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/*
* 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();
}
}
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