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     * Creates a CounterMonitor for jmx attributes
034     *
035     * @version $Revision: 640438 $
036     */
037    public class JMXEndpoint extends DefaultEndpoint<JMXExchange> {
038    
039        private static final Log LOG = LogFactory.getLog(JMXEndpoint.class);
040        private String name;
041        private ObjectName ourName;
042        private String observedObjectName;
043        private String attributeName;
044        private long granularityPeriod = 5000;
045        private Number threshold;
046        private Number offset;
047        private MBeanServer mbeanServer;
048        private CounterMonitor counterMonitor = new CounterMonitor();
049    
050        protected JMXEndpoint(String endpointUri, JMXComponent component) {
051            super(endpointUri, component);
052            observedObjectName = endpointUri;
053        }
054    
055        /**
056         * @return a Producer
057         * @throws Exception
058         * @see org.apache.camel.Endpoint#createProducer()
059         */
060        public Producer<JMXExchange> createProducer() throws Exception {
061            throw new RuntimeException("Not supported");
062        }
063    
064        /**
065         * @param proc
066         * @return a Consumer
067         * @throws Exception
068         * @see org.apache.camel.Endpoint#createConsumer(org.apache.camel.Processor)
069         */
070        public Consumer<JMXExchange> createConsumer(Processor proc) throws Exception {
071            ObjectName observedName = new ObjectName(observedObjectName);
072            if (name == null) {
073                String type = observedName.getKeyProperty("type");
074                type = type != null ? type : "UNKNOWN";
075                name = mbeanServer.getDefaultDomain() + ":type=CounterMonitor_" + type;
076            }
077            JMXConsumer result = new JMXConsumer(this, proc);
078            ourName = new ObjectName(name);
079            counterMonitor.setNotify(true);
080            counterMonitor.addObservedObject(observedName);
081            counterMonitor.setObservedAttribute(attributeName);
082            counterMonitor.setGranularityPeriod(granularityPeriod);
083            counterMonitor.setDifferenceMode(false);
084            counterMonitor.setInitThreshold(threshold);
085            counterMonitor.setOffset(offset);
086            mbeanServer.registerMBean(counterMonitor, ourName);
087            mbeanServer.addNotificationListener(ourName, result, null, new Object());
088            return result;
089        }
090    
091        public boolean isSingleton() {
092            return true;
093        }
094    
095        public JMXExchange createExchange(Notification notification) {
096            return new JMXExchange(getContext(), getExchangePattern(), notification);
097        }
098    
099        public JMXExchange createExchange() {
100            return new JMXExchange(getContext(), getExchangePattern(), null);
101        }
102    
103        public JMXExchange createExchange(ExchangePattern pattern) {
104            return new JMXExchange(getContext(), pattern, null);
105        }
106    
107        public String getAttributeName() {
108            return attributeName;
109        }
110    
111        public void setAttributeName(String attributeName) {
112            this.attributeName = attributeName;
113        }
114    
115        public long getGranularityPeriod() {
116            return granularityPeriod;
117        }
118    
119        public void setGranularityPeriod(long granularityPeriod) {
120            this.granularityPeriod = granularityPeriod;
121        }
122    
123        public String getName() {
124            return name;
125        }
126    
127        public void setName(String name) {
128            this.name = name;
129        }
130    
131        public Number getOffset() {
132            return offset;
133        }
134    
135        public void setOffset(Number offset) {
136            this.offset = offset;
137        }
138    
139        public Number getThreshold() {
140            return threshold;
141        }
142    
143        public void setThreshold(Number threshold) {
144            this.threshold = threshold;
145        }
146    
147        public MBeanServer getMbeanServer() {
148            return mbeanServer;
149        }
150    
151        public void setMbeanServer(MBeanServer mbeanServer) {
152            this.mbeanServer = mbeanServer;
153        }
154    }