src/java/org/apache/log4j/net/SimpleSocketServer.java

/*
 * Copyright (C) The Apache Software Foundation. All rights reserved.
 *
 * This software is published under the terms of the Apache Software
 * License version 1.1, a copy of which has been included with this
 * distribution in the LICENSE.txt file.  */

package org.apache.log4j.net;

import java.net.Socket;
import java.net.ServerSocket;

import org.apache.log4j.Category;
import org.apache.log4j.LogManager;
import org.apache.log4j.PropertyConfigurator;


/**
   A simple {@link SocketNode} based server.

   <pre>
     <b>Usage:</b> java org.apache.log4j.net.SimpleSocketServer port configFile

     where <em>port</em> is a part number where the server listens and
     <em>configFile</em> is a configuration file fed to the {@link
     PropertyConfigurator}.
   </pre>

    @author  Ceki G&uuml;lc&uuml;

    @since 0.8.4 */

public class SimpleSocketServer  {

  static Category cat = Category.getInstance(SimpleSocketServer.class.getName());

  static int port;

  public
  static
  void main(String argv[]) {
    if(argv.length == 2)
      init(argv[0], argv[1]);
    else
      usage("Wrong number of arguments.");

    try {
      cat.info("Listening on port " + port);
      ServerSocket serverSocket = new ServerSocket(port);
      while(true) {
	cat.info("Waiting to accept a new client.");
	Socket socket = serverSocket.accept();
	cat.info("Connected to client at " + socket.getInetAddress());
	cat.info("Starting new socket node.");
	new Thread(new SocketNode(socket,
				  LogManager.getLoggerRepository())).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) {
    try {
      port = Integer.parseInt(portStr);
    }
    catch(java.lang.NumberFormatException e) {
      e.printStackTrace();
      usage("Could not interpret port number ["+ portStr +"].");
    }
    PropertyConfigurator.configure(configFile);
  }
}