| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * 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; |
| |
| import java.net.InetAddress; |
| import java.util.Objects; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.onlab.packet.Ip4Address; |
| import org.onosproject.bgpio.exceptions.BgpParseException; |
| import org.onosproject.bgpio.util.Validation; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * Provides Implementation of IPv4AddressTlv. |
| */ |
| public class IPv4AddressTlv implements BgpValueType { |
| private static final int LENGTH = 4; |
| |
| private Ip4Address address; |
| private short type; |
| |
| /** |
| * Constructor to initialize parameters. |
| * |
| * @param address Ipv4 address of interface/neighbor |
| * @param type address type |
| */ |
| public IPv4AddressTlv(Ip4Address address, short type) { |
| this.address = Preconditions.checkNotNull(address); |
| this.type = type; |
| } |
| |
| /** |
| * Returns Ipv4 address of interface/neighbor. |
| * |
| * @return Ipv4 address of interface/neighbor |
| */ |
| public Ip4Address address() { |
| return address; |
| } |
| |
| @Override |
| public short getType() { |
| return this.type; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(address); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof IPv4AddressTlv) { |
| IPv4AddressTlv other = (IPv4AddressTlv) obj; |
| return Objects.equals(this.address, other.address) && Objects.equals(this.type, other.type); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer cb) { |
| int iLenStartIndex = cb.writerIndex(); |
| cb.writeShort(type); |
| cb.writeShort(LENGTH); |
| cb.writeInt(address.toInt()); |
| return cb.writerIndex() - iLenStartIndex; |
| } |
| |
| /** |
| * Reads the channel buffer and returns object of IPv4AddressTlv. |
| * |
| * @param cb channelBuffer |
| * @param type address type |
| * @return object of IPv4AddressTlv |
| * @throws BgpParseException while parsing IPv4AddressTlv |
| */ |
| public static IPv4AddressTlv read(ChannelBuffer cb, short type) throws BgpParseException { |
| InetAddress ipAddress = Validation.toInetAddress(LENGTH, cb); |
| if (ipAddress.isMulticastAddress()) { |
| throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, (byte) 0, null); |
| } |
| Ip4Address address = Ip4Address.valueOf(ipAddress); |
| return IPv4AddressTlv.of(address, type); |
| } |
| |
| /** |
| * Returns object of this class with specified values. |
| * |
| * @param address Ipv4 interface/neighbor Address |
| * @param type says Ipv4 address of interface/neighbor tlv type |
| * @return object of this class |
| */ |
| public static IPv4AddressTlv of(final Ip4Address address , final short type) { |
| return new IPv4AddressTlv(address, type); |
| } |
| |
| @Override |
| public int compareTo(Object o) { |
| if (this.equals(o)) { |
| return 0; |
| } |
| return ((Ip4Address) (this.address)).compareTo((Ip4Address) (((IPv4AddressTlv) o).address)); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("type", type) |
| .add("LENGTH", LENGTH) |
| .add("address", address) |
| .toString(); |
| } |
| } |