java - 执行器/指标端点不包括http.server.requests

Question

根据spring boot执行器的文档

Auto-configuration enables the instrumentation of requests handled by Spring MVC. When management.metrics.web.server.auto-time-requests is true, this instrumentation occurs for all requests. Alternatively, when set to false, you can enable instrumentation by adding @Timed

还有
By default, metrics are generated with the name, http.server.requests

当我访问/metrics 端点时，我得到

{
  "mem": 405105,
  "mem.free": 150352,
  "processors": 8,
  "instance.uptime": 440055,
  "uptime": 455888,
  "systemload.average": 1.904296875,
  "heap.committed": 315392,
  "heap.init": 262144,
  "heap.used": 164015,
  "heap": 4194304,
  "nonheap.committed": 92800,
  "nonheap.init": 4992,
  "nonheap.used": 89714,
  "nonheap": 0,
  "threads.peak": 64,
  "threads.daemon": 43,
  "threads.totalStarted": 95,
  "threads": 46,
  "classes": 12459,
  "classes.loaded": 12459,
  "classes.unloaded": 0,
  "gc.g1_young_generation.count": 12,
  "gc.g1_young_generation.time": 127,
  "gc.g1_old_generation.count": 0,
  "gc.g1_old_generation.time": 0,
  "httpsessions.max": -1,
  "httpsessions.active": 0,
  "datasource.primary.active": 0,
  "datasource.primary.usage": 0.0,
  "gauge.response.example.users": 2.0,
  "counter.status.200.example.users": 5
}

所以 http.server.requests 不存在。 counter.status.200.example 类型显示了通过我的应用程序的请求，但它们是按端点分开的。我需要整个应用程序的整体。我尝试禁用 management.metrics.web.server.auto-time-requests并添加 @Timed到端点，但这并没有那么有效。结果和上面的一样。

有谁知道如何显示对应用程序提出的总体请求？预先感谢您。

*编辑

当我添加 compile('io.micrometer:micrometer-registry-prometheus:latest.release')我收到以下错误

Parameter 0 of method prometheusEndpointFix in PrometheusEndpointConfiguration required a bean of type 'PrometheusEndpoint' that could not be found.

即使 @Bean 在那里..

@Configuration
class PrometheusEndpointConfiguration {

  @Bean
  public PrometheusEndpoint prometheusEndpoint() {
    return new PrometheusEndpoint(CollectorRegistry.defaultRegistry);
  }
...
}

Answer 1

其中一个问题是使用执行器并遵循 spring boot 2.2.6 的指南时我注意到，如果到目前为止没有发生任何请求，http.server.requests 将不会显示在指标列表中。发出第一个 REST 请求后，http 指标变得可用。