| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.bgpio.types.attr; |
| |
| import java.util.Objects; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.onlab.packet.Ip4Address; |
| import org.onlab.packet.Ip6Address; |
| import org.onosproject.bgpio.exceptions.BgpParseException; |
| import org.onosproject.bgpio.types.BgpErrorType; |
| import org.onosproject.bgpio.types.BgpValueType; |
| import org.onosproject.bgpio.util.Validation; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Implements BGP prefix OSPF Forwarding address attribute. |
| */ |
| public class BgpPrefixAttrOspfFwdAddr implements BgpValueType { |
| |
| private static final Logger log = LoggerFactory |
| .getLogger(BgpPrefixAttrOspfFwdAddr.class); |
| |
| public static final int ATTR_PREFIX_OSPFFWDADDR = 1156; |
| public static final int IPV4_LEN = 4; |
| public static final int IPV6_LEN = 16; |
| |
| /* OSPF Forwarding Address */ |
| private final short lsAttrLength; |
| private final Ip4Address ip4RouterId; |
| private final Ip6Address ip6RouterId; |
| |
| /** |
| * Constructor to initialize the value. |
| * |
| * @param lsAttrLength length of the IP address |
| * @param ip4RouterId Valid IPV4 address if length is 4 else null |
| * @param ip6RouterId Valid IPV6 address if length is 16 else null |
| */ |
| public BgpPrefixAttrOspfFwdAddr(short lsAttrLength, Ip4Address ip4RouterId, |
| Ip6Address ip6RouterId) { |
| this.lsAttrLength = lsAttrLength; |
| this.ip4RouterId = ip4RouterId; |
| this.ip6RouterId = ip6RouterId; |
| } |
| |
| /** |
| * Returns object of this class with specified values. |
| * |
| * @param lsAttrLength length of the IP address |
| * @param ip4RouterId Valid IPV4 address if length is 4 else null |
| * @param ip6RouterId Valid IPV6 address if length is 16 else null |
| * @return object of BgpPrefixAttrOspfFwdAddr |
| */ |
| public static BgpPrefixAttrOspfFwdAddr of(final short lsAttrLength, |
| final Ip4Address ip4RouterId, |
| final Ip6Address ip6RouterId) { |
| return new BgpPrefixAttrOspfFwdAddr(lsAttrLength, ip4RouterId, |
| ip6RouterId); |
| } |
| |
| /** |
| * Reads the OSPF Forwarding Address. |
| * |
| * @param cb ChannelBuffer |
| * @return object of BgpPrefixAttrOSPFFwdAddr |
| * @throws BgpParseException while parsing BgpPrefixAttrOspfFwdAddr |
| */ |
| public static BgpPrefixAttrOspfFwdAddr read(ChannelBuffer cb) |
| throws BgpParseException { |
| short lsAttrLength; |
| byte[] ipBytes; |
| Ip4Address ip4RouterId = null; |
| Ip6Address ip6RouterId = null; |
| |
| lsAttrLength = cb.readShort(); |
| ipBytes = new byte[lsAttrLength]; |
| |
| if ((cb.readableBytes() < lsAttrLength)) { |
| Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| lsAttrLength); |
| } |
| |
| cb.readBytes(ipBytes); |
| |
| if (IPV4_LEN == lsAttrLength) { |
| ip4RouterId = Ip4Address.valueOf(ipBytes); |
| } else if (IPV6_LEN == lsAttrLength) { |
| ip6RouterId = Ip6Address.valueOf(ipBytes); |
| } |
| |
| return BgpPrefixAttrOspfFwdAddr.of(lsAttrLength, ip4RouterId, |
| ip6RouterId); |
| } |
| |
| /** |
| * Returns IPV4 Address of OSPF forwarding address. |
| * |
| * @return IPV4 address |
| */ |
| public Ip4Address ospfv4FwdAddr() { |
| return ip4RouterId; |
| } |
| |
| /** |
| * Returns IPV6 Address of OSPF forwarding address. |
| * |
| * @return IPV6 address |
| */ |
| public Ip6Address ospfv6FwdAddr() { |
| return ip6RouterId; |
| } |
| |
| /** |
| * Returns OSPF forwarding address length. |
| * |
| * @return length of the ip address |
| */ |
| public short ospfFwdAddrLen() { |
| return lsAttrLength; |
| } |
| |
| @Override |
| public short getType() { |
| return ATTR_PREFIX_OSPFFWDADDR; |
| } |
| |
| @Override |
| public int hashCode() { |
| if (IPV4_LEN == lsAttrLength) { |
| return Objects.hash(ip4RouterId); |
| } else { |
| return Objects.hash(ip6RouterId); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj instanceof BgpPrefixAttrOspfFwdAddr) { |
| BgpPrefixAttrOspfFwdAddr other = (BgpPrefixAttrOspfFwdAddr) obj; |
| if (IPV4_LEN == lsAttrLength) { |
| return Objects.equals(ip4RouterId, other.ip4RouterId); |
| } else { |
| return Objects.equals(ip6RouterId, other.ip6RouterId); |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer cb) { |
| // TODO This will be implemented in the next version |
| return 0; |
| } |
| |
| @Override |
| public String toString() { |
| if (IPV4_LEN == lsAttrLength) { |
| return MoreObjects.toStringHelper(getClass()).omitNullValues() |
| .add("ip4RouterId", ip4RouterId).toString(); |
| } else { |
| return MoreObjects.toStringHelper(getClass()).omitNullValues() |
| .add("ip6RouterId", ip6RouterId).toString(); |
| } |
| } |
| |
| @Override |
| public int compareTo(Object o) { |
| // TODO Auto-generated method stub |
| return 0; |
| } |
| } |