Main.java :  » RSS-RDF » nntp-rss » org » methodize » nntprss » Java Open Source

package org.methodize.nntprss;

/* -----------------------------------------------------------
 * nntp//rss - a bridge between the RSS world and NNTP clients
 * Copyright (c) 2002, 2003 Jason Brome.  All Rights Reserved.
 *
 * email: nntprss@methodize.org
 * mail:  Methodize Solutions
 *        PO Box 3865
 *        Grand Central Station
 *        New York NY 10163
 * 
 * This file is part of nntp//rss
 * 
 * nntp//rss 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
 * ----------------------------------------------------- */

import java.io.InputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.log4j.Logger;
import org.methodize.nntprss.admin.AdminServer;
import org.methodize.nntprss.db.DBManager;
import org.methodize.nntprss.nntp.NNTPServer;
import org.methodize.nntprss.rss.ChannelManager;
import org.methodize.nntprss.util.AppConstants;
import org.w3c.dom.Document;

/**
 * @author Jason Brome <jason@methodize.org>
 * @version $Id: Main.java,v 1.5 2003/03/24 03:09:18 jasonbrome Exp $
 */
public class Main {

  private Logger log = Logger.getLogger(Main.class);

  private DBManager dbManager = null;
  private NNTPServer nntpServer = null;
  private ChannelManager channelManager = null;
  private AdminServer adminServer = null;
  private WindowsSysTray windowsSysTray = null;

  private class ShutdownHook extends Thread {

    private Logger log = Logger.getLogger(Main.ShutdownHook.class);
    /**
     * @see java.lang.Runnable#run()
     */
    public void run() {
      if(log.isInfoEnabled()) {
        log.info("Shutting down nntp//rss...");
      }
      
      if(windowsSysTray != null) {
        windowsSysTray.shutdown();
      }

      adminServer.shutdown();

      nntpServer.shutdown();

      channelManager.shutdown();

      dbManager.shutdown();

      if(log.isInfoEnabled()) {
        log.info("nntp//rss shutdown successfully...");
      }
    }

  }

  public void startNntpRss() {

    if (log.isInfoEnabled()) {
      log.info("Starting nntp//rss v" + AppConstants.VERSION);
    }

    try {
      if(System.getProperty("os.name").toLowerCase().startsWith("windows")) {
        windowsSysTray = new WindowsSysTray();
      }

      // Load configuration
      Document config = loadConfiguration();

      // Start DB server
      dbManager = new DBManager();
      dbManager.configure(config);
      dbManager.startup();

      channelManager = ChannelManager.getChannelManager();
      channelManager.configure(config);

      // Start NNTP server
      nntpServer = new NNTPServer();
      nntpServer.configure(config);

      adminServer = new AdminServer(channelManager, nntpServer);
      adminServer.configure(config);

      Runtime.getRuntime().addShutdownHook(this.new ShutdownHook());

      adminServer.start();
      nntpServer.start();
      channelManager.start();
      
      if(windowsSysTray != null) {
        windowsSysTray.setAdminURL("http://127.0.0.1:"
          + adminServer.getPort() + "/");
        windowsSysTray.showStarted();
      }

    } catch (Exception e) {
      log.error("Exception thrown during startup",
        e);
      e.printStackTrace();
      System.exit(-1);
    }

  }

  private Document loadConfiguration() {
    Document configDoc = null;

    InputStream configFile =
      getClass().getClassLoader().getResourceAsStream(
        AppConstants.NNTPRSS_CONFIGURATION_FILE);
    if (configFile == null) {
      throw new RuntimeException(
        "Cannot load "
          + AppConstants.NNTPRSS_CONFIGURATION_FILE
          + " configuration file");
    }

    try {
      DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
      DocumentBuilder db = dbf.newDocumentBuilder();
      configDoc = db.parse(configFile);
    } catch (Exception e) {
      // FIXME more granular exception?
      throw new RuntimeException(
        "Error parsing "
          + AppConstants.NNTPRSS_CONFIGURATION_FILE
          + " configuration file");
    }

    return configDoc;

  }

  public static void main(String[] args) {

    Main startup = new Main();
    startup.startNntpRss();

  }
  
  // Shutdown hook for Windows Java Service Wrappers
  // e.g. JNT
  public static void stopApplication() {
    System.exit(0);
  }
}