brave本身没有对AsyncHttpClient提供类似于brave-okhttp的ClientRequestInterceptor和ClientResponseInterceptor，所以需要我们定制，而ServerRequestInterceptor和ServerResponseInterceptor是在BraveServletFilter部分直接指定就好了（这在任何client技术下都可以复用）。

实际上，ClientRequestInterceptor和ClientResponseInterceptor也是我们的定制点。

一、代码

基本参考第二十七章 springboot + zipkin（brave-okhttp实现）

1、service1

1.1、pom.xml

 <!-- zipkin brave -->

         <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>

         <!-- async-http-client -->

         <dependency>

             <groupId>com.ning</groupId>

             <artifactId>async-http-client</artifactId>

             <version>1.9.31</version>

         </dependency>

1.2、ZipkinConfig

 package com.xxx.service1.zipkin.brave.async;

 import org.springframework.context.annotation.Bean;

 import org.springframework.context.annotation.Configuration;

 import com.github.kristofa.brave.Brave;

 import com.github.kristofa.brave.EmptySpanCollectorMetricsHandler;

 import com.github.kristofa.brave.Sampler;

 import com.github.kristofa.brave.SpanCollector;

 import com.github.kristofa.brave.http.DefaultSpanNameProvider;

 import com.github.kristofa.brave.http.HttpSpanCollector;

 import com.github.kristofa.brave.servlet.BraveServletFilter;

 import com.ning.http.client.AsyncHttpClient;

 @Configuration

 public class ZipkinConfig {

     @Bean

     public SpanCollector spanCollector() {

         HttpSpanCollector.Config spanConfig = HttpSpanCollector.Config.builder()

                                               .compressionEnabled(false)//默认false，span在transport之前是否会被gzipped。

                                               .connectTimeout(5000)//5s，默认10s

                                               .flushInterval(1)//1s

                                               .readTimeout(6000)//5s，默认60s

                                               .build();

         return HttpSpanCollector.create("http://localhost:9411",

                                         spanConfig,

                                         new EmptySpanCollectorMetricsHandler());

     }

     @Bean

     public Brave brave(SpanCollector spanCollector) {

         Brave.Builder builder = new Brave.Builder("asyn1 - service1 - 1");//指定serviceName

         builder.spanCollector(spanCollector);

         builder.traceSampler(Sampler.create(1));//采集率

         return builder.build();

     }

     @Bean

     public BraveServletFilter braveServletFilter(Brave brave) {

         /**

          * 设置sr、ss拦截器

          */

         return new BraveServletFilter(brave.serverRequestInterceptor(),

                                       brave.serverResponseInterceptor(),

                                       new DefaultSpanNameProvider());

     }

     @Bean

     public AsyncHttpClient asyncHttpClient(){

         return new AsyncHttpClient();

     }

 }

说明：指定了serviceName："asyn1 - service1 - 1"

1.3、ZipkinAsyncController

 package com.xxx.service1.zipkin.brave.async;

 import java.net.URI;

 import java.util.concurrent.Future;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.web.bind.annotation.RequestMapping;

 import org.springframework.web.bind.annotation.RequestMethod;

 import org.springframework.web.bind.annotation.RestController;

 import com.github.kristofa.brave.Brave;

 import com.github.kristofa.brave.http.DefaultSpanNameProvider;

 import com.github.kristofa.brave.http.HttpClientRequest;

 import com.github.kristofa.brave.http.HttpClientRequestAdapter;

 import com.github.kristofa.brave.http.HttpClientResponseAdapter;

 import com.github.kristofa.brave.http.HttpResponse;

 import com.ning.http.client.AsyncHttpClient;

 import com.ning.http.client.Request;

 import com.ning.http.client.RequestBuilder;

 import com.ning.http.client.Response;

 import io.swagger.annotations.Api;

 import io.swagger.annotations.ApiOperation;

 @Api("zipkin brave async api")

 @RestController

 @RequestMapping("/zipkin/async/service1")

 public class ZipkinAsyncController {

     @Autowired

     private AsyncHttpClient asyncHttpClient;

     @Autowired

     private Brave           brave;

     @ApiOperation("trace第一步")

     @RequestMapping(value = "/test1", method = RequestMethod.GET)

     public String myboot() {

         try {

             RequestBuilder builder = new RequestBuilder();

             String url = "http://localhost:8032/zipkin/async/service2/test2";

             builder.setUrl(url);

             Request request = builder.build();

             clientRequestInterceptor(request);

             Future<Response> response = asyncHttpClient.executeRequest(request);

             clientResponseInterceptor(response.get());

             return response.get().getResponseBody();

         } catch (Exception e) {

             e.printStackTrace();

             return "";

         }

     }

     private void clientRequestInterceptor(Request request) {

         brave.clientRequestInterceptor().handle(new HttpClientRequestAdapter(new HttpClientRequest() {

             @Override

             public URI getUri() {

                 return URI.create(request.getUrl());

             }

             @Override

             public String getHttpMethod() {

                 return request.getMethod();

             }

             @Override

             public void addHeader(String headerKey, String headerValue) {

                 request.getHeaders().add(headerKey, headerValue);

             }

         }, new DefaultSpanNameProvider()));

     }

     private void clientResponseInterceptor(Response response) {

         brave.clientResponseInterceptor().handle(new HttpClientResponseAdapter(new HttpResponse() {

             public int getHttpStatusCode() {

                 return response.getStatusCode();

             }

         }));

     }

 }

说明：

  • clientRequestInterceptor(com.ning.http.client.Request request)

    • 其实就是在做cs
  • clientResponseInterceptor(com.ning.http.client.Response response)
    • 其实就是在做cr

2、service2

2.1、pom.xml

 <!-- zipkin brave -->

         <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>

         <!-- async-http-client -->

         <dependency>

             <groupId>com.ning</groupId>

             <artifactId>async-http-client</artifactId>

             <version>1.9.31</version>

         </dependency>

2.2、ZipkinConfig

 package com.xxx.service1.zipkin.brave.async;

 import org.springframework.context.annotation.Bean;

 import org.springframework.context.annotation.Configuration;

 import com.github.kristofa.brave.Brave;

 import com.github.kristofa.brave.EmptySpanCollectorMetricsHandler;

 import com.github.kristofa.brave.Sampler;

 import com.github.kristofa.brave.SpanCollector;

 import com.github.kristofa.brave.http.DefaultSpanNameProvider;

 import com.github.kristofa.brave.http.HttpSpanCollector;

 import com.github.kristofa.brave.servlet.BraveServletFilter;

 import com.ning.http.client.AsyncHttpClient;

 @Configuration

 public class ZipkinConfig {

     @Bean

     public SpanCollector spanCollector() {

         HttpSpanCollector.Config spanConfig = HttpSpanCollector.Config.builder()

                                               .compressionEnabled(false)//默认false，span在transport之前是否会被gzipped。

                                               .connectTimeout(5000)//5s，默认10s

                                               .flushInterval(1)//1s

                                               .readTimeout(6000)//5s，默认60s

                                               .build();

         return HttpSpanCollector.create("http://localhost:9411",

                                         spanConfig,

                                         new EmptySpanCollectorMetricsHandler());

     }

     @Bean

     public Brave brave(SpanCollector spanCollector) {

         Brave.Builder builder = new Brave.Builder("asyn2 - service2 - 2");//指定serviceName

         builder.spanCollector(spanCollector);

         builder.traceSampler(Sampler.create(1));//采集率

         return builder.build();

     }

     @Bean

     public BraveServletFilter braveServletFilter(Brave brave) {

         /**

          * 设置sr、ss拦截器

          */

         return new BraveServletFilter(brave.serverRequestInterceptor(),

                                       brave.serverResponseInterceptor(),

                                       new DefaultSpanNameProvider());

     }

     @Bean

     public AsyncHttpClient asyncHttpClient(){

         return new AsyncHttpClient();

     }

 }

说明：指定了serviceName："asyn2 - service2 - 2"

2.3、ZipkinAsyncController

 package com.xxx.service2.zipkin.brave.async;

 import java.net.URI;

 import java.util.concurrent.Future;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.web.bind.annotation.RequestMapping;

 import org.springframework.web.bind.annotation.RequestMethod;

 import org.springframework.web.bind.annotation.RestController;

 import com.github.kristofa.brave.Brave;

 import com.github.kristofa.brave.http.DefaultSpanNameProvider;

 import com.github.kristofa.brave.http.HttpClientRequest;

 import com.github.kristofa.brave.http.HttpClientRequestAdapter;

 import com.github.kristofa.brave.http.HttpClientResponseAdapter;

 import com.github.kristofa.brave.http.HttpResponse;

 import com.ning.http.client.AsyncHttpClient;

 import com.ning.http.client.Request;

 import com.ning.http.client.RequestBuilder;

 import com.ning.http.client.Response;

 import io.swagger.annotations.Api;

 import io.swagger.annotations.ApiOperation;

 @Api("zipkin brave async api")

 @RestController

 @RequestMapping("/zipkin/async/service2")

 public class ZipkinAsyncController {

     @Autowired

     private AsyncHttpClient asyncHttpClient;

     @Autowired

     private Brave           brave;

     @ApiOperation("trace第2步")

     @RequestMapping(value = "/test2", method = RequestMethod.GET)

     public String myboot2() {

         try {

             /*****************************serivce3*******************************/

             RequestBuilder builder3 = new RequestBuilder();

             String url3 = "http://localhost:8033/zipkin/async/service3/test3";

             builder3.setUrl(url3);

             Request request3 = builder3.build();

             clientRequestInterceptor(request3);

             Future<Response> response3 = asyncHttpClient.executeRequest(request3);

             clientResponseInterceptor(response3.get());

             /*****************************serivce4*******************************/

             RequestBuilder builder4 = new RequestBuilder();

             String url4 = "http://localhost:8034/zipkin/async/service4/test4";

             builder4.setUrl(url4);

             Request request4 = builder4.build();

             clientRequestInterceptor(request4);

             Future<Response> response4 = asyncHttpClient.executeRequest(request4);

             clientResponseInterceptor(response4.get());

             return response3.get().getResponseBody() + "=====" + response4.get().getResponseBody();

         } catch (Exception e) {

             e.printStackTrace();

             return "";

         }

     }

     private void clientRequestInterceptor(Request request) {

         brave.clientRequestInterceptor().handle(new HttpClientRequestAdapter(new HttpClientRequest() {

             @Override

             public URI getUri() {

                 return URI.create(request.getUrl());

             }

             @Override

             public String getHttpMethod() {

                 return request.getMethod();

             }

             @Override

             public void addHeader(String headerKey, String headerValue) {

                 request.getHeaders().add(headerKey, headerValue);

             }

         }, new DefaultSpanNameProvider()));

     }

     private void clientResponseInterceptor(Response response) {

         brave.clientResponseInterceptor().handle(new HttpClientResponseAdapter(new HttpResponse() {

             public int getHttpStatusCode() {

                 return response.getStatusCode();

             }

         }));

     }

 }

3、service3

3.1、pom.xml

 <!-- zipkin brave -->

         <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>

3.2、ZipkinConfig

 package com.xxx.service3.zipkin.brave.async;

 import org.springframework.context.annotation.Bean;

 import org.springframework.context.annotation.Configuration;

 import com.github.kristofa.brave.Brave;

 import com.github.kristofa.brave.EmptySpanCollectorMetricsHandler;

 import com.github.kristofa.brave.Sampler;

 import com.github.kristofa.brave.SpanCollector;

 import com.github.kristofa.brave.http.DefaultSpanNameProvider;

 import com.github.kristofa.brave.http.HttpSpanCollector;

 import com.github.kristofa.brave.servlet.BraveServletFilter;

 @Configuration

 public class ZipkinConfig {

     @Bean

     public SpanCollector spanCollector() {

         HttpSpanCollector.Config spanConfig = HttpSpanCollector.Config.builder()

                                               .compressionEnabled(false)//默认false，span在transport之前是否会被gzipped。

                                               .connectTimeout(5000)//5s，默认10s

                                               .flushInterval(1)//1s

                                               .readTimeout(6000)//5s，默认60s

                                               .build();

         return HttpSpanCollector.create("http://localhost:9411",

                                         spanConfig,

                                         new EmptySpanCollectorMetricsHandler());

     }

     @Bean

     public Brave brave(SpanCollector spanCollector) {

         Brave.Builder builder = new Brave.Builder("asyn3 - service3 - 3");//指定serviceName

         builder.spanCollector(spanCollector);

         builder.traceSampler(Sampler.create(1));//采集率

         return builder.build();

     }

     @Bean

     public BraveServletFilter braveServletFilter(Brave brave) {

         /**

          * 设置sr、ss拦截器

          */

         return new BraveServletFilter(brave.serverRequestInterceptor(),

                                       brave.serverResponseInterceptor(),

                                       new DefaultSpanNameProvider());

     }

 }

说明：指定了serviceName："asyn3 - service3 - 3"

3.3、ZipkinAsyncController

 package com.xxx.service3.zipkin.brave.async;

 import org.springframework.web.bind.annotation.RequestMapping;

 import org.springframework.web.bind.annotation.RequestMethod;

 import org.springframework.web.bind.annotation.RestController;

 import io.swagger.annotations.Api;

 import io.swagger.annotations.ApiOperation;

 @Api("zipkin brave async api")

 @RestController

 @RequestMapping("/zipkin/async/service3")

 public class ZipkinAsyncController {

     @ApiOperation("trace第3步")

     @RequestMapping(value = "/test3", method = RequestMethod.GET)

     public String myboot3() {

         try {

             return "async - service3";

         } catch (Exception e) {

             e.printStackTrace();

             return "";

         }

     }

 }

4、service4

4.1、pom.xml

 <!-- zipkin brave -->

         <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>

4.2、ZipkinConfig

 package com.xxx.service4.zipkin.brave.async;

 import org.springframework.context.annotation.Bean;

 import org.springframework.context.annotation.Configuration;

 import com.github.kristofa.brave.Brave;

 import com.github.kristofa.brave.EmptySpanCollectorMetricsHandler;

 import com.github.kristofa.brave.Sampler;

 import com.github.kristofa.brave.SpanCollector;

 import com.github.kristofa.brave.http.DefaultSpanNameProvider;

 import com.github.kristofa.brave.http.HttpSpanCollector;

 import com.github.kristofa.brave.servlet.BraveServletFilter;

 @Configuration

 public class ZipkinConfig {

     @Bean

     public SpanCollector spanCollector() {

         HttpSpanCollector.Config spanConfig = HttpSpanCollector.Config.builder()

                                               .compressionEnabled(false)//默认false，span在transport之前是否会被gzipped。

                                               .connectTimeout(5000)//5s，默认10s

                                               .flushInterval(1)//1s

                                               .readTimeout(6000)//5s，默认60s

                                               .build();

         return HttpSpanCollector.create("http://localhost:9411",

                                         spanConfig,

                                         new EmptySpanCollectorMetricsHandler());

     }

     @Bean

     public Brave brave(SpanCollector spanCollector) {

         Brave.Builder builder = new Brave.Builder("asyn4 - service4 - 4");//指定serviceName

         builder.spanCollector(spanCollector);

         builder.traceSampler(Sampler.create(1));//采集率

         return builder.build();

     }

     @Bean

     public BraveServletFilter braveServletFilter(Brave brave) {

         /**

          * 设置sr、ss拦截器

          */

         return new BraveServletFilter(brave.serverRequestInterceptor(),

                                       brave.serverResponseInterceptor(),

                                       new DefaultSpanNameProvider());

     }

 }

说明：指定了serviceName："asyn4 - service4 - 4"

4.3、ZipkinAsyncController

 package com.xxx.service4.zipkin.brave.async;

 import org.springframework.web.bind.annotation.RequestMapping;

 import org.springframework.web.bind.annotation.RequestMethod;

 import org.springframework.web.bind.annotation.RestController;

 import io.swagger.annotations.Api;

 import io.swagger.annotations.ApiOperation;

 @Api("zipkin brave async api")

 @RestController

 @RequestMapping("/zipkin/async/service4")

 public class ZipkinAsyncController {

     @ApiOperation("trace第4步")

     @RequestMapping(value = "/test4", method = RequestMethod.GET)

     public String myboot3() {

         try {

             return "async - service4";

         } catch (Exception e) {

             e.printStackTrace();

             return "";

         }

     }

 }

二、测试结果

1、依赖关系图：

2、span时间消耗图

3、详情图

点击第4个span，查看详情：

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