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Java > Open Source Codes > org > exolab > jms > net > tunnel > EndpointManager


1 /**
2  * Redistribution and use of this software and associated documentation
3  * ("Software"), with or without modification, are permitted provided
4  * that the following conditions are met:
5  *
6  * 1. Redistributions of source code must retain copyright
7  * statements and notices. Redistributions must also contain a
8  * copy of this document.
9  *
10  * 2. Redistributions in binary form must reproduce the
11  * above copyright notice, this list of conditions and the
12  * following disclaimer in the documentation and/or other
13  * materials provided with the distribution.
14  *
15  * 3. The name "Exolab" must not be used to endorse or promote
16  * products derived from this Software without prior written
17  * permission of Exoffice Technologies. For written permission,
18  * please contact info@exolab.org.
19  *
20  * 4. Products derived from this Software may not be called "Exolab"
21  * nor may "Exolab" appear in their names without prior written
22  * permission of Exoffice Technologies. Exolab is a registered
23  * trademark of Exoffice Technologies.
24  *
25  * 5. Due credit should be given to the Exolab Project
26  * (http://www.exolab.org/).
27  *
28  * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29  * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32  * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39  * OF THE POSSIBILITY OF SUCH DAMAGE.
40  *
41  * Copyright 2004 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  * $Id: EndpointManager.java,v 1.1 2004/11/26 01:51:17 tanderson Exp $
44  */

45
46 package org.exolab.jms.net.tunnel;
47
48 import java.io.IOException JavaDoc;
49 import java.net.Socket JavaDoc;
50 import java.rmi.server.ObjID JavaDoc;
51 import java.util.Collections JavaDoc;
52 import java.util.HashMap JavaDoc;
53 import java.util.Map JavaDoc;
54
55
56 /**
57  * Manages connections for {@link TunnelServlet}
58  *
59  * @author <a HREF="mailto:tma@netspace.net.au">Tim Anderson</a>
60  * @version $Revision: 1.1 $ $Date: 2004/11/26 01:51:17 $
61  */

62 class EndpointManager {
63
64     /**
65      * A map of <code>EndpointInfo</code>, keyed on identifier
66      */

67     private Map JavaDoc _endpoints = Collections.synchronizedMap(new HashMap JavaDoc());
68
69     /**
70      * Create a new endpoint
71      *
72      * @param host the host to connect to
73      * @param port the port to connect to
74      * @return the identifier of the new endpoint
75      * @throws IOException for any I/O error
76      */

77     public String JavaDoc open(String JavaDoc host, int port) throws IOException JavaDoc {
78         Socket JavaDoc socket = new Socket JavaDoc(host, port);
79         String JavaDoc id = new ObjID JavaDoc().toString();
80         EndpointInfo result = new EndpointInfo(id, socket);
81         _endpoints.put(id, result);
82         return id;
83     }
84
85     /**
86      * Returns a {@link EndpointInfo} given its identifier
87      *
88      * @param id the endpoint identifier
89      * @return the connection corresponding to <code>id</code> or
90      * <code>null</code> if none exists
91      */

92     public EndpointInfo getEndpointInfo(String JavaDoc id) {
93         return (EndpointInfo) _endpoints.get(id);
94     }
95
96     /**
97      * Returns an endpoint given its identifier
98      *
99      * @param id the endpoint identifier
100      * @return the endpoint corresponding to <code>id</code> or
101      * <code>null</code>
102      */

103     public Socket JavaDoc getEndpoint(String JavaDoc id) {
104         Socket JavaDoc endpoint = null;
105         EndpointInfo info = getEndpointInfo(id);
106         if (info != null) {
107             endpoint = info.getEndpoint();
108         }
109         return endpoint;
110     }
111
112     /**
113      * Close a connection given its identifier
114      *
115      * @param id the connection identifier
116      * @throws IOException for any I/O error
117      */

118     public void close(String JavaDoc id) throws IOException JavaDoc {
119         Socket JavaDoc endpoint = getEndpoint(id);
120         if (endpoint != null) {
121             try {
122                 endpoint.close();
123             } finally {
124                 _endpoints.remove(id);
125             }
126         }
127     }
128
129 }
130
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