nextcloud/lib/public/Files/Storage/ILockingStorage.php

62 lines
2.2 KiB
PHP

<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Robin Appelman <robin@icewind.nl>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCP\Files\Storage;
use OCP\Lock\ILockingProvider;
/**
* Storage backends that require explicit locking
*
* Storage backends implementing this interface do not need to implement their own locking implementation but should use the provided lockingprovider instead
* The implementation of the locking methods only need to map internal storage paths to "lock keys"
*
* @since 9.0.0
*/
interface ILockingStorage {
/**
* @param string $path The path of the file to acquire the lock for
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @param \OCP\Lock\ILockingProvider $provider
* @throws \OCP\Lock\LockedException
* @since 9.0.0
*/
public function acquireLock($path, $type, ILockingProvider $provider);
/**
* @param string $path The path of the file to acquire the lock for
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @param \OCP\Lock\ILockingProvider $provider
* @since 9.0.0
*/
public function releaseLock($path, $type, ILockingProvider $provider);
/**
* @param string $path The path of the file to change the lock for
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @param \OCP\Lock\ILockingProvider $provider
* @throws \OCP\Lock\LockedException
* @since 9.0.0
*/
public function changeLock($path, $type, ILockingProvider $provider);
}