1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.channel;
17
18 /**
19 * The {@link CompleteChannelFuture} which is failed already. It is
20 * recommended to use {@link Channels#failedFuture(Channel, Throwable)}
21 * instead of calling the constructor of this future.
22 */
23 public class FailedChannelFuture extends CompleteChannelFuture {
24
25 private final Throwable cause;
26
27 /**
28 * Creates a new instance.
29 *
30 * @param channel the {@link Channel} associated with this future
31 * @param cause the cause of failure
32 */
33 public FailedChannelFuture(Channel channel, Throwable cause) {
34 super(channel);
35 if (cause == null) {
36 throw new NullPointerException("cause");
37 }
38 this.cause = cause;
39 }
40
41 public Throwable getCause() {
42 return cause;
43 }
44
45 public boolean isSuccess() {
46 return false;
47 }
48
49 public ChannelFuture sync() throws InterruptedException {
50 rethrow();
51 return this;
52 }
53
54 public ChannelFuture syncUninterruptibly() {
55 rethrow();
56 return this;
57 }
58
59 private void rethrow() {
60 if (cause instanceof RuntimeException) {
61 throw (RuntimeException) cause;
62 }
63
64 if (cause instanceof Error) {
65 throw (Error) cause;
66 }
67
68 throw new ChannelException(cause);
69 }
70 }