com.sun.enterprise.admin.util.proxy.ProxyClass Maven / Gradle / Ivy
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package com.sun.enterprise.admin.util.proxy;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationHandler;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A proxy class
*/
public class ProxyClass implements InvocationHandler {
private static InheritableThreadLocal
callStackHolder = new InheritableThreadLocal() {
protected synchronized Object initialValue() {
return new CallStack();
}
};
private static Logger _logger = getLogger();
private Object delegate;
private Interceptor interceptor;
/** Creates a new instance of Proxy */
public ProxyClass(Object handler, Interceptor interceptor) {
delegate = handler;
this.interceptor = interceptor;
}
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
Call call = new Call(method, args);
CallStack callStack = (CallStack)callStackHolder.get();
callStack.beginCall(call);
try {
interceptor.preInvoke(callStack);
} catch (Throwable t) {
_logger.log(Level.FINE, "Preinvoke failed for MBeanServer interceptor [{0}].",
t.getMessage());
_logger.log(Level.FINEST,
"Preinvoke exception for MBeanServer interceptor.", t);
}
Object result = null;
boolean success = true;
Throwable failReason = null;
try {
result = method.invoke(delegate, args);
} catch (InvocationTargetException ite) {
success = false;
failReason = ite.getTargetException();
throw failReason;
} catch (Throwable t) {
success = false;
failReason = t;
throw failReason;
} finally {
if (!success) {
call.setState(CallState.FAILED);
call.setFailureReason(failReason);
}
call.setResult(result);
if(!(call.getState().isFailed()))
call.setState(CallState.SUCCESS);
try {
interceptor.postInvoke(callStack);
} catch (Throwable t) {
_logger.log(Level.FINE, "Postinvoke failed for MBeanServer interceptor [{0}].",
t.getMessage());
_logger.log(Level.FINEST,
"Postinvoke exception for MBeanServer interceptor.", t);
}
callStack.endCall();
}
return result;
}
private static Logger getLogger() {
String loggerName = System.getProperty("com.sun.aas.admin.logger.name");
if (loggerName == null) {
loggerName = "global";
}
return Logger.getLogger(loggerName);
}
}