text: /*
   * Copyright 2012 The Netty Project
   *
   * The Netty Project licenses this file to you under the Apache License,
   * version 2.0 (the "License"); you may not use this file except in compliance
   * with the License. You may obtain a copy of the License at:
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  package org.jboss.netty.channel;
  
  /**
   * A {@link ChannelEvent} which represents the notification of the completion
   * of a write request on a {@link Channel}.  This event is for going upstream
   * only.  Please refer to the {@link ChannelEvent} documentation to find out
   * what an upstream event and a downstream event are and what fundamental
   * differences they have.
   */
  public interface WriteCompletionEvent extends ChannelEvent {
      /**
       * Returns the amount of data written.
       *
       * @return the number of written bytes or messages, depending on the
       *         type of the transport
       */
      long getWrittenAmount();
  }
  