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This project allows a user to interact with ESP services in a controlled manner. The API calls available under org.hpccsystems.ws.client.platform allow for a user to target ESP's across multiple environments running a range of hpccsystems-platform versions. There is no guarantee that if a user utilizes org.hpccsystems.ws.client.gen generated stub code from wsdl, that the calls will be backwards compatible with older hpccsystems-platform versions.

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/*******************************************************************************
 * Copyright (c) 2014 HPCC Systems. All rights reserved. This program and the accompanying materials are made available
 * under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: HPCC Systems - initial API and implementation
 ******************************************************************************/
package org.hpccsystems.ws.client.utils;

import java.util.Observable;

import org.apache.axis2.AxisFault;
import org.apache.axis2.client.Stub;

public abstract class DataSingleton extends Observable
{
    static final int MONITOR_SLEEP = 1000;

    Thread           monitorThread;

    protected DataSingleton()
    {
        monitorThread = null;
    }

    protected void monitor()
    {
        monitor(MONITOR_SLEEP);
    }

    synchronized void monitor(final int sleepTime)
    {
        if (isComplete())
        {
            return;
        }

        if (monitorThread == null || !monitorThread.isAlive())
        {
            monitorThread = new Thread(new Runnable() {
                private int timerTickCount = 0;

     
                public void run()
                {
                    while (!isComplete())
                    {
                        this.timerTickCount++;
                        if (this.timerTickCount == 1)
                        {
                            this.refresh(true);
                        }
                        else if (this.timerTickCount < 5 && this.timerTickCount % 1 == 0)
                        {
                            this.refresh();
                        }
                        else if (this.timerTickCount < 30 && this.timerTickCount % 5 == 0)
                        {
                            this.refresh();
                        }
                        else if (this.timerTickCount < 60 && this.timerTickCount % 10 == 0)
                        {
                            this.refresh();
                        }
                        else if (this.timerTickCount < 120 && this.timerTickCount % 30 == 0)
                        {
                            this.refresh(true);
                        }
                        else if (this.timerTickCount % 60 == 0)
                        {
                            this.refresh(true);
                        }
                        try
                        {
                            Thread.sleep(sleepTime);
                        }
                        catch (InterruptedException e)
                        {
                            e.printStackTrace();
                        }
                    }
                    monitorThread = null;
                    this.timerTickCount = 0;
                }

                void refresh()
                {
                    this.refresh(false);
                }

                void refresh(boolean full)
                {
                    if (countObservers() > 0)
                    {
                        if (full || isComplete())
                        {
                            fullRefresh();
                        }
                        else
                        {
                            fastRefresh();
                        }
                    }
                }
            });
            monitorThread.start();
        }
    }

    protected abstract boolean isComplete();

    protected abstract void fastRefresh();

    protected abstract void fullRefresh();

    @Override
    public abstract boolean equals(Object aThat);

    @Override
    public abstract int hashCode();
}