上一篇写了《【分布式日志系统】springboot+zipkin+dubbo实现链路跟踪(上)》《【分布式日志系统】springboot+zipkin+dubbo实现链路跟踪(中)》,有兴趣的小伙伴可以往回翻翻,这一篇解决如何跟踪。
提示:可能不同的框架版本会导致有些地方不生效(如sleuth不支持apache版的dubbo),大家在集成的过程中有问题可以私信我,共同探讨。主框架版本如下:springboot 2.6.6、 dubbo 2.7.12、 zipkin 2.16.3、 brave 5.13.3 nacos-discovery-spring-boot-starter 0.2.10、 nacos-config-spring-boot-starter 0.2.10、
主要的代码均在basic-common的pom中,添加如下依赖:
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>io.zipkin.brave</groupId>
<artifactId>brave-instrumentation-dubbo</artifactId>
</dependency>
<dependency>
<groupId>io.zipkin.brave</groupId>
<artifactId>brave-spring-beans</artifactId>
</dependency>
<dependency>
<groupId>io.zipkin.brave</groupId>
<artifactId>brave-context-slf4j</artifactId>
</dependency>
<!-- tracing -->
<dependency>
<groupId>io.zipkin.reporter2</groupId>
<artifactId>zipkin-sender-okhttp3</artifactId>
</dependency>
<!-- tracing & mvc-->
<dependency>
<groupId>io.zipkin.brave</groupId>
<artifactId>brave-instrumentation-spring-webmvc</artifactId>
</dependency>
<!-- tracing & http-->
<dependency>
<groupId>io.zipkin.brave</groupId>
<artifactId>brave-instrumentation-httpclient</artifactId>
</dependency>
<dependency>
<groupId>io.zipkin.reporter2</groupId>
<artifactId>zipkin-sender-okhttp3</artifactId>
</dependency>
另外,需要定义一个配置类,来处理RPC的tracing,要不会不生效。
package com.wd.basic.common.support.trace;
import brave.CurrentSpanCustomizer;
import brave.SpanCustomizer;
import brave.Tracing;
import brave.context.slf4j.MDCScopeDecorator;
import brave.http.HttpTracing;
import brave.propagation.B3Propagation;
import brave.propagation.ExtraFieldPropagation;
import brave.propagation.ThreadLocalCurrentTraceContext;
import brave.rpc.RpcTracing;
import brave.sampler.Sampler;
import brave.servlet.TracingFilter;
import brave.spring.webmvc.SpanCustomizingAsyncHandlerInterceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import zipkin2.Span;
import zipkin2.codec.Encoding;
import zipkin2.reporter.AsyncReporter;
import zipkin2.reporter.Sender;
import zipkin2.reporter.okhttp3.OkHttpSender;
import javax.servlet.Filter;
@Configuration
@Import(SpanCustomizingAsyncHandlerInterceptor.class)
public class TracingConfig implements WebMvcConfigurer {
@Bean
Sender sender(@Value("${zipkin.base.url}") String url) {
return OkHttpSender.newBuilder()
.encoding(Encoding.PROTO3)
.endpoint(url)
.build();
}
/**
* Configuration for how to buffer spans into messages for Zipkin
*/
@Bean
@ConditionalOnBean(Sender.class)
AsyncReporter<Span> spanReporter(Sender sender) {
AsyncReporter.Builder builder = AsyncReporter.builder(sender);
builder.queuedMaxSpans(50000);
builder.queuedMaxBytes(104857600);
return builder.build();
}
/**
* Controls aspects of tracing such as the service name that shows up in the UI
*/
@Bean
Tracing tracing(@Value("${dubbo.application.name}") String applicationName, @Value("${zipkin.enable:false}") Boolean enable, @Autowired(required = false) AsyncReporter spanReporter) {
Tracing.Builder builder = Tracing.newBuilder()
.localServiceName(applicationName)
.propagationFactory(ExtraFieldPropagation.newFactory(B3Propagation.FACTORY, "user-name"))
.currentTraceContext(ThreadLocalCurrentTraceContext.newBuilder()
// puts trace IDs into logs
.addScopeDecorator(MDCScopeDecorator.create())
.build()
);
if (enable) {
builder.spanReporter(spanReporter);
builder.sampler(Sampler.ALWAYS_SAMPLE);
} else {
builder.sampler(Sampler.NEVER_SAMPLE);
}
return builder.build();
}
@Bean
SpanCustomizer spanCustomizer(Tracing tracing) {
return CurrentSpanCustomizer.create(tracing);
}
/**
* Decides how to name and tag spans. By default they are named the same as the http method
*/
@Bean
HttpTracing httpTracing(Tracing tracing) {
return HttpTracing.create(tracing);
}
@Bean
RpcTracing rpcTracing(Tracing tracing) {
return RpcTracing.create(tracing);
}
/**
* Creates server spans for http requests
*/
@Bean
Filter tracingFilter(HttpTracing httpTracing) {
return TracingFilter.create(httpTracing);
}
@Autowired
SpanCustomizingAsyncHandlerInterceptor webMvcTracingCustomizer;
/**
* Decorates server spans with application-defined web tags
*/
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(webMvcTracingCustomizer);
}
}
前提:所有工程均依赖basic-common。 dubbo工程的provider和consumer均添加如下配置(请注意必须添加dubbo.consumer.filter和dubbo.provider.filter)
dubbo:
application:
name: foundationRpc #服务名称
consumer:
timeout: 3000 #消费超时时间
retries: 1 #重试次数
filter: tracing # 请注意必须添加该配置
check: false
provider:
filter: tracing # 请注意必须添加该配置
protocol:
name: dubbo
zipkin:
enable: true
base:
url: http://127.0.0.1:9411/api/v2/spans
设计如下调用关系:
server定义http入口:
@GetMapping("tracing")
public String exec(){
log.info("come in tracing");
return rpcDemoService.tracing();
}
rpcDemoService为server中定义的service,实现如下:
package com.wd.basic.portal.server.modular.demo.service.impl;
import cn.hutool.core.util.StrUtil;
import com.wd.basic.foundation.rpc.test.service.DemoRpcService;
import com.wd.basic.portal.rpc.IDemoService;
import com.wd.basic.portal.rpc.ITraceDemoService;
import com.wd.basic.portal.server.modular.demo.service.RpcDemoService;
import lombok.extern.slf4j.Slf4j;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.stereotype.Service;
/**
* rpc演示服务impl
*
* @author 小尘哥
* @date 2022/04/14
*/
@Slf4j
@Service
public class RpcDemoServiceImpl implements RpcDemoService {
@DubboReference(interfaceClass = IDemoService.class, version = "2.0")
private IDemoService demoService2;
@DubboReference(interfaceClass = IDemoService.class, version = "1.0")
private IDemoService demoService1;
@DubboReference(interfaceClass = ITraceDemoService.class, version = "1.0")
private ITraceDemoService traceDemoService;
@DubboReference(interfaceClass = DemoRpcService.class, version = "1.0")
private DemoRpcService demoRpcService;
@Override
public String tracing() {
log.info("come in exec service");
String rpc2 = demoService2.testRpc();
return StrUtil.join(",", rpc2);
}
}
IDemoService 定义在portal-api中,实现如下
package com.wd.basic.portal.rpc.impl;
import com.wd.basic.foundation.rpc.test.service.DemoRpcService;
import com.wd.basic.portal.rpc.IDemoService;
import lombok.extern.slf4j.Slf4j;
import org.apache.dubbo.config.annotation.DubboReference;
import org.apache.dubbo.config.annotation.DubboService;
/**
* 演示服务impl
*
* @author 小尘哥
* @date 2022/03/16
*/
@Slf4j
@DubboService(interfaceClass = IDemoService.class,version = "2.0")
public class DemoServiceV2Impl implements IDemoService {
@DubboReference(interfaceClass = DemoRpcService.class, version = "1.0")
private DemoRpcService demoRpcService;
@Override
public String testRpc() {
log.info("来自统一门户 RPC 测试");
demoRpcService.testRpc();
return "调用到了rpc服务 version 2.0.0";
}
}
DemoRpcService 定义在foundation-api中,实现如下:
package com.wd.basic.foundation.rpc.test.service.impl;
import com.wd.basic.foundation.rpc.test.service.DemoRpcService;
import lombok.extern.slf4j.Slf4j;
import org.apache.dubbo.config.annotation.DubboService;
/**
* test Rpc服务
* @author 上官婉儿
*/
@Slf4j
@DubboService(interfaceClass = DemoRpcService.class,version = "1.0")
public class DemoRpcServiceImpl implements DemoRpcService {
@Override
public String testRpc() {
log.info("来自基础服务 RPC 测试");
return "RPC服务! from foundation";
}
}
七、日志配置
临门一脚了,以上都配置好了,但是哪里能看到效果呢?肯定是需要从日志来跟踪,我们采用springboot推荐的logback来记录日志,请注意日志记录格式,添加了部分内容“【%X{traceId},%X{spanId},%X{parentId}】”,完整配置如下:
<?xml version="1.0" encoding="UTF-8"?>
<!-- 日志级别从低到高分为TRACE < DEBUG < INFO < WARN < ERROR < FATAL,如果设置为WARN,则低于WARN的信息都不会输出 -->
<!-- scan:当此属性设置为true时,配置文件如果发生改变,将会被重新加载,默认值为true -->
<!-- scanPeriod:设置监测配置文件是否有修改的时间间隔,如果没有给出时间单位,默认单位是毫秒。当scan为true时,此属性生效。默认的时间间隔为1分钟。 -->
<!-- debug:当此属性设置为true时,将打印出logback内部日志信息,实时查看logback运行状态。默认值为false。 -->
<configuration scan="true" scanPeriod="10 seconds">
<!-- <include resource="org/springframework/boot/logging/logback/base.xml"
/> -->
<contextName>Logback For Basic Platform</contextName>
<!-- name的值是变量的名称,value的值时变量定义的值。通过定义的值会被插入到logger上下文中。定义变量后,可以使“${}”来使用变量。 -->
<!-- 定义日志文件 输入位置 -->
<springProperty scope="context" name="logDir" source="custom.log.dir" defaultValue="D:/logback"/>
<!-- 定义日志文件 输出级别 -->
<springProperty scope="context" name="logLevel" source="custom.log.level" defaultValue="info"/>
<!-- 日志最大的历史 30天 -->
<springProperty scope="context" name="logMaxHistory" source="custom.log.max-history" defaultValue="180"/>
<!-- 控制台输出日志 -->
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} 【%X{traceId},%X{spanId},%X{parentId}】 [%thread] %-5level %logger-%msg%n %ex{5}</pattern>
<charset class="java.nio.charset.Charset">UTF-8</charset>
</encoder>
</appender>
<!--文件日志, 按照每天生成日志文件 -->
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
<!--日志文件输出的文件名-->
<fileNamePattern>${logDir}/%d{yyyy-MM-dd}/pf.%i.log.zip</fileNamePattern>
<maxFileSize>50MB</maxFileSize> <!-- 日志文件过大会使的编辑器打开非常慢,因此设置日志最大50MB -->
<!--日志文件保留天数-->
<maxHistory>${logMaxHistory}</maxHistory>
<totalSizeCap>10GB</totalSizeCap> <!-- 总日志大小 -->
</rollingPolicy>
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<!--格式化输出:%d表示日期,%thread表示线程名,%-5level:级别从左显示5个字符宽度%msg:日志消息,%n是换行符-->
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} 【%X{traceId},%X{spanId},%X{parentId}】 [%thread] %-5level %logger-%msg%n %ex{5}</pattern>
</encoder>
</appender>
<!-- 异步输出 -->
<appender name="dayLogAsyncAppender" class="ch.qos.logback.classic.AsyncAppender">
<includeCallerData>true</includeCallerData>
<!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
<discardingThreshold>0</discardingThreshold>
<!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
<queueSize>512</queueSize>
<appender-ref ref="FILE"/>
</appender>
<!--专为 spring 定制
-->
<logger name="org.springframework" level="${logLevel}"/>
<!-- root级别 DEBUG -->
<root level="${logLevel}">
<!-- 控制台输出 -->
<appender-ref ref="STDOUT" />
<!-- 文件输出 -->
<appender-ref ref="dayLogAsyncAppender" />
</root>
</configuration>
来自server的日志
2022-04-26 16:44:25.817 【2926aa52265ad112,2926aa52265ad112,】 [http-nio-8080-exec-1] INFO com.wd.basic.portal.server.modular.demo.controller.RpcDemoController-come in tracing
2022-04-26 16:44:25.826 【2926aa52265ad112,2926aa52265ad112,】 [http-nio-8080-exec-1] INFO com.wd.basic.portal.server.modular.demo.service.impl.RpcDemoServiceImpl-come in exec service
来自portal-api的日志
2022-04-26 16:44:25.882 【2926aa52265ad112,6a4da6311934ab65,2926aa52265ad112】 [DubboServerHandler-10.1.252.224:20881-thread-5] INFO com.wd.basic.portal.rpc.impl.DemoServiceV2Impl-来自统一门户 RPC 测试
来自foundation-api的日志
2022-04-26 16:44:25.926 【2926aa52265ad112,53dbfb344223ef50,6a4da6311934ab65】 [DubboServerHandler-10.1.252.224:20880-thread-3] INFO com.wd.basic.foundation.rpc.test.service.impl.DemoRpcServiceImpl-来自基础服务 RPC 测试
提取三部分日志中括号中的内容:
统一门户:traceId = 2926aa52265ad112,spanId=2926aa52265ad112,parentId=’’;
统一门户RPC服务:traceId = 2926aa52265ad112,spanId=6a4da6311934ab65,parentId=2926aa52265ad112;
基础服务RPC服务:traceId = 2926aa52265ad112,spanId=53dbfb344223ef50,parentId=6a4da6311934ab65;
说明:
综上,和测试开始时的设计逻辑一致,由traceId串联整个请求过程,由spanId和parentId构建上下游调用关系,完成dubbo服务之间调用的链路跟踪。