/* | |
* 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 org.slf4j.Logger; | |
import org.slf4j.LoggerFactory; | |
import com.google.common.base.MoreObjects; | |
/** | |
* Provides MultiProtocolExtnCapabilityTlv. | |
*/ | |
public class MultiProtocolExtnCapabilityTlv implements BgpValueType { | |
/* | |
0 7 15 23 31 | |
+-------+-------+-------+-------+ | |
| AFI | Res | SAFI | | |
+-------+-------+-------+-------+ | |
Multiprotocol Extensions CAPABILITY TLV format | |
REFERENCE : RFC 4760 | |
*/ | |
protected static final Logger log = LoggerFactory | |
.getLogger(MultiProtocolExtnCapabilityTlv.class); | |
public static final byte TYPE = 1; | |
public static final byte LENGTH = 4; | |
private final short afi; | |
private final byte res; | |
private final byte safi; | |
/** | |
* Constructor to initialize variables. | |
* @param afi Address Family Identifiers | |
* @param res reserved field | |
* @param safi Subsequent Address Family Identifier | |
*/ | |
public MultiProtocolExtnCapabilityTlv(short afi, byte res, byte safi) { | |
this.afi = afi; | |
this.res = res; | |
this.safi = safi; | |
} | |
/** | |
* Returns object of MultiProtocolExtnCapabilityTlv. | |
* @param afi Address Family Identifiers | |
* @param res reserved field | |
* @param safi Subsequent Address Family Identifier | |
* @return object of MultiProtocolExtnCapabilityTlv | |
*/ | |
public static MultiProtocolExtnCapabilityTlv of(short afi, byte res, | |
byte safi) { | |
return new MultiProtocolExtnCapabilityTlv(afi, res, safi); | |
} | |
/** | |
* Returns afi Address Family Identifiers value. | |
* @return afi Address Family Identifiers value | |
*/ | |
public short getAFI() { | |
return afi; | |
} | |
/** | |
* Returns res reserved field value. | |
* @return res reserved field value | |
*/ | |
public byte getRes() { | |
return res; | |
} | |
/** | |
* Returns safi Subsequent Address Family Identifier value. | |
* @return safi Subsequent Address Family Identifier value | |
*/ | |
public byte getSAFI() { | |
return safi; | |
} | |
@Override | |
public short getType() { | |
return TYPE; | |
} | |
@Override | |
public int hashCode() { | |
return Objects.hash(afi, res, safi); | |
} | |
@Override | |
public boolean equals(Object obj) { | |
if (this == obj) { | |
return true; | |
} | |
if (obj instanceof MultiProtocolExtnCapabilityTlv) { | |
MultiProtocolExtnCapabilityTlv other = (MultiProtocolExtnCapabilityTlv) obj; | |
return Objects.equals(this.afi, other.afi) | |
&& Objects.equals(this.res, other.res) | |
&& Objects.equals(this.safi, other.safi); | |
} | |
return false; | |
} | |
@Override | |
public int write(ChannelBuffer cb) { | |
int iLenStartIndex = cb.writerIndex(); | |
cb.writeByte(TYPE); | |
cb.writeByte(LENGTH); | |
// write afi | |
cb.writeShort(afi); | |
// write res | |
cb.writeByte(res); | |
// write safi | |
cb.writeByte(safi); | |
return cb.writerIndex() - iLenStartIndex; | |
} | |
/** | |
* Reads from channel buffer and returns object of MultiprotocolCapabilityTlv. | |
* @param cb of type channel buffer | |
* @return object of MultiProtocolExtnCapabilityTlv | |
*/ | |
public static BgpValueType read(ChannelBuffer cb) { | |
short afi = cb.readShort(); | |
byte res = cb.readByte(); | |
byte safi = cb.readByte(); | |
return new MultiProtocolExtnCapabilityTlv(afi, res, safi); | |
} | |
@Override | |
public String toString() { | |
return MoreObjects.toStringHelper(getClass()) | |
.add("Type", TYPE) | |
.add("Length", LENGTH) | |
.add("AFI", afi) | |
.add("Reserved", res) | |
.add("SAFI", safi).toString(); | |
} | |
} |