/**
* Handler for the LocalFilePurgeThumbnails hook.
* To avoid excess inclusion of cloudfiles.php, a hook handler can be added
* to CommonSettings.php which includes this file and calls this function.
*
* @param $file File
* @param $archiveName string|false
* @return true
*/
function wmfPurgeBackendThumbCache(File $file, $archiveName)
{
global $site, $lang;
// CommonSettings.php
// Get thumbnail dir relative to thumb zone
if ($archiveName !== false) {
$thumbRel = $file->getArchiveThumbRel($archiveName);
// old version
} else {
$thumbRel = $file->getRel();
// current version
}
// Get the container for the thumb zone and delete the objects
$container = wmfGetSwiftThumbContainer($site, $lang, "{$thumbRel}/");
if ($container) {
// sanity
$files = $container->list_objects(0, NULL, "{$thumbRel}/");
foreach ($files as $file) {
try {
$container->delete_object($file);
} catch (NoSuchObjectException $e) {
// probably a race condition
wfDebugLog('swiftThumb', "Could not delete `{$file}`; object does not exist.");
}
}
}
return true;
}
