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<?php
/**
* @author Robin Appelman <icewind@owncloud.com>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @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\Cache;
/**
* Propagate etags and mtimes within the storage
*/
class Propagator {
/**
* @var \OC\Files\Storage\Storage
*/
protected $storage;
/**
* @param \OC\Files\Storage\Storage $storage
*/
public function __construct(\OC\Files\Storage\Storage $storage) {
$this->storage = $storage;
}
/**
* @param string $internalPath
* @param int $time
* @return array[] all propagated entries
*/
public function propagateChange($internalPath, $time) {
$cache = $this->storage->getCache($internalPath);
$parentId = $cache->getParentId($internalPath);
$propagatedEntries = [];
while ($parentId !== -1) {
$entry = $cache->get($parentId);
$propagatedEntries[] = $entry;
if (!$entry) {
return $propagatedEntries;
}
$mtime = max($time, $entry['mtime']);
$cache->update($parentId, ['mtime' => $mtime, 'etag' => $this->storage->getETag($entry['path'])]);
$parentId = $entry['parent'];
}
return $propagatedEntries;
}
}
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