/*
 * JBoss, Home of Professional Open Source
 * Copyright 2010 Red Hat Inc. and/or its affiliates and other contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jboss.arquillian.container.impl;

import java.util.logging.Logger;

/**
 * ThreadContext
 *
 * @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
 * @version $Revision: $
 */
public class ThreadContext {
    private static ThreadLocal<ClassLoader> previousClassloader = new ThreadLocal<ClassLoader>();

    private static Logger log = Logger.getLogger(ThreadContext.class.getName());

    public static void set(ClassLoader classLoader) {
        if (previousClassloader.get() != null) {
            log.warning("Attempting to set a new Thread Context ClassLoader without the old one being reset: "
                + previousClassloader.get());
        }
        previousClassloader.set(Thread.currentThread().getContextClassLoader());
        Thread.currentThread().setContextClassLoader(classLoader);
    }

    public static void reset() {
        if (previousClassloader.get() == null) {
            log.warning("Attempting to reset the Thread Context ClassLoader without one being set");
        } else {
            Thread.currentThread().setContextClassLoader(previousClassloader.get());
            previousClassloader.set(null);
        }
    }
}
