001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.util;
019
020import org.apache.yetus.audience.InterfaceAudience;
021
022/**
023 * This implementation is not smart and just treats nonce group and nonce as random bits.
024 */
025// TODO: we could use pure byte arrays, but then we wouldn't be able to use hash map.
026@InterfaceAudience.Private
027public class NonceKey {
028  private long group;
029  private long nonce;
030
031  public NonceKey(long group, long nonce) {
032    this.group = group;
033    this.nonce = nonce;
034  }
035
036  @Override
037  public boolean equals(Object obj) {
038    if (obj == null || !(obj instanceof NonceKey)) {
039      return false;
040    }
041    NonceKey nk = ((NonceKey) obj);
042    return this.nonce == nk.nonce && this.group == nk.group;
043  }
044
045  @Override
046  public int hashCode() {
047    return (int) ((group >> 32) ^ group ^ (nonce >> 32) ^ nonce);
048  }
049
050  @Override
051  public String toString() {
052    return "[" + group + ":" + nonce + "]";
053  }
054
055  public long getNonceGroup() {
056    return group;
057  }
058
059  public long getNonce() {
060    return nonce;
061  }
062}