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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  /**
19   * The SPDY session status code and its description.
20   * @apiviz.exclude
21   */
22  public class SpdySessionStatus implements Comparable<SpdySessionStatus> {
23  
24      /**
25       * 0 OK
26       */
27      public static final SpdySessionStatus OK =
28          new SpdySessionStatus(0, "OK");
29  
30      /**
31       * 1 Protocol Error
32       */
33      public static final SpdySessionStatus PROTOCOL_ERROR =
34          new SpdySessionStatus(1, "PROTOCOL_ERROR");
35  
36      /**
37       * 2 Internal Error
38       */
39      public static final SpdySessionStatus INTERNAL_ERROR =
40          new SpdySessionStatus(2, "INTERNAL_ERROR");
41  
42      /**
43       * Returns the {@link SpdySessionStatus} represented by the specified code.
44       * If the specified code is a defined SPDY status code, a cached instance
45       * will be returned.  Otherwise, a new instance will be returned.
46       */
47      public static SpdySessionStatus valueOf(int code) {
48          switch (code) {
49          case 0:
50              return OK;
51          case 1:
52              return PROTOCOL_ERROR;
53          case 2:
54              return INTERNAL_ERROR;
55          }
56  
57          return new SpdySessionStatus(code, "UNKNOWN (" + code + ')');
58      }
59  
60      private final int code;
61  
62      private final String statusPhrase;
63  
64      /**
65       * Creates a new instance with the specified {@code code} and its
66       * {@code statusPhrase}.
67       */
68      public SpdySessionStatus(int code, String statusPhrase) {
69          if (statusPhrase == null) {
70              throw new NullPointerException("statusPhrase");
71          }
72  
73          this.code = code;
74          this.statusPhrase = statusPhrase;
75      }
76  
77      /**
78       * Returns the code of this status.
79       */
80      public int getCode() {
81          return code;
82      }
83  
84      /**
85       * Returns the status phrase of this status.
86       */
87      public String getStatusPhrase() {
88          return statusPhrase;
89      }
90  
91      @Override
92      public int hashCode() {
93          return getCode();
94      }
95  
96      @Override
97      public boolean equals(Object o) {
98          if (!(o instanceof SpdySessionStatus)) {
99              return false;
100         }
101 
102         return getCode() == ((SpdySessionStatus) o).getCode();
103     }
104 
105     @Override
106     public String toString() {
107         return getStatusPhrase();
108     }
109 
110     public int compareTo(SpdySessionStatus o) {
111         return getCode() - o.getCode();
112     }
113 }