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[stable22] Don't die with LockedException when removing/restoring multiple files from trash #30391

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Dec 30, 2021
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[stable22] Don't die with LockedException when removing/restoring multiple files from trash #30391

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17 changes: 14 additions & 3 deletions apps/files_trashbin/lib/Trashbin.php
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Original file line number Diff line number Diff line change
Expand Up @@ -968,9 +968,20 @@ private static function getVersionsFromTrash($filename, $timestamp, $user) {
[$storage,] = $view->resolvePath('/');

//force rescan of versions, local storage may not have updated the cache
if (!self::$scannedVersions) {
$storage->getScanner()->scan('files_trashbin/versions');
self::$scannedVersions = true;
$waitstart = time();
while (!self::$scannedVersions) {
try {
$storage->getScanner()->scan('files_trashbin/versions');
self::$scannedVersions = true;
} catch (LockedException $e) {
/* a concurrent remove/restore from trash occurred,
* retry with a maximum wait time of approx. 15 seconds
*/
if (time() - $waitstart > 15) {
throw $e;
}
usleep(50000 + rand(0, 10000));
}
}

$pattern = \OC::$server->getDatabaseConnection()->escapeLikeParameter(basename($filename));
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