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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 java.net.SocketAddress;
    19
    20  import org.jboss.netty.util.internal.StringUtil;
    21
    22  /**
    23   * The default downstream {@link MessageEvent} 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 DownstreamMessageEvent implements MessageEvent {
    32
    33      private final Channel channel;
    34      private final ChannelFuture future;
    35      private final Object message;
    36      private final SocketAddress remoteAddress;
    37
    38      /**
    39       * Creates a new instance.
    40       */
    41      public DownstreamMessageEvent(
    42              Channel channel, ChannelFuture future,
    43              Object message, SocketAddress remoteAddress) {
    44
    45          if (channel == null) {
    46              throw new NullPointerException("channel");
    47          }
    48          if (future == null) {
    49              throw new NullPointerException("future");
    50          }
    51          if (message == null) {
    52              throw new NullPointerException("message");
    53          }
    54          this.channel = channel;
    55          this.future = future;
    56          this.message = message;
    57          if (remoteAddress != null) {
    58              this.remoteAddress = remoteAddress;
    59          } else {
    60              this.remoteAddress = channel.getRemoteAddress();
    61          }
    62      }
    63
    64      public Channel getChannel() {
    65          return channel;
    66      }
    67
    68      public ChannelFuture getFuture() {
    69          return future;
    70      }
    71
    72      public Object getMessage() {
    73          return message;
    74      }
    75
    76      public SocketAddress getRemoteAddress() {
    77          return remoteAddress;
    78      }
    79
    80      @Override
    81      public String toString() {
    82          if (getRemoteAddress() == getChannel().getRemoteAddress()) {
    83              return getChannel().toString() + " WRITE: " +
    84                     StringUtil.stripControlCharacters(getMessage());
    85          } else {
    86              return getChannel().toString() + " WRITE: " +
    87                     StringUtil.stripControlCharacters(getMessage()) + " to " +
    88                     getRemoteAddress();
    89          }
    90      }
    91  }