protected function canReclaimResource(DrydockResource $resource)
{
$viewer = $this->getViewer();
// Don't reclaim a resource if it has been updated recently. If two
// leases are fighting, we don't want them to keep reclaming resources
// from one another forever without making progress, so make resources
// immune to reclamation for a little while after they activate or update.
// TODO: It would be nice to use a more narrow time here, like "last
// activation or lease release", but we don't currently store that
// anywhere.
$updated = $resource->getDateModified();
$now = PhabricatorTime::getNow();
$ago = $now - $updated;
if ($ago < phutil_units('3 minutes in seconds')) {
return false;
}
$statuses = array(DrydockLeaseStatus::STATUS_PENDING, DrydockLeaseStatus::STATUS_ACQUIRED, DrydockLeaseStatus::STATUS_ACTIVE, DrydockLeaseStatus::STATUS_RELEASED, DrydockLeaseStatus::STATUS_BROKEN);
// Don't reclaim resources that have any active leases.
$leases = id(new DrydockLeaseQuery())->setViewer($viewer)->withResourcePHIDs(array($resource->getPHID()))->withStatuses($statuses)->setLimit(1)->execute();
if ($leases) {
return false;
}
return true;
}
