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   /*
    * Copyright 2015 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:
    *
    * https://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 io.netty.handler.codec.http2;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.channel.ChannelFuture;
  import io.netty.channel.ChannelHandlerContext;
  import io.netty.channel.ChannelPromise;
  import io.netty.util.internal.UnstableApi;
  
  import static io.netty.util.internal.ObjectUtil.checkNotNull;
  
  /**
   * Decorator around another {@link Http2FrameWriter} instance.
   */
  @UnstableApi
  public class DecoratingHttp2FrameWriter implements Http2FrameWriter {
      private final Http2FrameWriter delegate;
  
      public DecoratingHttp2FrameWriter(Http2FrameWriter delegate) {
          this.delegate = checkNotNull(delegate, "delegate");
      }
  
      @Override
      public ChannelFuture writeData(ChannelHandlerContext ctx, int streamId, ByteBuf data, int padding,
                                     boolean endStream, ChannelPromise promise) {
          return delegate.writeData(ctx, streamId, data, padding, endStream, promise);
      }
  
      @Override
      public ChannelFuture writeHeaders(ChannelHandlerContext ctx, int streamId, Http2Headers headers, int padding,
                                        boolean endStream, ChannelPromise promise) {
          return delegate.writeHeaders(ctx, streamId, headers, padding, endStream, promise);
      }
  
      @Override
      public ChannelFuture writeHeaders(ChannelHandlerContext ctx, int streamId, Http2Headers headers,
                                        int streamDependency, short weight, boolean exclusive, int padding,
                                        boolean endStream, ChannelPromise promise) {
          return delegate
                  .writeHeaders(ctx, streamId, headers, streamDependency, weight, exclusive, padding, endStream, promise);
      }
  
      @Override
      public ChannelFuture writePriority(ChannelHandlerContext ctx, int streamId, int streamDependency, short weight,
                                         boolean exclusive, ChannelPromise promise) {
          return delegate.writePriority(ctx, streamId, streamDependency, weight, exclusive, promise);
      }
  
      @Override
      public ChannelFuture writeRstStream(ChannelHandlerContext ctx, int streamId, long errorCode,
                                          ChannelPromise promise) {
          return delegate.writeRstStream(ctx, streamId, errorCode, promise);
      }
  
      @Override
      public ChannelFuture writeSettings(ChannelHandlerContext ctx, Http2Settings settings, ChannelPromise promise) {
          return delegate.writeSettings(ctx, settings, promise);
      }
  
      @Override
      public ChannelFuture writeSettingsAck(ChannelHandlerContext ctx, ChannelPromise promise) {
          return delegate.writeSettingsAck(ctx, promise);
      }
  
      @Override
      public ChannelFuture writePing(ChannelHandlerContext ctx, boolean ack, long data, ChannelPromise promise) {
          return delegate.writePing(ctx, ack, data, promise);
      }
  
      @Override
      public ChannelFuture writePushPromise(ChannelHandlerContext ctx, int streamId, int promisedStreamId,
                                            Http2Headers headers, int padding, ChannelPromise promise) {
          return delegate.writePushPromise(ctx, streamId, promisedStreamId, headers, padding, promise);
      }
  
      @Override
      public ChannelFuture writeGoAway(ChannelHandlerContext ctx, int lastStreamId, long errorCode, ByteBuf debugData,
                                       ChannelPromise promise) {
          return delegate.writeGoAway(ctx, lastStreamId, errorCode, debugData, promise);
      }
  
      @Override
      public ChannelFuture writeWindowUpdate(ChannelHandlerContext ctx, int streamId, int windowSizeIncrement,
                                             ChannelPromise promise) {
          return delegate.writeWindowUpdate(ctx, streamId, windowSizeIncrement, promise);
      }
 
     @Override
     public ChannelFuture writeFrame(ChannelHandlerContext ctx, byte frameType, int streamId, Http2Flags flags,
                                     ByteBuf payload, ChannelPromise promise) {
         return delegate.writeFrame(ctx, frameType, streamId, flags, payload, promise);
     }
 
     @Override
     public Configuration configuration() {
         return delegate.configuration();
     }
 
     @Override
     public void close() {
         delegate.close();
     }
 }