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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.util.Objects;
import org.jboss.netty.buffer.ChannelBuffer;
import com.google.common.base.MoreObjects;
/**
* Provides BGPLSIdentifier Tlv which contains opaque value (32 Bit BGPLS-Identifier).
*/
public class BgpLSIdentifierTlv implements BgpValueType {
/* Reference :draft-ietf-idr-ls-distribution-11
* 0 1 2 3
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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type= 513 | Length=4 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| opaque value (32 Bit BGPLS-Identifier) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
public static final short TYPE = 513;
public static final short LENGTH = 4;
private final int bgpLsIdentifier;
/**
* Constructor to initialize bgpLsIdentifier.
*
* @param bgpLsIdentifier BGPLS-Identifier
*/
public BgpLSIdentifierTlv(int bgpLsIdentifier) {
this.bgpLsIdentifier = bgpLsIdentifier;
}
/**
* Returns object of this class with specified bgpLsIdentifier.
*
* @param bgpLsIdentifier BGPLS-Identifier
* @return BGPLS-Identifier
*/
public static BgpLSIdentifierTlv of(final int bgpLsIdentifier) {
return new BgpLSIdentifierTlv(bgpLsIdentifier);
}
/**
* Returns opaque value of BGPLS-Identifier.
*
* @return opaque value of BGPLS-Identifier
*/
public int getBgpLsIdentifier() {
return bgpLsIdentifier;
}
@Override
public int hashCode() {
return Objects.hash(bgpLsIdentifier);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof BgpLSIdentifierTlv) {
BgpLSIdentifierTlv other = (BgpLSIdentifierTlv) obj;
return Objects.equals(bgpLsIdentifier, other.bgpLsIdentifier);
}
return false;
}
@Override
public int write(ChannelBuffer c) {
int iLenStartIndex = c.writerIndex();
c.writeShort(TYPE);
c.writeShort(LENGTH);
c.writeInt(bgpLsIdentifier);
return c.writerIndex() - iLenStartIndex;
}
/**
* Reads the channel buffer and parses BGPLS Identifier TLV.
*
* @param cb ChannelBuffer
* @return object of BGPLSIdentifierTlv
*/
public static BgpLSIdentifierTlv read(ChannelBuffer cb) {
return BgpLSIdentifierTlv.of(cb.readInt());
}
@Override
public short getType() {
return TYPE;
}
@Override
public int compareTo(Object o) {
if (this.equals(o)) {
return 0;
}
return ((Integer) (this.bgpLsIdentifier)).compareTo((Integer) (((BgpLSIdentifierTlv) o).bgpLsIdentifier));
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("Type", TYPE)
.add("Length", LENGTH)
.add("Value", bgpLsIdentifier)
.toString();
}
}
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