, [a.get_group_by() for a in attributes]))
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query = QUERY_TEMPLATE\
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.replace('%QUERY%', sparql_string_escape(query))\
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.replace('%SELECT%', ' '.join(select))\
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.replace('%WHERE%', '\n '.join(where))\
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.replace('%WIKIBASE_LABELS%', '\n '.join(wikibase_label))\
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.replace('%GROUP_BY%', ' '.join(group_by))\
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.replace('%LANGUAGE%', language)
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return query, attributes
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def get_attributes(language):
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attributes = []
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def add_value(name):
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attributes.append(WDAttribute(name))
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def add_amount(name):
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attributes.append(WDAmountAttribute(name))
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def add_label(name):
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attributes.append(WDLabelAttribute(name))
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def add_url(name, url_id=None, **kwargs):
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attributes.append(WDURLAttribute(name, url_id, kwargs))
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def add_image(name, url_id=None, priority=1):
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attributes.append(WDImageAttribute(name, url_id, priority))
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def add_date(name):
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attributes.append(WDDateAttribute(name))
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# Dates
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for p in ['P571', # inception date
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'P576', # dissolution date
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'P580', # start date
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'P582', # end date
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'P569', # date of birth
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'P570', # date of death
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'P619', # date of spacecraft launch
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'P620']: # date of spacecraft landing
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add_date(p)
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for p in ['P27', # country of citizenship
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'P495', # country of origin
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'P17', # country
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'P159']: # headquarters location
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add_label(p)
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# Places
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for p in ['P36', # capital
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'P35', # head of state
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'P6', # head of government
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'P122', # basic form of government
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'P37']: # official language
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add_label(p)
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add_value('P1082') # population
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add_amount('P2046') # area
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add_amount('P281') # postal code
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add_label('P38') # currency
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add_amount('P2048') # heigth (building)
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# Media
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for p in ['P400', # platform (videogames, computing)
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'P50', # author
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'P170', # creator
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'P57', # director
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'P175', # performer
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'P178', # developer
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'P162', # producer
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'P176', # manufacturer
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'P58', # screenwriter
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'P272', # production company
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'P264', # record label
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'P123', # publisher
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'P449', # original network
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'P750', # distributed by
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'P86']: # composer
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add_label(p)
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add_date('P577') # publication date
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add_label('P136') # genre (music, film, artistic...)
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add_label('P364') # original language
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add_value('P212') # ISBN-13
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add_value('P957') # ISBN-10
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add_label('P275') # copyright license
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add_label('P277') # programming language
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add_value('P348') # version
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add_label('P840') # narrative location
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# Languages
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add_value('P1098') # number of speakers
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add_label('P282') # writing system
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add_label('P1018') # language regulatory body
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add_value('P218') # language code (ISO 639-1)
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# Other
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add_label('P169') # ceo
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add_label('P112') # founded by
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add_label('P1454') # legal form (company, organization)
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add_label('P137') # operator (service, facility, ...)
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add_label('P1029') # crew members (tripulation)
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add_label('P225') # taxon name
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add_value('P274') # chemical formula
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add_label('P1346') # winner (sports, contests, ...)
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add_value('P1120') # number of deaths
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add_value('P498') # currency code (ISO 4217)
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# URL
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add_url('P856', official=True) # official website
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attributes.append(WDArticle(language)) # wikipedia (user language)
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if not language.startswith('en'):
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attributes.append(WDArticle('en')) # wikipedia (english)
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add_url('P1324') # source code repository
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add_url('P1581') # blog
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add_url('P434', url_id='musicbrainz_artist')
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add_url('P435', url_id='musicbrainz_work')
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add_url('P436', url_id='musicbrainz_release_group')
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add_url('P966', url_id='musicbrainz_label')
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add_url('P345', url_id='imdb_id')
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add_url('P2397', url_id='youtube_channel')
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add_url('P1651', url_id='youtube_video')
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add_url('P2002', url_id='twitter_profile')
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add_url('P2013', url_id='facebook_profile')
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add_url('P2003', url_id='instagram_profile')
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# Map
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attributes.append(WDGeoAttribute('P625'))
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# Image
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add_image('P15', priority=1, url_id='wikimedia_image') # route map
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add_image('P242', priority=2, url_id='wikimedia_image') # locator map
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add_image('P154', priority=3, url_id='wikimedia_image') # logo
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add_image('P18', priority=4, url_id='wikimedia_image') # image
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add_image('P41', priority=5, url_id='wikimedia_image') # flag
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add_image('P2716', priority=6, url_id='wikimedia_image') # collage
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add_image('P2910', priority=7, url_id='wikimedia_image') # icon
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return attributes
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class WDAttribute:
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__slots__ = 'name',
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def __init__(self, name):
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self.name = name
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def get_select(self):
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return '(group_concat(distinct ?{name};separator=", ") as ?{name}s)'.replace('{name}', self.name)
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def get_label(self, language):
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return get_label_for_entity(self.name, language)
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def get_where(self):
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return "OPTIONAL { ?item wdt:{name} ?{name} . }".replace('{name}', self.name)
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def get_wikibase_label(self):
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return ""
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def get_group_by(self):
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return ""
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def get_str(self, result, language):
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return result.get(self.name + 's')
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def __repr__(self):
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return '<' + str(type(self).__name__) + ':' + self.name + '>'
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class WDAmountAttribute(WDAttribute):
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def get_select(self):
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return '?{name} ?{name}Unit'.replace('{name}', self.name)
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def get_where(self):
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return """ OPTIONAL { ?item p:{name} ?{name}Node .
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?{name}Node rdf:type wikibase:BestRank ; ps:{name} ?{name} .
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OPTIONAL { ?{name}Node psv:{name}/wikibase:quantityUnit ?{name}Unit. } }""".replace('{name}', self.name)
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def get_group_by(self):
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return self.get_select()
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def get_str(self, result, language):
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value = result.get(self.name)
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unit = result.get(self.name + "Unit")
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if unit is not None:
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unit = unit.replace('http://www.wikidata.org/entity/', '')
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return value + " " + get_label_for_entity(unit, language)
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return value
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class WDArticle(WDAttribute):
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__slots__ = 'language', 'kwargs'
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def __init__(self, language, kwargs=None):
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super().__init__('wikipedia')
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self.language = language
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self.kwargs = kwargs or {}
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def get_label(self, language):
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# language parameter is ignored
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return "Wikipedia ({language})".replace('{language}', self.language)
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def get_select(self):
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return "?article{language} ?articleName{language}".replace('{language}', self.language)
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def get_where(self):
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return """OPTIONAL { ?article{language} schema:about ?item ;
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schema:inLanguage "{language}" ;
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schema:isPartOf <https://{language}.wikipedia.org/> ;
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schema:name ?articleName{language} . }""".replace('{language}', self.language)
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def get_group_by(self):
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return self.get_select()
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def get_str(self, result, language):
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key = 'article{language}'.replace('{language}', self.language)
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return result.get(key)
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class WDLabelAttribute(WDAttribute):
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def get_select(self):
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return '(group_concat(distinct ?{name}Label;separator=", ") as ?{name}Labels)'.replace('{name}', self.name)
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def get_where(self):
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return "OPTIONAL { ?item wdt:{name} ?{name} . }".replace('{name}', self.name)
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def get_wikibase_label(self):
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return "?{name} rdfs:label ?{name}Label .".replace('{name}', self.name)
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def get_str(self, result, language):
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return result.get(self.name + 'Labels')
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class WDURLAttribute(WDAttribute):
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HTTP_WIKIMEDIA_IMAGE = 'http://commons.wikimedia.org/wiki/Special:FilePath/'
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__slots__ = 'url_id', 'kwargs'
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def __init__(self, name, url_id=None, kwargs=None):
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super().__init__(name)
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self.url_id = url_id
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self.kwargs = kwargs
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def get_str(self, result, language):
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value = result.get(self.name + 's')
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if self.url_id and value is not None and value != '':
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value = value.split(',')[0]
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url_id = self.url_id
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if value.startswith(WDURLAttribute.HTTP_WIKIMEDIA_IMAGE):
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value = value[len(WDURLAttribute.HTTP_WIKIMEDIA_IMAGE):]
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url_id = 'wikimedia_image'
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return get_external_url(url_id, value)
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return value
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class WDGeoAttribute(WDAttribute):
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def get_label(self, language):
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return "OpenStreetMap"
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def get_select(self):
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return "?{name}Lat ?{name}Long".replace('{name}', self.name)
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def get_where(self):
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return """OPTIONAL { ?item p:{name}/psv:{name} [
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wikibase:geoLatitude ?{name}Lat ;
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wikibase:geoLongitude ?{name}Long ] }""".replace('{name}', self.name)
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def get_group_by(self):
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return self.get_select()
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def get_str(self, result, language):
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latitude = result.get(self.name + 'Lat')
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longitude = result.get(self.name + 'Long')
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if latitude and longitude:
|
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return latitude + ' ' + longitude
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return None
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def get_geo_url(self, result, osm_zoom=19):
|
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latitude = result.get(self.name + 'Lat')
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longitude = result.get(self.name + 'Long')
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if latitude and longitude:
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return get_earth_coordinates_url(latitude, longitude, osm_zoom)
|
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return None
|
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|
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class WDImageAttribute(WDURLAttribute):
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__slots__ = 'priority',
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def __init__(self, name, url_id=None, priority=100):
|
|
super().__init__(name, url_id)
|
|
self.priority = priority
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class WDDateAttribute(WDAttribute):
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|
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def get_select(self):
|
|
return '?{name} ?{name}timePrecision ?{name}timeZone ?{name}timeCalendar'.replace('{name}', self.name)
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|
|
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def get_where(self):
|
|
# To remove duplicate, add
|
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# FILTER NOT EXISTS { ?item p:{name}/psv:{name}/wikibase:timeValue ?{name}bis FILTER (?{name}bis < ?{name}) }
|
|
# this filter is too slow, so the response function ignore duplicate results
|
|
# (see the seen_entities variable)
|
|
return """OPTIONAL { ?item p:{name}/psv:{name} [
|
|
wikibase:timeValue ?{name} ;
|
|
wikibase:timePrecision ?{name}timePrecision ;
|
|
wikibase:timeTimezone ?{name}timeZone ;
|
|
wikibase:timeCalendarModel ?{name}timeCalendar ] . }
|
|
hint:Prior hint:rangeSafe true;""".replace('{name}', self.name)
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|
|
|
def get_group_by(self):
|
|
return self.get_select()
|
|
|
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def format_8(self, value, locale):
|
|
# precision: less than a year
|
|
return value
|
|
|
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def format_9(self, value, locale):
|
|
year = int(value)
|
|
# precision: year
|
|
if year < 1584:
|
|
if year < 0:
|
|
return str(year - 1)
|
|
return str(year)
|
|
timestamp = isoparse(value)
|
|
return format_date(timestamp, format='yyyy', locale=locale)
|
|
|
|
def format_10(self, value, locale):
|
|
# precision: month
|
|
timestamp = isoparse(value)
|
|
return format_date(timestamp, format='MMMM y', locale=locale)
|
|
|
|
def format_11(self, value, locale):
|
|
# precision: day
|
|
timestamp = isoparse(value)
|
|
return format_date(timestamp, format='full', locale=locale)
|
|
|
|
def format_13(self, value, locale):
|
|
timestamp = isoparse(value)
|
|
# precision: minute
|
|
return get_datetime_format(format, locale=locale) \
|
|
.replace("'", "") \
|
|
.replace('{0}', format_time(timestamp, 'full', tzinfo=None,
|
|
locale=locale)) \
|
|
.replace('{1}', format_date(timestamp, 'short', locale=locale))
|
|
|
|
def format_14(self, value, locale):
|
|
# precision: second.
|
|
return format_datetime(isoparse(value), format='full', locale=locale)
|
|
|
|
DATE_FORMAT = {
|
|
'0': ('format_8', 1000000000),
|
|
'1': ('format_8', 100000000),
|
|
'2': ('format_8', 10000000),
|
|
'3': ('format_8', 1000000),
|
|
'4': ('format_8', 100000),
|
|
'5': ('format_8', 10000),
|
|
'6': ('format_8', 1000),
|
|
'7': ('format_8', 100),
|
|
'8': ('format_8', 10),
|
|
'9': ('format_9', 1), # year
|
|
'10': ('format_10', 1), # month
|
|
'11': ('format_11', 0), # day
|
|
'12': ('format_13', 0), # hour (not supported by babel, display minute)
|
|
'13': ('format_13', 0), # minute
|
|
'14': ('format_14', 0) # second
|
|
}
|
|
|
|
def get_str(self, result, language):
|
|
value = result.get(self.name)
|
|
if value == '' or value is None:
|
|
return None
|
|
precision = result.get(self.name + 'timePrecision')
|
|
date_format = WDDateAttribute.DATE_FORMAT.get(precision)
|
|
if date_format is not None:
|
|
format_method = getattr(self, date_format[0])
|
|
precision = date_format[1]
|
|
try:
|
|
if precision >= 1:
|
|
t = value.split('-')
|
|
if value.startswith('-'):
|
|
value = '-' + t[1]
|
|
else:
|
|
value = t[0]
|
|
return format_method(value, language)
|
|
except Exception:
|
|
return value
|
|
return value
|
|
|
|
|
|
def debug_explain_wikidata_query(query, method='GET'):
|
|
if method == 'GET':
|
|
http_response = get(SPARQL_EXPLAIN_URL + '&' + urlencode({'query': query}), headers=get_headers())
|
|
else:
|
|
http_response = post(SPARQL_EXPLAIN_URL, data={'query': query}, headers=get_headers())
|
|
http_response.raise_for_status()
|
|
return http_response.content
|
|
|
|
|
|
def init(engine_settings=None):
|
|
# WIKIDATA_PROPERTIES : add unit symbols
|
|
WIKIDATA_PROPERTIES.update(WIKIDATA_UNITS)
|
|
|
|
# WIKIDATA_PROPERTIES : add property labels
|
|
wikidata_property_names = []
|
|
for attribute in get_attributes('en'):
|
|
if type(attribute) in (WDAttribute, WDAmountAttribute, WDURLAttribute, WDDateAttribute, WDLabelAttribute):
|
|
if attribute.name not in WIKIDATA_PROPERTIES:
|
|
wikidata_property_names.append("wd:" + attribute.name)
|
|
query = QUERY_PROPERTY_NAMES.replace('%ATTRIBUTES%', " ".join(wikidata_property_names))
|
|
jsonresponse = send_wikidata_query(query)
|
|
for result in jsonresponse.get('results', {}).get('bindings', {}):
|
|
name = result['name']['value']
|
|
lang = result['name']['xml:lang']
|
|
entity_id = result['item']['value'].replace('http://www.wikidata.org/entity/', '')
|
|
WIKIDATA_PROPERTIES[(entity_id, lang)] = name.capitalize()
|