Bharat saraswal | 3077717 | 2015-08-21 15:51:10 +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 |
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| 17 | package org.onosproject.pcepio.protocol.ver1;
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| 18 |
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| 19 | import org.jboss.netty.buffer.ChannelBuffer;
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| 20 | import org.onosproject.pcepio.exceptions.PcepParseException;
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| 21 | import org.onosproject.pcepio.protocol.PcepFecObjectIPv6;
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| 22 | import org.onosproject.pcepio.protocol.PcepVersion;
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| 23 | import org.onosproject.pcepio.types.PcepObjectHeader;
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| 24 | import org.slf4j.Logger;
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| 25 | import org.slf4j.LoggerFactory;
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| 26 |
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| 27 | import com.google.common.base.MoreObjects;
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| 28 |
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Phanendra Manda | 51fb9c2 | 2015-09-01 16:17:41 +0530 | [diff] [blame] | 29 | /**
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| 30 | * Provides Pcep Fec Object IPv6 object.
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| 31 | */
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Bharat saraswal | 3077717 | 2015-08-21 15:51:10 +0530 | [diff] [blame] | 32 | public class PcepFecObjectIPv6Ver1 implements PcepFecObjectIPv6 {
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| 33 |
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| 34 | /*
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| 35 | * ref : draft-zhao-pce-pcep-extension-for-pce-controller-01 , section : 7.5
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| 36 | *
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| 37 | 0 1 2 3
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| 38 | 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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| 39 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 40 | | |
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| 41 | // IPv6 Node ID (16 bytes) //
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| 42 | | |
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| 43 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 44 |
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| 45 | FEC Object-Type is 2 IPv6 Node ID
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| 46 | */
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| 47 | protected static final Logger log = LoggerFactory.getLogger(PcepFecObjectIPv6Ver1.class);
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| 48 |
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| 49 | public static final byte FEC_OBJ_TYPE = 2;
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| 50 | public static final byte FEC_OBJ_CLASS = 63; //to be defined
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| 51 | public static final byte FEC_OBJECT_VERSION = 1;
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| 52 | public static final short FEC_OBJ_MINIMUM_LENGTH = 20;
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| 53 | public static final int MINIMUM_COMMON_HEADER_LENGTH = 4;
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| 54 | public static final int IPV6_ADDRESS_LENGTH = 16;
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| 55 |
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| 56 | static final PcepObjectHeader DEFAULT_FEC_OBJECT_HEADER = new PcepObjectHeader(FEC_OBJ_CLASS, FEC_OBJ_TYPE,
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| 57 | PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED, FEC_OBJ_MINIMUM_LENGTH);
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| 58 |
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| 59 | private PcepObjectHeader fecObjHeader;
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| 60 | private byte[] nodeID = new byte[IPV6_ADDRESS_LENGTH];
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| 61 |
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| 62 | /**
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| 63 | * Constructor to initialize parameters for PCEP fec object.
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| 64 | *
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| 65 | * @param fecObjHeader Fec object header
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| 66 | * @param nodeID node ID
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| 67 | */
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| 68 | public PcepFecObjectIPv6Ver1(PcepObjectHeader fecObjHeader, byte[] nodeID) {
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| 69 | this.fecObjHeader = fecObjHeader;
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| 70 | this.nodeID = nodeID;
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| 71 | }
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| 72 |
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| 73 | /**
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| 74 | * Sets the Object header.
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| 75 | *
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| 76 | * @param obj object header
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| 77 | */
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| 78 | public void setFecIpv6ObjHeader(PcepObjectHeader obj) {
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| 79 | this.fecObjHeader = obj;
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| 80 | }
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| 81 |
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| 82 | @Override
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| 83 | public void setNodeID(byte[] nodeID) {
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| 84 | this.nodeID = nodeID;
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| 85 | }
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| 86 |
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| 87 | /**
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| 88 | * Returns object header.
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| 89 | *
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| 90 | * @return fec Object Header
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| 91 | */
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| 92 | public PcepObjectHeader getFecIpv6ObjHeader() {
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| 93 | return this.fecObjHeader;
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| 94 | }
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| 95 |
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| 96 | @Override
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| 97 | public byte[] getNodeID() {
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| 98 | return this.nodeID;
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| 99 | }
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| 100 |
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| 101 | /**
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| 102 | * reads the channel buffer and returns object of PcepFecObjectIPv6.
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| 103 | *
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| 104 | * @param cb of channel buffer.
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| 105 | * @return object of PcepFecObjectIPv6
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| 106 | * @throws PcepParseException when fails to read from channel buffer
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| 107 | */
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| 108 | public static PcepFecObjectIPv6 read(ChannelBuffer cb) throws PcepParseException {
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| 109 |
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| 110 | PcepObjectHeader fecObjHeader;
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| 111 | byte[] nodeID = new byte[IPV6_ADDRESS_LENGTH];
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| 112 | fecObjHeader = PcepObjectHeader.read(cb);
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| 113 | cb.readBytes(nodeID, 0, IPV6_ADDRESS_LENGTH);
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| 114 | return new PcepFecObjectIPv6Ver1(fecObjHeader, nodeID);
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| 115 | }
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| 116 |
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| 117 | @Override
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| 118 | public int write(ChannelBuffer cb) throws PcepParseException {
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| 119 |
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| 120 | int objStartIndex = cb.writerIndex();
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| 121 |
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| 122 | //write common header
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| 123 | int objLenIndex = fecObjHeader.write(cb);
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| 124 | cb.writeBytes(nodeID);
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| 125 |
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| 126 | //now write FEC IPv4 Object Length
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| 127 | cb.setShort(objLenIndex, (short) (cb.writerIndex() - objStartIndex));
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| 128 | return cb.writerIndex();
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| 129 | }
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| 130 |
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| 131 | /**
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| 132 | * Builder class for PCEP fec object IPv6.
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| 133 | */
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| 134 | public static class Builder implements PcepFecObjectIPv6.Builder {
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| 135 | private boolean bIsHeaderSet = false;
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| 136 | private boolean bIsNodeIdset = false;
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| 137 |
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| 138 | private PcepObjectHeader fecObjHeader;
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| 139 | private byte[] nodeID = new byte[IPV6_ADDRESS_LENGTH];
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| 140 |
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| 141 | private boolean bIsPFlagSet = false;
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| 142 | private boolean bPFlag;
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| 143 |
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| 144 | private boolean bIsIFlagSet = false;
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| 145 | private boolean bIFlag;
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| 146 |
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| 147 | @Override
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| 148 | public PcepFecObjectIPv6 build() throws PcepParseException {
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| 149 | PcepObjectHeader fecObjHeader = this.bIsHeaderSet ? this.fecObjHeader : DEFAULT_FEC_OBJECT_HEADER;
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| 150 |
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| 151 | if (!this.bIsNodeIdset) {
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| 152 | throw new PcepParseException(" NodeID not set while building PcepFecObjectIPv6 object.");
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| 153 | }
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| 154 | if (bIsPFlagSet) {
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| 155 | fecObjHeader.setPFlag(bPFlag);
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| 156 | }
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| 157 | if (bIsIFlagSet) {
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| 158 | fecObjHeader.setIFlag(bIFlag);
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| 159 | }
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| 160 | return new PcepFecObjectIPv6Ver1(fecObjHeader, this.nodeID);
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| 161 | }
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| 162 |
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| 163 | @Override
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| 164 | public Builder setPFlag(boolean value) {
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| 165 | this.bPFlag = value;
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| 166 | this.bIsPFlagSet = true;
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| 167 | return this;
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| 168 | }
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| 169 |
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| 170 | @Override
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| 171 | public Builder setIFlag(boolean value) {
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| 172 | this.bIFlag = value;
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| 173 | this.bIsIFlagSet = true;
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| 174 | return this;
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| 175 | }
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| 176 |
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| 177 | @Override
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| 178 | public PcepObjectHeader getFecIpv6ObjHeader() {
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| 179 | return this.fecObjHeader;
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| 180 | }
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| 181 |
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| 182 | @Override
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| 183 | public Builder setFecIpv6ObjHeader(PcepObjectHeader obj) {
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| 184 | this.fecObjHeader = obj;
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| 185 | this.bIsHeaderSet = true;
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| 186 | return this;
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| 187 | }
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| 188 |
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| 189 | @Override
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| 190 | public byte[] getNodeID() {
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| 191 | return this.nodeID;
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| 192 | }
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| 193 |
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| 194 | @Override
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| 195 | public Builder setNodeID(byte[] value) {
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| 196 | this.nodeID = value;
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| 197 | this.bIsNodeIdset = true;
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| 198 | return this;
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| 199 | }
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| 200 |
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| 201 | }
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| 202 |
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| 203 | @Override
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| 204 | public PcepVersion getVersion() {
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| 205 | return PcepVersion.PCEP_1;
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| 206 | }
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| 207 |
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| 208 | @Override
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| 209 | public int getType() {
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| 210 | return FEC_OBJ_TYPE;
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| 211 | }
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| 212 |
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| 213 | @Override
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| 214 | public String toString() {
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| 215 | return MoreObjects.toStringHelper(getClass()).add("fecObjHeader", fecObjHeader).add("NodeID: ", nodeID)
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| 216 | .toString();
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| 217 | }
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| 218 | }
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