TransientTopicMessageContainerManager 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.service.impl;
    19
    20  import org.apache.commons.logging.Log;
    21  import org.apache.commons.logging.LogFactory;
    22  import org.codehaus.activemq.broker.BrokerClient;
    23  import org.codehaus.activemq.filter.FilterFactory;
    24  import org.codehaus.activemq.filter.FilterFactoryImpl;
    25  import org.codehaus.activemq.message.ActiveMQDestination;
    26  import org.codehaus.activemq.message.ActiveMQMessage;
    27  import org.codehaus.activemq.message.ConsumerInfo;
    28  import org.codehaus.activemq.service.Dispatcher;
    29  import org.codehaus.activemq.service.MessageContainer;
    30  import org.codehaus.activemq.service.Subscription;
    31  import org.codehaus.activemq.service.SubscriptionContainer;
    32  import org.codehaus.activemq.service.RedeliveryPolicy;
    33  import org.codehaus.activemq.store.PersistenceAdapter;
    34
    35  import javax.jms.DeliveryMode;
    36  import javax.jms.JMSException;
    37  import java.util.Iterator;
    38  import java.util.Set;
    39
    40  /***
    41   * A default implementation of a Broker of Topic messages for transient consumers
    42   *
    43   * @version $Revision: 1.6 $
    44   */
    45  public class TransientTopicMessageContainerManager extends DurableTopicMessageContainerManager {
    46      private static final Log log = LogFactory.getLog(TransientTopicMessageContainerManager.class);
    47
    48      public TransientTopicMessageContainerManager(PersistenceAdapter persistenceAdapter) {
    49          this(persistenceAdapter, new SubscriptionContainerImpl(new RedeliveryPolicy()), new FilterFactoryImpl(), new DispatcherImpl());
    50      }
    51
    52      public TransientTopicMessageContainerManager(PersistenceAdapter persistenceAdapter, SubscriptionContainer subscriptionContainer, FilterFactory filterFactory, Dispatcher dispatcher) {
    53          super(persistenceAdapter, subscriptionContainer, filterFactory, dispatcher);
    54      }
    55
    56      /***
    57       * @param client
    58       * @param info
    59       * @throws javax.jms.JMSException
    60       */
    61      public void addMessageConsumer(BrokerClient client, ConsumerInfo info) throws JMSException {
    62          if (info.getDestination().isTopic()) {
    63              doAddMessageConsumer(client, info);
    64          }
    65      }
    66
    67
    68      /***
    69       * @param client
    70       * @param info
    71       * @throws javax.jms.JMSException
    72       */
    73      public void removeMessageConsumer(BrokerClient client, ConsumerInfo info) throws JMSException {
    74          Subscription sub = (Subscription) activeSubscriptions.remove(info.getConsumerId());
    75          if (sub != null) {
    76              sub.setActive(false);
    77              dispatcher.removeActiveSubscription(client, sub);
    78              subscriptionContainer.removeSubscription(info.getConsumerId());
    79              sub.clear();
    80          }
    81      }
    82
    83
    84      /***
    85       * @param client
    86       * @param message
    87       * @throws javax.jms.JMSException
    88       */
    89      public void sendMessage(BrokerClient client, ActiveMQMessage message) throws JMSException {
    90          ActiveMQDestination destination = message.getJMSActiveMQDestination();
    91          if (destination != null && destination.isTopic()) {
    92              MessageContainer container = null;
    93              if (log.isDebugEnabled()) {
    94                  log.debug("Dispaching to " + subscriptionContainer + " subscriptions with message: " + message);
    95              }
    96              Set subscriptions = subscriptionContainer.getSubscriptions(destination);
    97              for (Iterator i = subscriptions.iterator(); i.hasNext();) {
    98                  Subscription sub = (Subscription) i.next();
    99                  if (sub.isTarget(message) && (!sub.isDurableTopic() || message.getJMSDeliveryMode() == DeliveryMode.NON_PERSISTENT)) {
    100                     if (container == null) {
    101                         container = getContainer(message.getJMSDestination().toString());
    102                         container.addMessage(message);
    103                     }
    104                     sub.addMessage(container, message);
    105                 }
    106             }
    107             updateSendStats(client, message);
    108         }
    109     }
    110
    111     /***
    112      * Delete a durable subscriber
    113      *
    114      * @param clientId
    115      * @param subscriberName
    116      * @throws javax.jms.JMSException if the subscriber doesn't exist or is still active
    117      */
    118     public void deleteSubscription(String clientId, String subscriberName) throws JMSException {
    119     }
    120 }