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PhabricatorFulltextIndexEngineExtension.php
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Wed, Apr 23, 16:03

PhabricatorFulltextIndexEngineExtension.php
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<?php
final class PhabricatorFulltextIndexEngineExtension
extends PhabricatorIndexEngineExtension {
const EXTENSIONKEY = 'fulltext';
private $configurationVersion;
public function getExtensionName() {
return pht('Fulltext Engine');
}
public function getIndexVersion($object) {
$version = array();
// When "cluster.search" is reconfigured, new indexes which don't have any
// data yet may have been added. We err on the side of caution and assume
// that every document may need to be reindexed.
$version[] = $this->getConfigurationVersion();
if ($object instanceof PhabricatorApplicationTransactionInterface) {
// If this is a normal object with transactions, we only need to
// reindex it if there are new transactions (or comment edits).
$version[] = $this->getTransactionVersion($object);
$version[] = $this->getCommentVersion($object);
}
if (!$version) {
return null;
}
return implode(':', $version);
}
public function shouldIndexObject($object) {
return ($object instanceof PhabricatorFulltextInterface);
}
public function indexObject(
PhabricatorIndexEngine $engine,
$object) {
$engine = $object->newFulltextEngine();
if (!$engine) {
return;
}
$engine->setObject($object);
$engine->buildFulltextIndexes();
}
private function getTransactionVersion($object) {
$xaction = $object->getApplicationTransactionTemplate();
$xaction_row = queryfx_one(
$xaction->establishConnection('r'),
'SELECT id FROM %T WHERE objectPHID = %s
ORDER BY id DESC LIMIT 1',
$xaction->getTableName(),
$object->getPHID());
if (!$xaction_row) {
return 'none';
}
return $xaction_row['id'];
}
private function getCommentVersion($object) {
$xaction = $object->getApplicationTransactionTemplate();
try {
$comment = $xaction->getApplicationTransactionCommentObject();
if (!$comment) {
return 'none';
}
} catch (Exception $ex) {
return 'none';
}
$comment_row = queryfx_one(
$comment->establishConnection('r'),
'SELECT c.id FROM %T x JOIN %T c
ON x.phid = c.transactionPHID
WHERE x.objectPHID = %s
ORDER BY c.id DESC LIMIT 1',
$xaction->getTableName(),
$comment->getTableName(),
$object->getPHID());
if (!$comment_row) {
return 'none';
}
return $comment_row['id'];
}
private function getConfigurationVersion() {
if ($this->configurationVersion === null) {
$this->configurationVersion = $this->newConfigurationVersion();
}
return $this->configurationVersion;
}
private function newConfigurationVersion() {
$raw = array(
'services' => PhabricatorEnv::getEnvConfig('cluster.search'),
);
$json = phutil_json_encode($raw);
return PhabricatorHash::digestForIndex($json);
}
}

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