100 lines
2.1 KiB
PHP
100 lines
2.1 KiB
PHP
<?php
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/**
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* Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Files\Cache;
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/**
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* Propagates changes in etag and mtime up the filesystem tree
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*
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* @package OC\Files\Cache
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*/
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class ChangePropagator {
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/**
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* @var string[]
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*/
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protected $changedFiles = array();
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/**
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* @var \OC\Files\View
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*/
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protected $view;
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/**
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* @param \OC\Files\View $view
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*/
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public function __construct(\OC\Files\View $view) {
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$this->view = $view;
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}
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public function addChange($path) {
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$this->changedFiles[] = $path;
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}
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public function getChanges() {
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return $this->changedFiles;
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}
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/**
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* propagate the registered changes to their parent folders
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*
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* @param int $time (optional) the mtime to set for the folders, if not set the current time is used
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*/
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public function propagateChanges($time = null) {
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$parents = $this->getAllParents();
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$this->changedFiles = array();
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if (!$time) {
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$time = time();
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}
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foreach ($parents as $parent) {
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/**
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* @var \OC\Files\Storage\Storage $storage
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* @var string $internalPath
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*/
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list($storage, $internalPath) = $this->view->resolvePath($parent);
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if ($storage) {
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$cache = $storage->getCache();
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$entry = $cache->get($internalPath);
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$cache->update($entry['fileid'], array('mtime' => max($time, $entry['mtime']), 'etag' => $storage->getETag($internalPath)));
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}
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}
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}
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/**
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* @return string[]
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*/
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public function getAllParents() {
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$parents = array();
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foreach ($this->getChanges() as $path) {
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$parents = array_values(array_unique(array_merge($parents, $this->getParents($path))));
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}
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return $parents;
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}
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/**
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* get all parent folders of $path
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*
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* @param string $path
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* @return string[]
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*/
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protected function getParents($path) {
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$parts = explode('/', $path);
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// remove the singe file
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array_pop($parts);
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$result = array('/');
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$resultPath = '';
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foreach ($parts as $part) {
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if ($part) {
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$resultPath .= '/' . $part;
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$result[] = $resultPath;
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}
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}
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return $result;
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}
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}
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