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.util;
  
  import org.apache.activemq.broker.Broker;
  import org.apache.activemq.broker.ConnectionContext;
  import org.apache.activemq.broker.ProducerBrokerExchange;
  import org.apache.activemq.command.ActiveMQDestination;
  import org.apache.activemq.command.Message;
  import org.apache.activemq.command.ProducerInfo;
  import org.apache.activemq.security.SecurityContext;
  import org.apache.activemq.state.ProducerState;
  
  /**
   * Utility class for broker operations
   *
   */
  public final class BrokerSupport {
  
      private BrokerSupport() {
      }
  
      public static void resendNoCopy(final ConnectionContext context, Message originalMessage, ActiveMQDestination deadLetterDestination) throws Exception {
          doResend(context, originalMessage, deadLetterDestination, false);
      }
  
      /**
       * @param context
       * @param originalMessage
       * @param deadLetterDestination
       * @throws Exception
       */
      public static void resend(final ConnectionContext context, Message originalMessage, ActiveMQDestination deadLetterDestination) throws Exception {
          doResend(context, originalMessage, deadLetterDestination, true);
      }
  
      public static void doResend(final ConnectionContext context, Message originalMessage, ActiveMQDestination deadLetterDestination, boolean copy) throws Exception {
          Message message = copy ? originalMessage.copy() : originalMessage;
          message.setOriginalDestination(message.getDestination());
          message.setOriginalTransactionId(message.getTransactionId());
          message.setDestination(deadLetterDestination);
          message.setTransactionId(null);
          message.setMemoryUsage(null);
          message.setRedeliveryCounter(0);
          message.getMessageId().setDataLocator(null);
          boolean originalFlowControl = context.isProducerFlowControl();
          try {
              context.setProducerFlowControl(false);
              ProducerInfo info = new ProducerInfo();
              ProducerState state = new ProducerState(info);
              ProducerBrokerExchange producerExchange = new ProducerBrokerExchange();
              producerExchange.setProducerState(state);
              producerExchange.setMutable(true);
              producerExchange.setConnectionContext(context);
              context.getBroker().send(producerExchange, message);
          } finally {
              context.setProducerFlowControl(originalFlowControl);
          }
      }
  
      /**
       * Returns the broker's administration connection context used for
       * configuring the broker at startup
       */
      public static ConnectionContext getConnectionContext(Broker broker) {
          ConnectionContext adminConnectionContext = broker.getAdminConnectionContext();
          if (adminConnectionContext == null) {
              adminConnectionContext = createAdminConnectionContext(broker);
              broker.setAdminConnectionContext(adminConnectionContext);
          }
          return adminConnectionContext;
      }
  
      /**
       * Factory method to create the new administration connection context
       * object. Note this method is here rather than inside a default broker
       * implementation to ensure that the broker reference inside it is the outer
       * most interceptor
       */
      protected static ConnectionContext createAdminConnectionContext(Broker broker) {
          ConnectionContext context = new ConnectionContext();
          context.setBroker(broker);
          context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
          return context;
      }
  }
  