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[onos-2603] - Implement LinkState Link attributes-MPLS protocol mask
Change-Id: Ib0d8d098a5ecb77f98df60a6f6d6cfd8bd121c75
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bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMplsProtocolMask.java
0 → 100755
1 | +/* | ||
2 | + * Copyright 2015 Open Networking Laboratory | ||
3 | + * | ||
4 | + * Licensed under the Apache License, Version 2.0 (the "License"); | ||
5 | + * you may not use this file except in compliance with the License. | ||
6 | + * 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, | ||
12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
13 | + * See the License for the specific language governing permissions and | ||
14 | + * limitations under the License. | ||
15 | + */ | ||
16 | +package org.onosproject.bgpio.types.attr; | ||
17 | + | ||
18 | +import java.util.Objects; | ||
19 | + | ||
20 | +import org.jboss.netty.buffer.ChannelBuffer; | ||
21 | +import org.onosproject.bgpio.exceptions.BGPParseException; | ||
22 | +import org.onosproject.bgpio.types.BGPErrorType; | ||
23 | +import org.onosproject.bgpio.types.BGPValueType; | ||
24 | +import org.onosproject.bgpio.util.Validation; | ||
25 | +import org.slf4j.Logger; | ||
26 | +import org.slf4j.LoggerFactory; | ||
27 | + | ||
28 | +import com.google.common.base.MoreObjects; | ||
29 | + | ||
30 | +/** | ||
31 | + * Implements BGP MPLS protocol mask attribute. | ||
32 | + */ | ||
33 | +public class BgpLinkAttrMplsProtocolMask implements BGPValueType { | ||
34 | + | ||
35 | + protected static final Logger log = LoggerFactory | ||
36 | + .getLogger(BgpLinkAttrMplsProtocolMask.class); | ||
37 | + | ||
38 | + public static final int ATTRLINK_MPLSPROTOMASK = 1094; | ||
39 | + public static final int MASK_BYTE_LEN = 1; | ||
40 | + | ||
41 | + private final boolean bLdp; | ||
42 | + private final boolean bRsvpTe; | ||
43 | + | ||
44 | + public static final byte FIRST_BIT = (byte) 0x80; | ||
45 | + public static final byte SECOND_BIT = 0x40; | ||
46 | + | ||
47 | + /** | ||
48 | + * Constructor to initialize the values. | ||
49 | + * | ||
50 | + * @param bLdp boolean value true if LDP flag is available | ||
51 | + * @param bRsvpTe boolean value true if RSVP TE information is available | ||
52 | + */ | ||
53 | + public BgpLinkAttrMplsProtocolMask(boolean bLdp, boolean bRsvpTe) { | ||
54 | + this.bLdp = bLdp; | ||
55 | + this.bRsvpTe = bRsvpTe; | ||
56 | + } | ||
57 | + | ||
58 | + /** | ||
59 | + * Returns object of this class with specified values. | ||
60 | + * | ||
61 | + * @param bLdp boolean value true if LDP flag is available | ||
62 | + * @param bRsvpTe boolean value true if RSVP TE information is available | ||
63 | + * @return object of BgpLinkAttrMplsProtocolMask | ||
64 | + */ | ||
65 | + public static BgpLinkAttrMplsProtocolMask of(final boolean bLdp, | ||
66 | + final boolean bRsvpTe) { | ||
67 | + return new BgpLinkAttrMplsProtocolMask(bLdp, bRsvpTe); | ||
68 | + } | ||
69 | + | ||
70 | + /** | ||
71 | + * Reads the BGP link attributes MPLS protocol mask. | ||
72 | + * | ||
73 | + * @param cb Channel buffer | ||
74 | + * @return object of type BgpLinkAttrMPLSProtocolMask | ||
75 | + * @throws BGPParseException while parsing BgpLinkAttrMplsProtocolMask | ||
76 | + */ | ||
77 | + public static BgpLinkAttrMplsProtocolMask read(ChannelBuffer cb) | ||
78 | + throws BGPParseException { | ||
79 | + boolean bLdp = false; | ||
80 | + boolean bRsvpTe = false; | ||
81 | + | ||
82 | + short lsAttrLength = cb.readShort(); | ||
83 | + | ||
84 | + if ((lsAttrLength != MASK_BYTE_LEN) | ||
85 | + || (cb.readableBytes() < lsAttrLength)) { | ||
86 | + Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR, | ||
87 | + BGPErrorType.ATTRIBUTE_LENGTH_ERROR, | ||
88 | + lsAttrLength); | ||
89 | + } | ||
90 | + | ||
91 | + byte flags = cb.readByte(); | ||
92 | + | ||
93 | + bLdp = ((flags & (byte) FIRST_BIT) == FIRST_BIT); | ||
94 | + bRsvpTe = ((flags & (byte) SECOND_BIT) == SECOND_BIT); | ||
95 | + | ||
96 | + return BgpLinkAttrMplsProtocolMask.of(bLdp, bRsvpTe); | ||
97 | + } | ||
98 | + | ||
99 | + /** | ||
100 | + * Returns true if LDP bit is set. | ||
101 | + * | ||
102 | + * @return True if LDP information is set else false. | ||
103 | + */ | ||
104 | + public boolean ldpBit() { | ||
105 | + return bLdp; | ||
106 | + } | ||
107 | + | ||
108 | + /** | ||
109 | + * Returns RSVP TE information. | ||
110 | + * | ||
111 | + * @return True if RSVP TE information is set else false. | ||
112 | + */ | ||
113 | + public boolean rsvpBit() { | ||
114 | + return bRsvpTe; | ||
115 | + } | ||
116 | + | ||
117 | + @Override | ||
118 | + public short getType() { | ||
119 | + return ATTRLINK_MPLSPROTOMASK; | ||
120 | + } | ||
121 | + | ||
122 | + @Override | ||
123 | + public int hashCode() { | ||
124 | + return Objects.hash(bLdp, bRsvpTe); | ||
125 | + } | ||
126 | + | ||
127 | + @Override | ||
128 | + public boolean equals(Object obj) { | ||
129 | + if (this == obj) { | ||
130 | + return true; | ||
131 | + } | ||
132 | + | ||
133 | + if (obj instanceof BgpLinkAttrMplsProtocolMask) { | ||
134 | + BgpLinkAttrMplsProtocolMask other = (BgpLinkAttrMplsProtocolMask) obj; | ||
135 | + return Objects.equals(bLdp, other.bLdp) | ||
136 | + && Objects.equals(bRsvpTe, other.bRsvpTe); | ||
137 | + } | ||
138 | + return false; | ||
139 | + } | ||
140 | + | ||
141 | + @Override | ||
142 | + public int write(ChannelBuffer cb) { | ||
143 | + // TODO This will be implemented in the next version | ||
144 | + return 0; | ||
145 | + } | ||
146 | + | ||
147 | + @Override | ||
148 | + public String toString() { | ||
149 | + return MoreObjects.toStringHelper(getClass()) | ||
150 | + .add("bLdp", bLdp).add("bRsvpTe", bRsvpTe).toString(); | ||
151 | + } | ||
152 | +} |
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