code: protected void recordRouterWay(String routerName) {
          if (RpcInternalContext.isAttachmentEnable()) {
              RpcInternalContext context = RpcInternalContext.getContext();
              String record = (String) context.getAttachment(RpcConstants.INTERNAL_KEY_ROUTER_RECORD);
              record = record == null ? routerName : record + ">" + routerName;
              context.setAttachment(RpcConstants.INTERNAL_KEY_ROUTER_RECORD, record);
          }
      }
docs: 记录路由路径记录
  
  @param routerName 路由名字
  @since 5.2.0