/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.pulsar.functions.utils.functioncache;

import java.net.URL;
import java.net.URLClassLoader;

/**
 * Class loaders for loading function code.
 */
public class FunctionClassLoaders {

    /**
     * Class loader that loads from the parent first and only after that from urls.
     */
    static class ParentFirstClassLoader extends URLClassLoader {

        public ParentFirstClassLoader(URL[] urls, ClassLoader parent) {
            super(urls, parent);
        }

        public ParentFirstClassLoader(URL[] urls) {
            this(urls, FunctionClassLoaders.class.getClassLoader());
        }
    }

    public static URLClassLoader create(URL[] urls,
                                        ClassLoader parent) {
        return new ParentFirstClassLoader(urls, parent);
    }

}
