/**
 * JobSchedulerActivator.java
 * Created on Jun 9, 2008
 * (C) Copyright TANDBERG Television Ltd.
 */
package com.tandbergtv.watchpoint.pmm.job.scheduling;

import org.apache.log4j.Logger;

import com.tandbergtv.workflow.core.service.Service;
import com.tandbergtv.workflow.core.service.ServiceRegistry;

/**
 * This class is responsible for starting and stopping the job scheduling service
 * 
 * @author spuranik
 */
public class JobSchedulerActivator {

	private static final Logger logger = Logger.getLogger(JobSchedulerActivator.class);
	
	/**
	 * this method starts the job scheduling engine
	 */
	public void start() {
		try {
			IJobScheduleManager quartzScheduleMgr = QuartzScheduleManager.getInstance();

			ServiceRegistry.getDefault().register(quartzScheduleMgr.getServiceName(),
					quartzScheduleMgr);
			quartzScheduleMgr.start();

			logger.debug("Starting job scheduling service.");
		} catch (RuntimeException e) {
			logger.error("Error while starting JobScheduler service: " + e.toString());
		}
	}

	/**
	 * this method stops the job scheduling service
	 */
	public void stop() {
		try {
			logger.debug("Stopping job scheduling service.");
			ServiceRegistry registry = ServiceRegistry.getDefault();
			Service service = registry.lookup(IJobScheduleManager.class);

			if (service != null) {
				service.stop();
				registry.unregister(service);
			}
		} catch (RuntimeException e) {
			logger.error("Error while stopping JobScheduler service: " + e.toString());
		}
	}

}