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[onos-2603] - Implement LinkState Link attributes-EXT Route Tag
Change-Id: Ieeab8f46b81e55c0dc4ec89e8578cc1f34602875
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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 static com.google.common.base.Preconditions.checkNotNull; | ||
19 | + | ||
20 | +import java.util.ArrayList; | ||
21 | +import java.util.List; | ||
22 | +import java.util.Objects; | ||
23 | + | ||
24 | +import org.jboss.netty.buffer.ChannelBuffer; | ||
25 | +import org.onosproject.bgpio.exceptions.BGPParseException; | ||
26 | +import org.onosproject.bgpio.types.BGPErrorType; | ||
27 | +import org.onosproject.bgpio.types.BGPValueType; | ||
28 | +import org.onosproject.bgpio.util.Validation; | ||
29 | +import org.slf4j.Logger; | ||
30 | +import org.slf4j.LoggerFactory; | ||
31 | + | ||
32 | +import com.google.common.base.MoreObjects; | ||
33 | + | ||
34 | +/** | ||
35 | + * Implements BGP prefix route Extended tag attribute. | ||
36 | + */ | ||
37 | +public class BgpPrefixAttrExtRouteTag implements BGPValueType { | ||
38 | + | ||
39 | + protected static final Logger log = LoggerFactory | ||
40 | + .getLogger(BgpPrefixAttrExtRouteTag.class); | ||
41 | + | ||
42 | + public static final int ATTR_PREFIX_EXTROUTETAG = 1154; | ||
43 | + public static final int ATTR_PREFIX_EXT_LEN = 8; | ||
44 | + | ||
45 | + /* Prefix Route Tag */ | ||
46 | + private List<Long> pfxExtRouteTag = new ArrayList<Long>(); | ||
47 | + | ||
48 | + /** | ||
49 | + * Constructor to initialize the values. | ||
50 | + * | ||
51 | + * @param pfxExtRouteTag Extended route tag | ||
52 | + */ | ||
53 | + public BgpPrefixAttrExtRouteTag(List<Long> pfxExtRouteTag) { | ||
54 | + this.pfxExtRouteTag = checkNotNull(pfxExtRouteTag); | ||
55 | + } | ||
56 | + | ||
57 | + /** | ||
58 | + * Returns object of this class with specified values. | ||
59 | + * | ||
60 | + * @param pfxExtRouteTag Prefix Metric | ||
61 | + * @return object of BgpPrefixAttrMetric | ||
62 | + */ | ||
63 | + public static BgpPrefixAttrExtRouteTag of(ArrayList<Long> pfxExtRouteTag) { | ||
64 | + return new BgpPrefixAttrExtRouteTag(pfxExtRouteTag); | ||
65 | + } | ||
66 | + | ||
67 | + /** | ||
68 | + * Reads the Extended Tag. | ||
69 | + * | ||
70 | + * @param cb ChannelBuffer | ||
71 | + * @return object of BgpPrefixAttrExtRouteTag | ||
72 | + * @throws BGPParseException while parsing BgpPrefixAttrExtRouteTag | ||
73 | + */ | ||
74 | + public static BgpPrefixAttrExtRouteTag read(ChannelBuffer cb) | ||
75 | + throws BGPParseException { | ||
76 | + ArrayList<Long> pfxExtRouteTag = new ArrayList<Long>(); | ||
77 | + long temp; | ||
78 | + | ||
79 | + short lsAttrLength = cb.readShort(); | ||
80 | + int len = lsAttrLength / ATTR_PREFIX_EXT_LEN; | ||
81 | + | ||
82 | + if (cb.readableBytes() < lsAttrLength) { | ||
83 | + Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR, | ||
84 | + BGPErrorType.ATTRIBUTE_LENGTH_ERROR, | ||
85 | + lsAttrLength); | ||
86 | + } | ||
87 | + | ||
88 | + for (int i = 0; i < len; i++) { | ||
89 | + temp = cb.readLong(); | ||
90 | + pfxExtRouteTag.add(new Long(temp)); | ||
91 | + } | ||
92 | + | ||
93 | + return new BgpPrefixAttrExtRouteTag(pfxExtRouteTag); | ||
94 | + } | ||
95 | + | ||
96 | + /** | ||
97 | + * Returns Extended route tag. | ||
98 | + * | ||
99 | + * @return route tag | ||
100 | + */ | ||
101 | + public List<Long> pfxExtRouteTag() { | ||
102 | + return pfxExtRouteTag; | ||
103 | + } | ||
104 | + | ||
105 | + @Override | ||
106 | + public short getType() { | ||
107 | + return ATTR_PREFIX_EXTROUTETAG; | ||
108 | + } | ||
109 | + | ||
110 | + @Override | ||
111 | + public int hashCode() { | ||
112 | + return Objects.hash(pfxExtRouteTag); | ||
113 | + } | ||
114 | + | ||
115 | + @Override | ||
116 | + public boolean equals(Object obj) { | ||
117 | + if (this == obj) { | ||
118 | + return true; | ||
119 | + } | ||
120 | + | ||
121 | + if (obj instanceof BgpPrefixAttrExtRouteTag) { | ||
122 | + BgpPrefixAttrExtRouteTag other = (BgpPrefixAttrExtRouteTag) obj; | ||
123 | + return Objects.equals(pfxExtRouteTag, other.pfxExtRouteTag); | ||
124 | + } | ||
125 | + return false; | ||
126 | + } | ||
127 | + | ||
128 | + @Override | ||
129 | + public int write(ChannelBuffer cb) { | ||
130 | + // TODO This will be implemented in the next version | ||
131 | + return 0; | ||
132 | + } | ||
133 | + | ||
134 | + @Override | ||
135 | + public String toString() { | ||
136 | + return MoreObjects.toStringHelper(getClass()).omitNullValues() | ||
137 | + .add("pfxExtRouteTag", pfxExtRouteTag).toString(); | ||
138 | + } | ||
139 | +} |
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