private function updateConnectionPath($conn, $response)
 {
     //updating path
     //clean old points
     $oldPaths = $conn->getPaths()->all();
     foreach ($oldPaths as $oldPath) {
         $oldPath->delete();
     }
     //save new points
     $pathNodes = $response->reservation->criteria->children->child;
     if (count($pathNodes) < 2) {
         $pathNodes = [$pathNodes];
     }
     Yii::trace(print_r($pathNodes, true));
     $i = 0;
     foreach ($pathNodes as $pathNode) {
         Yii::trace(print_r($pathNode, true));
         $pathNodeXml = $pathNode->any;
         $pathNodeXml = str_replace("<nsi_p2p:p2ps>", "<p2p>", $pathNodeXml);
         $pathNodeXml = str_replace("</nsi_p2p:p2ps>", "</p2p>", $pathNodeXml);
         $pathNodeXml = '<?xml version="1.0" encoding="UTF-8"?>' . $pathNodeXml;
         $xml = new \DOMDocument();
         $xml->loadXML($pathNodeXml);
         $parser = new \DOMXpath($xml);
         $src = $parser->query("//sourceSTP");
         $dst = $parser->query("//destSTP");
         $path = new ConnectionPath();
         $path->conn_id = $conn->id;
         $path->path_order = $i;
         $i++;
         $path->setPortBySTP($src->item(0)->nodeValue);
         $path->setDomainBySTP($src->item(0)->nodeValue);
         if (!$path->save()) {
             Yii::trace($path);
             return false;
         }
         $path = new ConnectionPath();
         $path->conn_id = $conn->id;
         $path->path_order = $i;
         $i++;
         $path->setPortBySTP($dst->item(0)->nodeValue);
         $path->setDomainBySTP($dst->item(0)->nodeValue);
         if (!$path->save()) {
             Yii::trace($path);
             return false;
         }
     }
     return true;
 }