| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * 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.net.intf; |
| |
| import org.onlab.util.Tools; |
| import org.onosproject.event.AbstractEvent; |
| |
| import static com.google.common.base.MoreObjects.toStringHelper; |
| |
| /** |
| * Describes an interface event. |
| */ |
| public class InterfaceEvent extends AbstractEvent<InterfaceEvent.Type, Interface> { |
| |
| private final Interface prevSubject; |
| |
| public enum Type { |
| /** |
| * Indicates a new interface has been added. |
| */ |
| INTERFACE_ADDED, |
| |
| /** |
| * Indicates an interface has been updated. |
| */ |
| INTERFACE_UPDATED, |
| |
| /** |
| * Indicates an interface has been removed. |
| */ |
| INTERFACE_REMOVED |
| } |
| |
| /** |
| * Creates an interface event with type and subject. |
| * |
| * @param type event type |
| * @param subject subject interface |
| */ |
| public InterfaceEvent(Type type, Interface subject) { |
| this(type, subject, null); |
| } |
| |
| /** |
| * Creates an interface event with type, subject and time of event. |
| * |
| * @param type event type |
| * @param subject subject interface |
| * @param time time of event |
| */ |
| public InterfaceEvent(Type type, Interface subject, long time) { |
| this(type, subject, null, time); |
| } |
| |
| /** |
| * Creates an interface event with type, subject and previous subject. |
| * |
| * @param type event type |
| * @param subject subject interface |
| * @param prevSubject previous interface subject |
| */ |
| public InterfaceEvent(Type type, Interface subject, Interface prevSubject) { |
| super(type, subject); |
| this.prevSubject = prevSubject; |
| } |
| |
| /** |
| * Creates an interface event with type, subject, previous subject and time. |
| * |
| * @param type event type |
| * @param subject subject interface |
| * @param prevSubject previous interface subject |
| * @param time time of event |
| */ |
| public InterfaceEvent(Type type, Interface subject, Interface prevSubject, long time) { |
| super(type, subject, time); |
| this.prevSubject = prevSubject; |
| } |
| |
| /** |
| * Returns the previous interface subject. |
| * |
| * @return previous subject of interface or null if the event is not interface specific. |
| */ |
| public Interface prevSubject() { |
| return prevSubject; |
| } |
| |
| @Override |
| public String toString() { |
| if (prevSubject == null) { |
| return super.toString(); |
| } |
| return toStringHelper(this) |
| .add("time", Tools.defaultOffsetDataTime(time())) |
| .add("type", type()) |
| .add("subject", subject()) |
| .add("prevSubject", prevSubject) |
| .toString(); |
| } |
| } |