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<?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 2019 Simey Lameze <simey@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core\task;
defined('MOODLE_INTERNAL') || die();
/**
* Simple task to clean grade history tables.
*
* @copyright 2019 Simey Lameze <simey@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class grade_history_cleanup_task extends scheduled_task {
/**
* Get a descriptive name for this task (shown to admins).
*
* @return string
*/
public function get_name() {
return get_string('taskgradehistorycleanup', 'admin');
}
/**
* Cleanup history tables.
*/
public function execute() {
global $CFG, $DB;
if (!empty($CFG->gradehistorylifetime)) {
$now = time();
$histlifetime = $now - ($CFG->gradehistorylifetime * DAYSECS);
$tables = [
'grade_outcomes_history',
'grade_categories_history',
'grade_items_history',
'grade_grades_history',
'scale_history'
];
foreach ($tables as $table) {
if ($DB->delete_records_select($table, "timemodified < ?", [$histlifetime])) {
mtrace(" Deleted old grade history records from '$table'");
}
}
}
}
}