Sho SHIMIZU | e81e4db | 2015-09-03 09:44:38 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2015-present Open Networking Laboratory |
Sho SHIMIZU | e81e4db | 2015-09-03 09:44:38 -0700 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.pcepio.protocol.ver1; |
| 17 | |
| 18 | import org.jboss.netty.buffer.ChannelBuffer; |
| 19 | import org.onosproject.pcepio.exceptions.PcepParseException; |
| 20 | import org.onosproject.pcepio.protocol.PcepInterLayerObject; |
| 21 | import org.onosproject.pcepio.types.PcepObjectHeader; |
| 22 | import org.slf4j.Logger; |
| 23 | import org.slf4j.LoggerFactory; |
| 24 | |
| 25 | import com.google.common.base.MoreObjects; |
| 26 | |
| 27 | /** |
| 28 | * Provides PCEP inter layer object. |
| 29 | */ |
| 30 | public class PcepInterLayerObjectVer1 implements PcepInterLayerObject { |
| 31 | |
| 32 | /* |
| 33 | * 0 1 2 3 |
| 34 | 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 |
| 35 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 36 | | Reserved |N|I| |
| 37 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 38 | */ |
| 39 | protected static final Logger log = LoggerFactory.getLogger(PcepInterLayerObjectVer1.class); |
| 40 | |
| 41 | public static final byte INTER_LAYER_OBJ_TYPE = 1; |
| 42 | public static final byte INTER_LAYER_OBJ_CLASS = 18; |
| 43 | public static final byte INTER_LAYER_OBJECT_VERSION = 1; |
| 44 | public static final short INTER_LAYER_OBJ_MINIMUM_LENGTH = 8; |
| 45 | public static final boolean DEFAULT_IFLAG = false; |
| 46 | public static final boolean DEFAULT_NFLAG = false; |
| 47 | public static final int OBJECT_HEADER_LENGTH = 4; |
| 48 | public static final int NFLAG_SHIFT_VALUE = 0x02; |
| 49 | public static final int IFLAG_SHIFT_VALUE = 0x01; |
Sho SHIMIZU | e81e4db | 2015-09-03 09:44:38 -0700 | [diff] [blame] | 50 | |
| 51 | static final PcepObjectHeader DEFAULT_INTER_LAYER_OBJECT_HEADER = new PcepObjectHeader(INTER_LAYER_OBJ_CLASS, |
| 52 | INTER_LAYER_OBJ_TYPE, PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED, |
| 53 | INTER_LAYER_OBJ_MINIMUM_LENGTH); |
| 54 | |
| 55 | private PcepObjectHeader interLayerObjHeader; |
| 56 | private boolean bNFlag; |
| 57 | private boolean bIFlag; |
| 58 | |
| 59 | /** |
| 60 | * Constructor to initialize all parameters for Pcep Inter Layer Object. |
| 61 | * |
| 62 | * @param interLayerObjHeader inter layer object header |
| 63 | * @param bNFlag N flag |
| 64 | * @param bIFlag I flag |
| 65 | */ |
| 66 | public PcepInterLayerObjectVer1(PcepObjectHeader interLayerObjHeader, boolean bNFlag, boolean bIFlag) { |
| 67 | |
| 68 | this.interLayerObjHeader = interLayerObjHeader; |
| 69 | this.bNFlag = bNFlag; |
| 70 | this.bIFlag = bIFlag; |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Sets Object Header. |
| 75 | * |
| 76 | * @param obj object header |
| 77 | */ |
| 78 | public void setInterLayerObjHeader(PcepObjectHeader obj) { |
| 79 | this.interLayerObjHeader = obj; |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public void setbNFlag(boolean bNFlag) { |
| 84 | this.bNFlag = bNFlag; |
| 85 | } |
| 86 | |
| 87 | @Override |
| 88 | public void setbIFlag(boolean bIFlag) { |
| 89 | this.bIFlag = bIFlag; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Returns object header. |
| 94 | * |
| 95 | * @return inter Layer Object Header |
| 96 | */ |
| 97 | public PcepObjectHeader getInterLayerObjHeader() { |
| 98 | return this.interLayerObjHeader; |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public boolean getbNFlag() { |
| 103 | return this.bNFlag; |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public boolean getbIFlag() { |
| 108 | return this.bIFlag; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Reads channel buffer and returns object of PcepInterLayerObject. |
| 113 | * |
| 114 | * @param cb of type channel buffer |
| 115 | * @return object of PcepInterLayerObject |
| 116 | * @throws PcepParseException when fails to read from channel buffer |
| 117 | */ |
| 118 | public static PcepInterLayerObject read(ChannelBuffer cb) throws PcepParseException { |
| 119 | |
| 120 | PcepObjectHeader interLayerObjHeader; |
| 121 | boolean bNFlag; |
| 122 | boolean bIFlag; |
| 123 | |
| 124 | interLayerObjHeader = PcepObjectHeader.read(cb); |
| 125 | |
| 126 | //take only InterLayerObject buffer. |
| 127 | ChannelBuffer tempCb = cb.readBytes(interLayerObjHeader.getObjLen() - OBJECT_HEADER_LENGTH); |
| 128 | |
| 129 | int iTemp = tempCb.readInt(); |
Phanendra Manda | f346ea8 | 2015-09-04 15:21:39 -0700 | [diff] [blame] | 130 | bIFlag = ((iTemp & (byte) IFLAG_SHIFT_VALUE) == IFLAG_SHIFT_VALUE); |
| 131 | bNFlag = ((iTemp & (byte) NFLAG_SHIFT_VALUE) == NFLAG_SHIFT_VALUE); |
Sho SHIMIZU | e81e4db | 2015-09-03 09:44:38 -0700 | [diff] [blame] | 132 | |
| 133 | return new PcepInterLayerObjectVer1(interLayerObjHeader, bNFlag, bIFlag); |
| 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public int write(ChannelBuffer cb) throws PcepParseException { |
| 138 | |
| 139 | //write Object header |
| 140 | int objStartIndex = cb.writerIndex(); |
| 141 | |
| 142 | int objLenIndex = interLayerObjHeader.write(cb); |
| 143 | |
| 144 | if (objLenIndex <= 0) { |
| 145 | throw new PcepParseException(" ObjectLength Index is " + objLenIndex); |
| 146 | } |
| 147 | |
| 148 | int iTemp = 0; |
| 149 | |
| 150 | if (bIFlag) { |
| 151 | iTemp = iTemp | (byte) IFLAG_SHIFT_VALUE; |
| 152 | } |
| 153 | if (bNFlag) { |
| 154 | iTemp = iTemp | (byte) NFLAG_SHIFT_VALUE; |
| 155 | } |
| 156 | |
| 157 | cb.writeInt(iTemp); |
| 158 | |
| 159 | //Update object length now |
| 160 | int length = cb.writerIndex() - objStartIndex; |
| 161 | //will be helpful during print(). |
| 162 | interLayerObjHeader.setObjLen((short) length); |
| 163 | cb.setShort(objLenIndex, (short) length); |
| 164 | |
| 165 | objLenIndex = cb.writerIndex(); |
| 166 | return objLenIndex; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Builder class for PCEP inter layer object. |
| 171 | */ |
| 172 | public static class Builder implements PcepInterLayerObject.Builder { |
| 173 | |
| 174 | private boolean bIsHeaderSet = false; |
| 175 | private boolean bIsNFlagset = false; |
| 176 | private boolean bIsIFlagset = false; |
| 177 | |
| 178 | private PcepObjectHeader interLayerObjHeader; |
| 179 | private boolean bNFlag; |
| 180 | private boolean bIFlag; |
| 181 | |
| 182 | private boolean bIsPFlagSet = false; |
| 183 | private boolean bPFalg; |
| 184 | |
| 185 | private boolean bIsIFlagSet = false; |
| 186 | private boolean iFlag; |
| 187 | |
| 188 | @Override |
| 189 | public PcepInterLayerObject build() { |
| 190 | PcepObjectHeader interLayerObjHeader = this.bIsHeaderSet ? this.interLayerObjHeader |
| 191 | : DEFAULT_INTER_LAYER_OBJECT_HEADER; |
| 192 | |
| 193 | boolean bNFlag = this.bIsNFlagset ? this.bNFlag : DEFAULT_NFLAG; |
| 194 | boolean bIFlag = this.bIsIFlagset ? this.bIFlag : DEFAULT_IFLAG; |
| 195 | |
| 196 | if (bIsPFlagSet) { |
| 197 | interLayerObjHeader.setPFlag(bPFalg); |
| 198 | } |
| 199 | |
| 200 | if (bIsIFlagSet) { |
| 201 | interLayerObjHeader.setIFlag(iFlag); |
| 202 | } |
| 203 | return new PcepInterLayerObjectVer1(interLayerObjHeader, bNFlag, bIFlag); |
| 204 | } |
| 205 | |
| 206 | @Override |
| 207 | public PcepObjectHeader getInterLayerObjHeader() { |
| 208 | return this.interLayerObjHeader; |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | public Builder setInterLayerObjHeader(PcepObjectHeader obj) { |
| 213 | this.interLayerObjHeader = obj; |
| 214 | this.bIsHeaderSet = true; |
| 215 | return this; |
| 216 | } |
| 217 | |
| 218 | @Override |
| 219 | public boolean getbNFlag() { |
| 220 | return this.bNFlag; |
| 221 | } |
| 222 | |
| 223 | @Override |
| 224 | public Builder setbNFlag(boolean value) { |
| 225 | this.bNFlag = value; |
| 226 | this.bIsNFlagset = true; |
| 227 | return this; |
| 228 | } |
| 229 | |
| 230 | @Override |
| 231 | public boolean getbIFlag() { |
| 232 | return this.bIFlag; |
| 233 | } |
| 234 | |
| 235 | @Override |
| 236 | public Builder setbIFlag(boolean value) { |
| 237 | this.bIFlag = value; |
| 238 | this.bIsIFlagset = true; |
| 239 | return this; |
| 240 | } |
| 241 | |
| 242 | @Override |
| 243 | public Builder setPFlag(boolean value) { |
| 244 | this.bPFalg = value; |
| 245 | this.bIsPFlagSet = true; |
| 246 | return this; |
| 247 | } |
| 248 | |
| 249 | @Override |
| 250 | public Builder setIFlag(boolean value) { |
| 251 | this.iFlag = value; |
| 252 | this.bIsIFlagSet = true; |
| 253 | return this; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | @Override |
| 258 | public String toString() { |
Sho SHIMIZU | 7cdbcf7 | 2015-09-03 14:43:05 -0700 | [diff] [blame] | 259 | return MoreObjects.toStringHelper(getClass()) |
| 260 | .add("IFlag", bIFlag) |
| 261 | .add("NFlag", bNFlag).toString(); |
Sho SHIMIZU | e81e4db | 2015-09-03 09:44:38 -0700 | [diff] [blame] | 262 | } |
| 263 | } |