server/apps/admin_audit/appinfo/app.php

<?php
/**
 * @author Lukas Reschke <lukas@statuscode.ch>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

$logger = \OC::$server->getLogger();
$userSession = \OC::$server->getUserSession();
$groupManager = \OC::$server->getGroupManager();

$auditLogger = new \OCA\Admin_Audit\AuditLogger($logger, $userSession, $groupManager);
$auditLogger->registerHooks();