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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.util.internal.StringUtil;
19  
20  /**
21   * The default {@link SpdyWindowUpdateFrame} implementation.
22   */
23  public class DefaultSpdyWindowUpdateFrame implements SpdyWindowUpdateFrame {
24  
25      private int streamId;
26      private int deltaWindowSize;
27  
28      /**
29       * Creates a new instance.
30       *
31       * @param streamId        the Stream-ID of this frame
32       * @param deltaWindowSize the Delta-Window-Size of this frame
33       */
34      public DefaultSpdyWindowUpdateFrame(int streamId, int deltaWindowSize) {
35          setStreamId(streamId);
36          setDeltaWindowSize(deltaWindowSize);
37      }
38  
39      public int getStreamId() {
40          return streamId;
41      }
42  
43      public void setStreamId(int streamId) {
44          if (streamId < 0) {
45              throw new IllegalArgumentException(
46                      "Stream-ID cannot be negative: " + streamId);
47          }
48          this.streamId = streamId;
49      }
50  
51      public int getDeltaWindowSize() {
52          return deltaWindowSize;
53      }
54  
55      public void setDeltaWindowSize(int deltaWindowSize) {
56          if (deltaWindowSize <= 0) {
57              throw new IllegalArgumentException(
58                      "Delta-Window-Size must be positive: " +
59                      deltaWindowSize);
60          }
61          this.deltaWindowSize = deltaWindowSize;
62      }
63  
64      @Override
65      public String toString() {
66          StringBuilder buf = new StringBuilder();
67          buf.append(getClass().getSimpleName());
68          buf.append(StringUtil.NEWLINE);
69          buf.append("--> Stream-ID = ");
70          buf.append(getStreamId());
71          buf.append(StringUtil.NEWLINE);
72          buf.append("--> Delta-Window-Size = ");
73          buf.append(getDeltaWindowSize());
74          return buf.toString();
75      }
76  }