1 /*
2 * Copyright 2009 Red Hat, Inc.
3 *
4 * Red Hat licenses this file to you under the Apache License, version 2.0
5 * (the "License"); you may not use this file except in compliance with the
6 * 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 import static org.jboss.netty.channel.Channels.*;
19
20 /**
21 * A skeletal {@link ChannelSink} implementation.
22 *
23 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
24 * @author <a href="http://gleamynode.net/">Trustin Lee</a>
25 *
26 * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
27 */
28 public abstract class AbstractChannelSink implements ChannelSink {
29
30 /**
31 * Creates a new instance.
32 */
33 protected AbstractChannelSink() {
34 super();
35 }
36
37 /**
38 * Sends an {@link ExceptionEvent} upstream with the specified
39 * {@code cause}.
40 *
41 * @param event the {@link ChannelEvent} which caused a
42 * {@link ChannelHandler} to raise an exception
43 * @param cause the exception raised by a {@link ChannelHandler}
44 */
45 public void exceptionCaught(ChannelPipeline pipeline,
46 ChannelEvent event, ChannelPipelineException cause) throws Exception {
47 Throwable actualCause = cause.getCause();
48 if (actualCause == null) {
49 actualCause = cause;
50 }
51
52 fireExceptionCaught(event.getChannel(), actualCause);
53 }
54 }