| /* |
| * Copyright 2015-present 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; |
| |
| /** |
| * Provides Pcep Fec Object IPv4 object. |
| */ |
| 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 = (byte) 226; |
| 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(); |
| } |
| } |