/**
* Relock trigger if its lock has expired.
*
* @param key trigger to lock
* @return true when successfully relocked
*/
public boolean relockExpired(TriggerKey key) {
Document existingLock = locksDao.findTriggerLock(key);
if (existingLock != null) {
if (expiryCalculator.isTriggerLockExpired(existingLock)) {
// When a scheduler is defunct then its triggers become expired
// after sometime and can be recovered by other schedulers.
// To check that a trigger is owned by a defunct scheduler we evaluate
// its LOCK_TIME and try to reassign it to this scheduler.
// Relock may not be successful when some other scheduler has done
// it first.
log.info("Trigger {} is expired - re-locking", key);
return locksDao.relock(key, existingLock.getDate(Constants.LOCK_TIME));
} else {
log.info(
"Trigger {} hasn't expired yet. Lock time: {}",
key,
existingLock.getDate(Constants.LOCK_TIME));
}
} else {
log.warn(
"Error retrieving expired lock from the database for trigger {}. Maybe it was deleted",
key);
}
return false;
}
