spring-cloud-sleuth集成zipkin之spring-cloud-1.3.4(Dalston.SR3)-boot(1.5.6) 学习笔记

概述

• 参考
  
  • http://m.blog.csdn.net/forezp/article/details/76795269
  • https://github.com/forezp/SpringCloudLearning/tree/master/chapter-sleuth
  • https://github.com/spring-cloud/spring-cloud-sleuth
  • http://blog.csdn.net/undergrowth/article/details/78255897

ZipkinAutoConfiguration—->zipkin支持

• 解析以spring.zipkin/spring.sleuth.sampler开头的参数
• 注入HttpZipkinSpanReporter—->ZipkinSpanReporter—->用于将Span信息发送到Zipkin服务器
  
  • 用RestTemplate以POST将span信息转换为字节码信息发出
    
    • 异步从ByteBoundedQueue队列发送Span过程如下:
    • zipkin.reporter.AsyncReporter.BoundedAsyncReporter#flush(zipkin.reporter.BufferNextMessage)
      
      • org.springframework.cloud.sleuth.zipkin.RestTemplateSender#sendSpans
• 注入ZipkinSpanListener—->SpanReporter的实现—->SpanReporter是sleuth与zikin的桥梁
  
  • 同步将Span放入ByteBoundedQueue队列:
    
    • org.springframework.cloud.sleuth.zipkin.ZipkinSpanListener#report
    • org.springframework.cloud.sleuth.zipkin.HttpZipkinSpanReporter#report
      
      • zipkin.reporter.AsyncReporter.BoundedAsyncReporter#report

TraceAutoConfiguration—->sleuth核心支持

• 解析以spring.sleuth/spring.sleuth.keys开头的参数
• 注入DefaultTracer—->Tracer的实现,Tracer依赖SpanReporter(SpanReporter的实现ZipkinSpanListener)

TraceWebAutoConfiguration—->sleuth web环境支持

• 注入TraceWebAspect—->进行相应的切面拦截
• 注入TraceFilter过滤器—->过滤servletRequest/servletResponse
  
  • 请求前,createSpan
  • 请求
  • 响应前,detachOrCloseSpans
    
    • tracer().close(span)
    • this.spanReporter.report(span)—->这里就是回调了ZipkinSpanListener.report将Span放入ByteBoundedQueue队列

测试

• 示例代码可参看位于– https://github.com/forezp/SpringCloudLearning/tree/master/chapter-sleuth