private function badLockingMethodExplicit(IDatabase $db)
{
$lock = $db->getScopedLockAndFlush('meow', __METHOD__, 1);
$db->begin(__METHOD__);
throw new RunTimeException("Uh oh!");
}
/**
* Acquire a lock for performing link table updates for a page on a DB
*
* @param IDatabase $dbw
* @param integer $pageId
* @param string $why One of (job, atomicity)
* @return ScopedCallback
* @throws RuntimeException
* @since 1.27
*/
public static function acquirePageLock(IDatabase $dbw, $pageId, $why = 'atomicity')
{
$key = "LinksUpdate:{$why}:pageid:{$pageId}";
$scopedLock = $dbw->getScopedLockAndFlush($key, __METHOD__, 15);
if (!$scopedLock) {
throw new RuntimeException("Could not acquire lock '{$key}'.");
}
return $scopedLock;
}
/**
* Acquire a lock for performing link table updates for a page on a DB
*
* @param IDatabase $dbw
* @param integer $pageId
* @return ScopedCallback|null Returns null on failure
* @throws RuntimeException
* @since 1.27
*/
public static function acquirePageLock(IDatabase $dbw, $pageId)
{
$scopedLock = $dbw->getScopedLockAndFlush("LinksUpdate:pageid:{$pageId}", __METHOD__, 15);
if (!$scopedLock) {
throw new RuntimeException("Could not acquire lock on page #{$pageId}.");
}
return $scopedLock;
}