| /* |
| * Copyright 2014-2015 Open Networking Laboratory |
| * |
| * 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. |
| */ |
| package org.onosproject.cluster; |
| |
| import java.util.Objects; |
| |
| import org.onosproject.event.AbstractEvent; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Describes leadership-related event. |
| */ |
| public class LeadershipEvent extends AbstractEvent<LeadershipEvent.Type, Leadership> { |
| |
| /** |
| * Type of leadership-related events. |
| */ |
| public enum Type { |
| /** |
| * Signifies that the leader has been elected. |
| * The event subject is the new leader. |
| * This event does not guarantee accurate candidate information. |
| */ |
| LEADER_ELECTED, |
| |
| /** |
| * Signifies that the leader has been re-elected. |
| * The event subject is the leader. |
| * This event does not guarantee accurate candidate information. |
| */ |
| LEADER_REELECTED, |
| |
| /** |
| * Signifies that the leader has been booted and lost leadership. |
| * The event subject is the former leader. |
| * This event does not guarantee accurate candidate information. |
| */ |
| LEADER_BOOTED, |
| |
| /** |
| * Signifies that the list of candidates for leadership for a topic has |
| * changed. This event does not guarantee accurate leader information. |
| */ |
| CANDIDATES_CHANGED |
| } |
| |
| /** |
| * Creates an event of a given type and for the specified instance and the |
| * current time. |
| * |
| * @param type leadership event type |
| * @param leadership event subject |
| */ |
| public LeadershipEvent(Type type, Leadership leadership) { |
| super(type, leadership); |
| } |
| |
| /** |
| * Creates an event of a given type and for the specified subject and time. |
| * |
| * @param type leadership event type |
| * @param leadership event subject |
| * @param time occurrence time |
| */ |
| public LeadershipEvent(Type type, Leadership leadership, long time) { |
| super(type, leadership, time); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(type(), subject(), time()); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof LeadershipEvent) { |
| final LeadershipEvent other = (LeadershipEvent) obj; |
| return Objects.equals(this.type(), other.type()) && |
| Objects.equals(this.subject(), other.subject()) && |
| Objects.equals(this.time(), other.time()); |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(this.getClass()) |
| .add("type", type()) |
| .add("subject", subject()) |
| .add("time", time()) |
| .toString(); |
| } |
| } |