测微计@在Spring靴中定时Rest方法和普罗米修斯误差

Question

我试图用测微计的@定时注释从我的Spring Boot应用程序向普罗米修斯发送数据，我看到了奇怪的行为。我在普罗米修斯（prometheus）中看到了我的方法的数据，但我也看到它在某些情况下失败了，下面是个例外。我包括了必要的库，并按照Spring Boot配置说明添加了测微计@定时注释。在构造度量键时，感觉就像Spring靴/测微计bug。我的定时注释非常简单：

    @GetMapping(value = {"/pageable"}, produces = MediaType.APPLICATION_JSON_VALUE)
    @Timed("employees.get.pageable")
    public Page<Employee> all(@SortDefault(sort = "id", direction = Sort.Direction.ASC) Pageable p) {
        return (Page<Employee>) employeeRepository.findAll(p);
    }

你知道我做错了什么吗？我很乐意用额外的配置来回应，但不想将我的整个项目粘贴到这里。堆栈跟踪：

2020-01-21 18:53:40.559 ERROR 1 --- [nio-8080-exec-8] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception
java.lang.IllegalArgumentException: Prometheus requires that all meters with the same name have the same set of tag keys. There is already an existing meter named 'companies_get_single_seconds' containing tag keys [class, exception, method]. The meter you are attempting to register has keys [exception, method, outcome, status, uri].
    at io.micrometer.prometheus.PrometheusMeterRegistry.lambda$collectorByName$9(PrometheusMeterRegistry.java:382) ~[micrometer-registry-prometheus-1.3.2.jar!/:1.3.2]
    at java.base/java.util.concurrent.ConcurrentHashMap.compute(ConcurrentHashMap.java:1932) ~[na:na]
    at io.micrometer.prometheus.PrometheusMeterRegistry.collectorByName(PrometheusMeterRegistry.java:369) ~[micrometer-registry-prometheus-1.3.2.jar!/:1.3.2]
    at io.micrometer.prometheus.PrometheusMeterRegistry.newTimer(PrometheusMeterRegistry.java:175) ~[micrometer-registry-prometheus-1.3.2.jar!/:1.3.2]
    at io.micrometer.core.instrument.MeterRegistry.lambda$timer$2(MeterRegistry.java:270) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.MeterRegistry.getOrCreateMeter(MeterRegistry.java:575) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.MeterRegistry.registerMeterIfNecessary(MeterRegistry.java:528) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.MeterRegistry.timer(MeterRegistry.java:268) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.Timer$Builder.register(Timer.java:464) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.composite.CompositeTimer.registerNewMeter(CompositeTimer.java:140) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.composite.CompositeTimer.registerNewMeter(CompositeTimer.java:31) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.composite.AbstractCompositeMeter.add(AbstractCompositeMeter.java:66) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na]
    at java.base/java.util.Collections$SetFromMap.forEach(Collections.java:5581) ~[na:na]
    at io.micrometer.core.instrument.composite.CompositeMeterRegistry.lambda$null$0(CompositeMeterRegistry.java:65) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.composite.CompositeMeterRegistry.lock(CompositeMeterRegistry.java:184) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.composite.CompositeMeterRegistry.lambda$new$1(CompositeMeterRegistry.java:65) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.MeterRegistry.getOrCreateMeter(MeterRegistry.java:585) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.MeterRegistry.registerMeterIfNecessary(MeterRegistry.java:528) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.MeterRegistry.timer(MeterRegistry.java:268) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at io.micrometer.core.instrument.Timer$Builder.register(Timer.java:464) ~[micrometer-core-1.1.7.jar!/:1.1.7]
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.stop(WebMvcMetricsFilter.java:180) ~[spring-boot-actuator-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.record(WebMvcMetricsFilter.java:174) ~[spring-boot-actuator-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:130) ~[spring-boot-actuator-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:104) ~[spring-boot-actuator-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.1.10.RELEASE.jar!/:5.1.10.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.26.jar!/:9.0.26]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.26.jar!/:9.0.26]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.1.10.RELEASE.jar!/:5.1.10.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.1.10.RELEASE.jar!/:5.1.10.RELEASE]

Answer 1

使用spring boot 2.0.2时也存在同样的问题。释放。遵循比尔·菲弗的回答，并将其添加到我的pom中，解决了这个问题。

html lang-html prettyprint-override"><dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

Answer 2

大多数关于带测微计的Spring Boot执行器计时器度量的帖子都显示添加Spring Boot aop libs并在配置中使用TimedAspect bean。我从配置中删除了TimedAspect，从依赖项中删除了spring boot starter aop，但保留了@Timed注释，问题就解决了。我假设（不确定）Spring和测微计都使用不同的标记键注册相同的度量。通过这个设置，我可以在普罗米修斯获得我的自定义指标，没有任何例外。

将此标记为已回答，但希望了解此操作的原因。