content: /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.activemq.broker.region.policy;
  
  import java.util.List;
  
  import org.apache.activemq.broker.region.MessageReference;
  import org.apache.activemq.broker.region.Subscription;
  import org.apache.activemq.command.ActiveMQDestination;
  import org.apache.activemq.filter.MessageEvaluationContext;
  
  /**
   * ClientIdFilterDispatchPolicy dispatches messages in a topic to a given
   * client. Then the message with a "PTP_CLIENTID" property, can be received by a
   * mqtt client with the same clientId.
   *
   * @author kimmking (kimmking@163.com)
   * @date 2013-12-20
   * @org.apache.xbean.XBean
   */
  public class ClientIdFilterDispatchPolicy extends SimpleDispatchPolicy {
  
      public static final String PTP_CLIENTID = "PTP_CLIENTID";
      public static final String PTP_SUFFIX = ".PTP";
  
      private String ptpClientId = PTP_CLIENTID;
      private String ptpSuffix = PTP_SUFFIX;
  
      public boolean dispatch(MessageReference node, MessageEvaluationContext msgContext, List<Subscription> consumers) throws Exception {
  
          Object _clientId = node.getMessage().getProperty(ptpClientId);
          if (_clientId == null) return super.dispatch(node, msgContext, consumers);
  
          ActiveMQDestination _destination = node.getMessage().getDestination();
          int count = 0;
          for (Subscription sub : consumers) {
              // Don't deliver to browsers
              if (sub.getConsumerInfo().isBrowser()) {
                  continue;
              }
              // Only dispatch to interested subscriptions
              if (!sub.matches(node, msgContext)) {
                  sub.unmatched(node);
                  continue;
              }
              if (_clientId != null && _destination.isTopic() && _clientId.equals(sub.getContext().getClientId())
                      && _destination.getQualifiedName().endsWith(this.ptpSuffix)) {
                  sub.add(node);
                  count++;
              } else {
                  sub.unmatched(node);
              }
          }
  
          return count > 0;
      }
  
      public String getPtpClientId() {
          return ptpClientId;
      }
  
      public void setPtpClientId(String ptpClientId) {
          this.ptpClientId = ptpClientId;
      }
  
      public String getPtpSuffix() {
          return ptpSuffix;
      }
  
      public void setPtpSuffix(String ptpSuffix) {
          this.ptpSuffix = ptpSuffix;
      }
  
  }