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A reactive Java web server.

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/*
 * Copyright (c) 1998-2015 Caucho Technology -- all rights reserved
 *
 * This file is part of Baratine(TM)(TM)
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Baratine is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Baratine 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Baratine; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.v5.util;

import java.time.Clock;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.util.Objects;

/**
 * The CurrentTime class returns the current system time.
 */
public class ClockCurrent extends Clock
{
  public static final Clock LOCAL = new ClockCurrent(ZoneId.systemDefault());
  public static final Clock GMT = new ClockCurrent(ZoneOffset.UTC);
  
  private final ZoneId _zone;
  
  ClockCurrent(ZoneId zone)
  {
    Objects.requireNonNull(zone);
    
    _zone = zone;
  }
  @Override
  public long millis()
  {
    return CurrentTime.currentTime();
  }
  
  @Override
  public ZoneId getZone()
  {
    return _zone;
  }

  @Override
  public Clock withZone(ZoneId zone)
  {
    return new ClockCurrent(zone);
  }

  @Override
  public Instant instant()
  {
    return Instant.ofEpochMilli(CurrentTime.currentTime());
  }
}