0 Replies Latest reply on Jul 19, 2011 2:22 AM by toemsel

JBoss - JMX

toemsel Jul 19, 2011 2:22 AM

Hello everybody!

When i navigate at my local pc to that adress: "127.0.0.1:8180/jmx-console/" i'm able to see all processes (Are that processes or mbeans?).

For example i can see:

etc,...

Now i want to make my own JMX. I want to display the MBeans from 127.0.0.1:8180/jmx-console in my own java program.

So i worte this code.

----------------------------------------------------------------------------------------------------------------------------------------------------

package at.system;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;

import javax.management.InstanceNotFoundException;
import javax.management.MBeanInfo;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import javax.naming.Context;
import com.liferay.util.bridges.mvc.MVCPortlet;

public class Process extends MVCPortlet
{
public Process()
{
Initialize();
}

private void Initialize()
{
System.out.println("Programm erfolgreich gestartet");
String attribName = "ProcessCpuTime";
String objName = "java.lang:type=OperatingSystem";
String url = "127.0.0.1:1234";

String user = null;
String password = null;

JMXConnector jmxCon = null;
try
{
   jmxCon = ConnectToJMX(url, user, password);
   MBeanServerConnection mBScon = jmxCon.getMBeanServerConnection();
   ShowAllObjects(mBScon);
   createJRockitConsoleMBean(objName, mBScon);
   Set<ObjectName> objectNames = mBScon.queryNames(new ObjectName(objName), null);
   for(ObjectName on : objectNames)
   {
    Object attr = mBScon.getAttribute(on, attribName);
   }
}
catch(Exception ex)
{
   ex.printStackTrace();
   System.out.println("Die Verbindung konnte nicht hergestellt werden. Fehlermeldung: " + ex.getMessage());
}
}

/*
* Diese Methode gibt alle Objekte aus
*/
private void ShowAllObjects(MBeanServerConnection Mbscon) throws Exception
{
Print("----------");
Print("Anzahl der MBeans: " + Mbscon.getMBeanCount());
Iterator<?> itr = Mbscon.queryMBeans(null, null).iterator();
while(itr.hasNext())
   System.out.println(itr.next());
Print("----------");

Print("Beginne mit dem auslesen aller Prozesse mit Methode 2");
TreeMap domainData = new TreeMap();
ObjectName filterName = null;
Set objectNames = Mbscon.queryNames(filterName, null);
Iterator objectNamesIter = objectNames.iterator();
while(objectNamesIter.hasNext())
{
   ObjectName name = (ObjectName)objectNamesIter.next();
   MBeanInfo info = Mbscon.getMBeanInfo(name);
   String domainName = name.getDomain();

   Print(name.toString());
   //Print(info.toString());
   //Print(domainName);
}
}

/*
* Initialisierung des JRockit um die Attribute abfragen zu können
*/
private void createJRockitConsoleMBean(String objectName, MBeanServerConnection mBeanServerConn) throws Exception
{
if(objectName != null || !objectName.startsWith("oracle.jrockit.management"))
   return;
try
{
   mBeanServerConn.getMBeanInfo(new ObjectName("oracle.jrockit.management:type=JRockitConsole"));
} catch(InstanceNotFoundException ex)
{
   mBeanServerConn.createMBean("oracle.jrockit.management.JRockitConsole", null);
}
}

/*
* Diese Methode gibt eine Connection zurück.
*/
private JMXConnector ConnectToJMX(String url, String user, String password) throws Exception
{
String serviceUrl = "service:jmx:rmi:///jndi/rmi://" + url + "/jmxrmi";
if(user == null || password == null || user == "" || password == "")
return JMXConnectorFactory.connect(new JMXServiceURL(serviceUrl));

Map<String, Object> envMap = new HashMap<String, Object>();
envMap.put("jmx.remote.credentials", new String[] { user, password });
envMap.put(Context.SECURITY_PRINCIPAL, user);
envMap.put(Context.SECURITY_CREDENTIALS, password);
return JMXConnectorFactory.connect(new JMXServiceURL(serviceUrl), envMap);
}

private void Print(String message)
{
System.out.println(message);
}
}

----------------------------------------------------------------------------------------------------------------------------------------------------

But the problem is, that i only get a small list of MBeans when i start the program like that:

sun.management.CompilationImpl[java.lang:type=Compilation]

java.util.logging.Logging[java.util.logging:type=Logging]

com.sun.management.UnixOperatingSystem[java.lang:type=OperatingSystem]

sun.management.MemoryPoolImpl[java.lang:type=MemoryPool,name=PS Old Gen]

sun.management.MemoryImpl[java.lang:type=Memory]

javax.management.MBeanServerDelegate[JMImplementation:type=MBeanServerDelegate]

sun.management.MemoryPoolImpl[java.lang:type=MemoryPool,name=PS Perm Gen]

sun.management.RuntimeImpl[java.lang:type=Runtime]

sun.management.GarbageCollectorImpl[java.lang:type=GarbageCollector,name=PS MarkSweep]

sun.management.ThreadImpl[java.lang:type=Threading]

sun.management.GarbageCollectorImpl[java.lang:type=GarbageCollector,name=PS Scavenge]

sun.management.HotSpotDiagnostic[com.sun.management:type=HotSpotDiagnostic]

sun.management.ClassLoadingImpl[java.lang:type=ClassLoading]

sun.management.MemoryPoolImpl[java.lang:type=MemoryPool,name=PS Survivor Space]

sun.management.MemoryManagerImpl[java.lang:type=MemoryManager,name=CodeCacheManager]

sun.management.MemoryPoolImpl[java.lang:type=MemoryPool,name=Code Cache]

sun.management.MemoryPoolImpl[java.lang:type=MemoryPool,name=PS Eden Space]

but that are only 17 beans,.... but at the jmx jboss console i can see over 100,...

Why i only get this small list?
How can i read more information out?

Best regards,

Thomas Christof

Sourcecode.txt.zip 1.6 KB