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场景

        在使用Sleuth做链路跟踪时，默认情况下异步线程会断链，需要进行代码调整支持。

调整内容

方式一

使用@Async实现异步线程

• 开启异步线程池

@EnableAsync
@SpringBootApplication
public class LizzApplication {public static void main(String[] args) {SpringApplication.run(LizzApplication.class, args);}
}

• 异步线程实现

@Slf4j
@Service
public class SleuthExecutors {@Asyncpublic void go(){log.info("go");}
}

• 调用异步线程

@RestController
@Slf4j
public class LizzController {@AutowiredSleuthExecutors sleuthExecutors;    @GetMapping("/asyncSleuth")public void asyncSleuth() {sleuthExecutors.go();}
}

 

• 66cf4e9594b9f60c为父线程traceid，18a498dde65276ec为子线程traceid 

方式二

使用TraceRunnable

• 自定线程

@Slf4j
@Service
public class SleuthExecutors implements Runnable {@Overridepublic void run() {log.info("go");}
}

• 自定义线程池

@RestController
@Slf4j
public class LizzController { @AutowiredTracing tracing;public static final ExecutorService executorService = Executors.newFixedThreadPool(5);@GetMapping("/traceRunnable")public void traceRunnable() {log.info("traceRunnable");// 线程加入到tracing中Runnable traceRunnableFromTracer = this.tracing.currentTraceContext().wrap(sleuthExecutors);executorService.submit(traceRunnableFromTracer);}}

• 跨线程的同一个traceid