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;
  
  import java.util.LinkedHashMap;
  import org.apache.activemq.command.ActiveMQDestination;
  import org.apache.activemq.command.Message;
  import org.apache.activemq.util.LRUCache;
  
  /**
   * An auditor class for a Connection that looks for duplicates
   */
  class ConnectionAudit {
  
      private boolean checkForDuplicates;
      private LinkedHashMap<ActiveMQDestination, ActiveMQMessageAudit> destinations = new LRUCache<ActiveMQDestination, ActiveMQMessageAudit>(1000);
      private LinkedHashMap<ActiveMQDispatcher, ActiveMQMessageAudit> dispatchers = new LRUCache<ActiveMQDispatcher, ActiveMQMessageAudit>(1000);
  
      
  	private int auditDepth = ActiveMQMessageAudit.DEFAULT_WINDOW_SIZE;
  	private int auditMaximumProducerNumber = ActiveMQMessageAudit.MAXIMUM_PRODUCER_COUNT;
  	
  	
      synchronized void removeDispatcher(ActiveMQDispatcher dispatcher) {
          dispatchers.remove(dispatcher);
      }
  
      synchronized boolean isDuplicate(ActiveMQDispatcher dispatcher, Message message) {
          if (checkForDuplicates && message != null) {
              ActiveMQDestination destination = message.getDestination();
              if (destination != null) {
                  if (destination.isQueue()) {
                      ActiveMQMessageAudit audit = destinations.get(destination);
                      if (audit == null) {
                          audit = new ActiveMQMessageAudit(auditDepth, auditMaximumProducerNumber);
                          destinations.put(destination, audit);
                      }
                      boolean result = audit.isDuplicate(message);
                      return result;
                  }
                  ActiveMQMessageAudit audit = dispatchers.get(dispatcher);
                  if (audit == null) {
                      audit = new ActiveMQMessageAudit(auditDepth, auditMaximumProducerNumber);
                      dispatchers.put(dispatcher, audit);
                  }
                  boolean result = audit.isDuplicate(message);
                  return result;
              }
          }
          return false;
      }
  
      protected synchronized void rollbackDuplicate(ActiveMQDispatcher dispatcher, Message message) {
          if (checkForDuplicates && message != null) {
              ActiveMQDestination destination = message.getDestination();
              if (destination != null) {
                  if (destination.isQueue()) {
                      ActiveMQMessageAudit audit = destinations.get(destination);
                      if (audit != null) {
                          audit.rollback(message);
                      }
                  } else {
                      ActiveMQMessageAudit audit = dispatchers.get(dispatcher);
                      if (audit != null) {
                          audit.rollback(message);
                      }
                  }
              }
          }
      }
  
      /**
       * @return the checkForDuplicates
       */
      boolean isCheckForDuplicates() {
          return this.checkForDuplicates;
      }
  
      /**
       * @param checkForDuplicates the checkForDuplicates to set
       */
      void setCheckForDuplicates(boolean checkForDuplicates) {
          this.checkForDuplicates = checkForDuplicates;
      }
  
  	public int getAuditDepth() {
  		return auditDepth;
  	}
  
  	public void setAuditDepth(int auditDepth) {
  		this.auditDepth = auditDepth;
  	}
  
  	public int getAuditMaximumProducerNumber() {
  		return auditMaximumProducerNumber;
  	}
  
  	public void setAuditMaximumProducerNumber(int auditMaximumProducerNumber) {
  		this.auditMaximumProducerNumber = auditMaximumProducerNumber;
  	}
      
  }
  