| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.zookeeper; |
| |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.apache.zookeeper.Watcher.Event.EventType; |
| import org.apache.zookeeper.Watcher.Event.KeeperState; |
| import org.apache.zookeeper.proto.WatcherEvent; |
| |
| /** |
| * A WatchedEvent represents a change on the ZooKeeper that a Watcher |
| * is able to respond to. The WatchedEvent includes exactly what happened, |
| * the current state of the ZooKeeper, and the path of the znode that |
| * was involved in the event. |
| */ |
| @InterfaceAudience.Public |
| public class WatchedEvent { |
| |
| private final KeeperState keeperState; |
| private final EventType eventType; |
| private String path; |
| |
| /** |
| * Create a WatchedEvent with specified type, state and path |
| */ |
| public WatchedEvent(EventType eventType, KeeperState keeperState, String path) { |
| this.keeperState = keeperState; |
| this.eventType = eventType; |
| this.path = path; |
| } |
| |
| /** |
| * Convert a WatcherEvent sent over the wire into a full-fledged WatcherEvent |
| */ |
| public WatchedEvent(WatcherEvent eventMessage) { |
| keeperState = KeeperState.fromInt(eventMessage.getState()); |
| eventType = EventType.fromInt(eventMessage.getType()); |
| path = eventMessage.getPath(); |
| } |
| |
| public KeeperState getState() { |
| return keeperState; |
| } |
| |
| public EventType getType() { |
| return eventType; |
| } |
| |
| public String getPath() { |
| return path; |
| } |
| |
| @Override |
| public String toString() { |
| return "WatchedEvent state:" + keeperState + " type:" + eventType + " path:" + path; |
| } |
| |
| /** |
| * Convert WatchedEvent to type that can be sent over network |
| */ |
| public WatcherEvent getWrapper() { |
| return new WatcherEvent(eventType.getIntValue(), keeperState.getIntValue(), path); |
| } |
| |
| } |