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jPOS is an ISO-8583 based financial transaction library/framework that can be customized and extended in order to implement financial interchanges.
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/*
 * jPOS Project [http://jpos.org]
 * Copyright (C) 2000-2013 Alejandro P. Revilla
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 */

package org.jpos.q2.cli;

import org.jpos.q2.CLICommand;
import org.jpos.q2.CLIContext;
import org.jpos.transaction.TransactionManager;
import org.jpos.transaction.TransactionStatusEvent;
import org.jpos.transaction.TransactionStatusListener;
import org.jpos.util.NameRegistrar;

import java.io.PrintStream;
import java.util.Iterator;
import java.util.Map;

@SuppressWarnings("unused")
public class TMMON implements CLICommand, TransactionStatusListener
{
    PrintStream p;
    CLIContext cli;
    boolean ansi;

    public void exec(CLIContext cli, String[] args) throws Exception
    {
        this.p = cli.getOutputStream();
        this.cli = cli;
        this.ansi = cli.getConsoleReader().getTerminal().isANSISupported();
        if (args.length == 1)
        {
            usage(cli);
            return;
        }
        for (int i = 1; i < args.length; i++)
        {
            try
            {
                Object obj = NameRegistrar.get(args[i]);
                if (obj instanceof TransactionManager)
                {
                    ((TransactionManager) obj).addListener(this);
                }
                else
                {
                    cli.println("Object '" + args[i]
                                + "' is not an instance of TransactionManager (" + obj.toString() + ")");
                }
            }
            catch (NameRegistrar.NotFoundException e)
            {
                cli.println("TransactionManager '" + args[i] + "' not found -- ignored.");
            }
        }
        cli.getConsoleReader().readCharacter(new char[]{'q', 'Q'});
        for (int i = 1; i < args.length; i++)
        {
            try
            {
                Object obj = NameRegistrar.get(args[i]);
                if (obj instanceof TransactionManager)
                {
                    ((TransactionManager) obj).removeListener(this);
                }
            }
            catch (NameRegistrar.NotFoundException ignored) { }
        }
    }

    public void usage(CLIContext cli)
    {
        cli.println("Usage: tmmon [tm-name] [tm-name] ...");
        showTMs(cli);
    }

    private void showTMs(CLIContext cli)
    {
        NameRegistrar nr = NameRegistrar.getInstance();
        int maxw = 0;
        Iterator iter = NameRegistrar.getMap().entrySet().iterator();
        StringBuilder sb = new StringBuilder("available transaction managers:");
        while (iter.hasNext())
        {
            Map.Entry entry = (Map.Entry) iter.next();
            String key = (String) entry.getKey();
            if (entry.getValue() instanceof TransactionManager)
            {
                sb.append(' ');
                sb.append(key);
            }
        }
        cli.println(sb.toString());
    }

    public void update(TransactionStatusEvent e)
    {
        cli.println(e.toString());
    }
}