Thejaswi N K | eeb18ee | 2015-10-15 14:16:28 +0530 | [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 | package org.onosproject.bgpio.types.attr; |
| 17 | |
| 18 | import java.util.Objects; |
| 19 | |
| 20 | import org.jboss.netty.buffer.ChannelBuffer; |
| 21 | import org.onlab.packet.Ip4Address; |
| 22 | import org.onlab.packet.Ip6Address; |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 23 | import org.onosproject.bgpio.exceptions.BgpParseException; |
| 24 | import org.onosproject.bgpio.types.BgpErrorType; |
| 25 | import org.onosproject.bgpio.types.BgpValueType; |
Thejaswi N K | eeb18ee | 2015-10-15 14:16:28 +0530 | [diff] [blame] | 26 | import org.onosproject.bgpio.util.Validation; |
| 27 | import org.slf4j.Logger; |
| 28 | import org.slf4j.LoggerFactory; |
| 29 | |
| 30 | import com.google.common.base.MoreObjects; |
| 31 | |
| 32 | /** |
| 33 | * Implements BGP prefix OSPF Forwarding address attribute. |
| 34 | */ |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 35 | public class BgpPrefixAttrOspfFwdAddr implements BgpValueType { |
Thejaswi N K | eeb18ee | 2015-10-15 14:16:28 +0530 | [diff] [blame] | 36 | |
| 37 | protected static final Logger log = LoggerFactory |
| 38 | .getLogger(BgpPrefixAttrOspfFwdAddr.class); |
| 39 | |
| 40 | public static final int ATTR_PREFIX_OSPFFWDADDR = 1156; |
| 41 | public static final int IPV4_LEN = 4; |
| 42 | public static final int IPV6_LEN = 16; |
| 43 | |
| 44 | /* OSPF Forwarding Address */ |
| 45 | private final short lsAttrLength; |
| 46 | private final Ip4Address ip4RouterId; |
| 47 | private final Ip6Address ip6RouterId; |
| 48 | |
| 49 | /** |
| 50 | * Constructor to initialize the value. |
| 51 | * |
| 52 | * @param lsAttrLength length of the IP address |
| 53 | * @param ip4RouterId Valid IPV4 address if length is 4 else null |
| 54 | * @param ip6RouterId Valid IPV6 address if length is 16 else null |
| 55 | */ |
| 56 | public BgpPrefixAttrOspfFwdAddr(short lsAttrLength, Ip4Address ip4RouterId, |
| 57 | Ip6Address ip6RouterId) { |
| 58 | this.lsAttrLength = lsAttrLength; |
| 59 | this.ip4RouterId = ip4RouterId; |
| 60 | this.ip6RouterId = ip6RouterId; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Returns object of this class with specified values. |
| 65 | * |
| 66 | * @param lsAttrLength length of the IP address |
| 67 | * @param ip4RouterId Valid IPV4 address if length is 4 else null |
| 68 | * @param ip6RouterId Valid IPV6 address if length is 16 else null |
| 69 | * @return object of BgpPrefixAttrOspfFwdAddr |
| 70 | */ |
| 71 | public static BgpPrefixAttrOspfFwdAddr of(final short lsAttrLength, |
| 72 | final Ip4Address ip4RouterId, |
| 73 | final Ip6Address ip6RouterId) { |
| 74 | return new BgpPrefixAttrOspfFwdAddr(lsAttrLength, ip4RouterId, |
| 75 | ip6RouterId); |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Reads the OSPF Forwarding Address. |
| 80 | * |
| 81 | * @param cb ChannelBuffer |
| 82 | * @return object of BgpPrefixAttrOSPFFwdAddr |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 83 | * @throws BgpParseException while parsing BgpPrefixAttrOspfFwdAddr |
Thejaswi N K | eeb18ee | 2015-10-15 14:16:28 +0530 | [diff] [blame] | 84 | */ |
| 85 | public static BgpPrefixAttrOspfFwdAddr read(ChannelBuffer cb) |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 86 | throws BgpParseException { |
Thejaswi N K | eeb18ee | 2015-10-15 14:16:28 +0530 | [diff] [blame] | 87 | short lsAttrLength; |
| 88 | byte[] ipBytes; |
| 89 | Ip4Address ip4RouterId = null; |
| 90 | Ip6Address ip6RouterId = null; |
| 91 | |
| 92 | lsAttrLength = cb.readShort(); |
| 93 | ipBytes = new byte[lsAttrLength]; |
| 94 | |
| 95 | if ((cb.readableBytes() < lsAttrLength)) { |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 96 | Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| 97 | BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
Thejaswi N K | eeb18ee | 2015-10-15 14:16:28 +0530 | [diff] [blame] | 98 | lsAttrLength); |
| 99 | } |
| 100 | |
| 101 | cb.readBytes(ipBytes); |
| 102 | |
| 103 | if (IPV4_LEN == lsAttrLength) { |
| 104 | ip4RouterId = Ip4Address.valueOf(ipBytes); |
| 105 | } else if (IPV6_LEN == lsAttrLength) { |
| 106 | ip6RouterId = Ip6Address.valueOf(ipBytes); |
| 107 | } |
| 108 | |
| 109 | return BgpPrefixAttrOspfFwdAddr.of(lsAttrLength, ip4RouterId, |
| 110 | ip6RouterId); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Returns IPV4 Address of OSPF forwarding address. |
| 115 | * |
| 116 | * @return IPV4 address |
| 117 | */ |
| 118 | public Ip4Address ospfv4FwdAddr() { |
| 119 | return ip4RouterId; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Returns IPV6 Address of OSPF forwarding address. |
| 124 | * |
| 125 | * @return IPV6 address |
| 126 | */ |
| 127 | public Ip6Address ospfv6FwdAddr() { |
| 128 | return ip6RouterId; |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Returns OSPF forwarding address length. |
| 133 | * |
| 134 | * @return length of the ip address |
| 135 | */ |
| 136 | public short ospfFwdAddrLen() { |
| 137 | return lsAttrLength; |
| 138 | } |
| 139 | |
| 140 | @Override |
| 141 | public short getType() { |
| 142 | return ATTR_PREFIX_OSPFFWDADDR; |
| 143 | } |
| 144 | |
| 145 | @Override |
| 146 | public int hashCode() { |
| 147 | if (IPV4_LEN == lsAttrLength) { |
| 148 | return Objects.hash(ip4RouterId); |
| 149 | } else { |
| 150 | return Objects.hash(ip6RouterId); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | @Override |
| 155 | public boolean equals(Object obj) { |
| 156 | if (this == obj) { |
| 157 | return true; |
| 158 | } |
| 159 | |
| 160 | if (obj instanceof BgpPrefixAttrOspfFwdAddr) { |
| 161 | BgpPrefixAttrOspfFwdAddr other = (BgpPrefixAttrOspfFwdAddr) obj; |
| 162 | if (IPV4_LEN == lsAttrLength) { |
| 163 | return Objects.equals(ip4RouterId, other.ip4RouterId); |
| 164 | } else { |
| 165 | return Objects.equals(ip6RouterId, other.ip6RouterId); |
| 166 | } |
| 167 | } |
| 168 | return false; |
| 169 | } |
| 170 | |
| 171 | @Override |
| 172 | public int write(ChannelBuffer cb) { |
| 173 | // TODO This will be implemented in the next version |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | @Override |
| 178 | public String toString() { |
| 179 | if (IPV4_LEN == lsAttrLength) { |
| 180 | return MoreObjects.toStringHelper(getClass()).omitNullValues() |
| 181 | .add("ip4RouterId", ip4RouterId).toString(); |
| 182 | } else { |
| 183 | return MoreObjects.toStringHelper(getClass()).omitNullValues() |
| 184 | .add("ip6RouterId", ip6RouterId).toString(); |
| 185 | } |
| 186 | } |
Priyanka B | 0204073 | 2015-11-29 11:30:29 +0530 | [diff] [blame] | 187 | |
| 188 | @Override |
| 189 | public int compareTo(Object o) { |
| 190 | // TODO Auto-generated method stub |
| 191 | return 0; |
| 192 | } |
Thejaswi N K | eeb18ee | 2015-10-15 14:16:28 +0530 | [diff] [blame] | 193 | } |