001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.activemq.broker.jmx; 018 019import org.apache.activemq.broker.region.DurableTopicSubscription; 020import org.apache.activemq.broker.region.TopicSubscription; 021 022/** 023 * 024 * 025 */ 026public class TopicSubscriptionView extends SubscriptionView implements TopicSubscriptionViewMBean { 027 028 public TopicSubscriptionView(String clientId, TopicSubscription subs) { 029 super(clientId, subs); 030 } 031 032 protected TopicSubscription getTopicSubscription() { 033 return (TopicSubscription)subscription; 034 } 035 036 /** 037 * @return the number of messages discarded due to being a slow consumer 038 */ 039 public int getDiscardedCount() { 040 TopicSubscription topicSubscription = getTopicSubscription(); 041 return topicSubscription != null ? topicSubscription.discarded() : 0; 042 } 043 044 /** 045 * @return the maximun number of messages that can be pending. 046 */ 047 public int getMaximumPendingQueueSize() { 048 TopicSubscription topicSubscription = getTopicSubscription(); 049 return topicSubscription != null ? topicSubscription.getMaximumPendingMessages() : 0; 050 } 051 052 /** 053 * 054 */ 055 public void setMaximumPendingQueueSize(int max) { 056 TopicSubscription topicSubscription = getTopicSubscription(); 057 if (topicSubscription != null) { 058 topicSubscription.setMaximumPendingMessages(max); 059 } 060 } 061 062 @Override 063 public boolean isActive() { 064 if (subscription instanceof DurableTopicSubscription) { 065 return ((DurableTopicSubscription)subscription).isActive(); 066 } else { 067 return super.isActive(); 068 } 069 } 070 071 072 073}