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add command to repair broken filesystem trees
Signed-off-by: Robin Appelman <robin@icewind.nl>
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<?php | ||
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declare(strict_types=1); | ||
/** | ||
* @copyright Copyright (c) 2021 Robin Appelman <robin@icewind.nl> | ||
* | ||
* @license GNU AGPL version 3 or any later version | ||
* | ||
* This program is free software: you can redistribute it and/or modify | ||
* it under the terms of the GNU Affero General Public License as | ||
* published by the Free Software Foundation, either version 3 of the | ||
* License, or (at your option) any later version. | ||
* | ||
* This program is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
* GNU Affero General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU Affero General Public License | ||
* along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
* | ||
*/ | ||
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namespace OCA\Files\Command; | ||
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use OCP\IDBConnection; | ||
use Symfony\Component\Console\Command\Command; | ||
use Symfony\Component\Console\Input\InputInterface; | ||
use Symfony\Component\Console\Output\OutputInterface; | ||
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class RepairTree extends Command { | ||
public const CHUNK_SIZE = 200; | ||
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/** | ||
* @var IDBConnection | ||
*/ | ||
protected $connection; | ||
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public function __construct(IDBConnection $connection) { | ||
$this->connection = $connection; | ||
parent::__construct(); | ||
} | ||
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protected function configure() { | ||
$this | ||
->setName('files:repair-tree') | ||
->setDescription('Try and repair malformed filesystem tree structures') | ||
->addOption('dry-run'); | ||
} | ||
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public function execute(InputInterface $input, OutputInterface $output): int { | ||
$rows = $this->findBrokenTreeBits(); | ||
$fix = !$input->getOption('dry-run'); | ||
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$output->writeln("Found " . count($rows) . " file entries with an invalid path"); | ||
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if ($fix) { | ||
$this->connection->beginTransaction(); | ||
} | ||
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$query = $this->connection->getQueryBuilder(); | ||
$query->update('filecache') | ||
->set('path', $query->createParameter('path')) | ||
->set('path_hash', $query->func()->md5($query->createParameter('path'))) | ||
->where($query->expr()->eq('fileid', $query->createParameter('fileid'))); | ||
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foreach ($rows as $row) { | ||
$output->writeln("Path of file ${row['fileid']} is ${row['path']} but should be ${row['parent_path']}/${row['name']} based on it's parent", OutputInterface::VERBOSITY_VERBOSE); | ||
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if ($fix) { | ||
$query->setParameters([ | ||
'fileid' => $row['fileid'], | ||
'path' => $row['parent_path'] . '/' . $row['name'], | ||
]); | ||
$query->execute(); | ||
} | ||
} | ||
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if ($fix) { | ||
$this->connection->commit(); | ||
} | ||
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return 0; | ||
} | ||
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function findBrokenTreeBits(): array { | ||
$query = $this->connection->getQueryBuilder(); | ||
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$query->select('f.fileid', 'f.path', 'f.parent', 'f.name') | ||
->selectAlias('p.path', 'parent_path') | ||
->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') | ||
)); | ||
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return $query->execute()->fetchAll(); | ||
} | ||
} |