Utils.java

/*
 * Copyright 2013-2014 eXascale Infolab, University of Fribourg. All rights reserved.
 */
package org.apache.hadoop.hadaps;

import javax.xml.bind.annotation.adapters.HexBinaryAdapter;
import java.util.concurrent.TimeUnit;

class Utils {

  private Utils() {
  }

  static String getPrettyTime(long duration) {
    if (duration <= 0) throw new IllegalArgumentException();

    return String.format(
        "%02d:%02d:%02d.%03d",
        TimeUnit.MILLISECONDS.toHours(duration),
        TimeUnit.MILLISECONDS.toMinutes(duration)
            - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(duration)),
        TimeUnit.MILLISECONDS.toSeconds(duration)
            - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(duration)),
        duration - TimeUnit.SECONDS.toMillis(TimeUnit.MILLISECONDS.toSeconds(duration))
    );
  }

  static String getHexString(byte[] bytes) {
    if (bytes == null) throw new IllegalArgumentException();

    return new HexBinaryAdapter().marshal(bytes);
  }

}