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// **********************************************************************
//
// Copyright (c) 2003-2007 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.*;
public class Client extends Ice.Application
{
class ShutdownHook extends Thread
{
public void
run()
{
cleanup();
try
{
communicator().destroy();
}
catch(Ice.LocalException ex)
{
ex.printStackTrace();
}
}
}
static private class SessionKeepAliveThread extends Thread
{
SessionKeepAliveThread(IceGrid.SessionPrx session, long timeout)
{
_session = session;
_timeout = timeout;
_terminated = false;
}
synchronized public void
run()
{
while(!_terminated)
{
try
{
wait(_timeout);
}
catch(InterruptedException e)
{
}
if(_terminated)
{
break;
}
try
{
_session.keepAlive();
}
catch(Ice.LocalException ex)
{
break;
}
}
}
synchronized private void
terminate()
{
_terminated = true;
notify();
}
final private IceGrid.SessionPrx _session;
final private long _timeout;
private boolean _terminated;
}
private void
menu()
{
System.out.println(
"usage:\n" +
"t: send greeting\n" +
"x: exit\n" +
"?: help\n");
}
public int
run(String[] args)
{
//
// Since this is an interactive demo we want to clear the
// Application installed interrupt callback and install our
// own shutdown hook.
//
setInterruptHook(new ShutdownHook());
int status = 0;
IceGrid.RegistryPrx registry =
IceGrid.RegistryPrxHelper.checkedCast(communicator().stringToProxy("DemoIceGrid/Registry"));
if(registry == null)
{
System.err.println("could not contact registry");
return 1;
}
java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(System.in));
while(true)
{
System.out.println("This demo accepts any user-id / password combination.");
try
{
String id;
System.out.print("user id: ");
System.out.flush();
id = in.readLine();
String pw;
System.out.print("password: ");
System.out.flush();
pw = in.readLine();
try
{
synchronized(this)
{
_session = registry.createSession(id, pw);
}
break;
}
catch(IceGrid.PermissionDeniedException ex)
{
System.out.println("permission denied:\n" + ex.reason);
}
}
catch(java.io.IOException ex)
{
ex.printStackTrace();
}
}
synchronized(this)
{
_keepAlive = new SessionKeepAliveThread(_session, registry.getSessionTimeout() / 2);
_keepAlive.start();
}
try
{
HelloPrx hello = HelloPrxHelper.checkedCast(
_session.allocateObjectById(communicator().stringToIdentity("hello")));
menu();
String line = null;
do
{
try
{
System.out.print("==> ");
System.out.flush();
line = in.readLine();
if(line == null)
{
break;
}
if(line.equals("t"))
{
hello.sayHello();
}
else if(line.equals("x"))
{
// Nothing to do
}
else if(line.equals("?"))
{
menu();
}
else
{
System.out.println("unknown command `" + line + "'");
menu();
}
}
catch(java.io.IOException ex)
{
ex.printStackTrace();
}
catch(Ice.LocalException ex)
{
ex.printStackTrace();
}
}
while(!line.equals("x"));
}
catch(IceGrid.AllocationException ex)
{
System.err.println("could not allocate object: " + ex.reason);
status = 1;
}
catch(IceGrid.ObjectNotRegisteredException ex)
{
System.err.println("object not registered with registry");
status = 1;
}
catch(Exception ex)
{
System.err.println("expected exception: " + ex);
status = 1;
}
cleanup();
return status;
}
synchronized void
cleanup()
{
//
// Destroy the keepAlive thread and the sesion object otherwise
// the session will be kept allocated until the timeout occurs.
// Destroying the session will release all allocated objects.
//
if(_keepAlive != null)
{
_keepAlive.terminate();
try
{
_keepAlive.join();
}
catch(InterruptedException e)
{
}
_keepAlive = null;
}
if(_session != null)
{
_session.destroy();
_session = null;
}
}
public static void
main(String[] args)
{
Client app = new Client();
int status = app.main("Client", args, "config.client");
System.exit(status);
}
SessionKeepAliveThread _keepAlive;
IceGrid.SessionPrx _session;
}
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