edu.hawaii.soest.pacioos.text.TextSourceApp.java Source code

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Here is the source code for edu.hawaii.soest.pacioos.text.TextSourceApp.java

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/**
 *  Copyright: 2013 Regents of the University of Hawaii and the
 *             School of Ocean and Earth Science and Technology
 *    Purpose: A class that is the main entry point for communicating
 *             with remote instruments streaming simple text-based
 *             samples.
 *
 *   Authors: Christopher Jones
 *
 * $HeadURL$
 * $LastChangedDate$
 * $LastChangedBy$
 * $LastChangedRevision$
 *
 * This program 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 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package edu.hawaii.soest.pacioos.text;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * A simple class used to start a SimpleTextSource driver.  Configure the driver by changing
 * the XML-based configuration file with the proper settings.
 * 
 * @author cjones
 *
 */
public class TextSourceApp {

    private static final Log log = LogFactory.getLog(TextSourceApp.class);

    public static SimpleTextSource textSource = null;

    /**
     * @param args
     */
    public static void main(String[] args) {

        String xmlConfiguration = null;
        if (args.length != 1) {
            log.error("Please provide the path to the instrument's XML configuration file "
                    + "as a single parameter.");
            System.exit(1);
        } else {
            xmlConfiguration = args[0];
        }
        try {
            textSource = TextSourceFactory.getSimpleTextSource(xmlConfiguration);

            if (textSource != null) {
                textSource.start();

            }

            // Handle ctrl-c's and other abrupt death signals to the process
            Runtime.getRuntime().addShutdownHook(new Thread() {
                // stop the streaming process
                public void run() {
                    log.info("Stopping the SimpleTextSource driver due to user request");
                    textSource.stop();
                }
            });

        } catch (ConfigurationException e) {
            if (log.isDebugEnabled()) {
                e.printStackTrace();
            }

            log.error("There was a problem configuring the driver.  The error message was: " + e.getMessage());
            System.exit(1);

        }
    }

}