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.userdirectory.observation;
017
018import java.util.Map;
019import java.util.Optional;
020
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.core.observation.Event;
026import org.ametys.core.observation.Observer;
027import org.ametys.plugins.userdirectory.page.UserDirectoryPageResolver;
028import org.ametys.web.cache.AbstractCacheObserver;
029import org.ametys.web.repository.page.Page;
030
031/**
032 * {@link Observer} when the user directory root is updated
033 * Clear the cache for getting user page
034 */
035public class UserPageCacheObserver extends AbstractCacheObserver implements Serviceable
036{
037    /** The user directory page resolver */
038    protected UserDirectoryPageResolver _userDirectoryPageResolver;
039    
040    @Override
041    public void service(ServiceManager manager) throws ServiceException
042    {
043        _userDirectoryPageResolver = (UserDirectoryPageResolver) manager.lookup(UserDirectoryPageResolver.ROLE);
044    }
045
046    @Override
047    public boolean supports(Event event)
048    {
049        return event.getId().equals(ObservationConstants.EVENT_USER_DIRECTORY_ROOT_CHANGED)  
050                || event.getId().equals(ObservationConstants.EVENT_USER_DIRECTORY_ROOT_DELETED) 
051                || event.getId().equals(ObservationConstants.EVENT_USER_DIRECTORY_ROOT_UPDATED); 
052    }
053
054    public void observe(Event event, Map<String, Object> transientVars) throws Exception
055    {
056        String lang = Optional.ofNullable(_getPage(event))
057                .map(Page::getSitemapName)
058                .orElse(null);
059        
060        _userDirectoryPageResolver.invalidateUserPageCache(lang);
061    }
062    
063    private Page _getPage(Event event)
064    {
065        return (Page) event.getArguments().get(org.ametys.web.ObservationConstants.ARGS_PAGE);
066    }
067}