DBFarmRole::LoadByID PHP Метод

    public static function LoadByID($id)
    {
        $db = \Scalr::getDb();
        $farm_role_info = $db->GetRow("SELECT * FROM farm_roles WHERE id=?", array($id));
        if (!$farm_role_info) {
            throw new Exception(sprintf(_("Farm Role ID #%s not found"), $id));
        }
        $DBFarmRole = new DBFarmRole($farm_role_info['id']);
        foreach (self::$FieldPropertyMap as $k => $v) {
            $DBFarmRole->{$v} = $farm_role_info[$k];
        }
        return $DBFarmRole;
    }

 public function xSaveAction()
 {
     //TODO: Think about WebSockets
     $this->request->defineParams(array('config' => array('type' => 'json')));
     $farmRole = DBFarmRole::LoadByID($this->getParam('farmRoleId'));
     $this->user->getPermissions()->validate($farmRole);
     $behavior = $this->getParam('behavior');
     $updateFarmRoleSettings = false;
     if (!$farmRole->GetRoleObject()->hasBehavior($behavior)) {
         throw new Exception("Behavior not assigned to this role");
     }
     $config = array();
     foreach ($this->getParam('config') as $conf) {
         if (!$config[$conf['configFile']]) {
             $config[$conf['configFile']] = array();
         }
         if ($config[$conf['configFile']][$conf['key']] === null) {
             $config[$conf['configFile']][$conf['key']] = $conf['value'];
         } else {
             throw new Exception("Variable {$conf['key']} from {$conf['configFile']} already defined. Please remove second definition");
         }
     }
     // Update master
     if ($this->getParam('masterServerId')) {
         $dbServer = DBServer::LoadByID($this->getParam('masterServerId'));
         $this->user->getPermissions()->validate($dbServer);
         if ($dbServer->farmRoleId != $farmRole->ID) {
             throw new Exception("Server not found");
         }
         if ($dbServer->status != SERVER_STATUS::RUNNING) {
             throw new Exception("Master server is not running. Config cannot be applied.");
         }
         $this->setConfig($dbServer, $behavior, $config);
         $servers = 0;
         $savedServers = 1;
         $updateFarmRoleSettings = true;
         foreach ($farmRole->GetServersByFilter(array('status' => array(SERVER_STATUS::RUNNING, SERVER_STATUS::INIT))) as $server) {
             $servers++;
             try {
                 if ($server->serverId == $dbServer->serverId) {
                     continue;
                 }
                 $this->setConfig($server, $behavior, $config);
                 $savedServers++;
             } catch (Exception $e) {
                 $warn[] = sprintf("Cannot update configuration on %s (%s): %s", $server->serverId, $server->remoteIp, $e->getMessage());
             }
         }
     } else {
         $updateFarmRoleSettings = true;
     }
     if ($updateFarmRoleSettings) {
         $farmRole->SetServiceConfiguration($behavior, $config);
     }
     if (!$warn) {
         $this->response->success(sprintf("Config successfully applied on %s of %s servers", $savedServers, $servers));
     } else {
         $this->response->warning(sprintf("Config was applied on %s of %s servers: %s", $savedServers, $servers, implode("\n", $warn)));
     }
 }