| /* |
| * 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.PcepEndPointsObject; |
| import org.onosproject.pcepio.types.PcepObjectHeader; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Provides PCEP Endpoints Object. |
| */ |
| public class PcepEndPointsObjectVer1 implements PcepEndPointsObject { |
| |
| /* |
| * RFC : 5440 , section : 7.6 |
| * An End point is defined as follows: |
| END-POINTS Object-Class is 4. |
| |
| END-POINTS Object-Type is 1 for IPv4 and 2 for IPv6. |
| 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 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Object-Class | OT |Res|P|I| Object Length (bytes) | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Source IPv4 address | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Destination IPv4 address | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| */ |
| protected static final Logger log = LoggerFactory.getLogger(PcepEndPointsObjectVer1.class); |
| |
| static final byte END_POINTS_OBJ_TYPE = 1; |
| static final byte END_POINTS_OBJ_CLASS = 4; |
| static final byte END_POINTS_OBJECT_VERSION = 1; |
| static final short END_POINTS_OBJ_MINIMUM_LENGTH = 12; |
| static byte endPointObjType; |
| |
| static final PcepObjectHeader DEFAULT_END_POINTS_OBJECT_HEADER = new PcepObjectHeader(END_POINTS_OBJ_CLASS, |
| END_POINTS_OBJ_TYPE, PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED, |
| END_POINTS_OBJ_MINIMUM_LENGTH); |
| |
| private PcepObjectHeader endPointsObjHeader; |
| int sourceIpAddress; |
| int destIpAddress; |
| |
| /** |
| * Constructor to initialize all variables. |
| * |
| * @param endPointsObjHeader end points object header |
| * @param sourceIpAddress source IP address |
| * @param destIpAddress destination IP address |
| */ |
| public PcepEndPointsObjectVer1(PcepObjectHeader endPointsObjHeader, int sourceIpAddress, int destIpAddress) { |
| |
| this.endPointsObjHeader = endPointsObjHeader; |
| this.sourceIpAddress = sourceIpAddress; |
| this.destIpAddress = destIpAddress; |
| } |
| |
| /** |
| * Sets End Points Object Header. |
| * |
| * @param obj of PcepObjectHeader |
| */ |
| public void setEndPointsObjHeader(PcepObjectHeader obj) { |
| this.endPointsObjHeader = obj; |
| } |
| |
| @Override |
| public void setSourceIpAddress(int sourceIpAddress) { |
| this.sourceIpAddress = sourceIpAddress; |
| } |
| |
| @Override |
| public void setDestIpAddress(int destIpAddress) { |
| this.destIpAddress = destIpAddress; |
| } |
| |
| @Override |
| public int getSourceIpAddress() { |
| return this.sourceIpAddress; |
| } |
| |
| @Override |
| public int getDestIpAddress() { |
| return this.destIpAddress; |
| } |
| |
| /** |
| * Reads from channel buffer and returns object of PcepEndPointsObject. |
| * |
| * @param cb of channel buffer |
| * @return object of PcepEndPointsObject |
| * @throws PcepParseException while parsing channel buffer |
| */ |
| public static PcepEndPointsObject read(ChannelBuffer cb) throws PcepParseException { |
| |
| PcepObjectHeader endPointsObjHeader; |
| int sourceIpAddress; |
| int destIpAddress; |
| |
| endPointsObjHeader = PcepObjectHeader.read(cb); |
| if (endPointsObjHeader.getObjType() == END_POINTS_OBJ_TYPE |
| && endPointsObjHeader.getObjClass() == END_POINTS_OBJ_CLASS) { |
| sourceIpAddress = cb.readInt(); |
| destIpAddress = cb.readInt(); |
| } else { |
| throw new PcepParseException("Expected PcepEndPointsObject."); |
| } |
| return new PcepEndPointsObjectVer1(endPointsObjHeader, sourceIpAddress, destIpAddress); |
| } |
| |
| @Override |
| public int write(ChannelBuffer cb) throws PcepParseException { |
| |
| int objStartIndex = cb.writerIndex(); |
| //write common header |
| int objLenIndex = endPointsObjHeader.write(cb); |
| |
| //write source IPv4 IP |
| cb.writeInt(sourceIpAddress); |
| //write destination IPv4 IP |
| cb.writeInt(destIpAddress); |
| |
| int length = cb.writerIndex() - objStartIndex; |
| //now write EndPoints Object Length |
| cb.setShort(objLenIndex, (short) length); |
| //will be helpful during print(). |
| endPointsObjHeader.setObjLen((short) length); |
| |
| return cb.writerIndex(); |
| |
| } |
| |
| /** |
| * Builder class for PCEP end points objects. |
| */ |
| public static class Builder implements PcepEndPointsObject.Builder { |
| |
| private boolean bIsHeaderSet = false; |
| private boolean bIsSourceIpAddressset = false; |
| private boolean bIsDestIpAddressset = false; |
| private PcepObjectHeader endpointsObjHeader; |
| private int sourceIpAddress; |
| private int destIpAddress; |
| |
| private boolean bIsPFlagSet = false; |
| private boolean bPFlag; |
| |
| private boolean bIsIFlagSet = false; |
| private boolean bIFlag; |
| |
| @Override |
| public PcepEndPointsObject build() throws PcepParseException { |
| |
| PcepObjectHeader endpointsObjHeader = this.bIsHeaderSet ? this.endpointsObjHeader |
| : DEFAULT_END_POINTS_OBJECT_HEADER; |
| |
| if (bIsPFlagSet) { |
| endpointsObjHeader.setPFlag(bPFlag); |
| } |
| |
| if (bIsIFlagSet) { |
| endpointsObjHeader.setIFlag(bIFlag); |
| } |
| |
| if (!this.bIsSourceIpAddressset) { |
| throw new PcepParseException("SourceIpAddress not set while building EndPoints object"); |
| } |
| |
| if (!this.bIsDestIpAddressset) { |
| throw new PcepParseException("DestIpAddress not set while building EndPoints object"); |
| } |
| |
| return new PcepEndPointsObjectVer1(endpointsObjHeader, this.sourceIpAddress, this.destIpAddress); |
| } |
| |
| @Override |
| public PcepObjectHeader getEndPointsObjHeader() { |
| return this.endpointsObjHeader; |
| } |
| |
| @Override |
| public Builder setEndPointsObjHeader(PcepObjectHeader obj) { |
| this.endpointsObjHeader = obj; |
| this.bIsHeaderSet = true; |
| return this; |
| } |
| |
| @Override |
| public int getSourceIpAddress() { |
| return this.sourceIpAddress; |
| } |
| |
| @Override |
| public Builder setSourceIpAddress(int sourceIpAddress) { |
| this.sourceIpAddress = sourceIpAddress; |
| this.bIsSourceIpAddressset = true; |
| return this; |
| } |
| |
| @Override |
| public int getDestIpAddress() { |
| return this.destIpAddress; |
| } |
| |
| @Override |
| public Builder setDestIpAddress(int destIpAddress) { |
| this.destIpAddress = destIpAddress; |
| this.bIsDestIpAddressset = true; |
| return this; |
| } |
| |
| @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 String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("sourceIpAddress", sourceIpAddress) |
| .add("destIpAddress", destIpAddress).toString(); |
| } |
| |
| } |