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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: RmiJmsServerConnection.java,v 1.18 2003/08/17 01:32:26 tanderson Exp $ 44 * 45 * Date Author Changes 46 * 04/18/2000 jima Created 47 */ 48 package org.exolab.jms.server.rmi; 49 50 import java.rmi.RemoteException; 51 import java.rmi.server.UnicastRemoteObject; 52 import java.util.Enumeration; 53 54 import javax.jms.JMSException; 55 56 import org.apache.commons.logging.Log; 57 import org.apache.commons.logging.LogFactory; 58 59 import org.exolab.jms.lease.BaseLease; 60 import org.exolab.jms.lease.LeaseEventListenerIfc; 61 import org.exolab.jms.server.JmsServerConnection; 62 import org.exolab.jms.server.JmsServerConnectionManager; 63 64 65 /*** 66 * This is an implementation of the RemoteJmsServerConnectionIfc interface 67 * which wraps the JmsConnection class. It basically delegates to an instance 68 * of JmsConnection. 69 * 70 * @version $Revision: 1.18 $ $Date: 2003/08/17 01:32:26 $ 71 * @author <a href="mailto:jima@intalio.com">Jim Alateras</a> 72 * @see JmsServerConnection 73 */ 74 public class RmiJmsServerConnection 75 extends UnicastRemoteObject 76 implements RemoteJmsServerConnectionIfc, LeaseEventListenerIfc { 77 78 /*** 79 * This is the object that the RMI connection object delegates to. It must 80 * be non-null and assigned during object construction 81 */ 82 protected JmsServerConnection _delegate = null; 83 84 /*** 85 * The interval, in milliseconds, between subsequent ping events 86 */ 87 protected int _interval = 0; 88 89 /*** 90 * This is the lease on this object. This is not used anymore since we 91 * now use a different approach to determine whether the client is 92 * active. {@see JmsServerSession#isClientEndpointActive} 93 */ 94 protected BaseLease _lease = null; 95 96 /*** 97 * The logger 98 */ 99 private static final Log _log = 100 LogFactory.getLog(RmiJmsServerConnection.class); 101 102 103 /*** 104 * Instantiae an instance of this class with a JmsServerConnection instance. 105 * This class will simply delegate requests to the JmsServerConnection 106 * object. If a null connection is specified then throw JMSException. 107 * 108 * @param connection delegate connection object 109 * @param interval the interval between ping requests, in seconds 110 * @throws RemoteException if failed to export object 111 */ 112 public RmiJmsServerConnection(JmsServerConnection connection, int interval) 113 throws RemoteException { 114 115 if (connection == null) { 116 throw new IllegalArgumentException("Argument connection is null"); 117 } 118 119 if (interval < 0) { 120 interval = 0; 121 } 122 _interval = interval * 1000; 123 _delegate = connection; 124 } 125 126 // implementation of RemoteJmsServerConnection.createSession 127 public RemoteJmsServerSessionIfc createSession(int ackMode, 128 boolean transacted) 129 throws JMSException, RemoteException { 130 return new RmiJmsServerSession( 131 _delegate.createSession(ackMode, transacted)); 132 } 133 134 // implementation of RemoteJmsServerConnection.deleteSession 135 public void deleteSession(RemoteJmsServerSessionIfc session) 136 throws JMSException, RemoteException { 137 // _delegate.deleteSession(???); 138 } 139 140 // implementation of RemoteJmsServerConnection.getSessionCount 141 public int getSessionCount() throws JMSException, RemoteException { 142 return _delegate.getSessionCount(); 143 } 144 145 // implementation of RemoteJmsServerConnection.getSessions 146 public Enumeration getSessions() throws JMSException, RemoteException { 147 throw new RemoteException( 148 "This function is too expensive to implement"); 149 // this is quite an expensive call since it will create 150 // RmiJmsServerSession objects for each active session. 151 // wait until we need it. 152 } 153 154 // implementation of RemoteJmsServerConnection.start 155 public void start() throws JMSException, RemoteException { 156 _delegate.start(); 157 } 158 159 // implementation of RemoteJmsServerConnection.stop 160 public void stop() throws JMSException, RemoteException { 161 _delegate.stop(); 162 } 163 164 // implementation of RemoteJmsServerConnection.close 165 public void close() throws JMSException, RemoteException { 166 JmsServerConnectionManager.instance().closeConnection( 167 _delegate.getID()); 168 _delegate.close(); 169 _delegate = null; 170 } 171 172 // implementation of RemoteJmsServerConnection.getConnectionId() 173 public String getConnectionId() throws RemoteException { 174 return _delegate.getConnectionId(); 175 } 176 177 // implementation of RemoteJmsServerConnection.ping() 178 public void ping() throws RemoteException { 179 // do nothing at this stage 180 181 //if (_lease == null) { 182 // _lease = LeaseManager.instance().createLease( 183 // this, _interval, this); 184 //} else { 185 // LeaseManager.instance().renewLease(_lease, _interval); 186 //} 187 } 188 189 // implementation of LeaseEventListenerIfc.onLeaseExpired 190 public void onLeaseExpired(Object leasedObject) { 191 _log.error("onLeaseExpired should never be called"); 192 /*** 193 // the lease has expired. It means that the client has gone. so we need 194 // to shutdown the connection on this side 195 try { 196 this.close(); 197 _lease = null; 198 } catch (Exception exception) { 199 // catch all exceptions 200 _log.error("Error while closing the connection", exception); 201 } 202 **/ 203 } 204 205 } //-- RmiJmsServerConnection

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