105 lines
3.1 KiB
PHP
105 lines
3.1 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 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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use \OC\Files\Mount;
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use \OC\Files\Filesystem;
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class BackgroundWatcher {
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static $folderMimetype = null;
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static private function getFolderMimetype() {
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if (!is_null(self::$folderMimetype)) {
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return self::$folderMimetype;
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}
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$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*mimetypes` WHERE `mimetype` = ?');
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$result = $query->execute(array('httpd/unix-directory'));
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$row = $result->fetchRow();
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return $row['id'];
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}
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static private function checkUpdate($id) {
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$cacheItem = Cache::getById($id);
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if (is_null($cacheItem)) {
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return;
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}
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list($storageId, $internalPath) = $cacheItem;
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$mounts = Mount::findByStorageId($storageId);
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if (count($mounts) === 0) {
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//if the storage we need isn't mounted on default, try to find a user that has access to the storage
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$permissionsCache = new Permissions($storageId);
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$users = $permissionsCache->getUsers($id);
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if (count($users) === 0) {
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return;
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}
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Filesystem::initMountPoints($users[0]);
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$mounts = Mount::findByStorageId($storageId);
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if (count($mounts) === 0) {
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return;
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}
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}
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$storage = $mounts[0]->getStorage();
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$watcher = new Watcher($storage);
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$watcher->checkUpdate($internalPath);
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}
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/**
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* get the next fileid in the cache
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*
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* @param int $previous
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* @param bool $folder
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* @return int
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*/
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static private function getNextFileId($previous, $folder) {
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if ($folder) {
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$query = \OC_DB::prepare('SELECT `fileid` FROM `*PREFIX*filecache` WHERE `fileid` > ? AND mimetype = ' . self::getFolderMimetype() . ' ORDER BY `fileid` ASC', 1);
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} else {
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$query = \OC_DB::prepare('SELECT `fileid` FROM `*PREFIX*filecache` WHERE `fileid` > ? AND mimetype != ' . self::getFolderMimetype() . ' ORDER BY `fileid` ASC', 1);
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}
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$result = $query->execute(array($previous));
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if ($row = $result->fetchRow()) {
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return $row['fileid'];
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} else {
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return 0;
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}
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}
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static public function checkNext() {
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// check both 1 file and 1 folder, this way new files are detected quicker because there are less folders than files usually
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$previousFile = \OC_Appconfig::getValue('files', 'backgroundwatcher_previous_file', 0);
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$previousFolder = \OC_Appconfig::getValue('files', 'backgroundwatcher_previous_folder', 0);
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$nextFile = self::getNextFileId($previousFile, false);
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$nextFolder = self::getNextFileId($previousFolder, true);
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\OC_Appconfig::setValue('files', 'backgroundwatcher_previous_file', $nextFile);
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\OC_Appconfig::setValue('files', 'backgroundwatcher_previous_folder', $nextFolder);
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if ($nextFile > 0) {
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self::checkUpdate($nextFile);
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}
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if ($nextFolder > 0) {
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self::checkUpdate($nextFolder);
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}
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}
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static public function checkAll() {
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$previous = 0;
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$next = 1;
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while ($next != 0) {
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$next = self::getNextFileId($previous, true);
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self::checkUpdate($next);
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}
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$previous = 0;
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$next = 1;
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while ($next != 0) {
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$next = self::getNextFileId($previous, false);
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self::checkUpdate($next);
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}
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}
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}
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