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.PcepFecObjectIPv6Adjacency;
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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 Adjacency 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 PcepFecObjectIPv6AdjacencyVer1 implements PcepFecObjectIPv6Adjacency {
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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 | // Local IPv6 address (16 bytes) //
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| 42 | | |
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| 43 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 44 | | |
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| 45 | // Remote IPv6 address (16 bytes) //
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| 46 | | |
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| 47 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 48 |
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| 49 | FEC Object-Type is 4 IPv6 Adjacency
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| 50 | */
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| 51 | protected static final Logger log = LoggerFactory.getLogger(PcepFecObjectIPv6AdjacencyVer1.class);
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| 52 |
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| 53 | public static final byte FEC_OBJ_TYPE = 4;
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| 54 | public static final byte FEC_OBJ_CLASS = 63; //to be defined
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| 55 | public static final byte FEC_OBJECT_VERSION = 1;
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| 56 | public static final short FEC_OBJ_MINIMUM_LENGTH = 36;
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| 57 | public static final int MINIMUM_COMMON_HEADER_LENGTH = 4;
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| 58 | public static final int IPV6_ADDRESS_LENGTH = 16;
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| 59 |
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| 60 | static final PcepObjectHeader DEFAULT_FEC_OBJECT_HEADER = new PcepObjectHeader(FEC_OBJ_CLASS, FEC_OBJ_TYPE,
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| 61 | PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED, FEC_OBJ_MINIMUM_LENGTH);
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| 62 |
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| 63 | private PcepObjectHeader fecObjHeader;
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| 64 | private byte[] localIPv6Address = new byte[IPV6_ADDRESS_LENGTH];
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| 65 | private byte[] remoteIPv6Address = new byte[IPV6_ADDRESS_LENGTH];
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| 66 |
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| 67 | /**
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| 68 | * Constructor to initialize parameters for PCEP fec object.
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| 69 | *
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| 70 | * @param fecObjHeader fec object header
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| 71 | * @param localIPv6Address local IPv6 address
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| 72 | * @param remoteIPv6Address remote IPv6 address
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| 73 | */
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| 74 | public PcepFecObjectIPv6AdjacencyVer1(PcepObjectHeader fecObjHeader, byte[] localIPv6Address,
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| 75 | byte[] remoteIPv6Address) {
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| 76 | this.fecObjHeader = fecObjHeader;
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| 77 | this.localIPv6Address = localIPv6Address;
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| 78 | this.remoteIPv6Address = remoteIPv6Address;
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| 79 | }
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| 80 |
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| 81 | /**
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| 82 | * Sets Object Header.
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| 83 | *
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| 84 | * @param obj object header
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| 85 | */
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| 86 | public void setFecIpv4ObjHeader(PcepObjectHeader obj) {
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| 87 | this.fecObjHeader = obj;
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| 88 | }
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| 89 |
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| 90 | @Override
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| 91 | public byte[] getLocalIPv6Address() {
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| 92 | return this.localIPv6Address;
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| 93 | }
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| 94 |
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| 95 | @Override
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| 96 | public void seLocalIPv6Address(byte[] value) {
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| 97 | this.localIPv6Address = value;
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| 98 | }
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| 99 |
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| 100 | @Override
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| 101 | public byte[] getRemoteIPv6Address() {
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| 102 | return this.remoteIPv6Address;
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| 103 | }
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| 104 |
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| 105 | @Override
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| 106 | public void seRemoteIPv6Address(byte[] value) {
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| 107 | this.remoteIPv6Address = value;
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| 108 | }
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| 109 |
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| 110 | /**
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| 111 | * Reads channel buffer and Returns object of PcepFecObjectIPv6Adjacency.
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| 112 | *
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| 113 | * @param cb of channel buffer
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| 114 | * @return object of PcepFecObjectIPv6Adjacency
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| 115 | * @throws PcepParseException when fails tp read from channel buffer
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| 116 | */
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| 117 | public static PcepFecObjectIPv6Adjacency read(ChannelBuffer cb) throws PcepParseException {
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| 118 |
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| 119 | PcepObjectHeader fecObjHeader;
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| 120 | byte[] localIPv6Address = new byte[IPV6_ADDRESS_LENGTH];
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| 121 | byte[] remoteIPv6Address = new byte[IPV6_ADDRESS_LENGTH];
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| 122 | fecObjHeader = PcepObjectHeader.read(cb);
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| 123 | cb.readBytes(localIPv6Address, 0, IPV6_ADDRESS_LENGTH);
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| 124 | cb.readBytes(remoteIPv6Address, 0, IPV6_ADDRESS_LENGTH);
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| 125 | return new PcepFecObjectIPv6AdjacencyVer1(fecObjHeader, localIPv6Address, remoteIPv6Address);
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| 126 | }
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| 127 |
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| 128 | @Override
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| 129 | public int write(ChannelBuffer cb) throws PcepParseException {
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| 130 |
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| 131 | int objStartIndex = cb.writerIndex();
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| 132 |
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| 133 | //write common header
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| 134 | int objLenIndex = fecObjHeader.write(cb);
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| 135 | cb.writeBytes(localIPv6Address);
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| 136 | cb.writeBytes(remoteIPv6Address);
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| 137 | //now write FEC IPv6 Adjacency Object Length
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| 138 | cb.setShort(objLenIndex, (short) (cb.writerIndex() - objStartIndex));
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| 139 | return cb.writerIndex();
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| 140 | }
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| 141 |
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| 142 | /**
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| 143 | * Builder class for PCEP fec object IPv6 Adjacency.
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| 144 | */
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| 145 | public static class Builder implements PcepFecObjectIPv6Adjacency.Builder {
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| 146 | private boolean bIsHeaderSet = false;
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| 147 | private boolean bIsLocalIPv6Addressset = false;
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| 148 | private boolean bIsRemoteIPv6Addressset = false;
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| 149 |
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| 150 | private PcepObjectHeader fecObjHeader;
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| 151 | byte[] localIPv6Address = new byte[IPV6_ADDRESS_LENGTH];
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| 152 | byte[] remoteIPv6Address = new byte[IPV6_ADDRESS_LENGTH];
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| 153 |
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| 154 | private boolean bIsPFlagSet = false;
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| 155 | private boolean bPFlag;
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| 156 |
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| 157 | private boolean bIsIFlagSet = false;
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| 158 | private boolean bIFlag;
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| 159 |
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| 160 | @Override
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| 161 | public PcepFecObjectIPv6Adjacency build() throws PcepParseException {
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| 162 | PcepObjectHeader fecObjHeader = this.bIsHeaderSet ? this.fecObjHeader : DEFAULT_FEC_OBJECT_HEADER;
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| 163 |
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| 164 | if (!this.bIsLocalIPv6Addressset) {
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| 165 | throw new PcepParseException(
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| 166 | "Local IPv6 Address not set while building PcepFecObjectIPv6Adjacency object.");
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| 167 | }
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| 168 | if (!this.bIsRemoteIPv6Addressset) {
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| 169 | throw new PcepParseException(
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| 170 | "Remote IPv6 Address not set while building PcepFecObjectIPv6Adjacency object.");
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| 171 | }
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| 172 | if (bIsPFlagSet) {
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| 173 | fecObjHeader.setPFlag(bPFlag);
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| 174 | }
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| 175 | if (bIsIFlagSet) {
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| 176 | fecObjHeader.setIFlag(bIFlag);
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| 177 | }
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| 178 | return new PcepFecObjectIPv6AdjacencyVer1(fecObjHeader, this.localIPv6Address, this.remoteIPv6Address);
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| 179 | }
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| 180 |
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| 181 | @Override
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| 182 | public Builder setPFlag(boolean value) {
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| 183 | this.bPFlag = value;
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| 184 | this.bIsPFlagSet = true;
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| 185 | return this;
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| 186 | }
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| 187 |
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| 188 | @Override
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| 189 | public Builder setIFlag(boolean value) {
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| 190 | this.bIFlag = value;
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| 191 | this.bIsIFlagSet = true;
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| 192 | return this;
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| 193 | }
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| 194 |
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| 195 | @Override
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| 196 | public PcepObjectHeader getFecIpv6AdjacencyObjHeader() {
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| 197 | return this.fecObjHeader;
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| 198 | }
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| 199 |
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| 200 | @Override
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| 201 | public Builder setFecIpv6AdjacencyObjHeader(PcepObjectHeader obj) {
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| 202 | this.fecObjHeader = obj;
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| 203 | this.bIsHeaderSet = true;
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| 204 | return this;
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| 205 | }
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| 206 |
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| 207 | @Override
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| 208 | public byte[] getLocalIPv6Address() {
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| 209 | return this.localIPv6Address;
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| 210 | }
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| 211 |
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| 212 | @Override
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| 213 | public Builder setLocalIPv6Address(byte[] value) {
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| 214 | this.localIPv6Address = value;
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| 215 | this.bIsLocalIPv6Addressset = true;
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| 216 | return this;
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| 217 | }
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| 218 |
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| 219 | @Override
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| 220 | public byte[] getRemoteIPv6Address() {
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| 221 | return this.remoteIPv6Address;
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| 222 | }
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| 223 |
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| 224 | @Override
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| 225 | public Builder setRemoteIPv6Address(byte[] value) {
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| 226 | this.remoteIPv6Address = value;
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| 227 | this.bIsRemoteIPv6Addressset = true;
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| 228 | return this;
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| 229 | }
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| 230 | }
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| 231 |
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| 232 | @Override
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| 233 | public PcepVersion getVersion() {
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| 234 | return PcepVersion.PCEP_1;
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| 235 | }
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| 236 |
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| 237 | @Override
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| 238 | public int getType() {
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| 239 | return FEC_OBJ_TYPE;
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| 240 | }
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| 241 |
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| 242 | @Override
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| 243 | public String toString() {
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| 244 | return MoreObjects.toStringHelper(getClass()).add("localIPv6Address", localIPv6Address)
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| 245 | .add("remoteIPv6Address: ", remoteIPv6Address).toString();
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| 246 | }
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| 247 | }
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