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 package org.apache.activemq.broker.jmx;
018
019 import javax.management.openmbean.CompositeData;
020 import javax.management.openmbean.OpenDataException;
021 import javax.management.openmbean.TabularData;
022
023 import org.apache.activemq.broker.ConnectionContext;
024 import org.apache.activemq.broker.region.DurableTopicSubscription;
025 import org.apache.activemq.broker.region.Subscription;
026 import org.apache.activemq.command.RemoveSubscriptionInfo;
027
028 /**
029 *
030 */
031 public class DurableSubscriptionView extends SubscriptionView implements DurableSubscriptionViewMBean {
032
033 protected ManagedRegionBroker broker;
034 protected String subscriptionName;
035 protected DurableTopicSubscription durableSub;
036
037 /**
038 * Constructor
039 *
040 * @param clientId
041 * @param sub
042 */
043 public DurableSubscriptionView(ManagedRegionBroker broker, String clientId, String userName, Subscription sub) {
044 super(clientId, userName, sub);
045 this.broker = broker;
046 this.durableSub=(DurableTopicSubscription) sub;
047 if (sub != null) {
048 this.subscriptionName = sub.getConsumerInfo().getSubscriptionName();
049 }
050 }
051
052 /**
053 * @return name of the durable consumer
054 */
055 public String getSubscriptionName() {
056 return subscriptionName;
057 }
058
059 /**
060 * Browse messages for this durable subscriber
061 *
062 * @return messages
063 * @throws OpenDataException
064 */
065 public CompositeData[] browse() throws OpenDataException {
066 return broker.browse(this);
067 }
068
069 /**
070 * Browse messages for this durable subscriber
071 *
072 * @return messages
073 * @throws OpenDataException
074 */
075 public TabularData browseAsTable() throws OpenDataException {
076 return broker.browseAsTable(this);
077 }
078
079 /**
080 * Destroys the durable subscription so that messages will no longer be
081 * stored for this subscription
082 */
083 public void destroy() throws Exception {
084 RemoveSubscriptionInfo info = new RemoveSubscriptionInfo();
085 info.setClientId(clientId);
086 info.setSubscriptionName(subscriptionName);
087 ConnectionContext context = new ConnectionContext();
088 context.setBroker(broker);
089 context.setClientId(clientId);
090 broker.removeSubscription(context, info);
091 }
092
093 public String toString() {
094 return "ActiveDurableSubscriptionView: " + getClientId() + ":" + getSubscriptionName();
095 }
096
097
098 public int cursorSize() {
099 if (durableSub != null && durableSub.getPending() != null) {
100 return durableSub.getPending().size();
101 }
102 return 0;
103 }
104
105
106 public boolean doesCursorHaveMessagesBuffered() {
107 if (durableSub != null && durableSub.getPending() != null) {
108 return durableSub.getPending().hasMessagesBufferedToDeliver();
109 }
110 return false;
111 }
112
113
114 public boolean doesCursorHaveSpace() {
115 if (durableSub != null && durableSub.getPending() != null) {
116 return durableSub.getPending().hasSpace();
117 }
118 return false;
119 }
120
121 /* (non-Javadoc)
122 * @see org.apache.activemq.broker.jmx.DurableSubscriptionViewMBean#getCursorMemoryUsage()
123 */
124 public long getCursorMemoryUsage() {
125 if (durableSub != null && durableSub.getPending() != null && durableSub.getPending().getSystemUsage()!=null) {
126 return durableSub.getPending().getSystemUsage().getMemoryUsage().getUsage();
127 }
128 return 0;
129 }
130
131
132 public int getCursorPercentUsage() {
133 if (durableSub != null && durableSub.getPending() != null && durableSub.getPending().getSystemUsage()!=null) {
134 return durableSub.getPending().getSystemUsage().getMemoryUsage().getPercentUsage();
135 }
136 return 0;
137 }
138
139 public boolean isCursorFull() {
140 if (durableSub != null && durableSub.getPending() != null) {
141 return durableSub.getPending().isFull();
142 }
143 return false;
144 }
145
146 @Override
147 public boolean isActive() {
148 return durableSub.isActive();
149 }
150
151
152 }