1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27 package org.apache.http.impl.nio.client;
28
29 import java.util.concurrent.ExecutionException;
30 import java.util.concurrent.Future;
31 import java.util.concurrent.TimeUnit;
32 import java.util.concurrent.TimeoutException;
33
34 import org.apache.http.concurrent.Cancellable;
35
36 final class FutureWrapper<T> implements Future<T> {
37
38 private final Future<T> future;
39 private final Cancellable cancellable;
40
41 public FutureWrapper(final Future<T> future, final Cancellable cancellable) {
42 super();
43 this.future = future;
44 this.cancellable = cancellable;
45 }
46
47 @Override
48 public boolean cancel(final boolean mayInterruptIfRunning) {
49 try {
50 if (cancellable != null) {
51 cancellable.cancel();
52 }
53 } finally {
54 return future.cancel(mayInterruptIfRunning);
55 }
56 }
57
58 @Override
59 public boolean isCancelled() {
60 return future.isCancelled();
61 }
62
63 @Override
64 public boolean isDone() {
65 return future.isDone();
66 }
67
68 @Override
69 public T get() throws InterruptedException, ExecutionException {
70 return future.get();
71 }
72
73 @Override
74 public T get(final long timeout, final TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
75 return future.get(timeout, unit);
76 }
77
78 @Override
79 public String toString() {
80 return future.toString();
81 }
82
83 }