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PhabricatorDestructionEngine.php
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Created
Sun, Apr 13, 21:05

PhabricatorDestructionEngine.php
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<?php
final class PhabricatorDestructionEngine extends Phobject {
private $rootLogID;
public function getViewer() {
return PhabricatorUser::getOmnipotentUser();
}
public function destroyObject(PhabricatorDestructibleInterface $object) {
$log = id(new PhabricatorSystemDestructionLog())
->setEpoch(time())
->setObjectClass(get_class($object));
if ($this->rootLogID) {
$log->setRootLogID($this->rootLogID);
}
$object_phid = $this->getObjectPHID($object);
if ($object_phid) {
$log->setObjectPHID($object_phid);
}
if (method_exists($object, 'getMonogram')) {
try {
$log->setObjectMonogram($object->getMonogram());
} catch (Exception $ex) {
// Ignore.
}
}
$log->save();
if (!$this->rootLogID) {
$this->rootLogID = $log->getID();
}
$object->destroyObjectPermanently($this);
$extensions = PhabricatorDestructionEngineExtension::getAllExtensions();
foreach ($extensions as $key => $extension) {
if (!$extension->canDestroyObject($this, $object)) {
unset($extensions[$key]);
continue;
}
}
foreach ($extensions as $key => $extension) {
$extension->destroyObject($this, $object);
}
if ($object_phid) {
$this->destroyEdges($object_phid);
if ($object instanceof PhabricatorApplicationTransactionInterface) {
$template = $object->getApplicationTransactionTemplate();
$this->destroyTransactions($template, $object_phid);
}
$this->destroyWorkerTasks($object_phid);
$this->destroyNotifications($object_phid);
}
// Nuke any Herald transcripts of the object, because they may contain
// field data.
// TODO: Define an interface so we don't have to do this for transactions
// and other objects with no Herald adapters?
$transcripts = id(new HeraldTranscript())->loadAllWhere(
'objectPHID = %s',
$object_phid);
foreach ($transcripts as $transcript) {
$transcript->destroyObjectPermanently($this);
}
// TODO: Remove stuff from search indexes?
if ($object instanceof PhabricatorFlaggableInterface) {
$flags = id(new PhabricatorFlag())->loadAllWhere(
'objectPHID = %s', $object_phid);
foreach ($flags as $flag) {
$flag->delete();
}
}
$flags = id(new PhabricatorFlag())->loadAllWhere(
'ownerPHID = %s', $object_phid);
foreach ($flags as $flag) {
$flag->delete();
}
if ($object instanceof PhabricatorTokenReceiverInterface) {
$tokens = id(new PhabricatorTokenGiven())->loadAllWhere(
'objectPHID = %s', $object_phid);
foreach ($tokens as $token) {
$token->delete();
}
}
}
private function destroyEdges($src_phid) {
try {
$edges = id(new PhabricatorEdgeQuery())
->withSourcePHIDs(array($src_phid))
->execute();
} catch (Exception $ex) {
// This is (presumably) a "no edges for this PHID type" exception.
return;
}
$editor = new PhabricatorEdgeEditor();
foreach ($edges as $type => $type_edges) {
foreach ($type_edges as $src => $src_edges) {
foreach ($src_edges as $dst => $edge) {
$editor->removeEdge($edge['src'], $edge['type'], $edge['dst']);
}
}
}
$editor->save();
}
private function destroyTransactions(
PhabricatorApplicationTransaction $template,
$object_phid) {
$xactions = $template->loadAllWhere('objectPHID = %s', $object_phid);
foreach ($xactions as $xaction) {
$this->destroyObject($xaction);
}
}
private function destroyWorkerTasks($object_phid) {
$tasks = id(new PhabricatorWorkerActiveTask())->loadAllWhere(
'objectPHID = %s',
$object_phid);
foreach ($tasks as $task) {
$task->archiveTask(
PhabricatorWorkerArchiveTask::RESULT_CANCELLED,
0);
}
}
private function destroyNotifications($object_phid) {
$table = new PhabricatorFeedStoryNotification();
$conn_w = $table->establishConnection('w');
queryfx(
$conn_w,
'DELETE FROM %T WHERE primaryObjectPHID = %s',
$table->getTableName(),
$object_phid);
}
private function destroyAlmanacProperties($object_phid) {}
public function getObjectPHID($object) {
if (!is_object($object)) {
return null;
}
if (!method_exists($object, 'getPHID')) {
return null;
}
try {
return $object->getPHID();
} catch (Exception $ex) {
return null;
}
}
}

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