001/*
002 *  Copyright 2010 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.web.cache;
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.runtime.plugin.component.AbstractLogEnabled;
027import org.ametys.web.ObservationConstants;
028
029/**
030 * Reset the site cache on front office instances.
031 */
032public class InvalidateSiteCacheObserver extends AbstractLogEnabled implements Observer, Serviceable
033{
034    private FOCommHelper _foCommHelper;
035
036    public void service(ServiceManager manager) throws ServiceException
037    {
038        _foCommHelper = (FOCommHelper) manager.lookup(FOCommHelper.ROLE);
039    }
040    
041    public int getPriority()
042    {
043        // Will be processed after Solr update
044        return Observer.MAX_PRIORITY + 4000;
045    }
046    
047    public boolean supports(Event event)
048    {
049        return event.getId().equals(ObservationConstants.EVENT_SITE_ADDED) || event.getId().equals(ObservationConstants.EVENT_SITE_DELETED)
050            || event.getId().equals(ObservationConstants.EVENT_SITE_UPDATED);
051    }
052    
053    public void observe(Event event, Map<String, Object> transientVars) throws Exception
054    {
055        try
056        {
057            _foCommHelper.testWS("/_resetCache");
058        }
059        catch (Exception e)
060        {
061            getLogger().error("Unable to invalidate site cache", e);
062        }
063    }
064}