private function activateLease(DrydockLease $lease)
{
$actual_status = $lease->getStatus();
if ($actual_status != DrydockLeaseStatus::STATUS_ACQUIRED) {
throw new PhabricatorWorkerPermanentFailureException(pht('Trying to activate lease from wrong status ("%s").', $actual_status));
}
$resource = $lease->getResource();
if (!$resource) {
throw new PhabricatorWorkerPermanentFailureException(pht('Trying to activate lease with no resource.'));
}
$resource_status = $resource->getStatus();
if ($resource_status == DrydockResourceStatus::STATUS_PENDING) {
// TODO: This is explicitly a temporary failure -- we are waiting for
// the resource to come up.
throw new Exception(pht('Resource still activating.'));
}
if ($resource_status != DrydockResourceStatus::STATUS_ACTIVE) {
throw new PhabricatorWorkerPermanentFailureException(pht('Trying to activate lease on a dead resource (in status "%s").', $resource_status));
}
// NOTE: We can race resource destruction here. Between the time we
// performed the read above and now, the resource might have closed, so
// we may activate leases on dead resources. At least for now, this seems
// fine: a resource dying right before we activate a lease on it should not
// be distinguisahble from a resource dying right after we activate a lease
// on it. We end up with an active lease on a dead resource either way, and
// can not prevent resources dying from lightning strikes.
$blueprint = $resource->getBlueprint();
$blueprint->activateLease($resource, $lease);
$this->validateActivatedLease($blueprint, $resource, $lease);
}
private function releaseLease(DrydockLease $lease)
{
$lease->openTransaction();
$lease->setStatus(DrydockLeaseStatus::STATUS_RELEASED)->save();
// TODO: Hold slot locks until destruction?
DrydockSlotLock::releaseLocks($lease->getPHID());
$lease->saveTransaction();
PhabricatorWorker::scheduleTask('DrydockLeaseDestroyWorker', array('leasePHID' => $lease->getPHID()), array('objectPHID' => $lease->getPHID()));
$resource = $lease->getResource();
$blueprint = $resource->getBlueprint();
$blueprint->didReleaseLease($resource, $lease);
}
private function destroyLease(DrydockLease $lease)
{
$status = $lease->getStatus();
switch ($status) {
case DrydockLeaseStatus::STATUS_RELEASED:
case DrydockLeaseStatus::STATUS_BROKEN:
break;
default:
throw new PhabricatorWorkerPermanentFailureException(pht('Unable to destroy lease ("%s"), lease has the wrong ' . 'status ("%s").', $lease->getPHID(), $status));
}
$resource = $lease->getResource();
$blueprint = $resource->getBlueprint();
$blueprint->destroyLease($resource, $lease);
$lease->setStatus(DrydockLeaseStatus::STATUS_DESTROYED)->save();
}
/**
* @task destroy
*/
private function destroyLease(DrydockLease $lease)
{
$resource = $lease->getResource();
if ($resource) {
$blueprint = $resource->getBlueprint();
$blueprint->destroyLease($resource, $lease);
}
DrydockSlotLock::releaseLocks($lease->getPHID());
$lease->setStatus(DrydockLeaseStatus::STATUS_DESTROYED)->save();
$lease->logEvent(DrydockLeaseDestroyedLogType::LOGCONST);
$lease->awakenTasks();
}
