74 lines
2 KiB
PHP
74 lines
2 KiB
PHP
<?php
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/**
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* @author Robin Appelman <icewind@owncloud.com>
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*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Files\Cache;
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use OCP\Files\Cache\IPropagator;
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/**
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* Propagate etags and mtimes within the storage
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*/
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class Propagator implements IPropagator {
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/**
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* @var \OC\Files\Storage\Storage
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*/
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protected $storage;
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/**
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* @param \OC\Files\Storage\Storage $storage
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*/
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public function __construct(\OC\Files\Storage\Storage $storage) {
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$this->storage = $storage;
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}
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/**
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* @param string $internalPath
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* @param int $time
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* @param int $sizeDifference number of bytes the file has grown
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* @return array[] all propagated entries
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*/
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public function propagateChange($internalPath, $time, $sizeDifference = 0) {
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$cache = $this->storage->getCache($internalPath);
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$parentId = $cache->getParentId($internalPath);
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$propagatedEntries = [];
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while ($parentId !== -1) {
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$entry = $cache->get($parentId);
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$propagatedEntries[] = $entry;
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if (!$entry) {
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return $propagatedEntries;
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}
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$mtime = max($time, $entry['mtime']);
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if ($entry['size'] === -1) {
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$newSize = -1;
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} else {
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$newSize = $entry['size'] + $sizeDifference;
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}
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$cache->update($parentId, ['mtime' => $mtime, 'etag' => $this->storage->getETag($entry['path']), 'size' => $newSize]);
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$parentId = $entry['parent'];
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}
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return $propagatedEntries;
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}
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}
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