Current File : /opt/bitnami/apps/moodle/htdocs.backup/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;
$timenow = time();
// Delete old backup_controllers and logs.
$loglifetime = get_config('backup', 'loglifetime');
if (!empty($loglifetime)) { // Value in days.
$loglifetime = $timenow - ($loglifetime * 3600 * 24);
// Delete child records from backup_logs.
$DB->execute("DELETE FROM {backup_logs}
WHERE EXISTS (
SELECT 'x'
FROM {backup_controllers} bc
WHERE bc.backupid = {backup_logs}.backupid
AND bc.timecreated < ?)", array($loglifetime));
// Delete records from backup_controllers.
$DB->execute("DELETE FROM {backup_controllers}
WHERE timecreated < ?", array($loglifetime));
}
}
}
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