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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.pcepio.types;
import java.util.Objects;
import org.jboss.netty.buffer.ChannelBuffer;
import org.onosproject.pcepio.protocol.PcepVersion;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.MoreObjects;
/**
* Provides MPLS Protocol Mask.
*/
public class MPLSProtocolMaskTlv implements PcepValueType {
/* Reference :[I-D.ietf-idr-ls-distribution]/3.3.2.2
* 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=TDB39 | Length =1 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|L|R| Reserved |
+-+-+-+-+-+-+-+-+
*/
protected static final Logger log = LoggerFactory.getLogger(MPLSProtocolMaskTlv.class);
public static final short TYPE = 1094; //TDB39
public static final short LENGTH = 1;
public static final byte LFLAG_SET = (byte) 0x80;
public static final byte RFLAG_SET = 0x40;
private final byte rawValue;
private final boolean bLFlag;
private final boolean bRFlag;
private final boolean isRawValueSet;
/**
* constructor to initialize rawValue.
*
* @param rawValue MPLS Protocol Mask Flag Bits
*/
public MPLSProtocolMaskTlv(byte rawValue) {
this.rawValue = rawValue;
this.isRawValueSet = true;
this.bLFlag = (rawValue & LFLAG_SET) == LFLAG_SET;
this.bRFlag = (rawValue & RFLAG_SET) == RFLAG_SET;
}
/**
* constructor to initialize different Flags.
*
* @param bLFlag L-flag
* @param bRFlag R-flag
*/
public MPLSProtocolMaskTlv(boolean bLFlag, boolean bRFlag) {
this.bLFlag = bLFlag;
this.bRFlag = bRFlag;
this.rawValue = 0;
isRawValueSet = false;
}
/**
* Returns newly created MPLSProtocolMaskTlv object.
*
* @param raw MPLS Protocol Mask Tlv
* @return new object of MPLS Protocol Mask Tlv
*/
public static MPLSProtocolMaskTlv of(final byte raw) {
return new MPLSProtocolMaskTlv(raw);
}
/**
* Returns L-flag.
*
* @return bLFlag L-flag
*/
public boolean getbLFlag() {
return bLFlag;
}
/**
* Returns R-flag.
*
* @return bRFlag R-flag
*/
public boolean getbRFlag() {
return bRFlag;
}
/**
* Returns raw value.
*
* @return rawValue raw value
*/
public byte getByte() {
return rawValue;
}
@Override
public PcepVersion getVersion() {
return PcepVersion.PCEP_1;
}
@Override
public short getType() {
return TYPE;
}
@Override
public short getLength() {
return LENGTH;
}
@Override
public int hashCode() {
if (isRawValueSet) {
return Objects.hash(rawValue);
} else {
return Objects.hash(bLFlag, bRFlag);
}
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof MPLSProtocolMaskTlv) {
MPLSProtocolMaskTlv other = (MPLSProtocolMaskTlv) obj;
if (isRawValueSet) {
return Objects.equals(this.rawValue, other.rawValue);
} else {
return Objects.equals(this.bLFlag, other.bLFlag) && Objects.equals(this.bRFlag, other.bRFlag);
}
}
return false;
}
@Override
public int write(ChannelBuffer c) {
int iLenStartIndex = c.writerIndex();
c.writeShort(TYPE);
c.writeShort(LENGTH);
if (isRawValueSet) {
c.writeByte(rawValue);
} else {
byte temp = 0;
if (bLFlag) {
temp = (byte) (temp | LFLAG_SET);
}
if (bRFlag) {
temp = (byte) (temp | RFLAG_SET);
}
c.writeByte(temp);
}
return c.writerIndex() - iLenStartIndex;
}
/**
* Reads the channel buffer and returns object of MPLS Protocol Mask Tlv.
*
* @param c input channel buffer
* @return object of MPLS Protocol Mask Tlv
*/
public static PcepValueType read(ChannelBuffer c) {
byte temp = c.readByte();
boolean bLFlag;
boolean bRFlag;
bLFlag = (temp & LFLAG_SET) == LFLAG_SET;
bRFlag = (temp & RFLAG_SET) == RFLAG_SET;
return new MPLSProtocolMaskTlv(bLFlag, bRFlag);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("Type", TYPE)
.add("Length", LENGTH)
.add("Value", rawValue)
.toString();
}
}
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