Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 1 | package org.onlab.onos.cluster; |
| 2 | |
| 3 | import java.util.Objects; |
| 4 | |
| 5 | import com.google.common.base.MoreObjects; |
| 6 | |
| 7 | /** |
| 8 | * Abstract leadership concept. |
| 9 | */ |
| 10 | public class Leadership { |
| 11 | |
| 12 | private final String topic; |
| 13 | private final ControllerNode leader; |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 14 | private final long epoch; |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 15 | |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 16 | public Leadership(String topic, ControllerNode leader, long epoch) { |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 17 | this.topic = topic; |
| 18 | this.leader = leader; |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 19 | this.epoch = epoch; |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 20 | } |
| 21 | |
| 22 | /** |
| 23 | * The topic for which this leadership applies. |
| 24 | * @return leadership topic. |
| 25 | */ |
| 26 | public String topic() { |
| 27 | return topic; |
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * The leader for this topic. |
| 32 | * @return leader node. |
| 33 | */ |
| 34 | public ControllerNode leader() { |
| 35 | return leader; |
| 36 | } |
| 37 | |
| 38 | /** |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 39 | * The epoch when the leadership was assumed. |
| 40 | * @return leadership epoch |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 41 | */ |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 42 | public long epoch() { |
| 43 | return epoch; |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 44 | } |
| 45 | |
| 46 | @Override |
| 47 | public int hashCode() { |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 48 | return Objects.hash(topic, leader, epoch); |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | @Override |
Ray Milkey | 30edb16 | 2014-11-24 15:02:14 -0800 | [diff] [blame] | 52 | public boolean equals(Object obj) { |
| 53 | if (this == obj) { |
| 54 | return true; |
| 55 | } |
| 56 | if (obj instanceof Leadership) { |
| 57 | final Leadership other = (Leadership) obj; |
| 58 | return Objects.equals(this.topic, other.topic) && |
| 59 | Objects.equals(this.leader, other.leader) && |
| 60 | Objects.equals(this.epoch, other.epoch); |
| 61 | } |
| 62 | return false; |
| 63 | } |
| 64 | |
| 65 | @Override |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 66 | public String toString() { |
| 67 | return MoreObjects.toStringHelper(this.getClass()) |
| 68 | .add("topic", topic) |
| 69 | .add("leader", leader) |
Madan Jampani | 1ee9178 | 2014-11-20 20:24:24 -0800 | [diff] [blame] | 70 | .add("epoch", epoch) |
Madan Jampani | 1d3494e | 2014-11-20 11:24:22 -0800 | [diff] [blame] | 71 | .toString(); |
| 72 | } |
Ray Milkey | 30edb16 | 2014-11-24 15:02:14 -0800 | [diff] [blame] | 73 | } |