/* * JBoss, Home of Professional Open Source * Copyright 2005, JBoss Inc., and individual contributors as indicated * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.jbpm.jms; import javax.jms.Connection; import javax.jms.JMSException; import javax.jms.Message; import javax.jms.MessageProducer; import javax.jms.Session; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.jbpm.JbpmException; import org.jbpm.db.JobSession; import org.jbpm.graph.exe.ProcessInstance; import org.jbpm.graph.exe.Token; import org.jbpm.job.Job; import org.jbpm.job.Timer; import org.jbpm.msg.MessageService; import org.jbpm.scheduler.SchedulerService; public class JmsConnectorService implements MessageService, SchedulerService { private final JmsConnectorServiceFactory serviceFactory; private final Connection connection; private static final String SCHEDULED_DELIVERY_PROP = "JMS_JBOSS_SCHEDULED_DELIVERY"; private static final String GROUP_ID_PROP = "JMSXGroupID"; private static final String GROUP_PREFIX = "jBPMPID"; private static final long serialVersionUID = 2L; private static final Log log = LogFactory.getLog(JmsConnectorService.class); JmsConnectorService(JmsConnectorServiceFactory serviceFactory) throws JMSException { connection = serviceFactory.getConnectionFactory().createConnection(); this.serviceFactory = serviceFactory; } private JobSession getJobSession() { return serviceFactory.getJbpmConfiguration().getCurrentJbpmContext().getJobSession(); } public void send(Job job) { getJobSession().saveJob(job); try { sendMessage(job); } catch (JMSException e) { throw new JbpmException("failed to send job message", e); } } final void sendMessage(Job job) throws JMSException { Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); try { Message message = session.createMessage(); populateMessage(message, job); MessageProducer messageProducer = session.createProducer(serviceFactory.getDestination()); messageProducer.send(message); } finally { // there is no need to close the producers of a closed session session.close(); } } protected void populateMessage(Message message, Job job) throws JMSException { message.setLongProperty("jobId", job.getId()); if (job instanceof Timer) { Timer timer = (Timer) job; if (log.isDebugEnabled()) { log.debug("scheduling " + timer + " to execute at " + timer.getDueDate()); } message.setLongProperty(SCHEDULED_DELIVERY_PROP, timer.getDueDate().getTime()); // raise timer priority message.setJMSPriority(9); } if (job.isExclusive()) { message.setStringProperty(GROUP_ID_PROP, GROUP_PREFIX + job.getProcessInstance().getId()); } } public void createTimer(Timer timer) { send(timer); } public void deleteTimer(Timer timer) { getJobSession().deleteJob(timer); } public void deleteTimersByName(String timerName, Token token) { getJobSession().deleteTimersByName(timerName, token); } public void deleteTimersByProcessInstance(ProcessInstance processInstance) { getJobSession().deleteJobsForProcessInstance(processInstance); } public void close() { try { connection.close(); } catch (JMSException e) { throw new JbpmException("failed to close jms connection", e); } } }