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156 lines
4.2 KiB
156 lines
4.2 KiB
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2018, Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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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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