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9735b5d61f
Currently you need to use `opendir` and then call `getMetadata` for every file, which adds overhead because most storage backends already get the metadata when doing the `opendir`. While storagebackends can (and do) use caching to relief this problem, this adds cache invalidation dificulties and only a limited number of items are generally cached (to prevent memory usage exploding when scanning large storages) With this new methods storage backends can use the child metadata they got from listing the folder to return metadata without having to keep seperate caches. Signed-off-by: Robin Appelman <robin@icewind.nl>
82 lines
2.5 KiB
PHP
82 lines
2.5 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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*
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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\ObjectStore;
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use OC\Files\Cache\Scanner;
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use OC\Files\Storage\Storage;
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class NoopScanner extends Scanner {
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public function __construct(Storage $storage) {
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//we don't need the storage, so do nothing here
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}
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/**
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* scan a single file and store it in the cache
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*
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* @param string $file
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* @param int $reuseExisting
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* @param int $parentId
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* @param array|null $cacheData existing data in the cache for the file to be scanned
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* @return array an array of metadata of the scanned file
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*/
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public function scanFile($file, $reuseExisting = 0, $parentId = -1, $cacheData = null, $lock = true, $data = null) {
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return [];
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}
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/**
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* scan a folder and all it's children
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*
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* @param string $path
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* @param bool $recursive
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* @param int $reuse
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* @return array with the meta data of the scanned file or folder
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*/
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public function scan($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1, $lock = true) {
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return [];
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}
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/**
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* scan all the files and folders in a folder
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*
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* @param string $path
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* @param bool $recursive
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* @param int $reuse
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* @param array $folderData existing cache data for the folder to be scanned
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* @return int the size of the scanned folder or -1 if the size is unknown at this stage
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*/
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protected function scanChildren($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1, $folderData = null, $lock = true) {
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return 0;
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}
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/**
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* walk over any folders that are not fully scanned yet and scan them
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*/
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public function backgroundScan() {
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//noop
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}
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}
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