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//******************************************************************************
//
// File: JobSchedulerTest.java
// Package: edu.rit.pj.cluster.test
// Unit: Class edu.rit.pj.cluster.test.JobSchedulerTest
//
// This Java source file is copyright (C) 2008 by Alan Kaminsky. All rights
// reserved. For further information, contact the author, Alan Kaminsky, at
// ark@cs.rit.edu.
//
// This Java source file is part of the Parallel Java Library ("PJ"). PJ is free
// software; you can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// PJ is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
// Linking this library statically or dynamically with other modules is making a
// combined work based on this library. Thus, the terms and conditions of the
// GNU General Public License cover the whole combination.
//
// As a special exception, the copyright holders of this library give you
// permission to link this library with independent modules to produce an
// executable, regardless of the license terms of these independent modules, and
// to copy and distribute the resulting executable under terms of your choice,
// provided that you also meet, for each linked independent module, the terms
// and conditions of the license of that module. An independent module is a
// module which is not derived from or based on this library. If you modify this
// library, you may extend this exception to your version of the library, but
// you are not obligated to do so. If you do not wish to do so, delete this
// exception statement from your version.
//
// A copy of the GNU General Public License is provided in the file gpl.txt. You
// may also obtain a copy of the GNU General Public License on the World Wide
// Web at http://www.gnu.org/licenses/gpl.html.
//
//******************************************************************************
package edu.rit.pj.cluster.test;
import edu.rit.mp.Channel;
import edu.rit.mp.ChannelGroup;
import edu.rit.pj.cluster.JobSchedulerProxy;
import edu.rit.pj.cluster.JobSchedulerRef;
import java.net.InetSocketAddress;
import java.util.Scanner;
/**
* Class JobSchedulerTest is a unit test main program for class {@linkplain
* edu.rit.pj.cluster.JobScheduler}. Class JobSchedulerTest mimics a job
* frontend process. It lets you send messages to a Job Scheduler process by
* typing commands on the console. It displays messages from the Job Scheduler
* process on the console.
* <P>
* Usage: java edu.rit.pj.cluster.test.JobSchedulerTest <I>host</I> <I>port</I>
* <BR><I>host</I> = Job Scheduler process host name
* <BR><I>port</I> = Job Scheduler process port number
*
* @author Alan Kaminsky
* @version 21-May-2008
*/
public class JobSchedulerTest
{
// Prevent construction.
private JobSchedulerTest()
{
}
// Unit test main program.
/**
* Unit test main program.
*/
public static void main
(String[] args)
throws Exception
{
// Parse command line arguments.
if (args.length != 2) usage();
String host = args[0];
int port = Integer.parseInt (args[1]);
// Set up proxy for Job Scheduler.
ChannelGroup channelgroup = new ChannelGroup();
Channel channel =
channelgroup.connect (new InetSocketAddress (host, port));
JobSchedulerRef jobscheduler =
new JobSchedulerProxy (channelgroup, channel);
// Set up stub for Job Frontend.
JobFrontendStub jobfrontend = new JobFrontendStub (channelgroup);
jobfrontend.start();
// Read Job Scheduler commands from the standard input.
Scanner scanner = new Scanner (System.in);
for (;;)
{
String line = scanner.nextLine();
Scanner linescanner = new Scanner (line);
String command = linescanner.next();
if (command.equals ("backendFailed"))
{
String name = linescanner.next();
jobscheduler.backendFailed (jobfrontend, name);
}
else if (command.equals ("cancelJob"))
{
String errmsg = linescanner.next();
jobscheduler.cancelJob (jobfrontend, errmsg);
}
else if (command.equals ("jobFinished"))
{
jobscheduler.jobFinished (jobfrontend);
}
else if (command.equals ("renewLease"))
{
jobscheduler.renewLease (jobfrontend);
}
else if (command.equals ("requestJob"))
{
String username = linescanner.next();
int Nn = linescanner.nextInt();
int Np = linescanner.nextInt();
int Nt = linescanner.nextInt();
jobscheduler.requestJob (jobfrontend, username, Nn, Np, Nt);
}
else if (command.equals ("close"))
{
jobscheduler.close();
channelgroup.close();
System.exit (0);
}
else
{
commands();
}
}
}
// Hidden operations.
/**
* Print a usage message and exit.
*/
private static void usage()
{
System.err.println ("Usage: java edu.rit.pj.cluster.test.JobSchedulerTest <host> <port>");
System.err.println ("<host> = Job Scheduler process host name");
System.err.println ("<port> = Job Scheduler process port number");
System.exit (1);
}
/**
* Print list of commands.
*/
private static void commands()
{
System.out.println ("requestJob <username> <Nn> <Np> <Nt>");
System.out.println ("renewLease");
System.out.println ("jobFinished");
System.out.println ("cancelJob <errmsg>");
System.out.println ("backendFailed <name>");
System.out.println ("close");
}
}
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