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from __future__ import absolute_import |
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from elasticsearch import Elasticsearch |
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from simple_forums import models |
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from simple_forums.backends.search import BaseSearch, SearchResultSet |
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class ElasticSearch(BaseSearch): |
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""" Search backend using elasticsearch service """ |
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REQUIRED_SETTINGS = ['host', 'port'] |
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def __init__(self, *args, **kwargs): |
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super(ElasticSearch, self).__init__(*args, **kwargs) |
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host = self.connection_info['host'] |
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port = self.connection_info['port'] |
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self.es = Elasticsearch([{'host': host, 'port': port}]) |
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# get index name or use default of 'forums' |
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self.index = self.connection_settings.get('index', 'forums') |
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def add(self, thread): |
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""" Add the given object to the search index """ |
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assert isinstance(thread, models.Thread), "Can only index threads" |
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data = { |
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'title': thread.title, |
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} |
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self.es.index( |
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index=self.index, |
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doc_type='thread', |
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id=thread.pk, |
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body=data) |
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for message in thread.message_set.all(): |
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data = { |
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'body': message.body, |
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} |
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self.es.index( |
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index=self.index, |
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doc_type='message', |
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id=message.pk, |
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body=data) |
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def remove(self, thread): |
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""" Remove the given object from the search index """ |
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assert isinstance(thread, models.Thread), \ |
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"'thread' is not a thread instance" |
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self.es.delete( |
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index=self.index, |
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doc_type='thread', |
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id=thread.pk) |
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for message in thread.message_set.all(): |
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self.es.delete( |
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index=self.index, |
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doc_type='message', |
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id=thread.pk) |
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def search(self, query_string): |
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""" Search for the given query string """ |
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body = { |
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'query': { |
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'bool': { |
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'should': [ |
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{ |
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'match': { |
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'title': query_string, |
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}, |
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}, |
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{ |
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'match': { |
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'body': query_string, |
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}, |
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}, |
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] |
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} |
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} |
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} |
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search_results = self.es.search( |
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index=self.index, |
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doc_type='message,thread', |
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body=body) |
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hits = search_results.get('hits').get('hits') |
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result_set = SearchResultSet() |
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for hit in hits: |
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id = hit.get('_id') |
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doc_type = hit.get('_type') |
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if doc_type == 'thread': |
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obj = models.Thread.objects.get(id=id) |
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elif doc_type == 'message': |
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obj = models.Message.objects.get(id=id) |
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score = hit.get('_score') |
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result_set.add(obj, score) |
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return result_set |
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def wipe(self): |
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""" Wipe the search index of all data """ |
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if self.es.indices.exists(self.index): |
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self.es.indices.delete(self.index) |
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smalls12 /
django_simple_forums
