/*
 * Copyright IBM Corp. and others 2001
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution and
 * is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following
 * Secondary Licenses when the conditions for such availability set
 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
 * General Public License, version 2 with the GNU Classpath
 * Exception [1] and GNU General Public License, version 2 with the
 * OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] https://openjdk.org/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 */
package org.openj9.test.fastresolve;

import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.testng.log4testng.Logger;


public class CustomClassLoader extends ClassLoader {

	private static Logger logger = Logger.getLogger(CustomClassLoader.class);
	
	public CustomClassLoader() {
		super(CustomClassLoader.class.getClassLoader());
	}

	@SuppressWarnings({ "rawtypes", "unchecked" })
	public Class loadClass(String className) throws ClassNotFoundException {
		if (className.contains("org.openj9.test.fastresolve")) {			  	
			
			String classFile = className.replace('.', '/')+ ".class";
			try {
				InputStream classStream = getClass().getClassLoader().getResourceAsStream(classFile);
				if ( classStream == null ){
					logger.debug("Error loading class : " + classFile);
					throw new ClassNotFoundException();
				}
		        int size = classStream.available();
		        byte classRep[] = new byte[size];
		        DataInputStream in = new DataInputStream(classStream);
		        in.readFully(classRep);
		        in.close();
		        Class<?> clazz = defineClass(className, classRep, 0, classRep.length);
				resolveClass(clazz);
				return clazz;
			} catch (IOException e) {
				e.printStackTrace();
				throw new ClassNotFoundException();
			} 
						
		} else {
			return super.loadClass(className);
		}
	}
}
