Auto-instrumentation with JMX Beans

[sarkisjad]

Hello,
I am trying to implement auto-instrumentation using the jmx-metrics
My aim is to emit a metric on a simple Java application for the gc metrics.
This is my rules file:

rules:
  - bean: java.lang:name=*,type=GarbageCollector
    metricAttribute:
      generation: param(name)
    mapping:
      LastGcInfo.duration:
        metric: my.own.last.gc.duration
        desc: my desc
        type: gauge
        unit: ms

I am looking for a way to add the process pid as an attribute to the datapoint attributes (not the resource attributes) of my.own.last.gc.duration.
Is there a way to do that?
I know that the PID attribute is present in the attributes of the bean java.lang.Runtime. Can we extract it from there maybe?

[laurit]

cc @PeterF778

[PeterF778]

Currently there's no way in jmx-metrics to combine data from two different MBeans.
As you mentioned, the pid is provided as part of the Resource. Perhaps it is possible to write a collector plugin which will put pid as another metric attribute.