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;
  
  import java.util.ArrayList;
  import java.util.List;
  import org.apache.activemq.broker.region.Destination;
  import org.apache.activemq.broker.region.Subscription;
  import org.apache.activemq.command.ActiveMQDestination;
  import org.apache.activemq.command.BrokerInfo;
  import org.apache.activemq.command.ConnectionInfo;
  import org.apache.activemq.command.ConsumerInfo;
  import org.apache.activemq.command.Message;
  import org.apache.activemq.command.MessageAck;
  import org.apache.activemq.command.ProducerInfo;
  import org.apache.activemq.command.RemoveSubscriptionInfo;
  import org.apache.activemq.command.SessionInfo;
  import org.apache.activemq.command.TransactionId;
  
  /**
   * Used to add listeners for Broker actions
   * 
   * 
   */
  public class BrokerBroadcaster extends BrokerFilter {
      protected volatile Broker[] listeners = new Broker[0];
  
      public BrokerBroadcaster(Broker next) {
          super(next);
      }
  
      @Override
      public void acknowledge(ConsumerBrokerExchange consumerExchange, MessageAck ack) throws Exception {
          next.acknowledge(consumerExchange, ack);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].acknowledge(consumerExchange, ack);
          }
      }
  
      @Override
      public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception {
          next.addConnection(context, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].addConnection(context, info);
          }
      }
  
      @Override
      public Subscription addConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
          Subscription answer = next.addConsumer(context, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].addConsumer(context, info);
          }
          return answer;
      }
  
      @Override
      public void addProducer(ConnectionContext context, ProducerInfo info) throws Exception {
          next.addProducer(context, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].addProducer(context, info);
          }
      }
  
      @Override
      public void commitTransaction(ConnectionContext context, TransactionId xid, boolean onePhase) throws Exception {
          next.commitTransaction(context, xid, onePhase);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].commitTransaction(context, xid, onePhase);
          }
      }
  
      @Override
      public void removeSubscription(ConnectionContext context, RemoveSubscriptionInfo info) throws Exception {
          next.removeSubscription(context, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].removeSubscription(context, info);
          }
      }
  
      @Override
      public int prepareTransaction(ConnectionContext context, TransactionId xid) throws Exception {
          int result = next.prepareTransaction(context, xid);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              // TODO decide what to do with return values
              brokers[i].prepareTransaction(context, xid);
          }
          return result;
      }
  
      @Override
      public void removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error) throws Exception {
          next.removeConnection(context, info, error);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].removeConnection(context, info, error);
          }
      }
  
      @Override
      public void removeConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
          next.removeConsumer(context, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].removeConsumer(context, info);
          }
      }
  
      @Override
      public void removeProducer(ConnectionContext context, ProducerInfo info) throws Exception {
          next.removeProducer(context, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].removeProducer(context, info);
          }
      }
  
      @Override
      public void rollbackTransaction(ConnectionContext context, TransactionId xid) throws Exception {
          next.rollbackTransaction(context, xid);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].rollbackTransaction(context, xid);
          }
      }
  
      @Override
      public void send(ProducerBrokerExchange producerExchange, Message messageSend) throws Exception {
          next.send(producerExchange, messageSend);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].send(producerExchange, messageSend);
          }
      }
  
      @Override
      public void beginTransaction(ConnectionContext context, TransactionId xid) throws Exception {
          next.beginTransaction(context, xid);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].beginTransaction(context, xid);
          }
      }
  
      @Override
      public void forgetTransaction(ConnectionContext context, TransactionId transactionId) throws Exception {
          next.forgetTransaction(context, transactionId);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].forgetTransaction(context, transactionId);
          }
      }
  
      @Override
      public Destination addDestination(ConnectionContext context, ActiveMQDestination destination,boolean createIfTemporary) throws Exception {
          Destination result = next.addDestination(context, destination,createIfTemporary);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].addDestination(context, destination,createIfTemporary);
          }
          return result;
      }
  
      @Override
      public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception {
          next.removeDestination(context, destination, timeout);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].removeDestination(context, destination, timeout);
          }
      }
  
      @Override
      public void start() throws Exception {
          next.start();
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].start();
          }
      }
  
      @Override
      public void stop() throws Exception {
          next.stop();
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].stop();
          }
      }
  
      @Override
      public void addSession(ConnectionContext context, SessionInfo info) throws Exception {
          next.addSession(context, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].addSession(context, info);
          }
      }
  
      @Override
      public void removeSession(ConnectionContext context, SessionInfo info) throws Exception {
          next.removeSession(context, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].removeSession(context, info);
          }
      }
  
      @Override
      public void gc() {
          next.gc();
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].gc();
          }
      }
  
      @Override
      public void addBroker(Connection connection, BrokerInfo info) {
          next.addBroker(connection, info);
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              brokers[i].addBroker(connection, info);
          }
      }
  
      protected Broker[] getListeners() {
          return listeners;
      }
  
      public synchronized void addListener(Broker broker) {
          List<Broker> tmp = getListenersAsList();
          tmp.add(broker);
          listeners = tmp.toArray(new Broker[tmp.size()]);
      }
  
      public synchronized void removeListener(Broker broker) {
          List<Broker> tmp = getListenersAsList();
          tmp.remove(broker);
          listeners = tmp.toArray(new Broker[tmp.size()]);
      }
  
      protected List<Broker> getListenersAsList() {
          List<Broker> tmp = new ArrayList<Broker>();
          Broker brokers[] = getListeners();
          for (int i = 0; i < brokers.length; i++) {
              tmp.add(brokers[i]);
          }
          return tmp;
      }
  }
  