diff options
Diffstat (limited to 'framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepInterLayerObjectVer1.java')
| -rw-r--r-- | framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepInterLayerObjectVer1.java | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepInterLayerObjectVer1.java b/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepInterLayerObjectVer1.java new file mode 100644 index 00000000..5130d9e9 --- /dev/null +++ b/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepInterLayerObjectVer1.java @@ -0,0 +1,263 @@ +/* + * 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.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(); + } +} |