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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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* Adhoc task that performs single automated course backup.
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*
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* @package core
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* @copyright 2019 John Yao <johnyao@catalyst-au.net>
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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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require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
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require_once($CFG->dirroot . '/backup/util/helper/backup_cron_helper.class.php');
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/**
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* Adhoc task that performs single automated course backup.
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*
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* @package core
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* @copyright 2019 John Yao <johnyao@catalyst-au.net>
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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 course_backup_task extends \core\task\adhoc_task {
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/**
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* Run the adhoc task and preform the backup.
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*/
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public function execute() {
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global $DB;
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$lockfactory = \core\lock\lock_config::get_lock_factory('course_backup_adhoc');
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$courseid = $this->get_custom_data()->courseid;
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try {
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$course = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);
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} catch (\moodle_exception $e) {
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mtrace('Invalid course id: ' . $courseid . ', task aborted.');
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return;
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}
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if (!$lock = $lockfactory->get_lock('course_backup_adhoc_task_' . $courseid, 10)) {
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mtrace('Backup adhoc task for: ' . $course->fullname . 'is already running.');
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return;
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} else {
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mtrace('Processing automated backup for course: ' . $course->fullname);
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}
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try {
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$backupcourse = $DB->get_record('backup_courses', array(
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'courseid' => $courseid,
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'laststatus' => \backup_cron_automated_helper::BACKUP_STATUS_QUEUED
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), '*', MUST_EXIST);
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$adminid = $this->get_custom_data()->adminid;
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$backupcourse->laststarttime = time();
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$backupcourse->laststatus = \backup_cron_automated_helper::BACKUP_STATUS_UNFINISHED;
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$DB->update_record('backup_courses', $backupcourse);
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$backupcourse->laststatus = \backup_cron_automated_helper::launch_automated_backup($course, time(), $adminid);
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if ($backupcourse->laststatus == \backup_cron_automated_helper::BACKUP_STATUS_ERROR ||
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$backupcourse->laststatus == \backup_cron_automated_helper::BACKUP_STATUS_UNFINISHED) {
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mtrace('Automated backup for course: ' . $course->fullname . ' failed.');
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// Reset unfinished to error.
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$backupcourse->laststatus = \backup_cron_automated_helper::BACKUP_STATUS_ERROR;
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}
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// Remove excess backups.
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$removedcount = \backup_cron_automated_helper::remove_excess_backups($course, time());
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$backupcourse->lastendtime = time();
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$backupcourse->nextstarttime = \backup_cron_automated_helper::calculate_next_automated_backup(null, time());
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$DB->update_record('backup_courses', $backupcourse);
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} catch (\moodle_exception $e) {
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mtrace('Automated backup for course: ' . $course->fullname . ' encounters an error.');
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mtrace('Exception: ' . $e->getMessage());
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mtrace('Debug: ' . $e->debuginfo);
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} finally {
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// Everything is finished release lock.
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$lock->release();
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mtrace('Automated backup for course: ' . $course->fullname . ' completed.');
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}
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}
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}
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