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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.log4j.net;
19  
20  import java.net.ServerSocket;
21  import java.net.Socket;
22  
23  import org.apache.log4j.LogManager;
24  import org.apache.log4j.Logger;
25  import org.apache.log4j.PropertyConfigurator;
26  import org.apache.log4j.xml.DOMConfigurator;
27  
28  
29  /**
30   *  A simple {@link SocketNode} based server.
31   *
32     <pre>
33     <b>Usage:</b> java org.apache.log4j.net.SimpleSocketServer port configFile
34  
35     where <em>port</em> is a part number where the server listens and
36     <em>configFile</em> is a configuration file fed to the {@link
37     PropertyConfigurator} or to {@link DOMConfigurator} if an XML file.
38     </pre>
39    *
40    * @author  Ceki G&uuml;lc&uuml;
41    *
42    *  @since 0.8.4 
43    * */
44  public class SimpleSocketServer  {
45  
46    static Logger cat = Logger.getLogger(SimpleSocketServer.class);
47  
48    static int port;
49  
50    public
51    static
52    void main(String argv[]) {
53      if(argv.length == 2) {
54        init(argv[0], argv[1]);
55      } else {
56        usage("Wrong number of arguments.");
57      }
58      
59      try {
60        cat.info("Listening on port " + port);
61        ServerSocket serverSocket = new ServerSocket(port);
62        while(true) {
63  	cat.info("Waiting to accept a new client.");
64  	Socket socket = serverSocket.accept();
65  	cat.info("Connected to client at " + socket.getInetAddress());
66  	cat.info("Starting new socket node.");
67  	new Thread(new SocketNode(socket,
68  				  LogManager.getLoggerRepository()),"SimpleSocketServer-" + port).start();
69        }
70      } catch(Exception e) {
71        e.printStackTrace();
72      }
73    }
74  
75  
76    static void  usage(String msg) {
77      System.err.println(msg);
78      System.err.println(
79        "Usage: java " +SimpleSocketServer.class.getName() + " port configFile");
80      System.exit(1);
81    }
82  
83    static void init(String portStr, String configFile) {
84      try {
85        port = Integer.parseInt(portStr);
86      } catch(java.lang.NumberFormatException e) {
87        e.printStackTrace();
88        usage("Could not interpret port number ["+ portStr +"].");
89      }
90     
91      if(configFile.endsWith(".xml")) {
92        DOMConfigurator.configure(configFile);
93      } else {
94        PropertyConfigurator.configure(configFile);
95      }
96    }
97  }