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DrydockWorker.php
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Created
Fri, Nov 29, 20:41

DrydockWorker.php
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<?php
abstract class DrydockWorker extends PhabricatorWorker {
protected function getViewer() {
return PhabricatorUser::getOmnipotentUser();
}
protected function loadLease($lease_phid) {
$viewer = $this->getViewer();
$lease = id(new DrydockLeaseQuery())
->setViewer($viewer)
->withPHIDs(array($lease_phid))
->executeOne();
if (!$lease) {
throw new PhabricatorWorkerPermanentFailureException(
pht('No such lease "%s"!', $lease_phid));
}
return $lease;
}
protected function loadResource($resource_phid) {
$viewer = $this->getViewer();
$resource = id(new DrydockResourceQuery())
->setViewer($viewer)
->withPHIDs(array($resource_phid))
->executeOne();
if (!$resource) {
throw new PhabricatorWorkerPermanentFailureException(
pht('No such resource "%s"!', $resource_phid));
}
return $resource;
}
protected function loadOperation($operation_phid) {
$viewer = $this->getViewer();
$operation = id(new DrydockRepositoryOperationQuery())
->setViewer($viewer)
->withPHIDs(array($operation_phid))
->executeOne();
if (!$operation) {
throw new PhabricatorWorkerPermanentFailureException(
pht('No such operation "%s"!', $operation_phid));
}
return $operation;
}
protected function loadCommands($target_phid) {
$viewer = $this->getViewer();
$commands = id(new DrydockCommandQuery())
->setViewer($viewer)
->withTargetPHIDs(array($target_phid))
->withConsumed(false)
->execute();
$commands = msort($commands, 'getID');
return $commands;
}
protected function checkLeaseExpiration(DrydockLease $lease) {
$this->checkObjectExpiration($lease);
}
protected function checkResourceExpiration(DrydockResource $resource) {
$this->checkObjectExpiration($resource);
}
private function checkObjectExpiration($object) {
// Check if the resource or lease has expired. If it has, we're going to
// send it a release command.
// This command is sent from within the update worker so it is handled
// immediately, but doing this generates a log and improves consistency.
$expires = $object->getUntil();
if (!$expires) {
return;
}
$now = PhabricatorTime::getNow();
if ($expires > $now) {
return;
}
$viewer = $this->getViewer();
$drydock_phid = id(new PhabricatorDrydockApplication())->getPHID();
$command = DrydockCommand::initializeNewCommand($viewer)
->setTargetPHID($object->getPHID())
->setAuthorPHID($drydock_phid)
->setCommand(DrydockCommand::COMMAND_RELEASE)
->save();
}
protected function yieldIfExpiringLease(DrydockLease $lease) {
if (!$lease->canReceiveCommands()) {
return;
}
$this->yieldIfExpiring($lease->getUntil());
}
protected function yieldIfExpiringResource(DrydockResource $resource) {
if (!$resource->canReceiveCommands()) {
return;
}
$this->yieldIfExpiring($resource->getUntil());
}
private function yieldIfExpiring($expires) {
if (!$expires) {
return;
}
if (!$this->getTaskDataValue('isExpireTask')) {
return;
}
$now = PhabricatorTime::getNow();
throw new PhabricatorWorkerYieldException($expires - $now);
}
protected function isTemporaryException(Exception $ex) {
if ($ex instanceof PhabricatorWorkerYieldException) {
return true;
}
if ($ex instanceof DrydockSlotLockException) {
return true;
}
if ($ex instanceof PhutilAggregateException) {
$any_temporary = false;
foreach ($ex->getExceptions() as $sub) {
if ($this->isTemporaryException($sub)) {
$any_temporary = true;
break;
}
}
if ($any_temporary) {
return true;
}
}
if ($ex instanceof PhutilProxyException) {
return $this->isTemporaryException($ex->getPreviousException());
}
return false;
}
protected function getYieldDurationFromException(Exception $ex) {
if ($ex instanceof PhabricatorWorkerYieldException) {
return $ex->getDuration();
}
if ($ex instanceof DrydockSlotLockException) {
return 5;
}
return 15;
}
}

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