tasktimerexecutiondbtest.java

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 * 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.taskmgmt.exe;

import java.util.Iterator;
import java.util.List;

import org.jbpm.db.AbstractDbTestCase;
import org.jbpm.graph.def.ActionHandler;
import org.jbpm.graph.def.ProcessDefinition;
import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.graph.exe.ProcessInstance;
import org.jbpm.scheduler.exe.Timer;
import org.jbpm.scheduler.impl.SchedulerThread;

public class TaskTimerExecutionDbTest extends AbstractDbTestCase {

  static int counter = 0;
  
  public static class PlusPlus implements ActionHandler {
    private static final long serialVersionUID = 1L;
    public void execute(ExecutionContext executionContext) throws Exception {
      counter++;
    }
  }
  
  public void setUp() throws Exception {
    super.setUp();
    counter = 0;
  }

  public void testTimerCreation() {
    ProcessDefinition processDefinition = ProcessDefinition.parseXmlString(
      "<process-definition>" +
      "  <start-state>" +
      "    <transition to='a' />" +
      "  </start-state>" +
      "  <task-node name='a'>" +
      "    <task name='clean ceiling'>" +
      "      <timer name='ceiling-timer' duedate='0 seconds'>" +
      "        <action class='org.jbpm.taskmgmt.exe.TaskTimerExecutionDbTest$PlusPlus' />" +
      "      </timer>" +
      "    </task>" +
      "  </task-node>" +
      "</process-definition>"
    );

    processDefinition = saveAndReload(processDefinition);
    
    ProcessInstance processInstance = new ProcessInstance(processDefinition);
    processInstance.signal();
    
    processInstance = saveAndReload(processInstance);

    Iterator timersIter = schedulerSession.findTimersByDueDate(5);
    assertTrue(timersIter.hasNext());
    Timer timer = (Timer) timersIter.next();
    assertEquals("ceiling-timer", timer.getName());
  }

  public void testTimerDeletion() {
    ProcessDefinition processDefinition = ProcessDefinition.parseXmlString(
      "<process-definition>" +
      "  <start-state>" +
      "    <transition to='a' />" +
      "  </start-state>" +
      "  <task-node name='a'>" +
      "    <task name='clean ceiling'>" +
      "      <timer name='ceiling-timer' duedate='0 seconds'>" +
      "        <action class='org.jbpm.taskmgmt.exe.TaskTimerExecutionDbTest$PlusPlus' />" +
      "      </timer>" +
      "    </task>" +
      "    <transition to='b' />" +
      "  </task-node>" +
      "  <state name='b' />" +
      "</process-definition>"
    );

    processDefinition = saveAndReload(processDefinition);
    
    ProcessInstance processInstance = new ProcessInstance(processDefinition);
    processInstance.signal();
    
    jbpmContext.save(processInstance);
    newTransaction();
    
    List taskInstances = taskMgmtSession.findTaskInstancesByToken(processInstance.getRootToken().getId());
    assertEquals(1, taskInstances.size() );
    
    TaskInstance taskInstance = (TaskInstance) taskInstances.get(0);
    taskInstance.end();
    
    jbpmContext.save(taskInstance.getTaskMgmtInstance().getProcessInstance());
    newTransaction();
    
    Iterator timersIter = schedulerSession.findTimersByDueDate(5);
    assertFalse(timersIter.hasNext());
  }

  public void testTimerExecution() {
    ProcessDefinition processDefinition = ProcessDefinition.parseXmlString(
      "<process-definition>" +
      "  <start-state>" +
      "    <transition to='a' />" +
      "  </start-state>" +
      "  <task-node name='a'>" +
      "    <task name='clean ceiling'>" +
      "      <timer name='ceiling-timer' duedate='0 seconds'>" +
      "        <action class='org.jbpm.taskmgmt.exe.TaskTimerExecutionDbTest$PlusPlus' />" +
      "      </timer>" +
      "    </task>" +
      "  </task-node>" +
      "</process-definition>"
    );

    processDefinition = saveAndReload(processDefinition);
    
    ProcessInstance processInstance = new ProcessInstance(processDefinition);
    processInstance.signal();
    
    jbpmContext.save(processInstance);
    
    newTransaction();

    // the timer executor creates its own JbpmSession.
    assertEquals(0, counter);
    new SchedulerThread().executeTimers();
    assertEquals(1, counter);
  }

  public void testTimerExecutionRepeat() {
    ProcessDefinition processDefinition = ProcessDefinition.parseXmlString(
      "<process-definition>" +
      "  <start-state>" +
      "    <transition to='a' />" +
      "  </start-state>" +
      "  <task-node name='a'>" +
      "    <task name='clean ceiling'>" +
      "      <timer name='ceiling-timer' duedate='0 seconds' repeat='10 second'>" +
      "        <action class='org.jbpm.taskmgmt.exe.TaskTimerExecutionDbTest$PlusPlus' />" +
      "      </timer>" +
      "    </task>" +
      "  </task-node>" +
      "</process-definition>"
    );

    processDefinition = saveAndReload(processDefinition);
    
    ProcessInstance processInstance = new ProcessInstance(processDefinition);
    processInstance.signal();
    
    jbpmContext.save(processInstance);
    newTransaction();
    
    // fetch the original duedate
    Iterator timersIter = schedulerSession.findTimersByDueDate(5);
    assertTrue(timersIter.hasNext());
    Timer timer = (Timer) timersIter.next();
    assertFalse(timersIter.hasNext());
    long originalDueDate = timer.getDueDate().getTime();
    
    commitAndCloseSession();

    // the timer executor creates its own JbpmSession.
    assertEquals(0, counter);
    new SchedulerThread().executeTimers();
    assertEquals(1, counter);

    // begin another transaction
    beginSessionTransaction();

    // check if the timer has be re-scheduled because of the repeat.
    timersIter = schedulerSession.findTimersByDueDate(5);
    assertTrue(timersIter.hasNext());
    timer = (Timer) timersIter.next();
    assertFalse(timersIter.hasNext());
    // check that the timer was rescheduled with a duedate 1 second after the original duedate.
    assertEquals(originalDueDate+10000, timer.getDueDate().getTime());
  }
}