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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 org.jboss.netty.buffer.ChannelBuffer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.MoreObjects;
/**
* Provides PcepRsvpObjectHeader.
*/
public class PcepRsvpObjectHeader {
/*
0 1 2 3
+-------------+-------------+-------------+-------------+
| Length (bytes) | Class-Num | C-Type |
+-------------+-------------+-------------+-------------+
| |
// (Object contents) //
| |
+-------------+-------------+-------------+-------------+
ERROR_SPEC object Header
*/
protected static final Logger log = LoggerFactory.getLogger(PcepRsvpObjectHeader.class);
public static final boolean REQ_OBJ_MUST_PROCESS = true;
public static final boolean REQ_OBJ_OPTIONAL_PROCESS = false;
public static final boolean RSP_OBJ_IGNORED = true;
public static final boolean RSP_OBJ_PROCESSED = false;
public static final int OBJECT_TYPE_SHIFT_VALUE = 4;
private byte objClassNum;
private byte objClassType;
private short objLen;
/**
* Constructor to initialize class num, length and type.
*
* @param objClassNum object class number
* @param objClassType object class type
* @param objLen object length
*/
public PcepRsvpObjectHeader(byte objClassNum, byte objClassType, short objLen) {
this.objClassNum = objClassNum;
this.objClassType = objClassType;
this.objLen = objLen;
}
/**
* Sets the Class-Num.
*
* @param value object class number
*/
public void setObjClassNum(byte value) {
this.objClassNum = value;
}
/**
* Sets the Class type.
*
* @param value object class type
*/
public void setObjClassType(byte value) {
this.objClassType = value;
}
/**
* Sets the Class Length.
*
* @param value object length
*/
public void setObjLen(short value) {
this.objLen = value;
}
/**
* Returns Object Length.
*
* @return objLen
*/
public short getObjLen() {
return this.objLen;
}
/**
* Returns Object num.
*
* @return objClassNum
*/
public byte getObjClassNum() {
return this.objClassNum;
}
/**
* Returns Object type.
*
* @return objClassType
*/
public byte getObjClassType() {
return this.objClassType;
}
/**
* Writes the byte stream of PcepRsvpObjectHeader to channel buffer.
*
* @param cb of type channel buffer
* @return object length index in channel buffer
*/
public int write(ChannelBuffer cb) {
int iLenStartIndex = cb.writerIndex();
cb.writeShort((short) 0);
cb.writeByte(this.objClassNum);
cb.writeByte(this.objClassType);
return cb.writerIndex() - iLenStartIndex;
}
/**
* Reads the PcepRsvpObjectHeader.
*
* @param cb input channel buffer
* @return PcepRsvpObjectHeader
*/
public static PcepRsvpObjectHeader read(ChannelBuffer cb) {
log.debug("read ");
byte objClassNum;
byte objClassType;
short objLen;
objLen = cb.readShort();
objClassNum = cb.readByte();
objClassType = cb.readByte();
return new PcepRsvpObjectHeader(objClassNum, objClassType, objLen);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("ObjectClassNum", objClassNum)
.add("ObjectCType", objClassType)
.add("ObjectLength", objLen)
.toString();
}
}
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