001/*
002 * (C) Copyright 2007-2010 Nuxeo SA (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Florent Guillaume
016 */
017package org.nuxeo.ecm.core.scheduler;
018
019import javax.security.auth.login.LoginContext;
020import javax.security.auth.login.LoginException;
021
022import org.apache.commons.logging.Log;
023import org.apache.commons.logging.LogFactory;
024import org.nuxeo.ecm.core.api.impl.UserPrincipal;
025import org.nuxeo.ecm.core.event.Event;
026import org.nuxeo.ecm.core.event.EventContext;
027import org.nuxeo.ecm.core.event.EventService;
028import org.nuxeo.ecm.core.event.impl.EventContextImpl;
029import org.nuxeo.ecm.core.event.impl.EventImpl;
030import org.nuxeo.runtime.api.Framework;
031import org.nuxeo.runtime.api.login.LoginAs;
032import org.nuxeo.runtime.transaction.TransactionHelper;
033import org.quartz.Job;
034import org.quartz.JobDataMap;
035import org.quartz.JobExecutionContext;
036import org.quartz.JobExecutionException;
037
038/**
039 * A Quartz job whose execution sends a configured event.
040 */
041public class EventJob implements Job {
042
043    private static final Log log = LogFactory.getLog(EventJob.class);
044
045    /**
046     * Job execution to send the configured event.
047     */
048    @Override
049    public void execute(JobExecutionContext context) throws JobExecutionException {
050        JobDataMap dataMap = context.getJobDetail().getJobDataMap();
051
052        // switch to the Nuxeo classloader so that the event listeners
053        // work as usual
054
055        ClassLoader oldCL = Thread.currentThread().getContextClassLoader();
056        ClassLoader nuxeoCL = getClass().getClassLoader();
057        Thread.currentThread().setContextClassLoader(nuxeoCL);
058        try {
059            execute(dataMap);
060        } catch (LoginException e) {
061            String eventId = dataMap.getString("eventId");
062            log.error("Error while processing scheduled event id: " + eventId, e);
063        } finally {
064            Thread.currentThread().setContextClassLoader(oldCL);
065        }
066    }
067
068    @SuppressWarnings("unchecked")
069    protected void execute(JobDataMap dataMap) throws LoginException {
070        String eventId = dataMap.getString("eventId");
071        String eventCategory = dataMap.getString("eventCategory");
072        String username = dataMap.getString("username");
073
074        SchedulerService scheduler = Framework.getLocalService(SchedulerService.class);
075        if (scheduler == null || !scheduler.hasApplicationStarted()) {
076            // too early
077            return;
078        }
079
080        EventService eventService = Framework.getService(EventService.class);
081        if (eventService == null) {
082            log.error("Cannot find EventService");
083            return;
084        }
085
086        LoginContext loginContext = null;
087        try {
088            // login
089            if (username == null) {
090                loginContext = Framework.login();
091            } else {
092                if (Framework.getLocalService(LoginAs.class) != null) {
093                    loginContext = Framework.loginAsUser(username);
094                } else if (!Framework.isTestModeSet()) {
095                    log.error("LoginAs service not available");
096                }
097            }
098
099            // set up event context
100            UserPrincipal principal = new UserPrincipal(username, null, false, false);
101            EventContext eventContext = new EventContextImpl(null, principal);
102            eventContext.setProperty("category", eventCategory);
103            eventContext.setProperties(dataMap);
104            Event event = new EventImpl(eventId, eventContext);
105
106            // start transaction
107            boolean tx = TransactionHelper.startTransaction();
108
109            // send event
110            log.debug("Sending scheduled event id=" + eventId + ", category=" + eventCategory + ", username="
111                    + username);
112            boolean ok = false;
113            try {
114                eventService.fireEvent(event);
115                ok = true;
116            } finally {
117                if (tx) {
118                    if (!ok) {
119                        TransactionHelper.setTransactionRollbackOnly();
120                    }
121                    TransactionHelper.commitOrRollbackTransaction();
122                }
123            }
124        } finally {
125            // logout
126            if (loginContext != null) {
127                loginContext.logout();
128            }
129        }
130    }
131
132}