CronJob:
The Word “CRON” is derived from Greek which
means “Time” or Schedule, and the word “JOB” means performing some task. So now
the word “CronJob”=Time+Job, which
means performing some job in particular time.
The Concept of
cronjob consists of types which interact with each other to complete the task. They
are
1. CronJob Type
2. Job Type
3. Trigger Type
4.
CronJob
Type: This type
holds the business logic which is to be performed at particular times and
intervals
Job Type: This type consists of logic to
be executed which is defined by JobPerformable.
Trigger Type: This type is used for scheduling when to run
the job. Which uses cron expression[ * *
* * ? *] which indicates [minutes,
hours, day of month, month, day of week, year] to run the job.
If
we want make notifications periodically then we go for CronJob.
Example:
If we want to send notification every day at 5pm then we can make a setup and
perform CronJob.
How to create
a cronjob:
1.
Create the job
2. Write the java class by
extending the Abstractjobperformable
or implementing the jobperformable
interface. Override the perform method.
3. Configure the java class in to
the extension-spring.xml file.
4. Create the CronJob impex file
Register your CronJob into
CronJob type.
Register our CronJob into
Trigger type with schedule.
5. Update your system so that
server automatically runs the CronJob when the time reached.
How to Start a
CronJob:
There are different ways to start a cronjob
which are given below :
1.
Manually start the CronJob using HMC
Goto hmc -> system -> cronjobs
-> select CronJob -> click on "StartCronJobNow".
2.
Automatically running the CronJob
Through Impex file
3.
Using the ant command
ant
runcronjob -d cronjob=“CronJobName “
4.
Using the javacode using the CronJob
services we can run the cronjob.
How to stop a
cronjob:
We
can stop the cronjob by following ways:
1.
Using the abort method in the java code.it is done automatically after
performing the CronJob.
2.
Manually from hmc we can stop the
CronJob.
Below given step by step to create hybris cron job
1. create a class TestCronJob as below
package aaa.work.core.cronjob;
import de.hybris.platform.cronjob.enums.CronJobResult;
import de.hybris.platform.cronjob.enums.CronJobStatus;
import de.hybris.platform.cronjob.model.CronJobModel;
import de.hybris.platform.servicelayer.cronjob.AbstractJobPerformable;
import de.hybris.platform.servicelayer.cronjob.PerformResult;
public class TestCronJob extends AbstractJobPerformable
{
private String exportDir;
public String getExportDir()
{
return exportDir;
}
public void setExportDir(final String exportDir)
{
this.exportDir = exportDir;
}
@Override
public PerformResult perform(final CronJobModel arg0)
{
System.out.println("TestCronJob Job Started");
System.out.println("TestCronJob Job Finished");
return new PerformResult(CronJobResult.SUCCESS, CronJobStatus.FINISHED);
}
}
2. After create TestCronJob.java register this cron job in xml as below
<beanid="testCronJob" class="aaa.work.core.cronjob.TestCronJob" scope="tenant"
parent="abstractJobPerformable">
<property name="exportDir" ref="exportDataBaseDirectory"/>
</bean>
3. Now Run UPDATE Hybris
4. After UPDATE your created Cron job TestCronJob will show in list of cronjob in Hmc where you can schedule .
