View Javadoc

    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.apache.commons.logging.Log;
    21  import org.apache.commons.logging.LogFactory;
    22  import org.codehaus.activemq.message.WireFormat;
    23  import org.codehaus.activemq.transport.TransportChannel;
    24  import org.codehaus.activemq.transport.TransportChannelFactorySupport;
    25  import org.codehaus.activemq.util.JMSExceptionHelper;
    26  import org.jgroups.Channel;
    27  import org.jgroups.ChannelException;
    28  import org.jgroups.ChannelFactory;
    29  import org.jgroups.JChannelFactory;
    30
    31  import javax.jms.JMSException;
    32  import java.net.URI;
    33
    34  /***
    35   * A JGroups implementation of a TransportChannelFactory
    36   *
    37   * @version $Revision: 1.5 $
    38   */
    39  public class JGroupsTransportChannelFactory extends TransportChannelFactorySupport {
    40      private static final Log log = LogFactory.getLog(JGroupsTransportChannelFactory.class);
    41
    42      private ChannelFactory channelFactory = new JChannelFactory();
    43      private Object channelConfiguration;
    44      private String channelName = "ActiveMQ";
    45
    46      public JGroupsTransportChannelFactory() {
    47      }
    48
    49      public JGroupsTransportChannelFactory(ChannelFactory channelFactory, Object channelConfiguration, String channelName) {
    50          this.channelFactory = channelFactory;
    51          this.channelConfiguration = channelConfiguration;
    52          this.channelName = channelName;
    53      }
    54
    55      public TransportChannel create(WireFormat wireFormat, URI remoteLocation) throws JMSException {
    56          try {
    57              Channel channel = createChannel(remoteLocation);
    58              channel.setOpt(Channel.AUTO_RECONNECT, Boolean.TRUE);
    59              channel.connect(channelName);
    60              return populateProperties(new JGroupsTransportChannel(wireFormat, channel, null), remoteLocation);
    61          }
    62          catch (ChannelException e) {
    63              throw JMSExceptionHelper.newJMSException("Failed to construct JGroups Channel: " + e, e);
    64          }
    65      }
    66
    67      public TransportChannel create(WireFormat wireFormat, URI remoteLocation, URI localLocation) throws JMSException {
    68          return create(wireFormat, remoteLocation);
    69      }
    70
    71      public boolean requiresEmbeddedBroker() {
    72          return true;
    73      }
    74
    75      // Properties
    76      //-------------------------------------------------------------------------
    77
    78
    79      public ChannelFactory getChannelFactory() {
    80          return channelFactory;
    81      }
    82
    83      public void setChannelFactory(ChannelFactory channelFactory) {
    84          this.channelFactory = channelFactory;
    85      }
    86
    87      public Object getChannelConfiguration() {
    88          return channelConfiguration;
    89      }
    90
    91      public void setChannelConfiguration(Object channelConfiguration) {
    92          this.channelConfiguration = channelConfiguration;
    93      }
    94
    95      public String getChannelName() {
    96          return channelName;
    97      }
    98
    99      public void setChannelName(String channelName) {
    100         this.channelName = channelName;
    101     }
    102
    103     protected Channel createChannel(URI remoteLocation) throws ChannelException {
    104         Object config = channelConfiguration;
    105         if (config == null) {
    106             // lets use the URI
    107             String text = remoteLocation.getSchemeSpecificPart();
    108             if (!text.equalsIgnoreCase("default")) {
    109                 config = text;
    110             }
    111         }
    112         log.info("Configuring JGroups with: " + config);
    113         return channelFactory.createChannel(config);
    114     }
    115 }