Sho SHIMIZU | e81e4db | 2015-09-03 09:44:38 -0700 | [diff] [blame^] | 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 | |
| 17 | package org.onosproject.pcepio.types; |
| 18 | |
| 19 | import java.util.Objects; |
| 20 | |
| 21 | import org.jboss.netty.buffer.ChannelBuffer; |
| 22 | import org.onosproject.pcepio.exceptions.PcepParseException; |
| 23 | import org.onosproject.pcepio.protocol.PcepVersion; |
| 24 | import org.slf4j.Logger; |
| 25 | import org.slf4j.LoggerFactory; |
| 26 | |
| 27 | import com.google.common.base.MoreObjects; |
| 28 | import com.google.common.base.MoreObjects.ToStringHelper; |
| 29 | |
| 30 | /** |
| 31 | * Provides StatefulRsvpErrorSpecTlv. |
| 32 | */ |
| 33 | public class StatefulRsvpErrorSpecTlv implements PcepValueType { |
| 34 | |
| 35 | protected static final Logger log = LoggerFactory.getLogger(StatefulRsvpErrorSpecTlv.class); |
| 36 | |
| 37 | /* RSVP-ERROR-SPEC TLV format |
| 38 | * Reference :PCEP Extensions for Stateful PCE draft-ietf-pce-stateful-pce-10 |
| 39 | * |
| 40 | * |
| 41 | |
| 42 | 0 1 2 3 |
| 43 | 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 |
| 44 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 45 | | Type=21 | Length (variable) | |
| 46 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 47 | | | |
| 48 | + RSVP ERROR_SPEC or USER_ERROR_SPEC Object + |
| 49 | | | |
| 50 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 51 | |
| 52 | 0 1 2 3 |
| 53 | +-------------+-------------+-------------+-------------+ |
| 54 | | Length (bytes) | Class-Num | C-Type | |
| 55 | +-------------+-------------+-------------+-------------+ |
| 56 | | | |
| 57 | // (Object contents) // |
| 58 | | | |
| 59 | +-------------+-------------+-------------+-------------+ |
| 60 | |
| 61 | Ref : ERROR_SPEC @ RFC2205 |
| 62 | |
| 63 | IPv4 ERROR_SPEC object: Class = 6, C-Type = 1 |
| 64 | +-------------+-------------+-------------+-------------+ |
| 65 | | IPv4 Error Node Address (4 bytes) | |
| 66 | +-------------+-------------+-------------+-------------+ |
| 67 | | Flags | Error Code | Error Value | |
| 68 | +-------------+-------------+-------------+-------------+ |
| 69 | |
| 70 | |
| 71 | IPv6 ERROR_SPEC object: Class = 6, C-Type = 2 |
| 72 | +-------------+-------------+-------------+-------------+ |
| 73 | | | |
| 74 | + + |
| 75 | | | |
| 76 | + IPv6 Error Node Address (16 bytes) + |
| 77 | | | |
| 78 | + + |
| 79 | | | |
| 80 | +-------------+-------------+-------------+-------------+ |
| 81 | | Flags | Error Code | Error Value | |
| 82 | +-------------+-------------+-------------+-------------+ |
| 83 | |
| 84 | |
| 85 | Ref : USER_ERROR_SPEC @ RFC5284 |
| 86 | USER_ERROR_SPEC object: Class = 194, C-Type = 1 |
| 87 | 0 1 2 3 |
| 88 | 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 |
| 89 | +---------------+---------------+---------------+---------------+ |
| 90 | | Enterprise Number | |
| 91 | +---------------+---------------+---------------+---------------+ |
| 92 | | Sub Org | Err Desc Len | User Error Value | |
| 93 | +---------------+---------------+---------------+---------------+ |
| 94 | | | |
| 95 | ~ Error Description ~ |
| 96 | | | |
| 97 | +---------------+---------------+---------------+---------------+ |
| 98 | | | |
| 99 | ~ User-Defined Subobjects ~ |
| 100 | | | |
| 101 | +---------------+---------------+---------------+---------------+ |
| 102 | |
| 103 | */ |
| 104 | |
| 105 | public static final short TYPE = 21; |
| 106 | public static final int OBJECT_HEADER_LENGTH = 4; |
| 107 | private short hLength; |
| 108 | |
| 109 | private final PcepRsvpErrorSpec rsvpErrSpecObj; |
| 110 | private final boolean isErrSpceObjSet; |
| 111 | |
| 112 | /** |
| 113 | * Constructor to initialize errSpecObj. |
| 114 | * |
| 115 | * @param rsvpErrSpecObj Rsvp error spec object |
| 116 | */ |
| 117 | public StatefulRsvpErrorSpecTlv(PcepRsvpErrorSpec rsvpErrSpecObj) { |
| 118 | this.rsvpErrSpecObj = rsvpErrSpecObj; |
| 119 | this.isErrSpceObjSet = true; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Returns PcepRsvpErrorSpecObject. |
| 124 | * |
| 125 | * @return rsvpErrSpecObj |
| 126 | */ |
| 127 | public PcepRsvpErrorSpec getPcepRsvpErrorSpec() { |
| 128 | return this.rsvpErrSpecObj; |
| 129 | } |
| 130 | |
| 131 | @Override |
| 132 | public PcepVersion getVersion() { |
| 133 | return PcepVersion.PCEP_1; |
| 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public short getType() { |
| 138 | return TYPE; |
| 139 | } |
| 140 | |
| 141 | @Override |
| 142 | public short getLength() { |
| 143 | return hLength; |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Reads channel buffer and returns object of StatefulRsvpErrorSpecTlv. |
| 148 | * |
| 149 | * @param cb of type channel buffer |
| 150 | * @return object of StatefulRsvpErrorSpecTlv |
| 151 | * @throws PcepParseException while parsing this tlv from channel buffer |
| 152 | */ |
| 153 | public static PcepValueType read(ChannelBuffer cb) throws PcepParseException { |
| 154 | |
| 155 | PcepRsvpErrorSpec rsvpErrSpecObj = null; |
| 156 | PcepRsvpSpecObjHeader rsvpErrSpecObjHeader; |
| 157 | |
| 158 | cb.markReaderIndex(); |
| 159 | rsvpErrSpecObjHeader = PcepRsvpSpecObjHeader.read(cb); |
| 160 | cb.resetReaderIndex(); |
| 161 | |
| 162 | if (PcepRsvpIpv4ErrorSpec.CLASS_NUM == rsvpErrSpecObjHeader.getObjClassNum() |
| 163 | && PcepRsvpIpv4ErrorSpec.CLASS_TYPE == rsvpErrSpecObjHeader.getObjClassType()) { |
| 164 | rsvpErrSpecObj = PcepRsvpIpv4ErrorSpec.read(cb); |
| 165 | } else if (PcepRsvpIpv6ErrorSpec.CLASS_NUM == rsvpErrSpecObjHeader.getObjClassNum() |
| 166 | && PcepRsvpIpv6ErrorSpec.CLASS_TYPE == rsvpErrSpecObjHeader.getObjClassType()) { |
| 167 | rsvpErrSpecObj = PcepRsvpIpv6ErrorSpec.read(cb); |
| 168 | } else if (PcepRsvpUserErrorSpec.CLASS_NUM == rsvpErrSpecObjHeader.getObjClassNum() |
| 169 | && PcepRsvpUserErrorSpec.CLASS_TYPE == rsvpErrSpecObjHeader.getObjClassType()) { |
| 170 | rsvpErrSpecObj = PcepRsvpUserErrorSpec.read(cb); |
| 171 | } |
| 172 | return new StatefulRsvpErrorSpecTlv(rsvpErrSpecObj); |
| 173 | } |
| 174 | |
| 175 | @Override |
| 176 | public int hashCode() { |
| 177 | return Objects.hash(rsvpErrSpecObj.hashCode()); |
| 178 | } |
| 179 | |
| 180 | @Override |
| 181 | public boolean equals(Object obj) { |
| 182 | if (this == obj) { |
| 183 | return true; |
| 184 | } |
| 185 | if (obj instanceof StatefulRsvpErrorSpecTlv) { |
| 186 | StatefulRsvpErrorSpecTlv other = (StatefulRsvpErrorSpecTlv) obj; |
| 187 | return Objects.equals(this.rsvpErrSpecObj, other.rsvpErrSpecObj); |
| 188 | } |
| 189 | return false; |
| 190 | } |
| 191 | |
| 192 | @Override |
| 193 | public int write(ChannelBuffer c) { |
| 194 | int iStartIndex = c.writerIndex(); |
| 195 | c.writeShort(TYPE); |
| 196 | int tlvLenIndex = c.writerIndex(); |
| 197 | hLength = 0; |
| 198 | c.writeShort(hLength); |
| 199 | if (isErrSpceObjSet) { |
| 200 | rsvpErrSpecObj.write(c); |
| 201 | } |
| 202 | hLength = (short) (c.writerIndex() - iStartIndex); |
| 203 | c.setShort(tlvLenIndex, (hLength - OBJECT_HEADER_LENGTH)); |
| 204 | |
| 205 | return c.writerIndex() - iStartIndex; |
| 206 | } |
| 207 | |
| 208 | @Override |
| 209 | public String toString() { |
| 210 | ToStringHelper toStrHelper = MoreObjects.toStringHelper(getClass()); |
| 211 | |
| 212 | if (!isErrSpceObjSet) { |
| 213 | toStrHelper.add("Type", TYPE).add("Length", hLength); |
| 214 | } else { |
| 215 | toStrHelper.add("Type", TYPE).add("Length", hLength).add("RSVPErrorSpecObject", rsvpErrSpecObj); |
| 216 | } |
| 217 | return toStrHelper.toString(); |
| 218 | } |
| 219 | } |