130 lines
3.7 KiB
PHP
130 lines
3.7 KiB
PHP
<?php
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/**
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* @author Vincent Petry <pvince81@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 OCA\Files\BackgroundJob;
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use OC\BackgroundJob\TimedJob;
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/**
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* Delete all share entries that have no matching entries in the file cache table.
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*/
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class DeleteOrphanedItems extends TimedJob {
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/** @var \OCP\IDBConnection */
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protected $connection;
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/** @var \OCP\ILogger */
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protected $logger;
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/**
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* Default interval in minutes
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*
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* @var int $defaultIntervalMin
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**/
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protected $defaultIntervalMin = 60;
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/**
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* sets the correct interval for this timed job
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*/
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public function __construct() {
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$this->interval = $this->defaultIntervalMin * 60;
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$this->connection = \OC::$server->getDatabaseConnection();
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$this->logger = \OC::$server->getLogger();
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}
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/**
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* Makes the background job do its work
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*
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* @param array $argument unused argument
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*/
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public function run($argument) {
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$this->cleanSystemTags();
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$this->cleanUserTags();
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$this->cleanComments();
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$this->cleanCommentMarkers();
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}
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/**
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* Deleting orphaned system tag mappings
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*
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* @return int Number of deleted entries
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*/
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protected function cleanUp($table, $idCol, $typeCol) {
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$subQuery = $this->connection->getQueryBuilder();
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$subQuery->select($subQuery->expr()->literal('1'))
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->from('filecache', 'f')
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->where($subQuery->expr()->eq($idCol, 'f.fileid'));
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$query = $this->connection->getQueryBuilder();
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$deletedEntries = $query->delete($table)
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->where($query->expr()->eq($typeCol, $query->expr()->literal('files')))
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->andWhere($query->expr()->isNull($query->createFunction('(' . $subQuery->getSql() . ')')))
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->execute();
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return $deletedEntries;
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}
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/**
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* Deleting orphaned system tag mappings
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*
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* @return int Number of deleted entries
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*/
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protected function cleanSystemTags() {
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$deletedEntries = $this->cleanUp('systemtag_object_mapping', 'objectid', 'objecttype');
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$this->logger->debug("$deletedEntries orphaned system tag relations deleted", ['app' => 'DeleteOrphanedItems']);
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return $deletedEntries;
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}
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/**
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* Deleting orphaned user tag mappings
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*
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* @return int Number of deleted entries
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*/
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protected function cleanUserTags() {
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$deletedEntries = $this->cleanUp('vcategory_to_object', 'objid', 'type');
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$this->logger->debug("$deletedEntries orphaned user tag relations deleted", ['app' => 'DeleteOrphanedItems']);
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return $deletedEntries;
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}
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/**
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* Deleting orphaned comments
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*
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* @return int Number of deleted entries
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*/
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protected function cleanComments() {
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$deletedEntries = $this->cleanUp('comments', 'object_id', 'object_type');
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$this->logger->debug("$deletedEntries orphaned comments deleted", ['app' => 'DeleteOrphanedItems']);
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return $deletedEntries;
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}
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/**
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* Deleting orphaned comment read markers
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*
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* @return int Number of deleted entries
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*/
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protected function cleanCommentMarkers() {
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$deletedEntries = $this->cleanUp('comments_read_markers', 'object_id', 'object_type');
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$this->logger->debug("$deletedEntries orphaned comment read marks deleted", ['app' => 'DeleteOrphanedItems']);
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return $deletedEntries;
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}
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}
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