使用Sleuth怎么在线程之间传递信息,相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。
public class LazyTraceExecutor implements java.util.concurrent.Executor { private static final Log log = LogFactory.getLog(MethodHandles.lookup().lookupClass()); private Tracer tracer; private final BeanFactory beanFactory; private final Executor delegate; private TraceKeys traceKeys; private SpanNamer spanNamer; public LazyTraceExecutor(BeanFactory beanFactory, Executor delegate) { this.beanFactory = beanFactory; this.delegate = delegate; } @Override public void execute(Runnable command) { if (this.tracer == null) { try { this.tracer = this.beanFactory.getBean(Tracer.class); } catch (NoSuchBeanDefinitionException e) { this.delegate.execute(command); return; } } this.delegate.execute(new SpanContinuingTraceRunnable(this.tracer, traceKeys(), spanNamer(), command)); } }
使用方式
@Configuration public class MyConfiguration { @Autowired BeanFactory beanFactory; @Bean public Executor executor() { ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor(); // CUSTOMIZE HERE executor.setCorePoolSize(7); executor.setMaxPoolSize(42); executor.setQueueCapacity(11); executor.setThreadNamePrefix("MyExecutor-"); // DON'T FORGET TO INITIALIZE executor.initialize(); return new LazyTraceExecutor(this.beanFactory, executor); } }
所以它能在线程之间传递traceId并不稀奇,因为它根本就是要你使用它的多线程工具。
一般来说,每个线程一个副本,我们都是用ThreaLocal。可是,如果你想要该线程和它的子线程都能读这个副本,那就可以用InheritableThreadLocal了。
用法很简单Demo:
private static final ThreadLocal<String> sessionInfoHolder1 = new ThreadLocal<String>(); private static final ThreadLocal<String> sessionInfoHolder2 = new InheritableThreadLocal<String>();
看完上述内容,你们掌握使用Sleuth怎么在线程之间传递信息的方法了吗?如果还想学到更多技能或想了解更多相关内容,欢迎关注亿速云行业资讯频道,感谢各位的阅读!
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