/*
 * #%L
 * %%
 * Copyright (C) 2011 - 2017 BMW Car IT GmbH
 * %%
 * 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.
 * #L%
 */
package io.joynr.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import io.joynr.JoynrVersion;
import joynr.types.Version;

/**
 * Utility for extrapolating version information from various classes and annotations.
 */
public class VersionUtil {

    private static final Logger logger = LoggerFactory.getLogger(VersionUtil.class);

    public static Version getVersionFromAnnotation(Class<?> annotatedClass) {
        JoynrVersion versionAnnotation = AnnotationUtil.getAnnotation(annotatedClass, JoynrVersion.class);
        if (versionAnnotation == null) {
            throw new IllegalStateException("No @JoynrVersion found on " + annotatedClass);
        }
        Version version = new Version(versionAnnotation.major(), versionAnnotation.minor());
        logger.trace("Created version {} for interface class {}", version, annotatedClass);
        return version;
    }

}
