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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  /**
    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  }