bharat saraswal | f7364db | 2015-08-11 13:39:31 +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.types;
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| 18 |
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| 19 | import java.util.Objects;
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| 20 |
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| 21 | import org.jboss.netty.buffer.ChannelBuffer;
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| 22 | import org.onosproject.pcepio.exceptions.PcepParseException;
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| 23 | import org.onosproject.pcepio.protocol.PcepVersion;
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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 | import com.google.common.base.MoreObjects.ToStringHelper;
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| 29 |
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| 30 | /**
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| 31 | * Provides StatefulRsvpErrorSpecTlv.
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| 32 | */
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| 33 | public class StatefulRsvpErrorSpecTlv implements PcepValueType {
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| 34 |
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| 35 | protected static final Logger log = LoggerFactory.getLogger(StatefulRsvpErrorSpecTlv.class);
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| 36 |
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| 37 | /* RSVP-ERROR-SPEC TLV format
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| 38 | * Reference :PCEP Extensions for Stateful PCE draft-ietf-pce-stateful-pce-10
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| 39 | *
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| 40 | *
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| 41 |
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| 42 | 0 1 2 3
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| 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
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| 44 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 45 | | Type=21 | Length (variable) |
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| 46 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 47 | | |
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| 48 | + RSVP ERROR_SPEC or USER_ERROR_SPEC Object +
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| 49 | | |
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| 50 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 51 |
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| 52 | 0 1 2 3
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| 53 | +-------------+-------------+-------------+-------------+
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| 54 | | Length (bytes) | Class-Num | C-Type |
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| 55 | +-------------+-------------+-------------+-------------+
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| 56 | | |
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| 57 | // (Object contents) //
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| 58 | | |
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| 59 | +-------------+-------------+-------------+-------------+
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| 60 |
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| 61 | Ref : ERROR_SPEC @ RFC2205
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| 62 |
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| 63 | IPv4 ERROR_SPEC object: Class = 6, C-Type = 1
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| 64 | +-------------+-------------+-------------+-------------+
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| 65 | | IPv4 Error Node Address (4 bytes) |
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| 66 | +-------------+-------------+-------------+-------------+
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| 67 | | Flags | Error Code | Error Value |
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| 68 | +-------------+-------------+-------------+-------------+
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| 69 |
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| 70 |
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| 71 | IPv6 ERROR_SPEC object: Class = 6, C-Type = 2
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| 72 | +-------------+-------------+-------------+-------------+
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| 73 | | |
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| 74 | + +
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| 75 | | |
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| 76 | + IPv6 Error Node Address (16 bytes) +
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| 77 | | |
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| 78 | + +
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| 79 | | |
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| 80 | +-------------+-------------+-------------+-------------+
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| 81 | | Flags | Error Code | Error Value |
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| 82 | +-------------+-------------+-------------+-------------+
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| 83 |
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| 84 |
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| 85 | Ref : USER_ERROR_SPEC @ RFC5284
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| 86 | USER_ERROR_SPEC object: Class = 194, C-Type = 1
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| 87 | 0 1 2 3
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| 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
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| 89 | +---------------+---------------+---------------+---------------+
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| 90 | | Enterprise Number |
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| 91 | +---------------+---------------+---------------+---------------+
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| 92 | | Sub Org | Err Desc Len | User Error Value |
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| 93 | +---------------+---------------+---------------+---------------+
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| 94 | | |
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| 95 | ~ Error Description ~
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| 96 | | |
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| 97 | +---------------+---------------+---------------+---------------+
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| 98 | | |
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| 99 | ~ User-Defined Subobjects ~
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| 100 | | |
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| 101 | +---------------+---------------+---------------+---------------+
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| 102 |
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| 103 | */
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| 104 |
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| 105 | public static final short TYPE = 21;
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| 106 | public static final int OBJECT_HEADER_LENGTH = 4;
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| 107 | private final short hLength;
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| 108 |
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| 109 | private final PcepRsvpErrorSpec rsvpErrSpecObj;
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| 110 | private final boolean isErrSpceObjSet;
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| 111 |
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| 112 | /**
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| 113 | * Constructor to initialize errSpecObj.
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| 114 | *
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| 115 | * @param rsvpErrSpecObj Rsvp error spec object
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| 116 | * @param hLength length of rsvp error spec object
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| 117 | */
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| 118 | public StatefulRsvpErrorSpecTlv(PcepRsvpErrorSpec rsvpErrSpecObj, short hLength) {
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| 119 | this.rsvpErrSpecObj = rsvpErrSpecObj;
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| 120 | this.isErrSpceObjSet = true;
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| 121 | this.hLength = hLength;
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| 122 | }
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| 123 |
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| 124 | /**
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| 125 | * Returns PcepRsvpErrorSpecObject.
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| 126 | *
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| 127 | * @return rsvpErrSpecObj
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| 128 | */
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| 129 | public PcepRsvpErrorSpec getPcepRsvpErrorSpec() {
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| 130 | return this.rsvpErrSpecObj;
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| 131 | }
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| 132 |
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| 133 | @Override
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| 134 | public PcepVersion getVersion() {
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| 135 | return PcepVersion.PCEP_1;
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| 136 | }
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| 137 |
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| 138 | @Override
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| 139 | public short getType() {
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| 140 | return TYPE;
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| 141 | }
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| 142 |
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| 143 | @Override
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| 144 | public short getLength() {
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| 145 | return hLength;
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| 146 | }
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| 147 |
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| 148 | /**
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| 149 | * Reads channel buffer and returns object of StatefulRsvpErrorSpecTlv.
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| 150 | *
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| 151 | * @param cb of type channel buffer
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| 152 | * @return object of StatefulRsvpErrorSpecTlv
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| 153 | */
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| 154 | public static PcepValueType read(ChannelBuffer cb) throws PcepParseException {
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| 155 |
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| 156 | PcepRsvpErrorSpec rsvpErrSpecObj = null;
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| 157 | PcepRsvpSpecObjHeader rsvpErrSpecObjHeader;
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| 158 |
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| 159 | cb.markReaderIndex();
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| 160 | rsvpErrSpecObjHeader = PcepRsvpSpecObjHeader.read(cb);
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| 161 | cb.resetReaderIndex();
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| 162 |
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| 163 | if (PcepRsvpIpv4ErrorSpec.CLASS_NUM == rsvpErrSpecObjHeader.getObjClassNum()
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| 164 | && PcepRsvpIpv4ErrorSpec.CLASS_TYPE == rsvpErrSpecObjHeader.getObjClassType()) {
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| 165 | rsvpErrSpecObj = PcepRsvpIpv4ErrorSpec.read(cb);
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| 166 | } else if (PcepRsvpIpv6ErrorSpec.CLASS_NUM == rsvpErrSpecObjHeader.getObjClassNum()
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| 167 | && PcepRsvpIpv6ErrorSpec.CLASS_TYPE == rsvpErrSpecObjHeader.getObjClassType()) {
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| 168 | rsvpErrSpecObj = PcepRsvpIpv6ErrorSpec.read(cb);
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| 169 | } else if (PcepRsvpUserErrorSpec.CLASS_NUM == rsvpErrSpecObjHeader.getObjClassNum()
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| 170 | && PcepRsvpUserErrorSpec.CLASS_TYPE == rsvpErrSpecObjHeader.getObjClassType()) {
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| 171 | rsvpErrSpecObj = PcepRsvpUserErrorSpec.read(cb);
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| 172 | }
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| 173 | return rsvpErrSpecObj;
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| 174 | }
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| 175 |
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| 176 | @Override
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| 177 | public int hashCode() {
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| 178 | return Objects.hash(rsvpErrSpecObj.hashCode());
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| 179 | }
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| 180 |
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| 181 | @Override
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| 182 | public boolean equals(Object obj) {
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| 183 | if (this == obj) {
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| 184 | return true;
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| 185 | }
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| 186 | if (obj instanceof StatefulRsvpErrorSpecTlv) {
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| 187 | StatefulRsvpErrorSpecTlv other = (StatefulRsvpErrorSpecTlv) obj;
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| 188 | return Objects.equals(this.rsvpErrSpecObj, other.rsvpErrSpecObj);
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| 189 | }
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| 190 | return false;
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| 191 | }
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| 192 |
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| 193 | @Override
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| 194 | public int write(ChannelBuffer c) {
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| 195 | int iStartIndex = c.writerIndex();
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| 196 | c.writeShort(TYPE);
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| 197 | int tlvLenIndex = c.writerIndex();
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| 198 | c.writeShort(hLength);
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| 199 | if (isErrSpceObjSet) {
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| 200 | rsvpErrSpecObj.write(c);
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| 201 | }
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| 202 | short tlvLen = (short) (c.writerIndex() - iStartIndex + 4);
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| 203 | c.setShort(tlvLenIndex, tlvLen);
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| 204 |
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| 205 | return tlvLen;
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| 206 | }
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| 207 |
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| 208 | @Override
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| 209 | public void print() {
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| 210 |
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| 211 | log.debug("StatefulRsvpErrorSpecTlv");
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| 212 | log.debug("Type: " + TYPE);
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| 213 | log.debug("Length: " + hLength);
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| 214 | if (isErrSpceObjSet) {
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| 215 | rsvpErrSpecObj.print();
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| 216 | }
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| 217 | }
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| 218 |
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| 219 | @Override
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| 220 | public String toString() {
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| 221 | ToStringHelper toStrHelper = MoreObjects.toStringHelper(getClass());
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| 222 |
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| 223 | if (!isErrSpceObjSet) {
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| 224 | toStrHelper
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| 225 | .add("Type", TYPE)
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| 226 | .add("Length", hLength);
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| 227 | } else {
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| 228 | toStrHelper
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| 229 | .add("Type", TYPE)
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| 230 | .add("Length", hLength)
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| 231 | .add("RSVP Error Spec Object", rsvpErrSpecObj);
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| 232 | }
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| 233 | return toStrHelper.toString();
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| 234 | }
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| 235 | }
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