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# SPDX-License-Identifier: AGPL-3.0-or-later
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""".. sidebar:: info
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- :origin:`solr.py <searx/engines/solr.py>`
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- `Solr <https://solr.apache.org>`_
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- `Solr Resources <https://solr.apache.org/resources.html>`_
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- `Install Solr <https://solr.apache.org/guide/installing-solr.html>`_
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Solr_ is a popular search engine based on Lucene, just like Elasticsearch_. But
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instead of searching in indices, you can search in collections.
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Example
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=======
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This is an example configuration for searching in the collection
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``my-collection`` and get the results in ascending order.
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.. code:: yaml
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- name: solr
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engine: solr
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shortcut: slr
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base_url: http://localhost:8983
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collection: my-collection
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sort: asc
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enable_http: true
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"""
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# pylint: disable=global-statement
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from json import loads
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from urllib.parse import urlencode
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from searx.exceptions import SearxEngineAPIException
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base_url = 'http://localhost:8983'
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collection = ''
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rows = 10
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sort = '' # sorting: asc or desc
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field_list = 'name' # list of field names to display on the UI
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default_fields = '' # default field to query
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query_fields = '' # query fields
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_search_url = ''
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paging = True
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def init(_):
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if collection == '':
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raise ValueError('collection cannot be empty')
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global _search_url
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_search_url = base_url + '/solr/' + collection + '/select?{params}'
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def request(query, params):
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query_params = {'q': query, 'rows': rows}
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if field_list != '':
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query_params['fl'] = field_list
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if query_fields != '':
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query_params['qf'] = query_fields
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if default_fields != '':
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query_params['df'] = default_fields
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if sort != '':
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query_params['sort'] = sort
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if 'pageno' in params:
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query_params['start'] = rows * (params['pageno'] - 1)
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params['url'] = _search_url.format(params=urlencode(query_params))
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return params
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def response(resp):
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resp_json = __get_response(resp)
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results = []
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for result in resp_json['response']['docs']:
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r = {key: str(value) for key, value in result.items()}
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if len(r) == 0:
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continue
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r['template'] = 'key-value.html'
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results.append(r)
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return results
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def __get_response(resp):
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try:
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resp_json = loads(resp.text)
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except Exception as e:
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raise SearxEngineAPIException("failed to parse response") from e
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if 'error' in resp_json:
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raise SearxEngineAPIException(resp_json['error']['msg'])
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return resp_json
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