001/*
002 *  Copyright 2015 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.cms.content.indexing.solr.observation;
017
018import java.util.Map;
019
020import org.apache.avalon.framework.logger.AbstractLogEnabled;
021import org.apache.avalon.framework.service.ServiceException;
022import org.apache.avalon.framework.service.ServiceManager;
023import org.apache.avalon.framework.service.Serviceable;
024
025import org.ametys.cms.ObservationConstants;
026import org.ametys.cms.content.indexing.solr.SolrIndexer;
027import org.ametys.core.observation.Event;
028import org.ametys.core.observation.Observer;
029
030/**
031 * Observer in charge for removing deleted contents from the Solr server.
032 */
033public class UnindexContentObserver extends AbstractLogEnabled implements Observer, Serviceable
034{
035    
036    /** The Solr indexer. */
037    protected SolrIndexer _solrIndexer;
038    
039    @Override
040    public void service(ServiceManager serviceManager) throws ServiceException
041    {
042        _solrIndexer = (SolrIndexer) serviceManager.lookup(SolrIndexer.ROLE);
043    }
044    
045    @Override
046    public boolean supports(Event event)
047    {
048        return event.getId().equals(ObservationConstants.EVENT_CONTENT_DELETED);
049    }
050    
051    @Override
052    public int getPriority(Event event)
053    {
054        return 0;
055    }
056    
057    @Override
058    public void observe(Event event, Map<String, Object> transientVars) throws Exception
059    {
060        String contentId = (String) event.getArguments().get(ObservationConstants.ARGS_CONTENT_ID);
061        
062        if (contentId != null)
063        {
064            _solrIndexer.unindexContent(contentId);
065        }
066    }
067    
068}