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.camel.component.jmx; 018 019 import javax.management.MBeanServer; 020 import javax.management.Notification; 021 import javax.management.ObjectName; 022 import javax.management.monitor.CounterMonitor; 023 024 import org.apache.camel.Consumer; 025 import org.apache.camel.ExchangePattern; 026 import org.apache.camel.Processor; 027 import org.apache.camel.Producer; 028 import org.apache.camel.impl.DefaultEndpoint; 029 import org.apache.commons.logging.Log; 030 import org.apache.commons.logging.LogFactory; 031 032 /** 033 * JMXEndpoint for monitoring JMX attributs using {@link CounterMonitor}. 034 * 035 * @version $Revision: 41910 $ 036 */ 037 public class JMXEndpoint extends DefaultEndpoint<JMXExchange> { 038 private static final transient Log LOG = LogFactory.getLog(JMXEndpoint.class); 039 private String name; 040 private ObjectName ourName; 041 private String observedObjectName; 042 private String attributeName; 043 private long granularityPeriod = 5000; 044 private Number threshold; 045 private Number offset; 046 private MBeanServer mbeanServer; 047 private CounterMonitor counterMonitor = new CounterMonitor(); 048 049 protected JMXEndpoint(String endpointUri, JMXComponent component) { 050 super(endpointUri, component); 051 observedObjectName = endpointUri; 052 } 053 054 public JMXEndpoint(String endpointUri) { 055 super(endpointUri); 056 } 057 058 public Producer<JMXExchange> createProducer() throws Exception { 059 throw new UnsupportedOperationException("Producer not supported"); 060 } 061 062 public Consumer<JMXExchange> createConsumer(Processor proc) throws Exception { 063 ObjectName observedName = new ObjectName(observedObjectName); 064 if (name == null) { 065 String type = observedName.getKeyProperty("type"); 066 type = type != null ? type : "UNKNOWN"; 067 name = mbeanServer.getDefaultDomain() + ":type=CounterMonitor_" + type; 068 } 069 070 JMXConsumer result = new JMXConsumer(this, proc); 071 ourName = new ObjectName(name); 072 counterMonitor.setNotify(true); 073 counterMonitor.addObservedObject(observedName); 074 counterMonitor.setObservedAttribute(attributeName); 075 counterMonitor.setGranularityPeriod(granularityPeriod); 076 counterMonitor.setDifferenceMode(false); 077 counterMonitor.setInitThreshold(threshold); 078 counterMonitor.setOffset(offset); 079 080 if (LOG.isDebugEnabled()) { 081 LOG.debug("Registering and adding notification listener for [" + counterMonitor + "] with name [" + ourName + "]"); 082 } 083 mbeanServer.registerMBean(counterMonitor, ourName); 084 // TODO: How do we remove the listener? 085 mbeanServer.addNotificationListener(ourName, result, null, new Object()); 086 return result; 087 } 088 089 public boolean isSingleton() { 090 return true; 091 } 092 093 public JMXExchange createExchange(Notification notification) { 094 return new JMXExchange(getCamelContext(), getExchangePattern(), notification); 095 } 096 097 public JMXExchange createExchange() { 098 return new JMXExchange(getCamelContext(), getExchangePattern(), null); 099 } 100 101 public JMXExchange createExchange(ExchangePattern pattern) { 102 return new JMXExchange(getCamelContext(), pattern, null); 103 } 104 105 public String getAttributeName() { 106 return attributeName; 107 } 108 109 public void setAttributeName(String attributeName) { 110 this.attributeName = attributeName; 111 } 112 113 public long getGranularityPeriod() { 114 return granularityPeriod; 115 } 116 117 public void setGranularityPeriod(long granularityPeriod) { 118 this.granularityPeriod = granularityPeriod; 119 } 120 121 public String getName() { 122 return name; 123 } 124 125 public void setName(String name) { 126 this.name = name; 127 } 128 129 public Number getOffset() { 130 return offset; 131 } 132 133 public void setOffset(Number offset) { 134 this.offset = offset; 135 } 136 137 public Number getThreshold() { 138 return threshold; 139 } 140 141 public void setThreshold(Number threshold) { 142 this.threshold = threshold; 143 } 144 145 public MBeanServer getMbeanServer() { 146 return mbeanServer; 147 } 148 149 public void setMbeanServer(MBeanServer mbeanServer) { 150 this.mbeanServer = mbeanServer; 151 } 152 }