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 2000-2003 (C) Exoffice Technologies Inc. All Rights Reserved.
42 *
43 * $Id: IpcJmsSessionSender.java,v 1.10 2003/08/07 13:33:09 tanderson Exp $
44 *
45 * Date Author Changes
46 * $Date jimm Created
47 */
48
49
50 package org.exolab.jms.server.mipc;
51
52 import java.util.Vector;
53
54 import javax.jms.Message;
55
56 import org.exolab.core.mipc.ObjectChannel;
57 import org.exolab.jms.client.JmsMessageListener;
58 import org.exolab.jms.message.MessageImpl;
59 import org.exolab.jms.scheduler.Scheduler;
60 import org.exolab.jms.server.ClientDisconnectionException;
61 import org.exolab.jms.server.JmsServerSession;
62
63
64 /***
65 * This class contains the ipc connection to a receiver or subscriber
66 * for passing the JmsMessages.
67 *
68 * If the connection is detected as closed, the Session will also be shutdown.
69 *
70 * @version $Revision: 1.10 $ $Date: 2003/08/07 13:33:09 $
71 * @author <a href="mailto:mourikis@exolab.org">Jim Mourikis</a>
72 * @see org.exolab.jms.server.mipc.IpcJmsSessionConnection
73 * @see org.exolab.jms.server.JmsServerSession
74 * @see org.exolab.core.ipc.Client
75 *
76 */
77 public class IpcJmsSessionSender implements JmsMessageListener {
78
79 /***
80 * The client connection
81 */
82 private ObjectChannel _client;
83
84 /***
85 * The session
86 */
87 private JmsServerSession _session = null;
88
89
90 /***
91 * Create a connection to the client listener for sending JmsMessages.
92 *
93 * @param client The connection to the client.
94 * @param session The session this connection belongs to.
95 *
96 */
97 public IpcJmsSessionSender(ObjectChannel client,
98 JmsServerSession session) {
99 _client = client;
100 _session = session;
101 session.setMessageListener(this);
102 }
103
104 /***
105 * Send a JmsMessage to a listener.
106 *
107 * @param message The message to send.
108 */
109 public synchronized void onMessage(Message message) {
110 try {
111 if (_client != null) {
112 Vector v = new Vector(2);
113 v.add(_session.getSessionId());
114 v.add((MessageImpl) message);
115
116
117
118
119
120
121
122 _client.send(v);
123 Vector reply = (Vector) _client.receive();
124 }
125 } catch (Exception err) {
126 throw new ClientDisconnectionException(err.getMessage());
127 }
128 }
129
130 /***
131 * Send the collection of messages to the client. This is used for async
132 * message delivery.
133 *
134 * @param messages - collection of MessageImpl objects
135 */
136 public synchronized void onMessages(Vector messages) {
137 try {
138 if (_client != null) {
139 Vector v = new Vector(2);
140 v.add(_session.getSessionId());
141 v.add(messages);
142
143
144
145
146
147
148 _client.send(v);
149 Vector reply = (Vector) _client.receive();
150 }
151 } catch (Exception err) {
152 throw new ClientDisconnectionException(err.getMessage());
153 }
154 }
155
156 /***
157 * Notify the specified client that a message avaiable.
158 *
159 * @param clinet - the client identity
160 */
161 public synchronized void onMessageAvailable(long clientId) {
162
163 Scheduler.instance().add(new Notifier(clientId));
164 }
165
166 /***
167 * Remove the callback from the JmsServerSession.
168 */
169 public synchronized void close() {
170 if (_session != null) {
171 _session.setMessageListener(null);
172 _session = null;
173 }
174 _client = null;
175 }
176
177 private class Notifier implements Runnable {
178
179 private long _clientId;
180
181 public Notifier(long clientId) {
182 _clientId = clientId;
183 }
184
185 public void run() {
186 synchronized (IpcJmsSessionSender.this) {
187 try {
188 if (_client != null) {
189 Vector v = new Vector(2);
190 v.add(_session.getSessionId());
191 v.add(new Long(_clientId));
192 _client.send(v);
193 Vector reply = (Vector) _client.receive();
194 }
195 } catch (Exception exception) {
196 exception.printStackTrace();
197 }
198 }
199 }
200 }
201
202 }