/**
*
* Copyright 2003-2004 The Apache Software Foundation
*
* Licensed 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.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Date;
import java.util.Properties;
import java.util.Hashtable;
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.management.geronimo.JVM;
import org.apache.geronimo.management.StatisticsProvider;
import org.apache.geronimo.management.stats.JVMStatsImpl;
import org.apache.geronimo.management.stats.BoundedRangeImpl;
import org.apache.geronimo.kernel.Kernel;
import org.apache.geronimo.kernel.jmx.JMXUtil;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;
/**
*
*
* @version $Rev: 278800 $ $Date: 2005-09-05 11:10:49 -0600 (Mon, 05 Sep 2005) $
*/
public class JVMImpl implements JVM, StatisticsProvider {
private final static Log log = LogFactory.getLog(JVMImpl.class);
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 String baseName;
private JVMStatsImpl stats;
public JVMImpl(String objectName, Kernel kernel) {
this.objectName = objectName;
this.kernel = kernel;
ObjectName myObjectName = JMXUtil.getObjectName(this.objectName);
verifyObjectName(myObjectName);
// build the base name used to query the server for related modules
Hashtable keyPropertyList = myObjectName.getKeyPropertyList();
String serverName = (String) keyPropertyList.get("J2EEServer");
baseName = myObjectName.getDomain() + ":J2EEServer=" + serverName + ",";
}
/**
* 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("J2EEServer 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() {
BoundedRangeImpl heap;
if(stats == null) {
stats = new JVMStatsImpl();
long start = kernel.getBootTime().getTime();
stats.getUpTimeImpl().setCount(start);
stats.getUpTimeImpl().setStartTime(start);
heap = stats.getHeapSizeImpl();
heap.setStartTime(start);
heap.setBounds(0, runtime.totalMemory());
heap.setCurrent(heap.getUpperBound() - runtime.freeMemory());
heap.setLowWaterMark(heap.getCurrent());
heap.setHighWaterMark(heap.getCurrent());
} else {
heap = stats.getHeapSizeImpl();
heap.setBounds(0, runtime.totalMemory());
heap.setCurrent(heap.getUpperBound() - runtime.freeMemory());
}
long now = System.currentTimeMillis();
stats.getUpTimeImpl().setLastSampleTime(now);
heap.setLastSampleTime(now);
return stats;
}
public Properties getSystemProperties() {
return System.getProperties();
}
public String getSystemLog() {
String[] logs = Util.getObjectNames(kernel, baseName, new String[]{NameFactory.SYSTEM_LOG});
if(logs.length != 1) {
log.error("Unable to resolve ObjectName for system log; got "+logs.length+" results!");
return null;
}
return logs[0];
}
public static final GBeanInfo GBEAN_INFO;
static {
GBeanInfoBuilder infoFactory = new GBeanInfoBuilder(JVMImpl.class, NameFactory.JVM);
// infoFactory.addAttribute("objectName", String.class, false);
infoFactory.addAttribute("kernel", Kernel.class, false);
infoFactory.addInterface(JVM.class);
infoFactory.addInterface(StatisticsProvider.class);
infoFactory.setConstructor(new String[] {"objectName", "kernel"});
GBEAN_INFO = infoFactory.getBeanInfo();
}
public static GBeanInfo getGBeanInfo() {
return GBEAN_INFO;
}
}