/**
* Create MBean for Object. Attempts to create an MBean for the object by searching the package
* and class name space. For example an object of the type
*
* <PRE>
* class com.acme.MyClass extends com.acme.util.BaseClass
* </PRE>
*
* Then this method would look for the following classes:
*
* <UL>
* <LI>com.acme.MyClassMBean
* <LI>com.acme.jmx.MyClassMBean
* <LI>com.acme.util.BaseClassMBean
* <LI>com.acme.util.jmx.BaseClassMBean
* </UL>
*
* @param o The object
* @return A new instance of an MBean for the object or null.
*/
public static ModelMBean mbeanFor(Object o) {
try {
Class oClass = o.getClass();
ClassLoader loader = oClass.getClassLoader();
ModelMBean mbean = null;
boolean jmx = false;
Class[] interfaces = null;
int i = 0;
while (mbean == null && oClass != null) {
Class focus = interfaces == null ? oClass : interfaces[i];
String pName = focus.getPackage().getName();
String cName = focus.getName().substring(pName.length() + 1);
String mName = pName + (jmx ? ".jmx." : ".") + cName + "MBean";
try {
Class mClass = loader.loadClass(mName);
if (log.isTraceEnabled()) log.trace("mbeanFor " + o + " mClass=" + mClass);
mbean = (ModelMBean) mClass.newInstance();
mbean.setManagedResource(o, "objectReference");
if (log.isDebugEnabled()) log.debug("mbeanFor " + o + " is " + mbean);
return mbean;
} catch (ClassNotFoundException e) {
if (e.toString().endsWith("MBean")) {
if (log.isTraceEnabled()) log.trace(e.toString());
} else log.warn(LogSupport.EXCEPTION, e);
} catch (Error e) {
log.warn(LogSupport.EXCEPTION, e);
mbean = null;
} catch (Exception e) {
log.warn(LogSupport.EXCEPTION, e);
mbean = null;
}
if (jmx) {
if (interfaces != null) {
i++;
if (i >= interfaces.length) {
interfaces = null;
oClass = oClass.getSuperclass();
}
} else {
interfaces = oClass.getInterfaces();
i = 0;
if (interfaces == null || interfaces.length == 0) {
interfaces = null;
oClass = oClass.getSuperclass();
}
}
}
jmx = !jmx;
}
} catch (Exception e) {
LogSupport.ignore(log, e);
}
return null;
}
public static void main(String[] args) throws Exception {
Class thisClass = MethodResultTest.class;
Class exoticClass = Exotic.class;
String exoticClassName = Exotic.class.getName();
ClassLoader testClassLoader = thisClass.getClassLoader();
if (!(testClassLoader instanceof URLClassLoader)) {
System.out.println("TEST INVALID: Not loaded by a " + "URLClassLoader: " + testClassLoader);
System.exit(1);
}
URLClassLoader tcl = (URLClassLoader) testClassLoader;
URL[] urls = tcl.getURLs();
ClassLoader shadowLoader =
new ShadowLoader(
urls,
testClassLoader,
new String[] {
exoticClassName, ExoticMBeanInfo.class.getName(), ExoticException.class.getName()
});
Class cl = shadowLoader.loadClass(exoticClassName);
if (cl == exoticClass) {
System.out.println(
"TEST INVALID: Shadow class loader loaded " + "same class as test class loader");
System.exit(1);
}
Thread.currentThread().setContextClassLoader(shadowLoader);
ObjectName on = new ObjectName("a:b=c");
MBeanServer mbs = MBeanServerFactory.newMBeanServer();
mbs.createMBean(Thing.class.getName(), on);
final String[] protos = {"rmi", "iiop", "jmxmp"};
boolean ok = true;
for (int i = 0; i < protos.length; i++) {
try {
ok &= test(protos[i], mbs, on);
System.out.println();
} catch (Exception e) {
System.out.println("TEST FAILED WITH EXCEPTION:");
e.printStackTrace(System.out);
ok = false;
}
}
if (ok) System.out.println("Test passed");
else {
System.out.println("TEST FAILED");
System.exit(1);
}
}