我有一个由Prometheus监控的Apache Camel应用程序。因此，我将Micrometer添加到我的POM中（请参阅Sping Boot Auto-Configuration），并将MicrometerRoutePolicyFactory添加到我的应用程序中（请参阅Using Micrometer Route Policy Factory）。但是度量CamelExchangesFailed_total并没有改变，尽管路由失败了。

来源

@SpringBootApplication
public class TestApplication {

  public static void main(String[] args) {
    SpringApplication.run(TestApplication.class, args);
  }

  @Bean
  public MicrometerRoutePolicyFactory micrometerRoutePolicyFactory() {
    return new MicrometerRoutePolicyFactory();
  }

  @Bean
  public EndpointRouteBuilder route() {
    return new EndpointRouteBuilder() {
      @Override
      public void configure() throws Exception {
        errorHandler(deadLetterChannel("log:dead"));
        from(timer("testTimer").repeatCount(1)).throwException(new RuntimeException());
      }
    };
  }
}

日志

INFO 5060 --- [  restartedMain] o.a.c.i.e.InternalRouteStartupManager    : Route: route1 started and consuming from: timer://testTimer
INFO 5060 --- [  restartedMain] o.a.c.impl.engine.AbstractCamelContext   : Total 1 routes, of which 1 are started
INFO 5060 --- [  restartedMain] o.a.c.impl.engine.AbstractCamelContext   : Apache Camel 3.5.0 (camel-1) started in 0.007 seconds
INFO 5060 --- [  restartedMain] test.TestApplication   : Started TestApplication in 6.626 seconds (JVM running for 7.503)
INFO 5060 --- [on(3)-127.0.0.1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
INFO 5060 --- [on(3)-127.0.0.1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
INFO 5060 --- [on(3)-127.0.0.1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 5 ms
INFO 5060 --- [mer://testTimer] dead                                     : Exchange[ExchangePattern: InOnly, BodyType: null, Body: [Body is null]]

度量

# HELP CamelExchangesFailed_total

# TYPE CamelExchangesFailed_total counter

CamelExchangesFailed_total{application="test",camelContext="camel-1",routeId="route1",serviceName="MicrometerRoutePolicyService",} 0.0

# HELP CamelExchangesSucceeded_total

# TYPE CamelExchangesSucceeded_total counter

CamelExchangesSucceeded_total{application="test",camelContext="camel-1",routeId="route1",serviceName="MicrometerRoutePolicyService",} 1.0

研究

• 如果我删除了自定义错误处理程序，则指标CamelExchangesFailed_total会增加，但随后会使用默认错误处理程序，出于某些原因，这是不希望的。
  问题

为什么CamelExchangesFailed_total度量没有增加？有没有办法用一个自定义的错误处理程序来计算所有失败的路由？