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 */ 017 018package org.apache.activemq.store; 019 020import java.util.concurrent.ConcurrentHashMap; 021import java.util.concurrent.ConcurrentMap; 022 023import org.apache.activemq.management.CountStatisticImpl; 024import org.apache.activemq.management.SizeStatisticImpl; 025 026public class MessageStoreSubscriptionStatistics extends AbstractMessageStoreStatistics { 027 028 private final ConcurrentMap<String, SubscriptionStatistics> subStatistics 029 = new ConcurrentHashMap<>(); 030 031 /** 032 * @param enabled 033 * @param countDescription 034 * @param sizeDescription 035 */ 036 public MessageStoreSubscriptionStatistics(boolean enabled) { 037 super(enabled, "The number of messages or this subscription in the message store", 038 "Size of messages contained by this subscription in the message store"); 039 } 040 041 /** 042 * Total count for all subscriptions 043 */ 044 @Override 045 public CountStatisticImpl getMessageCount() { 046 return this.messageCount; 047 } 048 049 /** 050 * Total size for all subscriptions 051 */ 052 @Override 053 public SizeStatisticImpl getMessageSize() { 054 return this.messageSize; 055 } 056 057 public CountStatisticImpl getMessageCount(String subKey) { 058 return getOrInitStatistics(subKey).getMessageCount(); 059 } 060 061 public SizeStatisticImpl getMessageSize(String subKey) { 062 return getOrInitStatistics(subKey).getMessageSize(); 063 } 064 065 public void removeSubscription(String subKey) { 066 SubscriptionStatistics subStats = subStatistics.remove(subKey); 067 //Subtract from the parent 068 if (subStats != null) { 069 getMessageCount().subtract(subStats.getMessageCount().getCount()); 070 getMessageSize().addSize(-subStats.getMessageSize().getTotalSize()); 071 } 072 } 073 074 @Override 075 public void reset() { 076 super.reset(); 077 subStatistics.clear(); 078 } 079 080 private SubscriptionStatistics getOrInitStatistics(String subKey) { 081 SubscriptionStatistics subStats = subStatistics.get(subKey); 082 083 if (subStats == null) { 084 final SubscriptionStatistics stats = new SubscriptionStatistics(); 085 subStats = subStatistics.putIfAbsent(subKey, stats); 086 if (subStats == null) { 087 subStats = stats; 088 } 089 } 090 091 return subStats; 092 } 093 094 private class SubscriptionStatistics extends AbstractMessageStoreStatistics { 095 096 public SubscriptionStatistics() { 097 this(MessageStoreSubscriptionStatistics.this.enabled); 098 } 099 100 /** 101 * @param enabled 102 * @param countDescription 103 * @param sizeDescription 104 */ 105 public SubscriptionStatistics(boolean enabled) { 106 super(enabled, "The number of messages or this subscription in the message store", 107 "Size of messages contained by this subscription in the message store"); 108 this.setParent(MessageStoreSubscriptionStatistics.this); 109 } 110 } 111 112}