View Javadoc
1   /*
2    * Copyright 2013 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.handler.codec.spdy;
17  
18  import org.jboss.netty.buffer.ChannelBuffer;
19  import org.jboss.netty.buffer.ChannelBuffers;
20  import org.jboss.netty.util.internal.StringUtil;
21  
22  /**
23   * The default {@link SpdyDataFrame} implementation.
24   */
25  public class DefaultSpdyDataFrame extends DefaultSpdyStreamFrame implements SpdyDataFrame {
26  
27      private ChannelBuffer data = ChannelBuffers.EMPTY_BUFFER;
28  
29      /**
30       * Creates a new instance.
31       *
32       * @param streamId the Stream-ID of this frame
33       */
34      public DefaultSpdyDataFrame(int streamId) {
35          super(streamId);
36      }
37  
38      public ChannelBuffer getData() {
39          return data;
40      }
41  
42      public void setData(ChannelBuffer data) {
43          if (data == null) {
44              data = ChannelBuffers.EMPTY_BUFFER;
45          }
46          if (data.readableBytes() > SpdyCodecUtil.SPDY_MAX_LENGTH) {
47              throw new IllegalArgumentException("data payload cannot exceed "
48                      + SpdyCodecUtil.SPDY_MAX_LENGTH + " bytes");
49          }
50          this.data = data;
51      }
52  
53      @Override
54      public String toString() {
55          StringBuilder buf = new StringBuilder();
56          buf.append(getClass().getSimpleName());
57          buf.append("(last: ");
58          buf.append(isLast());
59          buf.append(')');
60          buf.append(StringUtil.NEWLINE);
61          buf.append("--> Stream-ID = ");
62          buf.append(getStreamId());
63          buf.append(StringUtil.NEWLINE);
64          buf.append("--> Size = ");
65          buf.append(getData().readableBytes());
66          return buf.toString();
67      }
68  }