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.plugins.blog.observer;
017
018import java.util.Map;
019
020import org.apache.avalon.framework.service.ServiceException;
021import org.apache.avalon.framework.service.ServiceManager;
022import org.apache.avalon.framework.service.Serviceable;
023
024import org.ametys.core.observation.Event;
025import org.ametys.core.observation.Observer;
026import org.ametys.plugins.blog.BlogCacheManager;
027import org.ametys.web.ObservationConstants;
028
029/**
030 * Observer triggering the blog's cache clearing
031 */
032public class SiteUpdatedBlogObserver implements Observer, Serviceable
033{
034    /** The blog's cache manager */
035    private BlogCacheManager _blogCacheManager;
036    
037    @Override
038    public void service(ServiceManager manager) throws ServiceException
039    {
040        _blogCacheManager = (BlogCacheManager) manager.lookup(BlogCacheManager.ROLE);
041    }
042    
043    @Override
044    public int getPriority(Event event)
045    {
046        // Will be processed after live synchronization observers
047        return MAX_PRIORITY + 3000;
048    }
049    
050    @Override
051    public boolean supports(Event event)
052    {
053        return event.getId().equals(ObservationConstants.EVENT_SITE_UPDATED);
054    }
055
056    public void observe(Event event, Map<String, Object> transientVars) throws Exception
057    {
058        _blogCacheManager.clearCaches();
059    }
060}