Mahesh Poojary S | 5afd06c | 2015-08-21 14:51:04 +0530 | [diff] [blame] | 1 | /*
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| 2 | * Copyright 2015 Open Networking Laboratory
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | package org.onosproject.pcepio.types;
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| 17 |
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| 18 | import java.util.Objects;
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| 19 |
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| 20 | import org.jboss.netty.buffer.ChannelBuffer;
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| 21 | import org.onosproject.pcepio.protocol.PcepVersion;
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| 22 | import org.slf4j.Logger;
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| 23 | import org.slf4j.LoggerFactory;
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| 24 |
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| 25 | import com.google.common.base.MoreObjects;
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| 26 | import com.google.common.base.MoreObjects.ToStringHelper;
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| 27 |
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| 28 | /**
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| 29 | * Provides IPv6 TE Router Id of Local Node. Reference :[RFC6119]/4.1.
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| 30 | */
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| 31 | public class IPv6TERouterIdofLocalNodeTlv implements PcepValueType {
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| 32 | protected static final Logger log = LoggerFactory.getLogger(IPv6TERouterIdofLocalNodeTlv.class);
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| 33 |
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| 34 | public static final short TYPE = 140; //TDB26
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| 35 | public static final short LENGTH = 20;
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| 36 | public static final byte VALUE_LENGTH = 18;
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| 37 |
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| 38 | private static final byte[] NONE_VAL = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
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| 39 | public static final IPv6TERouterIdofLocalNodeTlv NONE = new IPv6TERouterIdofLocalNodeTlv(NONE_VAL);
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| 40 |
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| 41 | private static final byte[] NO_MASK_VAL = {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
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| 42 | (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
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| 43 | (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF };
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| 44 | public static final IPv6TERouterIdofLocalNodeTlv NO_MASK = new IPv6TERouterIdofLocalNodeTlv(NO_MASK_VAL);
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| 45 | public static final IPv6TERouterIdofLocalNodeTlv FULL_MASK = NONE;
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| 46 |
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| 47 | private final byte[] rawValue;
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| 48 |
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| 49 | /**
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| 50 | * Constructor to initialize rawValue.
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| 51 | *
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| 52 | * @param rawValue IPv6TERouterIdofLocalNodeTlv
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| 53 | */
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| 54 | public IPv6TERouterIdofLocalNodeTlv(byte[] rawValue) {
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| 55 | this.rawValue = rawValue;
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| 56 | }
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| 57 |
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| 58 | /**
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| 59 | * Returns newly created IPv6TERouterIdofLocalNodeTlv object.
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| 60 | *
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| 61 | * @param raw IPv6 TE Router Id of Local Node
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| 62 | * @return object of IPv6TERouterIdofLocalNodeTlv
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| 63 | */
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| 64 | public static IPv6TERouterIdofLocalNodeTlv of(final byte[] raw) {
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| 65 | //check NONE_VAL
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| 66 | boolean bFoundNONE = true;
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| 67 | //value starts from 3rd byte.
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| 68 | for (int i = 2; i < 20; ++i) {
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| 69 | if (NONE_VAL[i] != raw[i]) {
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| 70 | bFoundNONE = false;
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| 71 | }
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| 72 | }
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| 73 |
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| 74 | if (bFoundNONE) {
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| 75 | return NONE;
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| 76 | }
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| 77 |
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| 78 | //check NO_MASK_VAL
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| 79 | boolean bFoundNoMask = true;
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| 80 | //value starts from 3rd byte.
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| 81 | for (int i = 2; i < 20; ++i) {
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| 82 | if (0xFF != raw[i]) {
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| 83 | bFoundNoMask = false;
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| 84 | }
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| 85 | }
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| 86 | if (bFoundNoMask) {
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| 87 | return NO_MASK;
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| 88 | }
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| 89 |
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| 90 | return new IPv6TERouterIdofLocalNodeTlv(raw);
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| 91 | }
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| 92 |
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| 93 | /**
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| 94 | * Returns value of IPv6 TE Router Id of Local Node.
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| 95 | *
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| 96 | * @return byte array value of rawValue
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| 97 | */
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| 98 | public byte[] getBytes() {
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| 99 | return rawValue;
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| 100 | }
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| 101 |
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| 102 | /**
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| 103 | * Returns value of IPv6 TE Router Id of Local Node.
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| 104 | *
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| 105 | * @return byte array value of rawValue
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| 106 | */
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| 107 | public byte[] getValue() {
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| 108 | return rawValue;
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| 109 | }
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| 110 |
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| 111 | @Override
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| 112 | public PcepVersion getVersion() {
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| 113 | return PcepVersion.PCEP_1;
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| 114 | }
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| 115 |
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| 116 | @Override
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| 117 | public short getType() {
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| 118 | return TYPE;
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| 119 | }
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| 120 |
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| 121 | @Override
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| 122 | public short getLength() {
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| 123 | return LENGTH;
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| 124 | }
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| 125 |
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| 126 | @Override
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| 127 | public int hashCode() {
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| 128 | return Objects.hash(rawValue);
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| 129 | }
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| 130 |
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| 131 | @Override
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| 132 | public boolean equals(Object obj) {
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| 133 | if (this == obj) {
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| 134 | return true;
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| 135 | }
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| 136 | if (obj instanceof IPv6TERouterIdofLocalNodeTlv) {
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| 137 | IPv6TERouterIdofLocalNodeTlv other = (IPv6TERouterIdofLocalNodeTlv) obj;
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| 138 | return Objects.equals(rawValue, other.rawValue);
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| 139 | }
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| 140 | return false;
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| 141 | }
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| 142 |
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| 143 | @Override
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| 144 | public int write(ChannelBuffer c) {
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| 145 | int iStartIndex = c.writerIndex();
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| 146 | c.writeShort(TYPE);
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| 147 | c.writeShort(LENGTH);
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| 148 | c.writeBytes(rawValue);
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| 149 | return c.writerIndex() - iStartIndex;
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| 150 | }
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| 151 |
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| 152 | /**
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| 153 | * Reads the channel buffer and returns object of IPv6TERouterIdofLocalNodeTlv.
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| 154 | *
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| 155 | * @param c input channel buffer
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| 156 | * @return object of IPv6TERouterIdofLocalNodeTlv
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| 157 | */
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| 158 | public static IPv6TERouterIdofLocalNodeTlv read20Bytes(ChannelBuffer c) {
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| 159 | byte[] yTemp = new byte[20];
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| 160 | c.readBytes(yTemp, 0, 20);
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| 161 | return IPv6TERouterIdofLocalNodeTlv.of(yTemp);
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| 162 | }
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| 163 |
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| 164 | @Override
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| 165 | public String toString() {
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| 166 | ToStringHelper toStrHelper = MoreObjects.toStringHelper(getClass());
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| 167 |
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| 168 | toStrHelper.add("Type", TYPE);
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| 169 | toStrHelper.add("Length", LENGTH);
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| 170 |
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| 171 | StringBuffer result = new StringBuffer();
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| 172 | for (byte b : rawValue) {
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| 173 | result.append(String.format("%02X ", b));
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| 174 | }
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| 175 | toStrHelper.add("Value", result);
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| 176 |
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| 177 | return toStrHelper.toString();
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| 178 | }
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| 179 | }
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