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<?php |
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declare(strict_types=1); |
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/** |
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* @copyright Copyright (c) 2018, Roeland Jago Douma <[email protected]> |
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* |
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* @author Roeland Jago Douma <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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namespace OC\Preview; |
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use OC\BackgroundJob\TimedJob; |
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use OC\Preview\Storage\Root; |
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use OCP\DB\QueryBuilder\IQueryBuilder; |
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use OCP\Files\IMimeTypeLoader; |
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use OCP\Files\NotFoundException; |
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use OCP\Files\NotPermittedException; |
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use OCP\IDBConnection; |
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class BackgroundCleanupJob extends TimedJob { |
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/** @var IDBConnection */ |
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private $connection; |
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/** @var Root */ |
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private $previewFolder; |
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/** @var bool */ |
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private $isCLI; |
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/** @var IMimeTypeLoader */ |
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private $mimeTypeLoader; |
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public function __construct(IDBConnection $connection, |
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Root $previewFolder, |
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IMimeTypeLoader $mimeTypeLoader, |
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bool $isCLI) { |
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// Run at most once an hour |
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$this->setInterval(3600); |
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$this->connection = $connection; |
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$this->previewFolder = $previewFolder; |
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$this->isCLI = $isCLI; |
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$this->mimeTypeLoader = $mimeTypeLoader; |
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} |
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public function run($argument) { |
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foreach ($this->getDeletedFiles() as $fileId) { |
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try { |
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$preview = $this->previewFolder->getFolder((string)$fileId); |
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$preview->delete(); |
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} catch (NotFoundException $e) { |
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// continue |
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} catch (NotPermittedException $e) { |
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// continue |
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} |
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} |
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} |
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private function getDeletedFiles(): \Iterator { |
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yield from $this->getOldPreviewLocations(); |
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yield from $this->getNewPreviewLocations(); |
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} |
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private function getOldPreviewLocations(): \Iterator { |
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$qb = $this->connection->getQueryBuilder(); |
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$qb->select('a.name') |
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->from('filecache', 'a') |
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->leftJoin('a', 'filecache', 'b', $qb->expr()->eq( |
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$qb->expr()->castColumn('a.name', IQueryBuilder::PARAM_INT), 'b.fileid' |
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)) |
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->where( |
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$qb->expr()->isNull('b.fileid') |
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)->andWhere( |
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$qb->expr()->eq('a.parent', $qb->createNamedParameter($this->previewFolder->getId())) |
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)->andWhere( |
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$qb->expr()->like('a.name', $qb->createNamedParameter('__%')) |
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); |
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if (!$this->isCLI) { |
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$qb->setMaxResults(10); |
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} |
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$cursor = $qb->execute(); |
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while ($row = $cursor->fetch()) { |
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yield $row['name']; |
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} |
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$cursor->closeCursor(); |
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} |
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private function getNewPreviewLocations(): \Iterator { |
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$qb = $this->connection->getQueryBuilder(); |
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$qb->select('path', 'mimetype') |
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->from('filecache') |
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->where($qb->expr()->eq('fileid', $qb->createNamedParameter($this->previewFolder->getId()))); |
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$cursor = $qb->execute(); |
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$data = $cursor->fetch(); |
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$cursor->closeCursor(); |
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if ($data === null) { |
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return []; |
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} |
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/* |
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* This lovely like is the result of the way the new previews are stored |
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* We take the md5 of the name (fileid) and split the first 7 chars. That way |
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* there are not a gazillion files in the root of the preview appdata. |
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*/ |
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$like = $this->connection->escapeLikeParameter($data['path']) . '/_/_/_/_/_/_/_/%'; |
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$qb = $this->connection->getQueryBuilder(); |
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$qb->select('a.name') |
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->from('filecache', 'a') |
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->leftJoin('a', 'filecache', 'b', $qb->expr()->eq( |
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$qb->expr()->castColumn('a.name', IQueryBuilder::PARAM_INT), 'b.fileid' |
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)) |
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->where( |
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$qb->expr()->andX( |
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$qb->expr()->isNull('b.fileid'), |
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$qb->expr()->like('a.path', $qb->createNamedParameter($like)), |
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$qb->expr()->eq('a.mimetype', $qb->createNamedParameter($this->mimeTypeLoader->getId('httpd/unix-directory'))) |
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) |
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); |
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if (!$this->isCLI) { |
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$qb->setMaxResults(10); |
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} |
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$cursor = $qb->execute(); |
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while ($row = $cursor->fetch()) { |
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yield $row['name']; |
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} |
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$cursor->closeCursor(); |
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} |
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} |
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nextcloud /
server
