/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.uima.ducc.agent.metrics.collectors;
import java.util.Set;
import javax.management.MBeanServerConnection;
import javax.management.ObjectInstance;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import org.apache.uima.ducc.common.node.metrics.ProcessGarbageCollectionStats;
import org.apache.uima.ducc.common.utils.DuccLogger;
import org.apache.uima.ducc.transport.event.common.IDuccProcess;
public class DuccGarbageStatsCollector {
MBeanServerConnection connection = null;
DuccLogger logger=null;
IDuccProcess process=null;
public DuccGarbageStatsCollector(DuccLogger logger,IDuccProcess process) {
this.logger = logger;
this.process = process;
try {
if (process != null && process.getProcessJmxUrl() != null && process.getProcessJmxUrl().trim().length() > 0 ) {
connection = getServerConnection();
}
} catch( Exception e) {
logger.error("DuccGarbageStatsCollector.ctor", null,e);
logger.error("DuccGarbageStatsCollector.ctor", null, "Failed to Connect via JMX to PID:"+process.getPID()+" Reason:\n"+e);
}
}
private MBeanServerConnection getServerConnection() throws Exception {
System.out.println("Connecting Monitor To Broker - URL:"+process.getProcessJmxUrl());
JMXServiceURL url = new JMXServiceURL(process.getProcessJmxUrl());
JMXConnector jmxc = JMXConnectorFactory.connect(url, null);
return jmxc.getMBeanServerConnection();
}
public ProcessGarbageCollectionStats collect() {
ProcessGarbageCollectionStats gcStats =
new ProcessGarbageCollectionStats();
if ( connection != null) {
try {
Set<ObjectInstance> mbeans=
connection.queryMBeans(new ObjectName("java.lang:type=GarbageCollector,*"),null );
Long totalCollectionCount= new Long(0);
Long totalCollectionTime=new Long(0);
for( ObjectInstance gcObject : mbeans) {
String gcCollectorName = gcObject.getObjectName().getCanonicalKeyPropertyListString();
ObjectName memoryManagerMXBean =
new ObjectName("java.lang:" + gcCollectorName);
totalCollectionCount =+ (Long) connection.getAttribute(memoryManagerMXBean,"CollectionCount");
totalCollectionTime =+ (Long) connection.getAttribute(memoryManagerMXBean,"CollectionTime");
}
// Returns the total number of collections that have occurred.
gcStats.setCollectionCount(totalCollectionCount);
// Returns the approximate accumulated collection elapsed time in milliseconds.
gcStats.setCollectionTime(totalCollectionTime);
} catch( Exception e) {
logger.error("", null, "Failed to Fetch JMX GC Stats From PID:"+process.getPID()+" Reason:\n"+e);
}
// List<GarbageCollectorMXBean> gcmb = ManagementFactory.getGarbageCollectorMXBeans();
// for( GarbageCollectorMXBean gcBean : gcmb ) {
// gcStats.setMemoryManagerName(gcBean.getName());
// // Returns the total number of collections that have occurred.
// gcStats.setCollectionCount(gcBean.getCollectionCount());
// // Returns the approximate accumulated collection elapsed time in milliseconds.
// gcStats.setCollectionTime(gcBean.getCollectionTime());
//}
}
return gcStats;
}
}