/**
* 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.geronimo.j2ee.management.impl;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryMXBean;
import java.lang.management.MemoryUsage;
import java.lang.management.RuntimeMXBean;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Date;
import java.util.Hashtable;
import java.util.Properties;
import javax.management.ObjectName;
import javax.management.j2ee.statistics.Stats;
import org.apache.geronimo.gbean.GBeanInfo;
import org.apache.geronimo.gbean.GBeanInfoBuilder;
import org.apache.geronimo.j2ee.j2eeobjectnames.NameFactory;
import org.apache.geronimo.kernel.Kernel;
import org.apache.geronimo.kernel.ObjectNameUtil;
import org.apache.geronimo.management.StatisticsProvider;
import org.apache.geronimo.management.geronimo.JVM;
import org.apache.geronimo.management.stats.BoundedRangeStatisticImpl;
import org.apache.geronimo.management.stats.CountStatisticImpl;
import org.apache.geronimo.management.stats.JVMStatsImpl;
import org.apache.geronimo.transformer.TransformerAgent;
import org.apache.geronimo.logging.SystemLog;
/**
*
*
* @version $Rev: 1213810 $ $Date: 2011-12-14 02:00:08 +0800 (Wed, 14 Dec 2011) $
*/
public class JVMImpl implements JVM, StatisticsProvider {
public static final String JAVA_VERSION = System.getProperty("java.version");
public static final String JAVA_VENDOR = System.getProperty("java.vendor");
public static final String NODE;
private static final Runtime runtime = Runtime.getRuntime();
static {
String node;
try {
node = InetAddress.getLocalHost().toString();
} catch (UnknownHostException e) {
node = null;
}
NODE = node;
}
private final String objectName;
private final Kernel kernel;
private final SystemLog systemLog;
private JVMStatsImpl stats;
public JVMImpl(String objectName, Kernel kernel, SystemLog systemLog) {
this.objectName = objectName;
this.kernel = kernel;
this.systemLog = systemLog;
ObjectName myObjectName = ObjectNameUtil.getObjectName(this.objectName);
verifyObjectName(myObjectName);
}
/**
* ObjectName must match this pattern:
* <p/>
* domain:j2eeType=JVM,name=MyName
*/
private void verifyObjectName(ObjectName objectName) {
if (objectName.isPattern()) {
throw new InvalidObjectNameException("ObjectName can not be a pattern", objectName);
}
Hashtable keyPropertyList = objectName.getKeyPropertyList();
if (!"JVM".equals(keyPropertyList.get("j2eeType"))) {
throw new InvalidObjectNameException("JVM object name j2eeType property must be 'JVM'", objectName);
}
if (!keyPropertyList.containsKey("name")) {
throw new InvalidObjectNameException("JVM object must contain a name property", objectName);
}
if (!keyPropertyList.containsKey("J2EEServer")) {
throw new InvalidObjectNameException("JVM object must contain a J2EEServer property", objectName);
}
if (keyPropertyList.size() != 3) {
throw new InvalidObjectNameException("JVM object name can only have J2EEServer, j2eeType, and name", objectName);
}
}
public String getObjectName() {
return objectName;
}
public boolean isStateManageable() {
return true;
}
public boolean isStatisticsProvider() {
return true;
}
public boolean isEventProvider() {
return true;
}
/**
* The version of the JVMImpl we are running on.
* This is the value of java.version system property
* @see "JSR77.3.4.1.1"
* @return the JVMImpl version
*/
public String getJavaVersion() {
return JAVA_VERSION;
}
/**
* The vendor of the JVMImpl we are running on.
* This is the value of java.vendor system property
* @see "JSR77.3.4.1.2"
* @return the JVMImpl version
*/
public String getJavaVendor() {
return JAVA_VENDOR;
}
/**
* The node we are running on.
* This is the fully qualified host name returned for InetAddress.getLocalHost.toString();
* we return null if there is no network
* @see "JSR77.3.4.1.3"
* @return the node we are running on
*/
public String getNode() {
return NODE;
}
public int getAvailableProcessors() {
return runtime.availableProcessors();
}
public Date getKernelBootTime() {
return kernel.getBootTime();
}
public Stats getStats() {
RuntimeMXBean runmxbean = ManagementFactory.getRuntimeMXBean();
MemoryMXBean memmxbean = ManagementFactory.getMemoryMXBean();
MemoryUsage memUsage = memmxbean.getHeapMemoryUsage();
CountStatisticImpl upTime;
BoundedRangeStatisticImpl heapSize;
if (stats == null) {
stats = new JVMStatsImpl();
// setup UpTime CountStatistic
upTime = stats.getUpTimeImpl();
upTime.setStartTime(runmxbean.getStartTime());
upTime.setCount(runmxbean.getUptime());
// setup Heap BoundedRangeStatistic
heapSize = stats.getHeapSizeImpl();
heapSize.setStartTime(runmxbean.getStartTime());
heapSize.setBounds(0, memUsage.getMax());
heapSize.setCurrent(memUsage.getUsed());
heapSize.setLowWaterMark(memUsage.getUsed());
heapSize.setHighWaterMark(memUsage.getUsed());
} else {
// update UpTime CountStatistic
upTime = stats.getUpTimeImpl();
upTime.setCount(runmxbean.getUptime());
// update Heap BoundedRangeStatistic
heapSize = stats.getHeapSizeImpl();
heapSize.setBounds(0, memUsage.getMax());
heapSize.setCurrent(memUsage.getUsed());
}
long now = upTime.getStartTime() + upTime.getCount();
upTime.setLastSampleTime(now);
heapSize.setLastSampleTime(now);
return stats;
}
public void resetStats() {
// TODO
}
public Properties getSystemProperties() {
return System.getProperties();
}
public SystemLog getSystemLog() {
return systemLog;
}
public boolean isRedefineClassesSupported() {
return TransformerAgent.isRedefineClassesSupported();
}
public static final GBeanInfo GBEAN_INFO;
static {
GBeanInfoBuilder infoFactory = GBeanInfoBuilder.createStatic(JVMImpl.class, NameFactory.JVM);
infoFactory.addReference("SystemLog", SystemLog.class);
infoFactory.setConstructor(new String[] {"objectName", "kernel", "SystemLog"});
GBEAN_INFO = infoFactory.getBeanInfo();
}
public static GBeanInfo getGBeanInfo() {
return GBEAN_INFO;
}
}