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d8734b3b93
* `php occ preview:repair` - a preview migration tool that moves existing previews into the new location introduced with #19214 * moves `appdata_INSTANCEID/previews/FILEID` to `appdata_INSTANCEID/previews/0/5/8/4/c/e/5/FILEID` * migration tool can be stopped during migration via `CTRL+C` - it then finishes the current folder (with the previews of one file) and stops gracefully * if a PHP memory limit is set in the `php.ini` then it will stop automatically once it has less than 25 MiB memory left (this is to avoid hard crashes in the middle of a migration) * the tool can be used during operation - possible drawbacks: * there is the chance of a race condition that a new preview is generated in the moment the folder is already migrated away - so the old folder with the newly cached preview is deleted and one cached preview needs to be re-generated * there is the chance of a race condition during access of a preview while it is migrated to the other folder - then no preview can be shown and results in a 404 (as of now this is an accepted risk) Signed-off-by: Morris Jobke <hey@morrisjobke.de>
72 lines
2 KiB
PHP
72 lines
2 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2020, 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\Storage;
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use OC\Files\AppData\AppData;
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use OC\SystemConfig;
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use OCP\Files\IRootFolder;
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use OCP\Files\NotFoundException;
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use OCP\Files\SimpleFS\ISimpleFolder;
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class Root extends AppData {
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public function __construct(IRootFolder $rootFolder, SystemConfig $systemConfig) {
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parent::__construct($rootFolder, $systemConfig, 'preview');
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}
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public function getFolder(string $name): ISimpleFolder {
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$internalFolder = self::getInternalFolder($name);
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try {
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return parent::getFolder($internalFolder);
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} catch (NotFoundException $e) {
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/*
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* The new folder structure is not found.
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* Lets try the old one
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*/
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}
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return parent::getFolder($name);
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}
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public function newFolder(string $name): ISimpleFolder {
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$internalFolder = self::getInternalFolder($name);
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return parent::newFolder($internalFolder);
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}
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/*
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* Do not allow directory listing on this special root
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* since it gets to big and time consuming
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*/
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public function getDirectoryListing(): array {
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return [];
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}
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public static function getInternalFolder(string $name): string {
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return implode('/', str_split(substr(md5($name), 0, 7))) . '/' . $name;
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}
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}
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