Current Path : C:/xampp/htdocs/moodle/lib/classes/task/ |
Current File : C:/xampp/htdocs/moodle/lib/classes/task/backup_cleanup_task.php |
<?php // This file is part of Moodle - http://moodle.org/ // // Moodle is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Moodle is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Moodle. If not, see <http://www.gnu.org/licenses/>. /** * A scheduled task. * * @package core * @copyright 2013 onwards Martin Dougiamas http://dougiamas.com * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ namespace core\task; /** * Simple task to delete old backup records. */ class backup_cleanup_task extends scheduled_task { /** * Get a descriptive name for this task (shown to admins). * * @return string */ public function get_name() { return get_string('taskbackupcleanup', 'admin'); } /** * Do the job. * Throw exceptions on errors (the job will be retried). */ public function execute() { global $DB; $loglifetime = get_config('backup', 'loglifetime'); if (empty($loglifetime)) { throw new coding_exception('The \'loglifetime\' config is not set. Can\'t proceed and delete old backup records.'); } // First, get the list of all backupids older than loglifetime. $timecreated = time() - ($loglifetime * DAYSECS); $records = $DB->get_records_select('backup_controllers', 'timecreated < ?', array($timecreated), 'id', 'id, backupid'); foreach ($records as $record) { // Check if there is no incomplete adhoc task relying on the given backupid. $params = array('%' . $record->backupid . '%'); $select = $DB->sql_like('customdata', '?', false); $count = $DB->count_records_select('task_adhoc', $select, $params); if ($count === 0) { // Looks like there is no adhoc task, so we can delete logs and controllers for this backupid. $DB->delete_records('backup_logs', array('backupid' => $record->backupid)); $DB->delete_records('backup_controllers', array('backupid' => $record->backupid)); } } } }