/**
* try to acquire a lock on a cron job
*
* set a job to 'running' only if it is currently 'pending'
*
* @param Entity\Cronjob $job
* @return bool
*/
public function tryLockJob(Entity\Cronjob $job)
{
$em = $this->getEm();
$repo = $em->getRepository('PlaygroundCore\\Entity\\Cronjob');
if ($job->getStatus() === Mapper\Cronjob::STATUS_PENDING) {
$job->setStatus(Mapper\Cronjob::STATUS_RUNNING);
$em->persist($job);
$em->flush();
// flush() succeeded if reached here;
// otherwise an Exception would have been thrown
return true;
}
return false;
}
