Question

我想在我的应用程序中启用自定义指标。为此，我使用Prometheus客户端库在我的应用程序中收集指标。

为了使这些度量标准可用于Prometheus，我在以下位置使用Prometheus JMX Exporter： https://github.com/prometheus/jmx_exporter

以下是我的MBean：

import io.prometheus.client.Counter;
import io.prometheus.client.Gauge;
import io.prometheus.client.Histogram;

public interface EmployeekpiMBean {

  public Counter getTotalRequest();

  public Gauge getInprogressRequests();

  public Histogram getRequestLatency();

  public double getCustomTotalRequestValue();

}

我注册我的MBean如下：

try {
        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        ObjectName mxbeanName = new ObjectName("com.sterlite.employee:type=Employeekpi");
        Employeekpi mxbean = new Employeekpi();
        mbs.registerMBean(mxbean, mxbeanName);
    } catch (Exception e) {
        System.out.println("Exception While Initializing MBean: " + e);
    }

启动服务器后，我通过调用以下API来验证指标： http://localhost:8080/metrics

我只能看到1个指标，也就是具有“ double”类型的指标。

# HELP com_sterlite_employee_Employeekpi_CustomTotalRequestValue Attribute exposed for management (com.sterlite.employee<type=Employeekpi><>CustomTotalRequestValue)
# TYPE com_sterlite_employee_Employeekpi_CustomTotalRequestValue untyped
com_sterlite_employee_Employeekpi_CustomTotalRequestValue 0.0

Counter，Gauge或Histogram之类的其他实际Prometheus数据类型不可用。

后来，我尝试将MBean转换为MXBean，但启动时会出现以下错误：

Caused by: javax.management.openmbean.OpenDataException: Can't map io.prometheus.client.Counter to an open data type
    at com.sun.jmx.mbeanserver.DefaultMXBeanMappingFactory.makeCompositeMapping(DefaultMXBeanMappingFactory.java:459)
    at com.sun.jmx.mbeanserver.DefaultMXBeanMappingFactory.makeMapping(DefaultMXBeanMappingFactory.java:293)
    at com.sun.jmx.mbeanserver.DefaultMXBeanMappingFactory.mappingForType(DefaultMXBeanMappingFactory.java:258)

请帮助我解决此问题。

谢谢。

将Prometheus KPI与Prometheus JMX Exporter集成

0 个答案: