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/>.

/**

 * A scheduled task.

 *

 * @package    repository_onedrive

 * @copyright  2017 Damyon Wiese

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

 */

namespace repository_onedrive;

use \core\task\scheduled_task;

use DateTime;

use DateInterval;

use repository_exception;

use \core\oauth2\rest_exception;

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

require_once($CFG->dirroot . '/repository/lib.php');

/**

 * Simple task to delete temporary permission records.

 * @package    repository_onedrive

 * @copyright  2017 Damyon Wiese

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

 */

class remove_temp_access_task extends scheduled_task {

    /**

     * Get a descriptive name for this task (shown to admins).

     *

     * @return string

     */

    public function get_name() {

        return get_string('removetempaccesstask', 'repository_onedrive');

    }

    /**

     * Do the job.

     * Throw exceptions on errors (the job will be retried).

     */

    public function execute() {

        $accessrecords = access::get_records();

        $expires = new DateTime();

        $expires->sub(new DateInterval("P7D"));

        $timestamp = $expires->getTimestamp();

        $issuerid = get_config('onedrive', 'issuerid');

        $issuer = \core\oauth2\api::get_issuer($issuerid);

        // Add the current user as an OAuth writer.

        $systemauth = \core\oauth2\api::get_system_oauth_client($issuer);

        if ($systemauth === false) {

            $details = 'Cannot connect as system user';

            throw new repository_exception('errorwhilecommunicatingwith', 'repository', '', $details);

        }

        $systemservice = new \repository_onedrive\rest($systemauth);

        foreach ($accessrecords as $access) {

            if ($access->get('timemodified') < $timestamp) {

                $params = ['permissionid' => $access->get('permissionid'), 'itemid' => $access->get('itemid')];

                try {

                    $systemservice->call('delete_permission', $params);

                } catch (rest_exception $re) {

                    // We log and give up here or we will always fail for eternity.

                    mtrace('Failed to remove access from file: ' . $access->get('itemid'));

                }

                $access->delete();

            }

        }

    }

}