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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\Files\Command;
use OCP\IDBConnection;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
class RepairTree extends Command {
public const CHUNK_SIZE = 200;
public function __construct(
protected IDBConnection $connection,
) {
parent::__construct();
}
protected function configure(): void {
$this
->setName('files:repair-tree')
->setDescription('Try and repair malformed filesystem tree structures')
->addOption('dry-run');
}
public function execute(InputInterface $input, OutputInterface $output): int {
$rows = $this->findBrokenTreeBits();
$fix = !$input->getOption('dry-run');
$output->writeln("Found " . count($rows) . " file entries with an invalid path");
if ($fix) {
$this->connection->beginTransaction();
}
$query = $this->connection->getQueryBuilder();
$query->update('filecache')
->set('path', $query->createParameter('path'))
->set('path_hash', $query->func()->md5($query->createParameter('path')))
->set('storage', $query->createParameter('storage'))
->where($query->expr()->eq('fileid', $query->createParameter('fileid')));
foreach ($rows as $row) {
$output->writeln("Path of file {$row['fileid']} is {$row['path']} but should be {$row['parent_path']}/{$row['name']} based on its parent", OutputInterface::VERBOSITY_VERBOSE);
if ($fix) {
$fileId = $this->getFileId((int)$row['parent_storage'], $row['parent_path'] . '/' . $row['name']);
if ($fileId > 0) {
$output->writeln("Cache entry has already be recreated with id $fileId, deleting instead");
$this->deleteById((int)$row['fileid']);
} else {
$query->setParameters([
'fileid' => $row['fileid'],
'path' => $row['parent_path'] . '/' . $row['name'],
'storage' => $row['parent_storage'],
]);
$query->execute();
}
}
}
if ($fix) {
$this->connection->commit();
}
return self::SUCCESS;
}
private function getFileId(int $storage, string $path) {
$query = $this->connection->getQueryBuilder();
$query->select('fileid')
->from('filecache')
->where($query->expr()->eq('storage', $query->createNamedParameter($storage)))
->andWhere($query->expr()->eq('path_hash', $query->createNamedParameter(md5($path))));
return $query->execute()->fetch(\PDO::FETCH_COLUMN);
}
private function deleteById(int $fileId): void {
$query = $this->connection->getQueryBuilder();
$query->delete('filecache')
->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId)));
$query->execute();
}
private function findBrokenTreeBits(): array {
$query = $this->connection->getQueryBuilder();
$query->select('f.fileid', 'f.path', 'f.parent', 'f.name')
->selectAlias('p.path', 'parent_path')
->selectAlias('p.storage', 'parent_storage')
->from('filecache', 'f')
->innerJoin('f', 'filecache', 'p', $query->expr()->eq('f.parent', 'p.fileid'))
->where($query->expr()->orX(
$query->expr()->andX(
$query->expr()->neq('p.path_hash', $query->createNamedParameter(md5(''))),
$query->expr()->neq('f.path', $query->func()->concat('p.path', $query->func()->concat($query->createNamedParameter('/'), 'f.name')))
),
$query->expr()->andX(
$query->expr()->eq('p.path_hash', $query->createNamedParameter(md5(''))),
$query->expr()->neq('f.path', 'f.name')
),
$query->expr()->neq('f.storage', 'p.storage')
));
return $query->execute()->fetchAll();
}
}
|
