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79 lines
2.5 KiB
PHP
79 lines
2.5 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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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 OCP\DB\QueryBuilder\IQueryBuilder;
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use OCP\Files\FileInfo;
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class ObjectStoreScanner extends Scanner {
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public function scanFile($file, $reuseExisting = 0, $parentId = -1, $cacheData = null, $lock = true, $data = null) {
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return [];
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}
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public function scan($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1, $lock = true) {
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return [];
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}
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protected function scanChildren(string $path, $recursive, int $reuse, int $folderId, bool $lock, int|float $oldSize, &$etagChanged = false) {
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return 0;
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}
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public function backgroundScan() {
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$lastPath = null;
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// find any path marked as unscanned and run the scanner until no more paths are unscanned (or we get stuck)
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// we sort by path DESC to ensure that contents of a folder are handled before the parent folder
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while (($path = $this->getIncomplete()) !== false && $path !== $lastPath) {
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$this->runBackgroundScanJob(function () use ($path) {
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$item = $this->cache->get($path);
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if ($item && $item->getMimeType() !== FileInfo::MIMETYPE_FOLDER) {
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$fh = $this->storage->fopen($path, 'r');
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if ($fh) {
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$stat = fstat($fh);
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if ($stat['size']) {
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$this->cache->update($item->getId(), ['size' => $stat['size']]);
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}
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}
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}
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}, $path);
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// FIXME: this won't proceed with the next item, needs revamping of getIncomplete()
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// to make this possible
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$lastPath = $path;
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}
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}
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/**
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* Unlike the default Cache::getIncomplete this one sorts by path.
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*
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* This is needed since self::backgroundScan doesn't fix child entries when running on a parent folder.
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* By sorting by path we ensure that we encounter the child entries first.
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*
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* @return false|string
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* @throws \OCP\DB\Exception
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*/
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private function getIncomplete() {
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$query = $this->connection->getQueryBuilder();
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$query->select('path')
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->from('filecache')
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->where($query->expr()->eq('storage', $query->createNamedParameter($this->cache->getNumericStorageId(), IQueryBuilder::PARAM_INT)))
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->andWhere($query->expr()->lt('size', $query->createNamedParameter(0, IQueryBuilder::PARAM_INT)))
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->orderBy('path', 'DESC')
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->setMaxResults(1);
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$result = $query->executeQuery();
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$path = $result->fetchOne();
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$result->closeCursor();
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if ($path === false) {
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return false;
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}
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// Make sure Oracle does not continue with null for empty strings
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return (string)$path;
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}
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}
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