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// **********************************************************************
//
// Copyright (c) 2003-2015 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************

import Demo.*;

class ReapTask implements Runnable
{ 
    static class SessionProxyPair
    {
        SessionProxyPair(Demo.SessionPrx p, SessionI s)
        {
            proxy = p;
            session = s;
        }

        Demo.SessionPrx proxy;
        SessionI session;
    }

    @Override
    synchronized public void
    run()
    {
        java.util.Iterator<SessionProxyPair> p = _sessions.iterator();
        while(p.hasNext())
        {
            SessionProxyPair s = p.next();
            try
            {
                //
                // Session destruction may take time in a
                // real-world example. Therefore the current time
                // is computed for each iteration.
                //
                if((System.currentTimeMillis() - s.session.timestamp()) > _timeout)
                {
                    String name = s.proxy.getName();
                    s.proxy.destroy();
                    System.out.println("The session " + name + " has timed out.");
                    p.remove();
                }
            }
            catch(Ice.ObjectNotExistException e)
            {
                p.remove();
            }
        }
    }

    synchronized public void
    terminate()
    {
        _sessions.clear();
    }

    synchronized public void
    add(SessionPrx proxy, SessionI session)
    {
        _sessions.add(new SessionProxyPair(proxy, session));
    }

    private final long _timeout = 10 * 1000; // 10 seconds.
    private java.util.List<SessionProxyPair> _sessions = new java.util.LinkedList<SessionProxyPair>();
}