1 package org.apache.jcs.utils.net;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.net.InetAddress;
23 import java.net.UnknownHostException;
24
25 import org.apache.commons.logging.Log;
26 import org.apache.commons.logging.LogFactory;
27
28 /***
29 * Simple utility for getting the local host name.
30 * <p>
31 * @author Aaron Smuts
32 */
33 public class HostNameUtil
34 {
35 private final static Log log = LogFactory.getLog( HostNameUtil.class );
36
37 /***
38 * Gets the address for the local machine.
39 * <p>
40 * @return InetAddress.getLocalHost().getHostAddress(), or unknown if there
41 * is an error.
42 */
43 public static String getLocalHostAddress()
44 {
45 String hostAddress = "unknown";
46 try
47 {
48 // todo, you should be able to set this
49 hostAddress = InetAddress.getLocalHost().getHostAddress();
50 if ( log.isDebugEnabled() )
51 {
52 log.debug( "hostAddress = [" + hostAddress + "]" );
53 }
54 }
55 catch ( UnknownHostException e1 )
56 {
57 log.error( "Couldn't get localhost address", e1 );
58 }
59 return hostAddress;
60 }
61 }