Proyectos de Subversion Moodle

<?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 asynchronous backups.

 *

 * @package    core

 * @copyright  2018 Matt Porritt <mattp@catalyst-au.net>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

namespace core\task;

use async_helper;

defined('MOODLE_INTERNAL') || die();

require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');

require_once($CFG->dirroot . '/backup/moodle2/backup_plan_builder.class.php');

/**

 * Adhoc task that performs asynchronous backups.

 *

 * @package     core

 * @copyright   2018 Matt Porritt <mattp@catalyst-au.net>

 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class asynchronous_backup_task extends adhoc_task {

    /**

     * Run the adhoc task and preform the backup.

     */

    public function execute() {

        global $DB;

        $started = time();

        $backupid = $this->get_custom_data()->backupid;

        $backuprecord = $DB->get_record('backup_controllers', array('backupid' => $backupid), 'id, controller', MUST_EXIST);

        mtrace('Processing asynchronous backup for backup: ' . $backupid);

        // Get the backup controller by backup id. If controller is invalid, this task can never complete.

        if ($backuprecord->controller === '') {

            mtrace('Bad backup controller status, invalid controller, ending backup execution.');

            return;

        }

        $bc = \backup_controller::load_controller($backupid);

        $bc->set_progress(new \core\progress\db_updater($backuprecord->id, 'backup_controllers', 'progress'));

        // Do some preflight checks on the backup.

        $status = $bc->get_status();

        $execution = $bc->get_execution();

        // Check that the backup is in the correct status and

        // that is set for asynchronous execution.

        if ($status == \backup::STATUS_AWAITING && $execution == \backup::EXECUTION_DELAYED) {

            // Execute the backup.

            $bc->execute_plan();

            // Send message to user if enabled.

            $messageenabled = (bool)get_config('backup', 'backup_async_message_users');

            if ($messageenabled && $bc->get_status() == \backup::STATUS_FINISHED_OK) {

                $asynchelper = new async_helper('backup', $backupid);

                $asynchelper->send_message();

            }

        } else {

            // If status isn't 700, it means the process has failed.

            // Retrying isn't going to fix it, so marked operation as failed.

            $bc->set_status(\backup::STATUS_FINISHED_ERR);

            mtrace('Bad backup controller status, is: ' . $status . ' should be 700, marking job as failed.');

        }

        // Cleanup.

        $bc->destroy();

        $duration = time() - $started;

        mtrace('Backup completed in: ' . $duration . ' seconds');

    }

}