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/*
* Copyright 2014 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.mastership;
import org.joda.time.LocalDateTime;
import org.onosproject.cluster.RoleInfo;
import org.onosproject.event.AbstractEvent;
import org.onosproject.net.DeviceId;
import com.google.common.base.MoreObjects;
/**
* Describes a device mastership event.
*/
public class MastershipEvent extends AbstractEvent<MastershipEvent.Type, DeviceId> {
//Contains master and standby information.
RoleInfo roleInfo;
/**
* Type of mastership events.
*/
public enum Type {
/**
* Signifies that the master for a device has changed.
*/
MASTER_CHANGED,
/**
* Signifies that the list of backup nodes has changed. If
* the change in the backups list is accompanied by a change in
* master, the event is subsumed by MASTER_CHANGED.
*/
BACKUPS_CHANGED
}
/**
* Creates an event of a given type and for the specified device,
* role information, and the current time.
*
* @param type mastership event type
* @param device event device subject
* @param info mastership role information
*/
public MastershipEvent(Type type, DeviceId device, RoleInfo info) {
super(type, device);
this.roleInfo = info;
}
/**
* Creates an event of a given type and for the specified device, master,
* and time.
*
* @param type mastership event type
* @param device event device subject
* @param info role information
* @param time occurrence time
*/
public MastershipEvent(Type type, DeviceId device, RoleInfo info, long time) {
super(type, device, time);
this.roleInfo = info;
}
/**
* Returns the current role state for the subject.
*
* @return RoleInfo associated with Device ID subject
*/
public RoleInfo roleInfo() {
return roleInfo;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("time", new LocalDateTime(time()))
.add("type", type())
.add("subject", subject())
.add("roleInfo", roleInfo)
.toString();
}
}
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