| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * 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.PcepInterLayerObject; |
| import org.onosproject.pcepio.types.PcepObjectHeader; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Provides PCEP inter layer object. |
| */ |
| public class PcepInterLayerObjectVer1 implements PcepInterLayerObject { |
| |
| /* |
| * 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 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Reserved |N|I| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| protected static final Logger log = LoggerFactory.getLogger(PcepInterLayerObjectVer1.class); |
| |
| public static final byte INTER_LAYER_OBJ_TYPE = 1; |
| public static final byte INTER_LAYER_OBJ_CLASS = 18; |
| public static final byte INTER_LAYER_OBJECT_VERSION = 1; |
| public static final short INTER_LAYER_OBJ_MINIMUM_LENGTH = 8; |
| public static final boolean DEFAULT_IFLAG = false; |
| public static final boolean DEFAULT_NFLAG = false; |
| public static final int OBJECT_HEADER_LENGTH = 4; |
| public static final int NFLAG_SHIFT_VALUE = 0x02; |
| public static final int IFLAG_SHIFT_VALUE = 0x01; |
| |
| static final PcepObjectHeader DEFAULT_INTER_LAYER_OBJECT_HEADER = new PcepObjectHeader(INTER_LAYER_OBJ_CLASS, |
| INTER_LAYER_OBJ_TYPE, PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED, |
| INTER_LAYER_OBJ_MINIMUM_LENGTH); |
| |
| private PcepObjectHeader interLayerObjHeader; |
| private boolean bNFlag; |
| private boolean bIFlag; |
| |
| /** |
| * Constructor to initialize all parameters for Pcep Inter Layer Object. |
| * |
| * @param interLayerObjHeader inter layer object header |
| * @param bNFlag N flag |
| * @param bIFlag I flag |
| */ |
| public PcepInterLayerObjectVer1(PcepObjectHeader interLayerObjHeader, boolean bNFlag, boolean bIFlag) { |
| |
| this.interLayerObjHeader = interLayerObjHeader; |
| this.bNFlag = bNFlag; |
| this.bIFlag = bIFlag; |
| } |
| |
| /** |
| * Sets Object Header. |
| * |
| * @param obj object header |
| */ |
| public void setInterLayerObjHeader(PcepObjectHeader obj) { |
| this.interLayerObjHeader = obj; |
| } |
| |
| @Override |
| public void setbNFlag(boolean bNFlag) { |
| this.bNFlag = bNFlag; |
| } |
| |
| @Override |
| public void setbIFlag(boolean bIFlag) { |
| this.bIFlag = bIFlag; |
| } |
| |
| /** |
| * Returns object header. |
| * |
| * @return inter Layer Object Header |
| */ |
| public PcepObjectHeader getInterLayerObjHeader() { |
| return this.interLayerObjHeader; |
| } |
| |
| @Override |
| public boolean getbNFlag() { |
| return this.bNFlag; |
| } |
| |
| @Override |
| public boolean getbIFlag() { |
| return this.bIFlag; |
| } |
| |
| /** |
| * Reads channel buffer and returns object of PcepInterLayerObject. |
| * |
| * @param cb of type channel buffer |
| * @return object of PcepInterLayerObject |
| * @throws PcepParseException when fails to read from channel buffer |
| */ |
| public static PcepInterLayerObject read(ChannelBuffer cb) throws PcepParseException { |
| |
| PcepObjectHeader interLayerObjHeader; |
| boolean bNFlag; |
| boolean bIFlag; |
| |
| interLayerObjHeader = PcepObjectHeader.read(cb); |
| |
| //take only InterLayerObject buffer. |
| ChannelBuffer tempCb = cb.readBytes(interLayerObjHeader.getObjLen() - OBJECT_HEADER_LENGTH); |
| |
| int iTemp = tempCb.readInt(); |
| bIFlag = ((iTemp & (byte) IFLAG_SHIFT_VALUE) == IFLAG_SHIFT_VALUE); |
| bNFlag = ((iTemp & (byte) NFLAG_SHIFT_VALUE) == NFLAG_SHIFT_VALUE); |
| |
| return new PcepInterLayerObjectVer1(interLayerObjHeader, bNFlag, bIFlag); |
| } |
| |
| @Override |
| public int write(ChannelBuffer cb) throws PcepParseException { |
| |
| //write Object header |
| int objStartIndex = cb.writerIndex(); |
| |
| int objLenIndex = interLayerObjHeader.write(cb); |
| |
| if (objLenIndex <= 0) { |
| throw new PcepParseException(" ObjectLength Index is " + objLenIndex); |
| } |
| |
| int iTemp = 0; |
| |
| if (bIFlag) { |
| iTemp = iTemp | (byte) IFLAG_SHIFT_VALUE; |
| } |
| if (bNFlag) { |
| iTemp = iTemp | (byte) NFLAG_SHIFT_VALUE; |
| } |
| |
| cb.writeInt(iTemp); |
| |
| //Update object length now |
| int length = cb.writerIndex() - objStartIndex; |
| //will be helpful during print(). |
| interLayerObjHeader.setObjLen((short) length); |
| cb.setShort(objLenIndex, (short) length); |
| |
| objLenIndex = cb.writerIndex(); |
| return objLenIndex; |
| } |
| |
| /** |
| * Builder class for PCEP inter layer object. |
| */ |
| public static class Builder implements PcepInterLayerObject.Builder { |
| |
| private boolean bIsHeaderSet = false; |
| private boolean bIsNFlagset = false; |
| private boolean bIsIFlagset = false; |
| |
| private PcepObjectHeader interLayerObjHeader; |
| private boolean bNFlag; |
| private boolean bIFlag; |
| |
| private boolean bIsPFlagSet = false; |
| private boolean bPFalg; |
| |
| private boolean bIsIFlagSet = false; |
| private boolean iFlag; |
| |
| @Override |
| public PcepInterLayerObject build() { |
| PcepObjectHeader interLayerObjHeader = this.bIsHeaderSet ? this.interLayerObjHeader |
| : DEFAULT_INTER_LAYER_OBJECT_HEADER; |
| |
| boolean bNFlag = this.bIsNFlagset ? this.bNFlag : DEFAULT_NFLAG; |
| boolean bIFlag = this.bIsIFlagset ? this.bIFlag : DEFAULT_IFLAG; |
| |
| if (bIsPFlagSet) { |
| interLayerObjHeader.setPFlag(bPFalg); |
| } |
| |
| if (bIsIFlagSet) { |
| interLayerObjHeader.setIFlag(iFlag); |
| } |
| return new PcepInterLayerObjectVer1(interLayerObjHeader, bNFlag, bIFlag); |
| } |
| |
| @Override |
| public PcepObjectHeader getInterLayerObjHeader() { |
| return this.interLayerObjHeader; |
| } |
| |
| @Override |
| public Builder setInterLayerObjHeader(PcepObjectHeader obj) { |
| this.interLayerObjHeader = obj; |
| this.bIsHeaderSet = true; |
| return this; |
| } |
| |
| @Override |
| public boolean getbNFlag() { |
| return this.bNFlag; |
| } |
| |
| @Override |
| public Builder setbNFlag(boolean value) { |
| this.bNFlag = value; |
| this.bIsNFlagset = true; |
| return this; |
| } |
| |
| @Override |
| public boolean getbIFlag() { |
| return this.bIFlag; |
| } |
| |
| @Override |
| public Builder setbIFlag(boolean value) { |
| this.bIFlag = value; |
| this.bIsIFlagset = true; |
| return this; |
| } |
| |
| @Override |
| public Builder setPFlag(boolean value) { |
| this.bPFalg = value; |
| this.bIsPFlagSet = true; |
| return this; |
| } |
| |
| @Override |
| public Builder setIFlag(boolean value) { |
| this.iFlag = value; |
| this.bIsIFlagSet = true; |
| return this; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("IFlag", bIFlag) |
| .add("NFlag", bNFlag).toString(); |
| } |
| } |