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package com.sun.enterprise.iiop;

import java.util.Iterator;

import javax.management.j2ee.statistics.CountStatistic;
import javax.management.j2ee.statistics.BoundedRangeStatistic;
import javax.management.j2ee.statistics.RangeStatistic;

import com.sun.enterprise.admin.monitor.stats.BoundedRangeStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.CountStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.OrbConnectionManagerStats;
import com.sun.enterprise.admin.monitor.stats.MutableCountStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.MutableBoundedRangeStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.StatisticImpl;

import com.sun.corba.ee.spi.monitoring.MonitoringConstants;
import com.sun.corba.ee.spi.monitoring.MonitoringManager;
import com.sun.corba.ee.spi.monitoring.MonitoredObject;

/**
 * This is the implementation for the OrbConnectionManagerStats
 * and provides the implementation required to get the statistics
 * for an orb connection
 *
 * @author Pramod Gopinath
 */

public class OrbConnectionManagerStatsImpl
extends ORBCommonStatsImpl
implements OrbConnectionManagerStats
{

    private MonitoredObject connection;
    private String          connectionName;

    private static String   stringTotalConnections = 
        MonitoringConstants.CONNECTION_TOTAL_NUMBER_OF_CONNECTIONS;
    private static String   stringIdleConnections = 
        MonitoringConstants.CONNECTION_NUMBER_OF_IDLE_CONNECTIONS;
    private static String   stringBusyConnections = 
        MonitoringConstants.CONNECTION_NUMBER_OF_BUSY_CONNECTIONS;

    private MutableBoundedRangeStatisticImpl totalConnections;
    private MutableCountStatisticImpl        idleConnections;
    private MutableCountStatisticImpl        busyConnections;


    public OrbConnectionManagerStatsImpl( MonitoredObject connectionNode ) {
        this.connection     = connectionNode; 
        this.connectionName = connection.getName();

        initializeStats();
    }

    private void initializeStats() {
    	super.initialize(
            "com.sun.enterprise.admin.monitor.stats.OrbConnectionManagerStats");

        final long time = System.currentTimeMillis();

        totalConnections = 
            new MutableBoundedRangeStatisticImpl(
                new BoundedRangeStatisticImpl( 0, 0, 0, 
                    java.lang.Long.MAX_VALUE, 0,
                    "TotalConnections", "count",
                    connection.getAttribute( stringTotalConnections ).
                    getAttributeInfo( ).getDescription(), 
                    time, time ));

        idleConnections = 
            new MutableCountStatisticImpl(
                new CountStatisticImpl( 
                    "ConnectionsIdle", "count", 
                    connection.getAttribute( stringIdleConnections ).
                    getAttributeInfo( ).getDescription() ));

        busyConnections = 
            new MutableCountStatisticImpl(
                new CountStatisticImpl( 
                    "ConnectionsInUse", "count", 
                    connection.getAttribute( stringBusyConnections ).
                    getAttributeInfo( ).getDescription() ));
    }

    public BoundedRangeStatistic getTotalConnections() {

        long totalNumberOfConnections = ((Long) connection.getAttribute( 
            stringTotalConnections ).getValue()).longValue();

        totalConnections.setCount( totalNumberOfConnections );

        return (BoundedRangeStatistic) totalConnections.modifiableView();
    }


    public CountStatistic getConnectionsIdle() {

        long numberIdleConnections = ((Long) connection.getAttribute( 
	    stringIdleConnections ).getValue()).longValue();


        idleConnections.setCount( numberIdleConnections );

        return (CountStatistic) idleConnections.modifiableView();
    }

            
    public CountStatistic getConnectionsInUse() {

        long numberBusyConnections = ((Long) connection.getAttribute( 
	    stringBusyConnections ).getValue()).longValue();

        busyConnections.setCount( numberBusyConnections );

        return (CountStatistic) busyConnections.modifiableView();
    }


} //OrbConnectionManagerStatsImpl{ }