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 io.netty.handler.codec.spdy;
17
18 /**
19 * The SPDY session status code and its description.
20 */
21 public class SpdySessionStatus implements Comparable<SpdySessionStatus> {
22
23 /**
24 * 0 OK
25 */
26 public static final SpdySessionStatus OK =
27 new SpdySessionStatus(0, "OK");
28
29 /**
30 * 1 Protocol Error
31 */
32 public static final SpdySessionStatus PROTOCOL_ERROR =
33 new SpdySessionStatus(1, "PROTOCOL_ERROR");
34
35 /**
36 * 2 Internal Error
37 */
38 public static final SpdySessionStatus INTERNAL_ERROR =
39 new SpdySessionStatus(2, "INTERNAL_ERROR");
40
41 /**
42 * Returns the {@link SpdySessionStatus} represented by the specified code.
43 * If the specified code is a defined SPDY status code, a cached instance
44 * will be returned. Otherwise, a new instance will be returned.
45 */
46 public static SpdySessionStatus valueOf(int code) {
47 switch (code) {
48 case 0:
49 return OK;
50 case 1:
51 return PROTOCOL_ERROR;
52 case 2:
53 return INTERNAL_ERROR;
54 }
55
56 return new SpdySessionStatus(code, "UNKNOWN (" + code + ')');
57 }
58
59 private final int code;
60
61 private final String statusPhrase;
62
63 /**
64 * Creates a new instance with the specified {@code code} and its
65 * {@code statusPhrase}.
66 */
67 public SpdySessionStatus(int code, String statusPhrase) {
68 if (statusPhrase == null) {
69 throw new NullPointerException("statusPhrase");
70 }
71
72 this.code = code;
73 this.statusPhrase = statusPhrase;
74 }
75
76 /**
77 * Returns the code of this status.
78 */
79 public int code() {
80 return code;
81 }
82
83 /**
84 * Returns the status phrase of this status.
85 */
86 public String statusPhrase() {
87 return statusPhrase;
88 }
89
90 @Override
91 public int hashCode() {
92 return code();
93 }
94
95 @Override
96 public boolean equals(Object o) {
97 if (!(o instanceof SpdySessionStatus)) {
98 return false;
99 }
100
101 return code() == ((SpdySessionStatus) o).code();
102 }
103
104 @Override
105 public String toString() {
106 return statusPhrase();
107 }
108
109 @Override
110 public int compareTo(SpdySessionStatus o) {
111 return code() - o.code();
112 }
113 }