com.sun.enterprise.admin.util.proxy.ProxyClass Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
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, "core.interceptor_preinvoke_fail",
t.getMessage());
_logger.log(Level.FINEST,
"core.interceptor_preinvoke_exception", 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, "core.interceptor_postinvoke_fail",
t.getMessage());
_logger.log(Level.FINEST,
"core.interceptor_postinvoke_exception", 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);
}
}