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HeraldRuleIndexEngineExtension.php
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Sun, Apr 28, 06:32

HeraldRuleIndexEngineExtension.php
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<?php
final class HeraldRuleIndexEngineExtension
extends PhabricatorIndexEngineExtension {
const EXTENSIONKEY = 'herald.actions';
public function getExtensionName() {
return pht('Herald Actions');
}
public function shouldIndexObject($object) {
if (!($object instanceof HeraldRule)) {
return false;
}
return true;
}
public function indexObject(
PhabricatorIndexEngine $engine,
$object) {
$edge_type = HeraldRuleActionAffectsObjectEdgeType::EDGECONST;
$old_edges = PhabricatorEdgeQuery::loadDestinationPHIDs(
$object->getPHID(),
$edge_type);
$old_edges = array_fuse($old_edges);
$new_edges = $this->getPHIDsAffectedByActions($object);
$new_edges = array_fuse($new_edges);
$add_edges = array_diff_key($new_edges, $old_edges);
$rem_edges = array_diff_key($old_edges, $new_edges);
if (!$add_edges && !$rem_edges) {
return;
}
$editor = new PhabricatorEdgeEditor();
foreach ($add_edges as $phid) {
$editor->addEdge($object->getPHID(), $edge_type, $phid);
}
foreach ($rem_edges as $phid) {
$editor->removeEdge($object->getPHID(), $edge_type, $phid);
}
$editor->save();
}
public function getIndexVersion($object) {
$phids = $this->getPHIDsAffectedByActions($object);
sort($phids);
$phids = implode(':', $phids);
return PhabricatorHash::digestForIndex($phids);
}
private function getPHIDsAffectedByActions(HeraldRule $rule) {
$viewer = $this->getViewer();
$rule = id(new HeraldRuleQuery())
->setViewer($viewer)
->withIDs(array($rule->getID()))
->needConditionsAndActions(true)
->executeOne();
if (!$rule) {
return array();
}
$phids = array();
$actions = HeraldAction::getAllActions();
foreach ($rule->getActions() as $action_record) {
$action = idx($actions, $action_record->getAction());
if (!$action) {
continue;
}
foreach ($action->getPHIDsAffectedByAction($action_record) as $phid) {
$phids[] = $phid;
}
}
$phids = array_fuse($phids);
return array_keys($phids);
}
}

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