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package org.glassfish.admin.runtime.mgmtinfra;
import org.jvnet.hk2.component.CageBuilder;
import org.jvnet.hk2.component.Inhabitant;
import org.jvnet.hk2.annotations.Service;
import javax.management.*;
import javax.management.modelmbean.*;
import java.lang.management.*;
import java.io.*;
/**
* Entry class for creating and registering runtime mBeans based on POJOs
*
* @author Sreenivas Munnangi
*/
@Service
public class RuntimeMBeanCageBuilder implements CageBuilder {
private static final boolean dbg = false;
public void onEntered(Inhabitant<?> i) {
if (dbg) {
System.out.println("RuntimeMBeanCageBuilder: onEntered(" + i.typeName() +
"): time to create and register the mBean ...");
}
Object o = i.get();
createMBean(o);
}
private void createMBean(Object o) {
if (dbg) {
System.out.println("RuntimeMBeanCageBuilder: createMBean: " +
"creating mbean for Object ..." + o);
}
try {
String className = o.getClass().getName();
String serName = className.substring(className.lastIndexOf(".") + 1);
if (dbg) {
System.out.println("RuntimeMBeanCageBuilder: createMBean: " +
" className = " + className +
" serName = " + serName);
}
InputStream fis = null;
ObjectInputStream inStream = null;
try {
fis = o.getClass().getResourceAsStream(serName+".ser");
inStream = new ObjectInputStream( fis );
} catch (Exception ex) {
if (dbg) {
System.out.println("RuntimeMBeanCageBuilder: createMBean: " +
"companion class " + o + " is not an mBean ...");
}
ex.printStackTrace();
return;
}
ObjectName mbon = new ObjectName(((Runtime)o).getObjectName());
ModelMBeanInfo mmbinfo = ( ModelMBeanInfo )inStream.readObject();
RequiredModelMBean modelmbean = new RequiredModelMBean(mmbinfo);
modelmbean.setManagedResource(o, "objectReference");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
mbs.registerMBean(modelmbean,mbon);
} catch (Exception e) {
if (dbg) {
System.out.println("RuntimeMBeanCageBuilder: createMBean: " +
"exception while creating mBean ...");
}
e.printStackTrace();
}
}
}