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// **********************************************************************
//
// Copyright (c) 2003-2014 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 java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import Demo.*;
import Ice.LocalException;
public class Client extends Ice.Application
{
class ShutdownHook extends Thread
{
@Override
public void
run()
{
try
{
communicator().destroy();
}
catch(Ice.LocalException ex)
{
ex.printStackTrace();
}
}
}
private static void
menu()
{
System.out.println(
"usage:\n" +
"t: start a task\n" +
"b: start a blocking task\n" +
"i: interrupt the blocking task\n" +
"s: shutdown server\n" +
"x: exit\n" +
"?: help\n");
}
@Override
public int
run(String[] args)
{
if(args.length > 0)
{
System.err.println(appName() + ": too many arguments");
return 1;
}
//
// Since this is an interactive demo we want to clear the
// Application installed interrupt callback and install our
// own shutdown hook.
//
setInterruptHook(new ShutdownHook());
final TaskManagerPrx taskManager = TaskManagerPrxHelper.checkedCast(communicator().propertyToProxy("TaskManager.Proxy"));
if(taskManager == null)
{
System.err.println("invalid proxy");
return 1;
}
menu();
java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(System.in));
ExecutorService executor = Executors.newFixedThreadPool(5);
List<Future<?> > futures = new ArrayList<Future<?> >();
int nextId = 0;
String line = null;
do
{
try
{
System.out.print("==> ");
System.out.flush();
line = in.readLine();
if(line == null)
{
break;
}
if(line.equals("t"))
{
final int id = nextId++;
taskManager.begin_run(id, new Callback_TaskManager_run()
{
@Override
public void response()
{
System.out.println("task " + id + " completed running");
}
@Override
public void exception(LocalException ex)
{
System.out.println("blocking task " + id + " failed");
ex.printStackTrace();
}
});
}
else if(line.equals("b"))
{
//
// Remove any completed tasks.
//
Iterator<Future<?> > iterator = futures.iterator();
while(iterator.hasNext()) {
Future<?> f = iterator.next();
if(f.isDone()) {
iterator.remove();
}
}
final int id = nextId++;
Future<?> future = executor.submit(new Runnable() {
@Override
public void
run()
{
try
{
taskManager.run(id);
System.out.println("task " + id + " completed running");
}
catch(Ice.OperationInterruptedException e)
{
System.out.println("blocking task " + id + " interrupted");
}
catch(Ice.Exception e)
{
System.out.println("blocking task " + id + " failed");
e.printStackTrace();
}
}
});
futures.add(future);
}
else if(line.equals("i"))
{
for(Future<?> f : futures)
{
f.cancel(true);
}
futures.clear();
}
else if(line.equals("s"))
{
taskManager.shutdown();
}
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"));
return 0;
}
public static void
main(String[] args)
{
Client app = new Client();
int status = app.main("Client", args, "config.client");
System.exit(status);
}
}
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