zipkin——分布式性能追踪日志系统

黑洞代码

发布于 2021-01-14 16:30:41

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zipkin架构图

包含组件 collector 收集器 storage 存储 api 查询 webUI 界面 ZipKin数据模型 Trace：一组代表一次用户请求所包含的spans，其中根span只有一个。 Span：一组代表一次HTTP/RPC请求所包含的annotations。 annotation：包括一个值，时间戳，主机名(留痕迹)。几个时间 cs：客户端发起请求，标志Span的开始 sr：服务端接收到请求，并开始处理内部事务，其中sr - cs则为网络延迟和时钟抖动 ss：服务端处理完请求，返回响应内容，其中ss - sr则为服务端处理请求耗时 cr：客户端接收到服务端响应内容，标志着Span的结束，其中cr - ss则为网络延迟和时钟抖动启动zipkin java -jar zipkin-server-2.10.1-exec.jar Demo

service1

对外服务

@RestController
@Api("service的API接口")
@RequestMapping("/service1")
public class ZipkinController {

    @Autowired
    private CloseableHttpClient httpClient;

    @ApiOperation("trace第一步")
    @GetMapping("/test")
    public String service() throws Exception {
        HttpGet get = new HttpGet("http://localhost:8082/service2/test");
        CloseableHttpResponse response = httpClient.execute(get);
        return EntityUtils.toString(response.getEntity(), "utf-8");
    }

}

配置zipkin组件

@Configuration
public class ZipkinConfig {


    /**
     * span信息收集器
     * @return
     */
    @Bean
    public SpanCollector spanCollector(){
        HttpSpanCollector.Config config = HttpSpanCollector.Config.builder()
                //默认false，span在transport之前是否会被gzipped
                .compressionEnabled(false)
                .connectTimeout(5000)
                .flushInterval(1)
                .readTimeout(6000)
                .build();
        return HttpSpanCollector.create("http://localhost:9411", config, new EmptySpanCollectorMetricsHandler());
    }


    /**
     * 作为各调用链路，只需要负责将指定格式的数据发送给zipkin
     * @param spanCollector
     * @return
     */
    @Bean
    public Brave brave(SpanCollector spanCollector){
        //指定serviceName
        Brave.Builder builder = new Brave.Builder("service1");
        builder.spanCollector(spanCollector);
        //采集率
        builder.traceSampler(Sampler.create(1));
        return builder.build();
    }

    /**
     * 设置client的（发起请求和获取到服务端返回信息的）拦截器
     * @param brave
     * @return
     */
    @Bean
    public BraveServletFilter braveServletFilter(Brave brave){
        BraveServletFilter filter = new BraveServletFilter(brave.serverRequestInterceptor(), brave.serverResponseInterceptor(), new DefaultSpanNameProvider());
        return filter;
    }

    /**
     * httpClient客户端，需要clientRequestInterceptor，clientResponseInterceptor分别完成cs和cr操作
     * @param brave
     * @return
     */
    @Bean
    public CloseableHttpClient httpClient(Brave brave) {
        CloseableHttpClient httpClient = HttpClients.custom()
                .addInterceptorFirst(new BraveHttpRequestInterceptor(brave.clientRequestInterceptor(), new DefaultSpanNameProvider()))
                .addInterceptorFirst(new BraveHttpResponseInterceptor(brave.clientResponseInterceptor()))
                .build();
        return httpClient;
    }

设置服务名和端口

spring.application.name=service1
server.port=8081

maven依赖

<dependencies>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
   </dependency>
   <dependency>
      <groupId>io.zipkin.brave</groupId>
      <artifactId>brave-core</artifactId>
      <version>3.9.0</version>
   </dependency>
   <dependency>
      <groupId>io.zipkin.brave</groupId>
      <artifactId>brave-spancollector-http</artifactId>
      <version>3.9.0</version>
   </dependency>
   <dependency>
      <groupId>io.zipkin.brave</groupId>
      <artifactId>brave-web-servlet-filter</artifactId>
      <version>3.9.0</version>
   </dependency>
   <dependency>
      <groupId>io.zipkin.brave</groupId>
      <artifactId>brave-apache-http-interceptors</artifactId>
      <version>3.9.0</version>
   </dependency>
   <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
   </dependency>
   <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger2</artifactId>
      <version>2.6.1</version>
   </dependency>
   <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger-ui</artifactId>
      <version>2.6.1</version>
   </dependency>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
   </dependency>
</dependencies>

service2、service3、service4同上。

zipkin控制台