EmberTransportChannelFactory xref

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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.ember;
    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.TransportChannelFactory;
    25  import org.codehaus.activemq.util.IdGenerator;
    26  import pyrasun.eio.EIOGlobalContext;
    27  import pyrasun.eio.EIOPoolingStrategy;
    28  import pyrasun.eio.services.EmberServiceController;
    29  import pyrasun.eio.services.EmberServiceException;
    30  import pyrasun.eio.services.bytearray.ByteArrayClientService;
    31  import pyrasun.eio.services.bytearray.ByteArrayServerClient;
    32
    33  import javax.jms.JMSException;
    34  import java.io.IOException;
    35  import java.net.URI;
    36
    37  /***
    38   * An EmberIO (using NIO) implementation of a TransportChannelFactory
    39   *
    40   * @version $Revision: 1.8 $
    41   */
    42  public class EmberTransportChannelFactory extends EmberSupport implements TransportChannelFactory {
    43
    44      protected static final Log log = LogFactory.getLog(EmberTransportChannelFactory.class);
    45
    46      private IdGenerator idGenerator = new IdGenerator();
    47
    48      public EmberTransportChannelFactory() {
    49      }
    50
    51      public EmberTransportChannelFactory(EIOGlobalContext context, EIOPoolingStrategy ioPoolingStrategy) {
    52          super(context, ioPoolingStrategy);
    53      }
    54
    55      /***
    56       * Create a Channel to a remote Node - e.g. a Broker
    57       *
    58       * @param wireFormat
    59       * @param remoteLocation
    60       * @return the TransportChannel bound to the remote node
    61       * @throws JMSException
    62       */
    63      public TransportChannel create(WireFormat wireFormat, URI remoteLocation) throws JMSException {
    64          try {
    65              String id = idGenerator.generateId();
    66              EmberServiceController controller = getController();
    67
    68              ByteArrayServerClient client = createClient(controller, remoteLocation, id);
    69              return new EmberTransportChannel(wireFormat, getContext(), controller, client);
    70          }
    71          catch (IOException ioe) {
    72              JMSException jmsEx = new JMSException("Initialization of TransportChannel failed: " + ioe);
    73              jmsEx.setLinkedException(ioe);
    74              throw jmsEx;
    75          }
    76          catch (EmberServiceException e) {
    77              JMSException jmsEx = new JMSException("Initialization of TransportChannel failed: " + e);
    78              jmsEx.setLinkedException(e);
    79              throw jmsEx;
    80          }
    81      }
    82
    83      /***
    84       * Create a Channel to a remote Node - e.g. a Broker
    85       *
    86       * @param wireFormat
    87       * @param remoteLocation
    88       * @param localLocation  -
    89       *                       e.g. local InetAddress and local port
    90       * @return the TransportChannel bound to the remote node
    91       * @throws JMSException
    92       */
    93      public TransportChannel create(WireFormat wireFormat, URI remoteLocation, URI localLocation) throws JMSException {
    94          return create(wireFormat, remoteLocation);
    95      }
    96
    97      public boolean requiresEmbeddedBroker() {
    98          return false;
    99      }
    100
    101     /***
    102      * @param remoteLocation
    103      * @param id
    104      * @return @throws
    105      *         JMSException
    106      * @throws EmberServiceException
    107      * @throws IOException
    108      */
    109     protected ByteArrayServerClient createClient(EmberServiceController controller, URI remoteLocation, String id) throws JMSException,
    110             EmberServiceException, IOException {
    111         ByteArrayClientService service = createNioService(controller);
    112         ByteArrayServerClient client = service.createClient(remoteLocation.getHost(), remoteLocation.getPort(), id, null);
    113         return client;
    114     }
    115
    116     /***
    117      * Factory method to create a new ObjectClientService
    118      *
    119      * @throws JMSException if it could not be created
    120      */
    121     protected ByteArrayClientService createNioService(EmberServiceController controller) throws JMSException {
    122         ByteArrayClientService service;
    123         try {
    124             service = new ByteArrayClientService(getContext(), getIoPoolingStrategy());
    125             controller.addService(service);
    126         }
    127         catch (IOException e) {
    128             throw createJMSException("Creation of NIO service failed: ", e);
    129         }
    130         return service;
    131     }
    132
    133 }