001/*
002 * (C) Copyright 2007-2016 Nuxeo SA (http://nuxeo.com/) and others.
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 *
016 */
017
018package org.nuxeo.ecm.core.scheduler;
019
020import java.io.IOException;
021import java.util.Optional;
022
023import org.apache.commons.logging.LogFactory;
024import org.nuxeo.runtime.api.Framework;
025import org.nuxeo.runtime.reload.ReloadEventNames;
026import org.nuxeo.runtime.services.event.Event;
027import org.nuxeo.runtime.services.event.EventListener;
028import org.quartz.SchedulerException;
029
030public class ReloadListener implements EventListener {
031
032    @Override
033    public void handleEvent(Event event) {
034        if (ReloadEventNames.BEFORE_RELOAD_EVENT_ID.equals(event.getId())) {
035            lookup().ifPresent(SchedulerServiceImpl::shutdownScheduler);
036        } else if (ReloadEventNames.AFTER_RELOAD_EVENT_ID.equals(event.getId())) {
037            lookup().ifPresent(scheduler -> {
038                try {
039                    scheduler.setupScheduler();
040                } catch (IOException | SchedulerException cause) {
041                    LogFactory.getLog(ReloadListener.class).error("Cannot reload scheduler", cause);
042                }
043            });
044        }
045    }
046
047    Optional<SchedulerServiceImpl> lookup() {
048        SchedulerService scheduler = Framework.getService(SchedulerService.class);
049        if (scheduler instanceof SchedulerServiceImpl) {
050            return Optional.of((SchedulerServiceImpl) scheduler);
051        }
052        return Optional.empty();
053    }
054
055}