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 |
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| 27 | /**
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| 28 | * Provides MPLS Protocol Mask.
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| 29 | */
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| 30 | public class MPLSProtocolMaskTlv implements PcepValueType {
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| 31 |
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| 32 | /* Reference :[I-D.ietf-idr-ls-distribution]/3.3.2.2
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| 33 | * 0 1 2 3
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| 34 | 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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| 35 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 36 | | Type=TDB39 | Length =1 |
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| 37 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 38 | |L|R| Reserved |
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| 39 | +-+-+-+-+-+-+-+-+
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| 40 | */
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| 41 | protected static final Logger log = LoggerFactory.getLogger(MPLSProtocolMaskTlv.class);
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| 42 |
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| 43 | public static final short TYPE = 1094; //TDB39
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| 44 | public static final short LENGTH = 1;
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| 45 | public static final int SET = 1;
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| 46 | public static final byte LFLAG_SET = (byte) 0x80;
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| 47 | public static final byte RFLAG_SET = 0x40;
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| 48 |
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| 49 | private final byte rawValue;
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| 50 | private final boolean bLFlag;
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| 51 | private final boolean bRFlag;
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| 52 | private final boolean isRawValueSet;
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| 53 |
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| 54 | /**
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| 55 | * constructor to initialize rawValue.
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| 56 | *
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| 57 | * @param rawValue MPLS Protocol Mask Flag Bits
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| 58 | */
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| 59 | public MPLSProtocolMaskTlv(byte rawValue) {
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| 60 | this.rawValue = rawValue;
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| 61 | isRawValueSet = true;
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| 62 | byte temp = rawValue;
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| 63 | if ((temp & LFLAG_SET) == SET) {
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| 64 | this.bLFlag = true;
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| 65 |
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| 66 | } else {
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| 67 | this.bLFlag = false;
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| 68 | }
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| 69 | if ((temp & RFLAG_SET) == SET) {
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| 70 | this.bRFlag = true;
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| 71 | } else {
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| 72 | this.bRFlag = false;
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| 73 | }
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| 74 | }
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| 75 |
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| 76 | /**
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| 77 | * constructor to initialize different Flags.
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| 78 | *
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| 79 | * @param bLFlag L-flag
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| 80 | * @param bRFlag R-flag
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| 81 | */
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| 82 | public MPLSProtocolMaskTlv(boolean bLFlag, boolean bRFlag) {
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| 83 | this.bLFlag = bLFlag;
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| 84 | this.bRFlag = bRFlag;
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| 85 | this.rawValue = 0;
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| 86 | isRawValueSet = false;
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| 87 | }
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| 88 |
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| 89 | /**
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| 90 | * Returns newly created MPLSProtocolMaskTlv object.
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| 91 | *
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| 92 | * @param raw MPLS Protocol Mask Tlv
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| 93 | * @return new object of MPLS Protocol Mask Tlv
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| 94 | */
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| 95 | public static MPLSProtocolMaskTlv of(final byte raw) {
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| 96 | return new MPLSProtocolMaskTlv(raw);
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| 97 | }
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| 98 |
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| 99 | /**
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| 100 | * Returns L-flag.
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| 101 | *
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| 102 | * @return bLFlag L-flag
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| 103 | */
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| 104 | public boolean getbLFlag() {
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| 105 | return bLFlag;
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| 106 | }
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| 107 |
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| 108 | /**
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| 109 | * Returns R-flag.
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| 110 | *
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| 111 | * @return bRFlag R-flag
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| 112 | */
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| 113 | public boolean getbRFlag() {
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| 114 | return bRFlag;
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| 115 | }
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| 116 |
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| 117 | /**
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| 118 | * Returns raw value.
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| 119 | *
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| 120 | * @return rawValue raw value
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| 121 | */
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| 122 | public byte getByte() {
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| 123 | return rawValue;
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| 124 | }
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| 125 |
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| 126 | @Override
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| 127 | public PcepVersion getVersion() {
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| 128 | return PcepVersion.PCEP_1;
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| 129 | }
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| 130 |
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| 131 | @Override
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| 132 | public short getType() {
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| 133 | return TYPE;
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| 134 | }
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| 135 |
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| 136 | @Override
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| 137 | public short getLength() {
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| 138 | return LENGTH;
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| 139 | }
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| 140 |
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| 141 | @Override
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| 142 | public int hashCode() {
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| 143 | if (isRawValueSet) {
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| 144 | return Objects.hash(rawValue);
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| 145 | } else {
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| 146 | return Objects.hash(bLFlag, bRFlag);
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| 147 | }
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| 148 | }
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| 149 |
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| 150 | @Override
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| 151 | public boolean equals(Object obj) {
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| 152 | if (this == obj) {
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| 153 | return true;
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| 154 | }
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| 155 | if (obj instanceof MPLSProtocolMaskTlv) {
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| 156 | MPLSProtocolMaskTlv other = (MPLSProtocolMaskTlv) obj;
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| 157 | if (isRawValueSet) {
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Mahesh Poojary S | 5afd06c | 2015-08-21 14:51:04 +0530 | [diff] [blame] | 158 | return Objects.equals(this.rawValue, other.rawValue);
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Phaneendra Manda | 5518067 | 2015-08-25 23:42:55 +0530 | [diff] [blame] | 159 | } else {
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| 160 | return Objects.equals(this.bLFlag, other.bLFlag) && Objects.equals(this.bRFlag, other.bRFlag);
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Mahesh Poojary S | 5afd06c | 2015-08-21 14:51:04 +0530 | [diff] [blame] | 161 | }
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| 162 | }
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| 163 | return false;
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| 164 | }
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| 165 |
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| 166 | @Override
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| 167 | public int write(ChannelBuffer c) {
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| 168 | int iLenStartIndex = c.writerIndex();
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| 169 | c.writeShort(TYPE);
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| 170 | c.writeShort(LENGTH);
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| 171 | if (isRawValueSet) {
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| 172 | c.writeByte(rawValue);
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| 173 | } else {
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| 174 | byte temp = 0;
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| 175 | if (bLFlag) {
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| 176 | temp = (byte) (temp | LFLAG_SET);
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| 177 | }
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| 178 | if (bRFlag) {
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| 179 | temp = (byte) (temp | RFLAG_SET);
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| 180 | }
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| 181 | c.writeByte(temp);
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| 182 | }
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| 183 | return c.writerIndex() - iLenStartIndex;
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| 184 | }
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| 185 |
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| 186 | /**
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| 187 | * Reads the channel buffer and returns object of MPLS Protocol Mask Tlv.
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| 188 | *
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| 189 | * @param c input channel buffer
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| 190 | * @return object of MPLS Protocol Mask Tlv
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| 191 | */
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| 192 | public static PcepValueType read(ChannelBuffer c) {
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| 193 | byte temp = c.readByte();
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| 194 | boolean bLFlag;
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| 195 | boolean bRFlag;
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| 196 |
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| 197 | if ((temp & LFLAG_SET) == SET) {
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| 198 | bLFlag = true;
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| 199 | } else {
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| 200 | bLFlag = false;
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| 201 | }
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| 202 | if ((temp & RFLAG_SET) == SET) {
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| 203 | bRFlag = true;
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| 204 | } else {
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| 205 | bRFlag = false;
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| 206 | }
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| 207 | return new MPLSProtocolMaskTlv(bLFlag, bRFlag);
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| 208 | }
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| 209 |
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| 210 | @Override
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| 211 | public String toString() {
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| 212 | return MoreObjects.toStringHelper(getClass()).add("Type", TYPE).add("Length", LENGTH).add("Value", rawValue)
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| 213 | .toString();
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| 214 | }
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| 215 | }
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