下面需要研究Nodejs的例子，找了下zipkin的装备库，看到有一个

http://zipkin.io/pages/existing_instrumentations

分为自家研发版 vs 社区吃瓜群众版，

---在里面找到一个js的库，https://github.com/openzipkin/zipkin-js

下面开始研究Nodejs如何上报信息。

http://stackoverflow.com/questions/39014203/is-it-possible-to-modify-polymer-iron-ajax-element-to-use-cujojs-resthttps://github.com/openzipkin/zipkin-js/tree/master/packages/zipkin-instrumentation-cujojs-rest

====================================================

按照官方的说法，先执行

npm install zipkin --save

===然后， 找到了2个可能有帮助的库

https://github.com/openzipkin/zipkin-js/tree/master/packages/zipkin-transport-http

&

https://github.com/openzipkin/zipkin-js/tree/master/packages/zipkin-instrumentation-cujojs-rest

感觉zipkin-instrumentation-cujojs-rest比较有戏。

先安装这个库

npm install zipkin-instrumentation-cujojs-rest

npm install zipkin-transport-http

npm install --save rest

然后，例子参考:http://stackoverflow.com/questions/39014203/is-it-possible-to-modify-polymer-iron-ajax-element-to-use-cujojs-rest

源码如下：

const {Tracer,BatchRecorder,ExplicitContext} = require('zipkin');
const {HttpLogger}= require('zipkin-transport-http')
const {restInterceptor} = require('zipkin-instrumentation-cujojs-rest');const rest= require('rest');
console.log("1---");const ctxImpl = new ExplicitContext();
const recorder = new BatchRecorder({logger: new HttpLogger({endpoint: 'http://localhost:9411/api/v1/spans'})
});
//
const tracer = new Tracer({ctxImpl, recorder}); // configure your tracer properly here
const nameOfRemoteService = 'youtube';
const client = rest.wrap(restInterceptor, {tracer, remoteServiceName: nameOfRemoteService});//
//
var http= require('http');
http.createServer(function (req, res) {// Your application code here
client
({method:'GET',path: 'http://www.163.com/'}
)
.then
(success => {console.log('got result from YouTube');}, error => {console.error('Error', error);}
);// Your application code end
res.writeHead(200, { 'Content-Type': 'text/plain' });
res.end('Hello World\n');
}
)
.listen(1337, "0.0.0.0");
console.log('Server running at http://0.0.0.0:1337/');

在zipkin的界面上可以看到有数据产生，

然后还有一个问题就是ID的传递，抓包如下：

证明，ID是可以自动传递到下一个进程的。

---------------------------------------------------之前搞错了一个事情，就是这里只是弄好了cs,cr事件，

没有解决sr,ss事件，然后在网上找到了

https://www.npmjs.com/package/zipkin-simple

发现好像也帮不上什么忙，还是直接用官方的zipkin-js.