/* | |
* 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; | |
/** | |
* Provide node Flags bits. | |
*/ | |
public class NodeFlagBitsTlv implements PcepValueType { | |
/* Reference :[I-D.ietf-idr- ls-distribution] /3.3.1.1 | |
* 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=[TBD21] | Length=1 | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
|O|T|E|B| Reserved| | |
+-+-+-+-+-+-+-+-+-+ | |
*/ | |
protected static final Logger log = LoggerFactory.getLogger(NodeFlagBitsTlv.class); | |
public static final short TYPE = 14; | |
public static final short LENGTH = 1; | |
public static final int SET = 1; | |
public static final byte OFLAG_SET = (byte) 0x80; | |
public static final byte TFLAG_SET = 0x40; | |
public static final byte EFLAG_SET = 0x20; | |
public static final byte BFLAG_SET = 0x10; | |
private final byte rawValue; | |
private final boolean bOFlag; | |
private final boolean bTFlag; | |
private final boolean bEFlag; | |
private final boolean bBFlag; | |
private final boolean isRawValueSet; | |
/** | |
* constructor to initialize rawValue. | |
* | |
* @param rawValue of Node Flag Bits TLV | |
*/ | |
public NodeFlagBitsTlv(byte rawValue) { | |
this.rawValue = rawValue; | |
isRawValueSet = true; | |
byte temp = rawValue; | |
this.bOFlag = (temp & OFLAG_SET) == OFLAG_SET ? true : false; | |
this.bTFlag = (temp & TFLAG_SET) == TFLAG_SET ? true : false; | |
this.bEFlag = (temp & EFLAG_SET) == EFLAG_SET ? true : false; | |
this.bBFlag = (temp & BFLAG_SET) == BFLAG_SET ? true : false; | |
} | |
/** | |
* constructor to initialize different Flags. | |
* | |
* @param bOFlag O-flag | |
* @param bTFlag T-flag | |
* @param bEFlag E-flag | |
* @param bBFlag B-flag | |
*/ | |
public NodeFlagBitsTlv(boolean bOFlag, boolean bTFlag, boolean bEFlag, boolean bBFlag) { | |
this.bOFlag = bOFlag; | |
this.bTFlag = bTFlag; | |
this.bEFlag = bEFlag; | |
this.bBFlag = bBFlag; | |
this.rawValue = 0; | |
this.isRawValueSet = false; | |
} | |
/** | |
* Returns newly created NodeFlagBitsTlv object. | |
* | |
* @param raw of Node Flag Bits TLV | |
* @return new object of NodeFlagBitsTlv | |
*/ | |
public static NodeFlagBitsTlv of(final byte raw) { | |
return new NodeFlagBitsTlv(raw); | |
} | |
/** | |
* Returns raw value of NodeFlagBitsTlv. | |
* | |
* @return rawValue raw value | |
*/ | |
public byte getbyte() { | |
return rawValue; | |
} | |
/** | |
* Returns O-flag. | |
* | |
* @return bOFlag O-flag | |
*/ | |
public boolean getOFlag() { | |
return bOFlag; | |
} | |
/** | |
* Returns T-flag. | |
* | |
* @return bTFlag T-flag | |
*/ | |
public boolean getTFlag() { | |
return bTFlag; | |
} | |
/** | |
* Returns E-flag. | |
* | |
* @return bEFlag E-flag | |
*/ | |
public boolean getEFlag() { | |
return bEFlag; | |
} | |
/** | |
* Returns B-flag. | |
* | |
* @return bBFlag B-flag | |
*/ | |
public boolean getBFlag() { | |
return bBFlag; | |
} | |
@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(bOFlag, bTFlag, bEFlag, bBFlag); | |
} | |
} | |
@Override | |
public boolean equals(Object obj) { | |
if (this == obj) { | |
return true; | |
} | |
if (obj instanceof NodeFlagBitsTlv) { | |
NodeFlagBitsTlv other = (NodeFlagBitsTlv) obj; | |
if (isRawValueSet) { | |
return Objects.equals(this.bOFlag, other.bOFlag) && Objects.equals(this.bTFlag, other.bTFlag) | |
&& Objects.equals(this.bEFlag, other.bEFlag) && Objects.equals(this.bBFlag, other.bBFlag); | |
} 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 (bOFlag) { | |
temp = (byte) (temp | OFLAG_SET); | |
} | |
if (bTFlag) { | |
temp = (byte) (temp | TFLAG_SET); | |
} | |
if (bEFlag) { | |
temp = (byte) (temp | EFLAG_SET); | |
} | |
if (bBFlag) { | |
temp = (byte) (temp | BFLAG_SET); | |
} | |
c.writeByte(temp); | |
} | |
return c.writerIndex() - iLenStartIndex; | |
} | |
/** | |
* Reads the channel buffer and returns object of NodeFlagBitsTlv. | |
* | |
* @param c input channel buffer | |
* @return object of NodeFlagBitsTlv | |
*/ | |
public static PcepValueType read(ChannelBuffer c) { | |
return NodeFlagBitsTlv.of(c.readByte()); | |
} | |
@Override | |
public String toString() { | |
return MoreObjects.toStringHelper(getClass()).add("Type", TYPE).add("Length", LENGTH) | |
.add("OFlag", (bOFlag) ? 1 : 0).add("TFlag", (bTFlag) ? 1 : 0).add("EFlag", (bEFlag) ? 1 : 0) | |
.add("BFlag", (bBFlag) ? 1 : 0).toString(); | |
} | |
} |