package jp.gr.java_conf.skrb.game.trivia.mserver;

import javax.management.InstanceNotFoundException;
import javax.management.MalformedObjectNameException;
import javax.management.Notification;
import javax.management.NotificationListener;
import javax.management.ObjectName;
import javax.management.monitor.CounterMonitor;
import javax.management.monitor.MonitorNotification;

public class TriviaMonitorStarter extends TriviaStandardMBeanStarter {

    private CounterMonitor counterMonitor;
    private static final String MONITOR_NAME = "MBean:name=CounterMonitor";

    public TriviaMonitorStarter() {
        super();
        initMonitor();

        NotificationListener listener = new NotificationListener() {
                public void handleNotification(Notification notification, Object handback) {
                    System.out.println("Received notification: " + notification);

                    MonitorNotification mNotification = (MonitorNotification)notification;
                    System.out.println("MBean: " + mNotification.getObservedObject());
                    System.out.println("Attribute: " + mNotification.getObservedAttribute());
                    System.out.println("Trigger: " + mNotification.getTrigger());
                    System.out.println("Gauge: " + mNotification.getDerivedGauge());
                    System.out.println();
                }
            };
            
        try {
            server.addNotificationListener(new ObjectName(MONITOR_NAME), listener, null, null);
        } catch (MalformedObjectNameException ex) {
            ex.printStackTrace();
        } catch(InstanceNotFoundException ex) {
            ex.printStackTrace();
        }
    }
    
    private void initMonitor() {
        counterMonitor = new CounterMonitor();

        try {
            registerMBean(counterMonitor, MONITOR_NAME);

            ObjectName objectName = new ObjectName(TRIVIA_MBEAN_NAME);

            counterMonitor.addObservedObject(objectName);
            counterMonitor.setObservedAttribute("TotalCount");
            counterMonitor.setNotify(true);
            counterMonitor.setInitThreshold(20);
            counterMonitor.setOffset(20);
            counterMonitor.setGranularityPeriod(100L);

            counterMonitor.start();
        } catch (MalformedObjectNameException ex) {
            ex.printStackTrace();
        }
    }

    public static void main(String[] args) {
        new TriviaMonitorStarter();
    }
}