Current File : /home/vacivi36/ava/lib/classes/task/course_backup_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/>.
/**
* Adhoc task that performs single automated course backup.
*
* @package core
* @copyright 2019 John Yao <johnyao@catalyst-au.net>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core\task;
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
require_once($CFG->dirroot . '/backup/util/helper/backup_cron_helper.class.php');
/**
* Adhoc task that performs single automated course backup.
*
* @package core
* @copyright 2019 John Yao <johnyao@catalyst-au.net>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class course_backup_task extends \core\task\adhoc_task {
/**
* Run the adhoc task and preform the backup.
*/
public function execute() {
global $DB;
$lockfactory = \core\lock\lock_config::get_lock_factory('course_backup_adhoc');
$courseid = $this->get_custom_data()->courseid;
try {
$course = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);
} catch (\moodle_exception $e) {
mtrace('Invalid course id: ' . $courseid . ', task aborted.');
return;
}
if (!$lock = $lockfactory->get_lock('course_backup_adhoc_task_' . $courseid, 10)) {
mtrace('Backup adhoc task for: ' . $course->fullname . 'is already running.');
return;
} else {
mtrace('Processing automated backup for course: ' . $course->fullname);
}
try {
$backupcourse = $DB->get_record('backup_courses', array(
'courseid' => $courseid,
'laststatus' => \backup_cron_automated_helper::BACKUP_STATUS_QUEUED
), '*', MUST_EXIST);
$adminid = $this->get_custom_data()->adminid;
$backupcourse->laststarttime = time();
$backupcourse->laststatus = \backup_cron_automated_helper::BACKUP_STATUS_UNFINISHED;
$DB->update_record('backup_courses', $backupcourse);
$backupcourse->laststatus = \backup_cron_automated_helper::launch_automated_backup($course, time(), $adminid);
if ($backupcourse->laststatus == \backup_cron_automated_helper::BACKUP_STATUS_ERROR ||
$backupcourse->laststatus == \backup_cron_automated_helper::BACKUP_STATUS_UNFINISHED) {
mtrace('Automated backup for course: ' . $course->fullname . ' failed.');
// Reset unfinished to error.
$backupcourse->laststatus = \backup_cron_automated_helper::BACKUP_STATUS_ERROR;
}
// Remove excess backups.
$removedcount = \backup_cron_automated_helper::remove_excess_backups($course, time());
$backupcourse->lastendtime = time();
$backupcourse->nextstarttime = \backup_cron_automated_helper::calculate_next_automated_backup(null, time());
$DB->update_record('backup_courses', $backupcourse);
} catch (\moodle_exception $e) {
mtrace('Automated backup for course: ' . $course->fullname . ' encounters an error.');
mtrace('Exception: ' . $e->getMessage());
mtrace('Debug: ' . $e->debuginfo);
} finally {
// Everything is finished release lock.
$lock->release();
mtrace('Automated backup for course: ' . $course->fullname . ' completed.');
}
}
}
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