Schedule Data format for AutoScale

Question

I've got schedule data from Repeating Service. How can I parse the format as user friendly way? This is the sample schedule format. 0 13 ? * MON * Please let me know how I can get the definition of the schedule format.

Thank you.

            Repeating.Service rService = Repeating.service(client, trigger.getId());
            Repeating repeat = rService.getObjectForRepeating();

            System.out.println("repeat schedule : " + repeat.getSchedule());

Answer 1

The format of the schedule attribute is in Cron Format.

schedule attribute:

The cron-formatted schedule. This is run in the UTC timezone. Required For Create Type: string

The next java script could help you.

/**
* This script retrieves the Repeating trigger policies for a SoftLayer_Scale_Policy, then 
* it gets the schedule attribute and parses the value (Cron format) to human readable format. 
*
* Important manual pages:
* @see http://sldn.softlayer.com/reference/services/SoftLayer_Scale_Policy/getRepeatingTriggers
* @see http://sldn.softlayer.com/reference/datatypes/SoftLayer_Scale_Policy_Trigger_Repeating
*
* @license <http://sldn.softlayer.com/wiki/index.php/License>
* @author SoftLayer Technologies, Inc. <[email protected]>
*/
package SoftLayer_Java_Scripts.Examples;

import com.softlayer.api.*;
import com.softlayer.api.service.scale.Policy;
import com.softlayer.api.service.scale.policy.trigger.Repeating;

import java.util.Date;
import java.util.List;

import org.quartz.CronExpression;

public class GetObjectScalePolicyTriggerRepeating
{
    public static void main( String[] args )
    {
      // Fill with your valid data here.
      String user = "set me";
      String apiKey = "set me";

      long scalePolicyId = 1234;

      ApiClient client = new RestApiClient().withCredentials(user, apiKey);

      Policy.Service service = Policy.service(client, scalePolicyId);

      try
      {
        List<Repeating> result = service.getRepeatingTriggers();
        for(Repeating rep : result) {
          String cronValue = rep.getSchedule();
          System.out.println("Original value: " + cronValue);
          // Fixing format in order to display the schedule. 
          String patch = "* " + cronValue;
          // Using the next library: http://www.quartz-scheduler.org/api/2.2.1/org/quartz/CronExpression.html
          CronExpression cron = new CronExpression(patch);
          // Returns the next date/time after the given date/time which satisfies the cron expression.
          // (i.e. the next time it's going to be triggered)
          System.out.println("Parsed value: " + cron.getNextValidTimeAfter(new Date()));
        }
      }
      catch(Exception e)
      {
        System.out.println("Script failed, review the next message for further details: " + e); 
      }
    }
}

The next links contain information on cron format:

http://www.nncron.ru/help/EN/working/cron-format.htm

http://www.quartz-scheduler.org/api/2.2.1/org/quartz/CronExpression.html