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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;
/**
* 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;
this.bOFlag = (rawValue & OFLAG_SET) == OFLAG_SET;
this.bTFlag = (rawValue & TFLAG_SET) == TFLAG_SET;
this.bEFlag = (rawValue & EFLAG_SET) == EFLAG_SET;
this.bBFlag = (rawValue & BFLAG_SET) == BFLAG_SET;
}
/**
* 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.rawValue, other.rawValue);
} else {
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);
}
}
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();
}
}
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