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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