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1   /*** 
2    * 
3    * Copyright 2004 Protique Ltd
4    * 
5    * Licensed under the Apache License, Version 2.0 (the "License"); 
6    * you may not use this file except in compliance with the License. 
7    * You may obtain a copy of the License at 
8    * 
9    * http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS, 
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
14   * See the License for the specific language governing permissions and 
15   * limitations under the License. 
16   * 
17   **/
18  package org.codehaus.activemq.transport.jgroups;
19  
20  import org.codehaus.activemq.message.WireFormat;
21  import org.codehaus.activemq.transport.TransportChannel;
22  import org.codehaus.activemq.transport.TransportChannelFactory;
23  import org.codehaus.activemq.util.JMSExceptionHelper;
24  import org.jgroups.Channel;
25  import org.jgroups.ChannelException;
26  import org.jgroups.ChannelFactory;
27  import org.jgroups.JChannelFactory;
28  
29  import javax.jms.JMSException;
30  import java.net.URI;
31  
32  /***
33   * A JGroups implementation of a TransportChannelFactory
34   *
35   * @version $Revision: 1.3 $
36   */
37  public class JGroupsTransportChannelFactory implements TransportChannelFactory {
38  
39      private ChannelFactory channelFactory = new JChannelFactory();
40      private Object channelConfiguration;
41      private String channelName = "ActiveMQ";
42  
43      public JGroupsTransportChannelFactory() {
44      }
45  
46      public JGroupsTransportChannelFactory(ChannelFactory channelFactory, Object channelConfiguration, String channelName) {
47          this.channelFactory = channelFactory;
48          this.channelConfiguration = channelConfiguration;
49          this.channelName = channelName;
50      }
51  
52      public TransportChannel create(WireFormat wireFormat, URI remoteLocation) throws JMSException {
53          try {
54              Channel channel = createChannel(remoteLocation);
55              channel.setOpt(Channel.AUTO_RECONNECT, Boolean.TRUE);
56              channel.connect(channelName);
57              return new JGroupsTransportChannel(wireFormat, channel, null);
58          }
59          catch (ChannelException e) {
60              throw JMSExceptionHelper.newJMSException("Failed to construct JGroups Channel: " + e, e);
61          }
62      }
63  
64      public TransportChannel create(WireFormat wireFormat, URI remoteLocation, URI localLocation) throws JMSException {
65          return create(wireFormat, remoteLocation);
66      }
67  
68      public boolean requiresEmbeddedBroker() {
69          return true;
70      }
71  
72      // Properties
73  
74      public ChannelFactory getChannelFactory() {
75          return channelFactory;
76      }
77  
78      public void setChannelFactory(ChannelFactory channelFactory) {
79          this.channelFactory = channelFactory;
80      }
81  
82      public Object getChannelConfiguration() {
83          return channelConfiguration;
84      }
85  
86      public void setChannelConfiguration(Object channelConfiguration) {
87          this.channelConfiguration = channelConfiguration;
88      }
89  
90      public String getChannelName() {
91          return channelName;
92      }
93  
94      public void setChannelName(String channelName) {
95          this.channelName = channelName;
96      }
97  
98      protected Channel createChannel(URI remoteLocation) throws ChannelException {
99          Object config = channelConfiguration;
100         if (config == null) {
101             // lets use the URI
102             String text = remoteLocation.getSchemeSpecificPart();
103             if (!text.equalsIgnoreCase("default")) {
104                 config = text;
105             }
106         }
107         System.out.println("Configuring JGroups with: " + config);
108         return channelFactory.createChannel(channelConfiguration);
109     }
110 }