fish.payara.nucleus.microprofile.config.source.extension.ConfigSourceExtensions Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project
There is a newer version: 7.2024.1.Alpha1
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) [2020] Payara Foundation 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://github.com/payara/Payara/blob/master/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 glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * The Payara Foundation designates this particular file as subject to the "Classpath"
 * exception as provided by the Payara Foundation 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 fish.payara.nucleus.microprofile.config.source.extension;

import java.lang.reflect.ParameterizedType;

import org.glassfish.hk2.api.ServiceHandle;

import fish.payara.nucleus.microprofile.config.spi.ConfigSourceConfiguration;

/**
 * A utility class for handling config source extensions
 */
public class ConfigSourceExtensions {

    private ConfigSourceExtensions() {}

    public static final String getName(ServiceHandle handle) {
        final String configSourceName = handle.getService().getName();
        if (configSourceName != null && !configSourceName.isEmpty()) {
            return configSourceName;
        }
        final String serviceName = handle.getActiveDescriptor().getName();
        if (serviceName != null && !serviceName.isEmpty()) {
            return serviceName;
        }
        final String className = handle.getActiveDescriptor().getImplementationClass().getSimpleName();
        if (className != null && !className.isEmpty()) {
            return className;
        }
        return "null";
    }

    /**
     * @param                a generic class of the config source configuration
     *                          class
     * @param configSourceClass the config of the config source
     * @return the class used to configure the configured config source
     */
    @SuppressWarnings("unchecked")
    public static  Class getConfigurationClass(Class configSourceClass) {
        final ParameterizedType genericSuperclass = (ParameterizedType) configSourceClass.getGenericSuperclass();
        if (genericSuperclass == null) {
            return null;
        }
        return (Class) genericSuperclass.getActualTypeArguments()[0];
    }

}