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    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  import java.net.SocketAddress;
    19
    20  import org.jboss.netty.util.internal.StringUtil;
    21
    22  /**
    23   * The default downstream {@link MessageEvent} implementation.
    24   */
    25  public class DownstreamMessageEvent implements MessageEvent {
    26
    27      private final Channel channel;
    28      private final ChannelFuture future;
    29      private final Object message;
    30      private final SocketAddress remoteAddress;
    31
    32      /**
    33       * Creates a new instance.
    34       */
    35      public DownstreamMessageEvent(
    36              Channel channel, ChannelFuture future,
    37              Object message, SocketAddress remoteAddress) {
    38
    39          if (channel == null) {
    40              throw new NullPointerException("channel");
    41          }
    42          if (future == null) {
    43              throw new NullPointerException("future");
    44          }
    45          if (message == null) {
    46              throw new NullPointerException("message");
    47          }
    48          this.channel = channel;
    49          this.future = future;
    50          this.message = message;
    51          if (remoteAddress != null) {
    52              this.remoteAddress = remoteAddress;
    53          } else {
    54              this.remoteAddress = channel.getRemoteAddress();
    55          }
    56      }
    57
    58      public Channel getChannel() {
    59          return channel;
    60      }
    61
    62      public ChannelFuture getFuture() {
    63          return future;
    64      }
    65
    66      public Object getMessage() {
    67          return message;
    68      }
    69
    70      public SocketAddress getRemoteAddress() {
    71          return remoteAddress;
    72      }
    73
    74      @Override
    75      public String toString() {
    76          if (getRemoteAddress() == getChannel().getRemoteAddress()) {
    77              return getChannel().toString() + " WRITE: " +
    78                     StringUtil.stripControlCharacters(getMessage());
    79          } else {
    80              return getChannel().toString() + " WRITE: " +
    81                     StringUtil.stripControlCharacters(getMessage()) + " to " +
    82                     getRemoteAddress();
    83          }
    84      }
    85  }