lib/private/Files/External/StorageModifierTrait.php
<?php
/**
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @copyright Copyright (c) 2018, ownCloud GmbH
* @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 OC\Files\External;
use OCP\IUser;
use OCP\Files\Storage;
use OCP\Files\External\IStorageConfig;
use OCP\Files\External\InsufficientDataForMeaningfulAnswerException;
use OCP\Files\StorageNotAvailableException;
/**
* Trait for objects that can modify IStorageConfigs and wrap Storages
*
* When a storage implementation is being prepared for use, the IStorageConfig
* is passed through manipulateStorageConfig() to update any parameters as
* necessary. After the storage implementation has been constructed, it is
* passed through wrapStorage(), potentially replacing the implementation with
* a wrapped storage that changes its behaviour.
*
* Certain configuration options need to be set before the implementation is
* constructed, while others are retrieved directly from the storage
* implementation and so need a wrapper to be modified.
*/
trait StorageModifierTrait {
/**
* Modify a IStorageConfig parameters
*
* @param IStorageConfig $storage
* @param IUser $user User the storage is being used as
* @throws InsufficientDataForMeaningfulAnswerException
* @throws StorageNotAvailableException
*/
public function manipulateStorageConfig(IStorageConfig &$storage, IUser $user = null) {
}
/**
* Wrap a Storage if necessary
*
* @param Storage $storage
* @return Storage
* @throws InsufficientDataForMeaningfulAnswerException
* @throws StorageNotAvailableException
*/
public function wrapStorage(Storage $storage) {
return $storage;
}
}