/* | |
* 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 int SET = 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; | |
isRawValueSet = true; | |
byte temp = rawValue; | |
if ((temp & LFLAG_SET) == SET) { | |
this.bLFlag = true; | |
} else { | |
this.bLFlag = false; | |
} | |
if ((temp & RFLAG_SET) == SET) { | |
this.bRFlag = true; | |
} else { | |
this.bRFlag = false; | |
} | |
} | |
/** | |
* 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.bLFlag, other.bLFlag) && Objects.equals(this.bRFlag, other.bRFlag); | |
} else { | |
return Objects.equals(this.rawValue, other.rawValue); | |
} | |
} | |
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; | |
if ((temp & LFLAG_SET) == SET) { | |
bLFlag = true; | |
} else { | |
bLFlag = false; | |
} | |
if ((temp & RFLAG_SET) == SET) { | |
bRFlag = true; | |
} else { | |
bRFlag = false; | |
} | |
return new MPLSProtocolMaskTlv(bLFlag, bRFlag); | |
} | |
@Override | |
public String toString() { | |
return MoreObjects.toStringHelper(getClass()).add("Type", TYPE).add("Length", LENGTH).add("Value", rawValue) | |
.toString(); | |
} | |
} |