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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* A scheduled task.
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*
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* @package core
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* @copyright 2019 Simey Lameze <simey@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace core\task;
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defined('MOODLE_INTERNAL') || die();
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/**
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* Simple task to clean grade history tables.
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*
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* @copyright 2019 Simey Lameze <simey@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class grade_history_cleanup_task extends scheduled_task {
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/**
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* Get a descriptive name for this task (shown to admins).
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*
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* @return string
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*/
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public function get_name() {
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return get_string('taskgradehistorycleanup', 'admin');
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}
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/**
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* Cleanup history tables.
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*/
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public function execute() {
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global $CFG, $DB;
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if (!empty($CFG->gradehistorylifetime)) {
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$now = time();
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$histlifetime = $now - ($CFG->gradehistorylifetime * DAYSECS);
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$tables = [
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'grade_outcomes_history',
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'grade_categories_history',
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'grade_items_history',
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'grade_grades_history',
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'scale_history'
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];
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foreach ($tables as $table) {
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if ($DB->delete_records_select($table, "timemodified < ?", [$histlifetime])) {
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mtrace(" Deleted old grade history records from '$table'");
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}
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}
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}
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}
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}
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