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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.management.internal.beans;
/**
 * Class to give a consistent sequence number to notifications
 * @author rishim
 *
 */
public class SequenceNumber {
  
  /** Sequence number for resource related notifications **/
  private static volatile long sequenceNumber = 1;
  
  
  public static long next(){
    if(sequenceNumber < Long.MAX_VALUE){
      return ++sequenceNumber;
    }else{
      //reset the sequence number of notification
      sequenceNumber = 1;
      return 1;
    }
  }

}