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<?php
/**
* @copyright Robin Appelman <robin@icewind.nl>
*
* @author Joas Schilling <coding@schilljs.com>
* @author 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/>.
*
*/
namespace OC\Files\Cache;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
/**
* Handle the mapping between the string and numeric storage ids
*
* Each storage has 2 different ids
* a string id which is generated by the storage backend and reflects the configuration of the storage (e.g. 'smb://user@host/share')
* and a numeric storage id which is referenced in the file cache
*
* A mapping between the two storage ids is stored in the database and accessible through this class
*
* @package OC\Files\Cache
*/
class StorageGlobal {
/** @var IDBConnection */
private $connection;
/** @var array<string, array> */
private $cache = [];
/** @var array<int, array> */
private $numericIdCache = [];
public function __construct(IDBConnection $connection) {
$this->connection = $connection;
}
/**
* @param string[] $storageIds
*/
public function loadForStorageIds(array $storageIds) {
$builder = $this->connection->getQueryBuilder();
$query = $builder->select(['id', 'numeric_id', 'available', 'last_checked'])
->from('storages')
->where($builder->expr()->in('id', $builder->createNamedParameter(array_values($storageIds), IQueryBuilder::PARAM_STR_ARRAY)));
$result = $query->execute();
while ($row = $result->fetch()) {
$this->cache[$row['id']] = $row;
}
$result->closeCursor();
}
/**
* @param string $storageId
* @return array|null
*/
public function getStorageInfo(string $storageId): ?array {
if (!isset($this->cache[$storageId])) {
$builder = $this->connection->getQueryBuilder();
$query = $builder->select(['id', 'numeric_id', 'available', 'last_checked'])
->from('storages')
->where($builder->expr()->eq('id', $builder->createNamedParameter($storageId)));
$result = $query->execute();
$row = $result->fetch();
$result->closeCursor();
if ($row) {
$this->cache[$storageId] = $row;
$this->numericIdCache[(int)$row['numeric_id']] = $row;
}
}
return $this->cache[$storageId] ?? null;
}
/**
* @param int $numericId
* @return array|null
*/
public function getStorageInfoByNumericId(int $numericId): ?array {
if (!isset($this->numericIdCache[$numericId])) {
$builder = $this->connection->getQueryBuilder();
$query = $builder->select(['id', 'numeric_id', 'available', 'last_checked'])
->from('storages')
->where($builder->expr()->eq('numeric_id', $builder->createNamedParameter($numericId)));
$result = $query->execute();
$row = $result->fetch();
$result->closeCursor();
if ($row) {
$this->numericIdCache[$numericId] = $row;
$this->cache[$row['id']] = $row;
}
}
return $this->numericIdCache[$numericId] ?? null;
}
public function clearCache() {
$this->cache = [];
}
}
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