| /** |
| * 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; |
| } |
| |
| } |