/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.access.common.net;
  
  import java.net.ServerSocket;
  import java.net.Socket;
  
  import ch.qos.logback.access.common.spi.AccessContext;
  import ch.qos.logback.access.common.joran.JoranConfigurator;
  import ch.qos.logback.core.joran.spi.JoranException;
  import ch.qos.logback.core.util.StatusPrinter;
  
  /**
   * A simple {@link SocketNode} based server.
   * 
   * <pre>
   *     &lt;b&gt;Usage:&lt;/b&gt; java ch.qos.logback.access.net.SimpleSocketServer port configFile
   *    
   *     where
   * <em>
   * port
   * </em>
   *     is a part number where the server listens and
   * <em>
   * configFile
   * </em>
   *     is an xml configuration file fed to {@link JoranConfigurator}.
   * </pre>
   * 
   * @author Ceki G&uuml;lc&uuml;
   * @author S&eacute;bastien Pennec
   * 
   * @since 0.8.4
   */
  public class SimpleSocketServer {
  
      static int port;
  
      private static AccessContext basicContext;
  
      public static void main(String argv[]) throws Exception {
          if (argv.length == 2) {
              init(argv[0], argv[1]);
          } else {
              usage("Wrong number of arguments.");
          }
  
          runServer();
      }
  
      static void runServer() {
          try {
              System.out.println("Listening on port " + port);
              @SuppressWarnings("resource")
              ServerSocket serverSocket = new ServerSocket(port);
              while (true) {
                  System.out.println("Waiting to accept a new client.");
                  Socket socket = serverSocket.accept();
                  System.out.println("Connected to client at " + socket.getInetAddress());
                  System.out.println("Starting new socket node.");
                  new Thread(new SocketNode(socket, basicContext)).start();
              }
          } catch (Exception e) {
              e.printStackTrace();
          }
      }
  
      static void usage(String msg) {
          System.err.println(msg);
          System.err.println("Usage: java " + SimpleSocketServer.class.getName() + " port configFile");
          System.exit(1);
      }
  
      static void init(String portStr, String configFile) throws JoranException {
          try {
              port = Integer.parseInt(portStr);
          } catch (java.lang.NumberFormatException e) {
              e.printStackTrace();
              usage("Could not interpret port number [" + portStr + "].");
          }
  
          basicContext = new AccessContext();
          if (configFile.endsWith(".xml")) {
              JoranConfigurator configurator = new JoranConfigurator();
              configurator.setContext(basicContext);
              configurator.doConfigure(configFile);
              StatusPrinter.print(basicContext);
          }
     }
 }