org/objectweb/proactive/core/process/rsh/RSHProcess.java

/* 
 * ################################################################
 * 
 * ProActive: The Java(TM) library for Parallel, Distributed, 
 *            Concurrent computing with Security and Mobility
 * 
 * Copyright (C) 1997-2007 INRIA/University of Nice-Sophia Antipolis
 * Contact: proactive@objectweb.org
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or any later version.
 *  
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *  
 *  Initial developer(s):               The ProActive Team
 *                        http://www.inria.fr/oasis/ProActive/contacts.html
 *  Contributor(s): 
 * 
 * ################################################################
 */ 
package org.objectweb.proactive.core.process.rsh;

import org.objectweb.proactive.core.process.AbstractExternalProcessDecorator;
import org.objectweb.proactive.core.process.ExternalProcess;
import org.objectweb.proactive.core.process.SimpleExternalProcess;
import org.objectweb.proactive.core.process.UniversalProcess;


public class RSHProcess extends AbstractExternalProcessDecorator {
    public final static String DEFAULT_RSHPATH = "/usr/bin/rsh ";
    public final static String DEFAULT_RSH_COPYPROTOCOL = "rcp";

    //
    // -- CONSTRUCTORS -----------------------------------------------
    //

    public RSHProcess() {
        super();

        FILE_TRANSFER_DEFAULT_PROTOCOL = DEFAULT_RSH_COPYPROTOCOL;
        this.command_path = DEFAULT_RSHPATH;
    }

    public RSHProcess(ExternalProcess targetProcess) {
        super(targetProcess);

        FILE_TRANSFER_DEFAULT_PROTOCOL = DEFAULT_RSH_COPYPROTOCOL;
        this.command_path = DEFAULT_RSHPATH;
    }

    //
    // -- PUBLIC METHODS -----------------------------------------------
    //

    public String getProcessId() {
        return "rsh_" + targetProcess.getProcessId();
    }

    public int getNodeNumber() {
        return targetProcess.getNodeNumber();
    }

    public UniversalProcess getFinalProcess() {
        checkStarted();
        return targetProcess.getFinalProcess();
    }

    public static void main(String[] args) {
        try {
            RSHProcess rsh = new RSHProcess(new SimpleExternalProcess("ls -lsa"));
            rsh.setHostname("solida");
            rsh.startProcess();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    //
    // -- PROTECTED METHODS -----------------------------------------------
    //
    protected String internalBuildCommand() {
        return buildRSHCommand() + buildEnvironmentCommand();
    }

    protected String buildRSHCommand() {
        if (IS_WINDOWS_SYSTEM) {
            return buildWindowsRSHCommand();
        } else {
            return buildUnixRSHCommand();
        }
    }

    protected String buildUnixRSHCommand() {
        StringBuilder command = new StringBuilder();
        command.append(DEFAULT_RSHPATH);
        // append username
        if (username != null) {
            command.append(" -l ");
            command.append(username);
        }

        // append host
        command.append(" ");
        command.append(hostname);
        command.append(" ");
        return command.toString();
    }

    protected String buildWindowsRSHCommand() {
        StringBuilder command = new StringBuilder();
        command.append("rsh");
        command.append(" ");
        command.append(hostname);
        // append username
        if (username != null) {
            command.append(" -l ");
            command.append(username);
        }

        // append host
        command.append(" ");
        return command.toString();
    }

    //
    // -- PRIVATE METHODS -----------------------------------------------
    //
}

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