| /** |
| * 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 com.twitter.distributedlog.io; |
| |
| import com.twitter.util.Function; |
| import com.twitter.util.Future; |
| |
| /** |
| * An {@code Abortable} is a source or destination of data that can be aborted. |
| * The abort method is invoked to release resources that the object is holding |
| * (such as open files). The abort happens when the object is in an error state, |
| * which it couldn't be closed gracefully. |
| * |
| * @see AsyncCloseable |
| * @see Abortable |
| * @since 0.3.43 |
| */ |
| public interface AsyncAbortable { |
| |
| Function<AsyncAbortable, Future<Void>> ABORT_FUNC = new Function<AsyncAbortable, Future<Void>>() { |
| @Override |
| public Future<Void> apply(AsyncAbortable abortable) { |
| return abortable.asyncAbort(); |
| } |
| }; |
| |
| AsyncAbortable NULL = new AsyncAbortable() { |
| @Override |
| public Future<Void> asyncAbort() { |
| return Future.Void(); |
| } |
| }; |
| |
| /** |
| * Aborts the object and releases any resources associated with it. |
| * If the object is already aborted then invoking this method has no |
| * effect. |
| * |
| * @return future represents the abort result |
| */ |
| Future<Void> asyncAbort(); |
| } |