content: package com.alibaba.datax.plugin.reader.util;
  
  import java.util.concurrent.TimeUnit;
  
  //This file is part of OpenTSDB.
  
  //Copyright (C) 2010-2012  The OpenTSDB Authors.
  //Copyright（C）2019 Alibaba Group Holding Ltd.
  
  //
  
  //This program is free software: you can redistribute it and/or modify it
  
  //under the terms of the GNU Lesser General Public License as published by
  
  //the Free Software Foundation, either version 2.1 of the License, or (at your
  
  //option) any later version.  This program is distributed in the hope that it
  
  //will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  
  //of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
  
  //General Public License for more details.  You should have received a copy
  
  //of the GNU Lesser General Public License along with this program.  If not,
  
  //see <http://www.gnu.org/licenses/>.
  public final class TimeUtils {
  
      private TimeUtils() {
      }
  
      private static final long SECOND_MASK = 0xFFFFFFFF00000000L;
      private static final long HOUR_IN_MILL = TimeUnit.HOURS.toMillis(1);
  
      /**
       * Weather the timestamp is second.
       *
       * @param ts timestamp
       */
      public static boolean isSecond(long ts) {
          return (ts & SECOND_MASK) == 0;
      }
  
      /**
       * Get the hour.
       *
       * @param ms time in millisecond
       */
      public static long getTimeInHour(long ms) {
          return ms - ms % HOUR_IN_MILL;
      }
  }
  