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 boolean aboutToHandleEvent(Event event) {
034        return true;
035    }
036
037    @Override
038    public void handleEvent(Event event) {
039        if (event.getId() == ReloadEventNames.BEFORE_RELOAD_EVENT_ID) {
040            lookup().ifPresent(scheduler -> scheduler.shutdownScheduler());
041        } else if (event.getId() == ReloadEventNames.AFTER_RELOAD_EVENT_ID) {
042            lookup().ifPresent(scheduler -> {
043                try {
044                    scheduler.setupScheduler();
045                } catch (IOException | SchedulerException cause) {
046                    LogFactory.getLog(ReloadListener.class).error("Cannot reload scheduler", cause);
047                }
048            });
049        }
050    }
051
052    Optional<SchedulerServiceImpl> lookup() {
053        SchedulerService scheduler = Framework.getService(SchedulerService.class);
054        if (scheduler instanceof SchedulerServiceImpl) {
055            return Optional.of((SchedulerServiceImpl) scheduler);
056        }
057        return Optional.empty();
058    }
059
060}