Re: [ovirt-devel] Certain questions about Quartz based scheduling in oVirt

Hi Shubhendu, ----- Original Message ----- > From: "Shubhendu Tripathi" <shtripat(a)redhat.com&gt; > To: devel(a)ovirt.org > Sent: Monday, November 24, 2014 8:58:34 AM > Subject: [ovirt-devel] Certain questions about Quartz based scheduling in oVirt > > Hi All, > > We are in a requirement where we need to schedule jobs at certain time > interval, hourly, daily, weekly and monthly (i.e. repetitive and cron > kind of scheduling). > I was trying to understand quartz based scheduling mechanism in oVirt to > achieve the scenarios. > > Have some basic questions regarding the same - > 1. Is there is mechanism to persist the scheduling data in oVirt ? In ovirt we do not persist the jobs. The application reschedule the jobs when it starts and programmatically triggers jobs when required. On packaging/services/ovirt-engine/ovirt-engine.xml.in we specify the job store configuration as RAMJobStore, which is a volatile: <property name="org.quartz.jobStore.class" value="org.quartz.simpl.RAMJobStore"/> You may select other implementation. See: http://quartz-scheduler.org/api/2.2.0/org/quartz/spi/JobStore.html

> 2. How to tackle edit and rescheduling of jobs ? > You can have a look at org.ovirt.engine.core.utils.timer.SchedulerUtil interface in the 'scheduler' project which provides that functionality, and the related classes. But if not special requirements, i guess the shipped quartz implementation should be enough: http://quartz-scheduler.org/documentation/quartz-2.x/tutorials/tutorial-l... > Kindly guide on how to achieve these. > > Thanks and Regards, > Shubhendu > _______________________________________________ > Devel mailing list > Devel(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/devel > _______________________________________________ Devel mailing list Devel(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/devel