How to share the same web server port with user's application for transport module?

[dai19470]

springboot项目集成使用sentinel后部署到docker容器里.但是docker对外只提供一个端口给web使用.请教一下.在不对外提供端口的情况下(默认8719),dashboard和使用sentinel的客户端怎么保持心跳?

[cdfive]

目前使用了sentinel的应用端是通过独立的HTTP端口(默认8719)和dashboard交互的，因为应用端可能没有使用spring/springboot，也可能不是web应用。如果使用了springboot web，想仅使用一个端口，目前是不支持的。

是否需要共用一个web端口以及如何支持欢迎一起讨论哈~
cc @sczyh30 @jasonjoo2010

[dai19470]

您好,我的解决方案是共用一个web端口:

1. 不使用sentinel-tranport下面的模块.自己增加定时任务向dashboard的路径/registry/machine 发送心跳数据,配置ip和port为springboot(sentinel应用端)web的ip和端口,
   

2. 参照sentinel-transport-common下com.alibaba.csp.sentinel.command.handler.一一对应在springboot的项目(sentinel应用端口)增加controller.如下图
   
   

3.建议在sentinel-transport下面增加模块sentinel-transport-web,将上述内容统一到这个模块里.建议修改sentinel-transport-common为工具类模块. sentinel-transport-web或sentinel-transport-simple-http调用common中的方法.

[jasonjoo2010]

If it really matters i have another idea that,

0. Introduce a new configuration defining the prefix of path to hook in, for instance, transport-prefix
1. Introduce new module, for instance, sentinel-transport-springboot, intercepting into springboot
2. Introduce new module, for instance, sentinel-transport-servlet, providing SentinelTransportServlet to register
3. Other frameworks adaption.

Follow the sentinel way: Introduce what you want and you have.

[dai19470]

@jasonjoo2010 Yeah! i used like your idea :

my code is based on official Sentinel for secondary development, and has a big different with the official code,so if share my code that is of small significance(我的代码是基于官方代码二次开发的,和官方代码差别很大,所以贡献出来没有多大意义,可以的话联系我提供一个通用的,为sentinel贡献一份力量)

[jasonjoo2010]

@sczyh30 @cdfive so what do you think about it?

If it's worthy we should make it agile because here's a nearly completed implementation of them.

[shenbaoyong]

I have a idea, I create a new module named sentinel-transport-spring-mvc, implements tow interfaces of spring-mvc(SentinelApiHandlerAdapter-HandlerAdapter SentinelApiHandlerMapping-HandlerMapping), mapping the api of dashboard want to visit to SentinelApiHandler(CommandHandler). In this way, we no need update the existing module.
（我有一个想法，我新加了一个模块sentinel-transport-spring-mvc,实现spring-mvc里面的HandlerAdapter和HandlerMapping，把控制台需要访问的接口映射到CommandHandler。这样不需要改动已有的模块，CommandHandler的逻辑也不需要重新实现一遍）

[cdfive]

@shenbaoyong Good idea! It really solved the problem.