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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    *   https://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 io.netty.handler.codec.spdy;
17  
18  import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;
19  
20  import io.netty.util.internal.StringUtil;
21  
22  /**
23   * The default {@link SpdyGoAwayFrame} implementation.
24   */
25  public class DefaultSpdyGoAwayFrame implements SpdyGoAwayFrame {
26  
27      private int lastGoodStreamId;
28      private SpdySessionStatus status;
29  
30      /**
31       * Creates a new instance.
32       *
33       * @param lastGoodStreamId the Last-good-stream-ID of this frame
34       */
35      public DefaultSpdyGoAwayFrame(int lastGoodStreamId) {
36          this(lastGoodStreamId, 0);
37      }
38  
39      /**
40       * Creates a new instance.
41       *
42       * @param lastGoodStreamId the Last-good-stream-ID of this frame
43       * @param statusCode       the Status code of this frame
44       */
45      public DefaultSpdyGoAwayFrame(int lastGoodStreamId, int statusCode) {
46          this(lastGoodStreamId, SpdySessionStatus.valueOf(statusCode));
47      }
48  
49      /**
50       * Creates a new instance.
51       *
52       * @param lastGoodStreamId the Last-good-stream-ID of this frame
53       * @param status           the status of this frame
54       */
55      public DefaultSpdyGoAwayFrame(int lastGoodStreamId, SpdySessionStatus status) {
56          setLastGoodStreamId(lastGoodStreamId);
57          setStatus(status);
58      }
59  
60      @Override
61      public int lastGoodStreamId() {
62          return lastGoodStreamId;
63      }
64  
65      @Override
66      public SpdyGoAwayFrame setLastGoodStreamId(int lastGoodStreamId) {
67          checkPositiveOrZero(lastGoodStreamId, "lastGoodStreamId");
68          this.lastGoodStreamId = lastGoodStreamId;
69          return this;
70      }
71  
72      @Override
73      public SpdySessionStatus status() {
74          return status;
75      }
76  
77      @Override
78      public SpdyGoAwayFrame setStatus(SpdySessionStatus status) {
79          this.status = status;
80          return this;
81      }
82  
83      @Override
84      public String toString() {
85          return new StringBuilder()
86              .append(StringUtil.simpleClassName(this))
87              .append(StringUtil.NEWLINE)
88              .append("--> Last-good-stream-ID = ")
89              .append(lastGoodStreamId())
90              .append(StringUtil.NEWLINE)
91              .append("--> Status: ")
92              .append(status())
93              .toString();
94      }
95  }