1 package org.apache.commons.jcs.auxiliary.remote;
2
3 import java.util.regex.Matcher;
4 import java.util.regex.Pattern;
5
6 import org.apache.commons.logging.Log;
7 import org.apache.commons.logging.LogFactory;
8
9 /*
10 * Licensed to the Apache Software Foundation (ASF) under one
11 * or more contributor license agreements. See the NOTICE file
12 * distributed with this work for additional information
13 * regarding copyright ownership. The ASF licenses this file
14 * to you under the Apache License, Version 2.0 (the
15 * "License"); you may not use this file except in compliance
16 * with the License. You may obtain a copy of the License at
17 *
18 * http://www.apache.org/licenses/LICENSE-2.0
19 *
20 * Unless required by applicable law or agreed to in writing,
21 * software distributed under the License is distributed on an
22 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
23 * KIND, either express or implied. See the License for the
24 * specific language governing permissions and limitations
25 * under the License.
26 */
27
28 /**
29 * Location of the RMI registry.
30 */
31 public final class RemoteLocation
32 {
33 /** The logger. */
34 private static final Log log = LogFactory.getLog( RemoteLocation.class );
35
36 /** Pattern for parsing server:port */
37 private static final Pattern SERVER_COLON_PORT = Pattern.compile("(\\S+)\\s*:\\s*(\\d+)");
38
39 /** Host name */
40 private final String host;
41
42 /** Port */
43 private final int port;
44
45 /**
46 * Constructor for the Location object
47 * <p>
48 * @param host
49 * @param port
50 */
51 public RemoteLocation( String host, int port )
52 {
53 this.host = host;
54 this.port = port;
55 }
56
57 /**
58 * @return the host
59 */
60 public String getHost()
61 {
62 return host;
63 }
64
65 /**
66 * @return the port
67 */
68 public int getPort()
69 {
70 return port;
71 }
72
73 /**
74 * @param obj
75 * @return true if the host and port are equal
76 */
77 @Override
78 public boolean equals( Object obj )
79 {
80 if ( obj == this )
81 {
82 return true;
83 }
84 if ( obj == null || !( obj instanceof RemoteLocation ) )
85 {
86 return false;
87 }
88 RemoteLocation l = (RemoteLocation) obj;
89 if ( this.host == null )
90 {
91 return l.host == null && port == l.port;
92 }
93 return host.equals( l.host ) && port == l.port;
94 }
95
96 /**
97 * @return int
98 */
99 @Override
100 public int hashCode()
101 {
102 return host == null ? port : host.hashCode() ^ port;
103 }
104
105 /**
106 * @see java.lang.Object#toString()
107 */
108 @Override
109 public String toString()
110 {
111 StringBuilder sb = new StringBuilder();
112 if (this.host != null)
113 {
114 sb.append(this.host);
115 }
116 sb.append(':').append(this.port);
117
118 return sb.toString();
119 }
120
121 /**
122 * Parse remote server and port from the string representation server:port and store them in
123 * a RemoteLocation object
124 *
125 * @param server the input string
126 * @return the remote location object
127 */
128 public static RemoteLocation parseServerAndPort(final String server)
129 {
130 Matcher match = SERVER_COLON_PORT.matcher(server);
131
132 if (match.find() && match.groupCount() == 2)
133 {
134 RemoteLocation location = new RemoteLocation( match.group(1), Integer.parseInt( match.group(2) ) );
135 return location;
136 }
137 else
138 {
139 log.error("Invalid server descriptor: " + server);
140 }
141
142 return null;
143 }
144 }