HotspotMBeanCassandraDaemon.java

package com.josnyder;

import java.lang.management.ManagementFactory;
import javax.management.InstanceAlreadyExistsException;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import org.apache.cassandra.service.CassandraDaemon;

class HotspotMBeanCassandraDaemon extends CassandraDaemon {
    protected void setup() {
        super.setup();

        Object runtimeMBean = null;
        try {
            runtimeMBean = Class.forName("sun.management.ManagementFactoryHelper")
                .getMethod("getHotspotRuntimeMBean")
                .invoke(null);
        } catch(Exception e) {
            System.err.println("Couldn't get mbean");
        }

        if(runtimeMBean != null) {
            MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
            try {
                mbs.registerMBean(runtimeMBean, new ObjectName("com.josnyder.hotspot:type=RuntimeMBean"));
            } catch(Exception e) {
                System.err.println("Couldn't register mbean");
            }
        }

    }
}