alshabib | ab98466 | 2014-12-04 18:56:18 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 16 | package org.onosproject.cluster; |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 17 | |
| 18 | import java.util.Objects; |
| 19 | |
| 20 | import com.google.common.base.MoreObjects; |
| 21 | |
| 22 | /** |
| 23 | * Abstract leadership concept. |
| 24 | */ |
| 25 | public class Leadership { |
| 26 | |
| 27 | private final String topic; |
Madan Jampani | 8d21c79 | 2014-12-01 16:31:07 -0800 | [diff] [blame] | 28 | private final NodeId leader; |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 29 | private final long epoch; |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 30 | |
Madan Jampani | 8d21c79 | 2014-12-01 16:31:07 -0800 | [diff] [blame] | 31 | public Leadership(String topic, NodeId leader, long epoch) { |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 32 | this.topic = topic; |
| 33 | this.leader = leader; |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 34 | this.epoch = epoch; |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 35 | } |
| 36 | |
| 37 | /** |
| 38 | * The topic for which this leadership applies. |
| 39 | * @return leadership topic. |
| 40 | */ |
| 41 | public String topic() { |
| 42 | return topic; |
| 43 | } |
| 44 | |
| 45 | /** |
Madan Jampani | 8d21c79 | 2014-12-01 16:31:07 -0800 | [diff] [blame] | 46 | * The nodeId of leader for this topic. |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 47 | * @return leader node. |
| 48 | */ |
Madan Jampani | 8d21c79 | 2014-12-01 16:31:07 -0800 | [diff] [blame] | 49 | public NodeId leader() { |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 50 | return leader; |
| 51 | } |
| 52 | |
| 53 | /** |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 54 | * The epoch when the leadership was assumed. |
| 55 | * @return leadership epoch |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 56 | */ |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 57 | public long epoch() { |
| 58 | return epoch; |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public int hashCode() { |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 63 | return Objects.hash(topic, leader, epoch); |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 64 | } |
| 65 | |
| 66 | @Override |
Ray Milkey | 30edb16 | 2014-11-24 15:02:14 -0800 | [diff] [blame] | 67 | public boolean equals(Object obj) { |
| 68 | if (this == obj) { |
| 69 | return true; |
| 70 | } |
| 71 | if (obj instanceof Leadership) { |
| 72 | final Leadership other = (Leadership) obj; |
| 73 | return Objects.equals(this.topic, other.topic) && |
| 74 | Objects.equals(this.leader, other.leader) && |
| 75 | Objects.equals(this.epoch, other.epoch); |
| 76 | } |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | @Override |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 81 | public String toString() { |
| 82 | return MoreObjects.toStringHelper(this.getClass()) |
| 83 | .add("topic", topic) |
| 84 | .add("leader", leader) |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 85 | .add("epoch", epoch) |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 86 | .toString(); |
| 87 | } |
Ray Milkey | 30edb16 | 2014-11-24 15:02:14 -0800 | [diff] [blame] | 88 | } |