/* | |
* 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.protocol.ver1; | |
import org.jboss.netty.buffer.ChannelBuffer; | |
import org.onosproject.pcepio.exceptions.PcepParseException; | |
import org.onosproject.pcepio.protocol.PcepFecObjectIPv4; | |
import org.onosproject.pcepio.protocol.PcepVersion; | |
import org.onosproject.pcepio.types.PcepObjectHeader; | |
import org.slf4j.Logger; | |
import org.slf4j.LoggerFactory; | |
import com.google.common.base.MoreObjects; | |
public class PcepFecObjectIPv4Ver1 implements PcepFecObjectIPv4 { | |
/* | |
* ref : draft-zhao-pce-pcep-extension-for-pce-controller-01 , section : 7.5 | |
* | |
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 | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| IPv4 Node ID | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
FEC Object-Type is 1 IPv4 Node ID | |
*/ | |
protected static final Logger log = LoggerFactory.getLogger(PcepFecObjectIPv4Ver1.class); | |
public static final byte FEC_OBJ_TYPE = 1; | |
public static final byte FEC_OBJ_CLASS = 63; //to be defined | |
public static final byte FEC_OBJECT_VERSION = 1; | |
public static final short FEC_OBJ_MINIMUM_LENGTH = 8; | |
public static final int MINIMUM_COMMON_HEADER_LENGTH = 4; | |
static final PcepObjectHeader DEFAULT_FEC_OBJECT_HEADER = new PcepObjectHeader(FEC_OBJ_CLASS, FEC_OBJ_TYPE, | |
PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED, FEC_OBJ_MINIMUM_LENGTH); | |
private PcepObjectHeader fecObjHeader; | |
private int nodeID; | |
/** | |
* Constructor to initialize parameters for PCEP fec object. | |
* | |
* @param fecObjHeader fec object header | |
* @param nodeID node id | |
*/ | |
public PcepFecObjectIPv4Ver1(PcepObjectHeader fecObjHeader, int nodeID) { | |
this.fecObjHeader = fecObjHeader; | |
this.nodeID = nodeID; | |
} | |
/** | |
* Sets the Object Header. | |
* | |
* @param obj object header | |
*/ | |
public void setFecIpv4ObjHeader(PcepObjectHeader obj) { | |
this.fecObjHeader = obj; | |
} | |
@Override | |
public void setNodeID(int nodeID) { | |
this.nodeID = nodeID; | |
} | |
/** | |
* Returns Object Header. | |
* | |
* @return fecObjHeader fec object header | |
*/ | |
public PcepObjectHeader getFecIpv4ObjHeader() { | |
return this.fecObjHeader; | |
} | |
@Override | |
public int getNodeID() { | |
return this.nodeID; | |
} | |
/** | |
* Reads from channel buffer and returns object of PcepFecObjectIPv4. | |
* | |
* @param cb of channel buffer | |
* @return object of PcepFecObjectIPv4 | |
* @throws PcepParseException when fails to read from channel buffer | |
*/ | |
public static PcepFecObjectIPv4 read(ChannelBuffer cb) throws PcepParseException { | |
PcepObjectHeader fecObjHeader; | |
int nodeID; | |
fecObjHeader = PcepObjectHeader.read(cb); | |
nodeID = cb.readInt(); | |
return new PcepFecObjectIPv4Ver1(fecObjHeader, nodeID); | |
} | |
@Override | |
public int write(ChannelBuffer cb) throws PcepParseException { | |
int objStartIndex = cb.writerIndex(); | |
//write common header | |
int objLenIndex = fecObjHeader.write(cb); | |
cb.writeInt(nodeID); | |
//now write FEC IPv4 Object Length | |
cb.setShort(objLenIndex, (short) (cb.writerIndex() - objStartIndex)); | |
return cb.writerIndex(); | |
} | |
/** | |
* Builder class for PCEP fec pobject IPv4. | |
*/ | |
public static class Builder implements PcepFecObjectIPv4.Builder { | |
private boolean bIsHeaderSet = false; | |
private boolean bIsNodeIdset = false; | |
private PcepObjectHeader fecObjHeader; | |
private int nodeID; | |
private boolean bIsPFlagSet = false; | |
private boolean bPFlag; | |
private boolean bIsIFlagSet = false; | |
private boolean bIFlag; | |
@Override | |
public PcepFecObjectIPv4 build() throws PcepParseException { | |
PcepObjectHeader fecObjHeader = this.bIsHeaderSet ? this.fecObjHeader : DEFAULT_FEC_OBJECT_HEADER; | |
if (!this.bIsNodeIdset) { | |
throw new PcepParseException("NodeID not set while building PcepFecObjectIPv4 object."); | |
} | |
if (bIsPFlagSet) { | |
fecObjHeader.setPFlag(bPFlag); | |
} | |
if (bIsIFlagSet) { | |
fecObjHeader.setIFlag(bIFlag); | |
} | |
return new PcepFecObjectIPv4Ver1(fecObjHeader, this.nodeID); | |
} | |
@Override | |
public Builder setPFlag(boolean value) { | |
this.bPFlag = value; | |
this.bIsPFlagSet = true; | |
return this; | |
} | |
@Override | |
public Builder setIFlag(boolean value) { | |
this.bIFlag = value; | |
this.bIsIFlagSet = true; | |
return this; | |
} | |
@Override | |
public PcepObjectHeader getFecIpv4ObjHeader() { | |
return this.fecObjHeader; | |
} | |
@Override | |
public Builder setFecIpv4ObjHeader(PcepObjectHeader obj) { | |
this.fecObjHeader = obj; | |
this.bIsHeaderSet = true; | |
return this; | |
} | |
@Override | |
public int getNodeID() { | |
return this.nodeID; | |
} | |
@Override | |
public Builder setNodeID(int value) { | |
this.nodeID = value; | |
this.bIsNodeIdset = true; | |
return this; | |
} | |
} | |
@Override | |
public PcepVersion getVersion() { | |
return PcepVersion.PCEP_1; | |
} | |
@Override | |
public int getType() { | |
return FEC_OBJ_TYPE; | |
} | |
@Override | |
public String toString() { | |
return MoreObjects.toStringHelper(getClass()).add("fecObjHeader", fecObjHeader).add("nodeID: ", nodeID) | |
.toString(); | |
} | |
} |