| /* |
| * 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.curator.x.async; |
| |
| import java.util.concurrent.CompletionStage; |
| import org.apache.zookeeper.WatchedEvent; |
| import org.apache.zookeeper.Watcher; |
| |
| /** |
| * The exception type set for async watchers |
| */ |
| public abstract class AsyncEventException extends Exception { |
| /** |
| * Returns the error condition that temporarily triggered the watcher. NOTE: the watcher |
| * will most likely still be set. Use {@link #reset()} to stage on the successful trigger |
| * |
| * @return state |
| */ |
| public abstract Watcher.Event.KeeperState getKeeperState(); |
| |
| /** |
| * ZooKeeper temporarily triggers watchers when there is a connection event. However, the watcher |
| * stays set for the original operation. Use this method to reset with a new completion stage |
| * that will allow waiting for a successful trigger. |
| * |
| * @return new stage |
| */ |
| public abstract CompletionStage<WatchedEvent> reset(); |
| } |