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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2020, Morris Jobke <hey@morrisjobke.de>
*
* @author Morris Jobke <hey@morrisjobke.de>
*
* @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/>.
*
*/
namespace OC\Files\Mount;
use OC\Files\ObjectStore\AppdataPreviewObjectStoreStorage;
use OCP\Files\Config\IRootMountProvider;
use OCP\Files\Storage\IStorageFactory;
use OCP\IConfig;
use OCP\ILogger;
/**
* Mount provider for object store app data folder for previews
*/
class ObjectStorePreviewCacheMountProvider implements IRootMountProvider {
/** @var ILogger */
private $logger;
/** @var IConfig */
private $config;
public function __construct(ILogger $logger, IConfig $config) {
$this->logger = $logger;
$this->config = $config;
}
public function getRootMounts(IStorageFactory $loader): array {
if (!is_array($this->config->getSystemValue('objectstore_multibucket'))) {
return [];
}
$instanceId = $this->config->getSystemValueString('instanceid', '');
$mountPoints = [];
$directoryRange = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'];
$i = 0;
foreach ($directoryRange as $parent) {
foreach ($directoryRange as $child) {
$mountPoints[] = new MountPoint(
AppdataPreviewObjectStoreStorage::class,
'/appdata_' . $instanceId . '/preview/' . $parent . '/' . $child,
$this->getMultiBucketObjectStore($i),
$loader
);
$i++;
}
}
return $mountPoints;
}
/**
* @return array
*/
protected function getMultiBucketObjectStore(int $number): array {
$config = $this->config->getSystemValue('objectstore_multibucket');
// sanity checks
if (empty($config['class'])) {
$this->logger->error('No class given for objectstore', ['app' => 'files']);
}
if (!isset($config['arguments'])) {
$config['arguments'] = [];
}
/*
* Use any provided bucket argument as prefix
* and add the mapping from parent/child => bucket
*/
if (!isset($config['arguments']['bucket'])) {
$config['arguments']['bucket'] = '';
}
$numBuckets = isset($config['arguments']['num_buckets']) ? $config['arguments']['num_buckets'] : 64;
$config['arguments']['bucket'] .= (string)($number % $numBuckets);
// instantiate object store implementation
$config['arguments']['objectstore'] = new $config['class']($config['arguments']);
$config['arguments']['internal-id'] = $number;
return $config['arguments'];
}
}
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