/**
* Private constructor to ensure the singleton pattern is used correctly.
*/
private function __construct()
{
FileLock::setDirectory($GLOBALS['TMP_PATH']);
$this->lock = new FileLock('studip-cronjob');
}
require '../lib/bootstrap.php';
require_once 'lib/migrations/db_migration.php';
require_once 'lib/migrations/db_schema_version.php';
require_once 'lib/migrations/migrator.php';
page_open(array("sess" => "Seminar_Session", "auth" => "Seminar_Auth", "perm" => "Seminar_Perm", "user" => "Seminar_User"));
$auth->login_if(!$perm->have_perm("root"));
$perm->check("root");
if (empty($_SESSION['_language'])) {
$_SESSION['_language'] = get_accepted_languages();
}
$_language_path = init_i18n($_SESSION['_language']);
include 'lib/include/html_head.inc.php';
$path = $GLOBALS['STUDIP_BASE_PATH'] . '/db/migrations';
$verbose = true;
$target = NULL;
FileLock::setDirectory($GLOBALS['TMP_PATH']);
$lock = new FileLock('web-migrate');
if ($lock->isLocked() && Request::int('release_lock')) {
$lock->release();
}
if (Request::int('target')) {
$target = (int) Request::int('target');
}
$version = new DBSchemaVersion('studip');
$migrator = new Migrator($path, $version, $verbose);
if (Request::submitted('start')) {
ob_start();
set_time_limit(0);
$lock->lock(array('timestamp' => time(), 'user_id' => $GLOBALS['user']->id));
$migrator->migrate_to($target);
$lock->release();
