/**
*
* 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.airavata.common.logging;

import java.util.Map;
import org.slf4j.MDC;

public class MDCUtil {
    public static Runnable wrapWithMDC(Runnable r) {
        Map<String, String> mdc = MDC.getCopyOfContextMap();
        return () -> {
            Map<String, String> oldMdc = MDC.getCopyOfContextMap();

            if (mdc == null) {
                MDC.clear();
            } else {
                MDC.setContextMap(mdc);
            }
            try {
                r.run();
            } finally {
                if (oldMdc == null) {
                    MDC.clear();
                } else {
                    MDC.setContextMap(oldMdc);
                }
            }
        };
    }
}
