001/*
002 *  Copyright 2023 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.site;
017
018import java.util.List;
019import java.util.Map;
020import java.util.Optional;
021
022import org.apache.avalon.framework.service.ServiceException;
023import org.apache.avalon.framework.service.ServiceManager;
024import org.apache.avalon.framework.service.Serviceable;
025import org.apache.commons.lang3.StringUtils;
026import org.apache.commons.lang3.tuple.Pair;
027
028import org.ametys.core.ObservationConstants;
029import org.ametys.core.observation.AsyncObserver;
030import org.ametys.core.observation.Event;
031import org.ametys.core.user.UserIdentity;
032import org.ametys.runtime.plugin.component.AbstractLogEnabled;
033import org.ametys.runtime.servlet.RuntimeServlet;
034import org.ametys.web.cache.FOCommHelper;
035
036/**
037 * Observer that transmit maintenance mode modifications to the front
038 */
039public class MaintenanceObserver extends AbstractLogEnabled implements AsyncObserver, Serviceable
040{
041    private FOCommHelper _foCommHelper;
042    
043    public void service(ServiceManager manager) throws ServiceException
044    {
045        _foCommHelper = (FOCommHelper) manager.lookup(FOCommHelper.ROLE);
046    }
047    
048    public boolean supports(Event event)
049    {
050        return event.getId().equals(ObservationConstants.EVENT_RUNTIME_MAINTENANCE)
051                && RuntimeServlet.getMaintenanceStatus() != RuntimeServlet.MaintenanceStatus.AUTOMATIC; // Changing to automatic can only happens at startup, and we want to avoid to call the front during startup
052    }
053
054    public int getPriority()
055    {
056        return 0;
057    }
058
059    public void observe(Event event, Map<String, Object> transientVars) throws Exception
060    {
061        List<Pair<String, String>> params = List.of(
062            Pair.of("status", RuntimeServlet.getMaintenanceStatus().toString()),
063            Pair.of("comment", Optional.ofNullable(RuntimeServlet.getMaintenanceStatusForcedInformations()).map(s -> StringUtils.defaultString(s.comment())).orElse("")),
064            Pair.of("initiator", Optional.ofNullable(RuntimeServlet.getMaintenanceStatusForcedInformations()).map(s -> UserIdentity.userIdentityToString(s.initiator())).orElse(""))
065        );
066        
067        _foCommHelper.testWS("/set-maintenance-mode", params);
068    }
069}