001/*
002 *  Copyright 2020 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.ugc.observation;
017
018import javax.jcr.Session;
019
020import org.ametys.core.observation.Event;
021import org.ametys.core.observation.Observer;
022import org.ametys.web.cache.AbstractSiteCacheObserver;
023import org.ametys.web.repository.page.Page;
024import org.ametys.web.repository.site.Site;
025
026/**
027 * {@link Observer} for observing page creation or modification in order to
028 * invalidate cache on front-office.
029 */
030public class InvalidateCacheOnContentPageModificationObserver extends AbstractSiteCacheObserver
031{
032    @Override
033    public boolean supports(Event event)
034    {
035        return event.getId().equals(ObservationConstants.EVENT_UGC_ROOT_UPDATED);
036    }
037    
038    @Override
039    protected Site _getSite(Event event)
040    {
041        return _getPage(event).getSite();
042    }
043    
044    private Page _getPage(Event event)
045    {
046        return (Page) event.getArguments().get(org.ametys.web.ObservationConstants.ARGS_PAGE);
047    }
048    
049    @Override
050    protected void _internalObserve(Event event, Site site, Session liveSession) throws Exception
051    {
052        Page page = _getPage(event);
053        _cachePolicy.invalidateCacheOnPageModification(page);
054    }
055}