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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  import org.jboss.netty.util.internal.StackTraceSimplifier;
21  
22  /**
23   * The default {@link ExceptionEvent} implementation.
24   *
25   * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
26   * @author <a href="http://gleamynode.net/">Trustin Lee</a>
27   *
28   * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
29   *
30   */
31  public class DefaultExceptionEvent implements ExceptionEvent {
32  
33      private final Channel channel;
34      private final Throwable cause;
35  
36      /**
37       * Creates a new instance.
38       */
39      public DefaultExceptionEvent(Channel channel, Throwable cause) {
40          if (channel == null) {
41              throw new NullPointerException("channel");
42          }
43          if (cause == null) {
44              throw new NullPointerException("cause");
45          }
46          this.channel = channel;
47          this.cause = cause;
48          StackTraceSimplifier.simplify(cause);
49      }
50  
51      public Channel getChannel() {
52          return channel;
53      }
54  
55      public ChannelFuture getFuture() {
56          return succeededFuture(getChannel());
57      }
58  
59      public Throwable getCause() {
60          return cause;
61      }
62  
63      @Override
64      public String toString() {
65          return getChannel().toString() + " EXCEPTION: " + cause;
66      }
67  }