/**
* This Source Code Form is subject to the terms of the Mozilla Public License,
* v. 2.0. If a copy of the MPL was not distributed with this file, You can
* obtain one at http://mozilla.org/MPL/2.0/. OpenMRS is also distributed under
* the terms of the Healthcare Disclaimer located at http://openmrs.org/license.
*
* Copyright (C) OpenMRS Inc. OpenMRS is a registered trademark and the OpenMRS
* graphic logo is a trademark of OpenMRS Inc.
*/
package org.openmrs.scheduler.timer;
import java.util.Date;
import java.util.TimerTask;
import org.openmrs.api.context.Context;
import org.openmrs.api.context.Daemon;
import org.openmrs.scheduler.SchedulerService;
import org.openmrs.scheduler.SchedulerUtil;
import org.openmrs.scheduler.Task;
import org.openmrs.scheduler.TaskDefinition;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TimerSchedulerTask extends TimerTask {
/** The task that will be executed by the JDK timer. */
private Task task;
/** Logger */
private static Logger log = LoggerFactory.getLogger(TimerSchedulerTask.class);
/** * Public constructor */
public TimerSchedulerTask(Task task) {
this.task = task;
}
/**
* * Executes the action to be performed by this timer task.
*
* @see java.util.TimerTask#run()
*/
@Override
public void run() {
try {
Daemon.executeScheduledTask(task);
}
catch (Exception t) {
// Fix #862: IllegalStateException: Timer already cancelled.
// Suppress error in order to keep the scheduler's Timer from completely failing.
log.error(
"FATAL ERROR: Task [" + task.getClass() + "] failed due to exception [" + t.getClass().getName() + "]", t);
SchedulerUtil.sendSchedulerError(t);
}
}
/**
* Save the last execution time in the TaskDefinition
*/
private static void saveLastExecutionTime(Task task) {
TaskDefinition taskDefinition = null;
try {
// We re-get the task definition in case the copy set during the
// task initialization has become stale. NOTE: If a task does not
// extend the abstract class AbstractTask, then it's possible the
// developer did not actually set the TaskDefintion on the Task.
// Therefore we might get an NPE below.
if (task.getTaskDefinition() != null) {
SchedulerService schedulerService = Context.getSchedulerService();
taskDefinition = task.getTaskDefinition();
taskDefinition.setLastExecutionTime(new Date());
schedulerService.saveTaskDefinition(taskDefinition);
} else {
log.warn("Unable to save the last execution time for task. Task.taskDefinition is null in "
+ task.getClass());
}
}
catch (Exception e) {
log.warn("Unable to save the last execution time for task ", e);
}
}
/**
* Shutdown the timer task and invoke the task's shutdown() callback method.
*/
public void shutdown() {
super.cancel();
task.shutdown();
}
/**
* Executes the given task.
*/
public static void execute(Task task) {
task.execute();
saveLastExecutionTime(task);
}
}