Batch Engine

Candlepin will need the ability to schedule long running jobs to sync subscription and product data. The engine itself is generic enough to use for any scheduled job.

Adding a new task

Adding a new task to Pinsetter is quite simple, so simple it can be done in 3 easy steps.

  1. Create a class that implements the Quartz Job interface
  2. Add your fully qualified class name to the tasks configuration entry in /etc/candlepin/candlepin.conf
  3. Define a public static String DEFAULT_SCHEDULE or add a schedule entry to the same config

That’s it. Pinsetter will now execute that job on the defined schedule.

Sample Job

Here is a very simple job that prints when it was run.

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

import java.util.Date;

/**
 * SimpleTask
 */
public class SimpleTask extends KingpinJob {
    
    /** must be in CRON format */
    public static final String DEFAULT_SCHEDULE = "0 * * * * ?";

    @Override
    public void toExecute(final JobExecutionContext ctx)
        throws JobExecutionException {
        System.out.println("simple task ran: " + new Date().toString());
    }
}
Last modified on 24 March 2016