/*

 * Copyright 2014 Goldman Sachs.

 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.lang.instrument.ClassFileTransformer;

import java.lang.instrument.IllegalClassFormatException;

import java.lang.instrument.Instrumentation;

import java.security.ProtectionDomain;

public class DummyAgent implements ClassFileTransformer {

    @Override

    public byte[] transform(ClassLoader loader, String className,

                            Class<?> classBeingRedefined, ProtectionDomain protectionDomain,

                            byte[] classfileBuffer) throws IllegalClassFormatException {

        /* The Daemon Thread bug is timing dependent and you want the transform method

         * to return ASAP - so just return the buffer will be fine

         */

        return classfileBuffer;

    }

    public static void premain(String agentArgs, Instrumentation inst) {

        inst.addTransformer(new DummyAgent(), false);

    }

}