bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 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 | |
| 17 | package org.onosproject.pcepio.protocol.ver1; |
| 18 | |
| 19 | import org.jboss.netty.buffer.ChannelBuffer; |
| 20 | import org.onosproject.pcepio.exceptions.PcepParseException; |
| 21 | import org.onosproject.pcepio.protocol.PcepBandwidthObject; |
| 22 | import org.onosproject.pcepio.types.PcepObjectHeader; |
| 23 | import org.slf4j.Logger; |
| 24 | import org.slf4j.LoggerFactory; |
| 25 | |
| 26 | import com.google.common.base.MoreObjects; |
| 27 | |
| 28 | /** |
| 29 | * Provides PcepBandwidthObject. |
| 30 | */ |
| 31 | public class PcepBandwidthObjectVer1 implements PcepBandwidthObject { |
| 32 | |
| 33 | /* |
| 34 | * RFC : 5440 , section : 7.7. |
| 35 | 0 1 2 3 |
| 36 | 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 |
| 37 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 38 | | Bandwidth | |
| 39 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 40 | |
| 41 | The BANDWIDTH Object format |
| 42 | */ |
| 43 | |
| 44 | protected static final Logger log = LoggerFactory.getLogger(PcepBandwidthObjectVer1.class); |
| 45 | /* |
| 46 | * Requested bandwidth: BANDWIDTH Object-Type is 1. |
| 47 | Bandwidth of an existing TE LSP for which a re-optimization is |
| 48 | requested. BANDWIDTH Object-Type is 2. |
| 49 | */ |
| 50 | //Right now handling type 1 |
| 51 | public static final byte BANDWIDTH_OBJ_TYPE = 1; |
| 52 | public static final byte BANDWIDTH_OBJ_CLASS = 5; |
| 53 | public static final byte BANDWIDTH_OBJECT_VERSION = 1; |
| 54 | public static final short BANDWIDTH_OBJ_MINIMUM_LENGTH = 8; |
| 55 | |
| 56 | static final PcepObjectHeader DEFAULT_BANDWIDTH_OBJECT_HEADER = new PcepObjectHeader(BANDWIDTH_OBJ_CLASS, |
| 57 | BANDWIDTH_OBJ_TYPE, PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED, |
| 58 | BANDWIDTH_OBJ_MINIMUM_LENGTH); |
| 59 | |
| 60 | private PcepObjectHeader bandwidthObjHeader; |
| 61 | private int iBandwidth; |
| 62 | |
| 63 | /** |
| 64 | * Constructor to bandwidth object header and bandwidth. |
| 65 | * |
| 66 | * @param bandwidthObjHeader bandwidth object header |
| 67 | * @param iBandwidth bandwidth value |
| 68 | */ |
| 69 | public PcepBandwidthObjectVer1(PcepObjectHeader bandwidthObjHeader, int iBandwidth) { |
| 70 | this.bandwidthObjHeader = bandwidthObjHeader; |
| 71 | this.iBandwidth = iBandwidth; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Constructor to initialize bandwidth. |
| 76 | * |
| 77 | * @param iBandwidth bandwidth value |
| 78 | */ |
| 79 | public PcepBandwidthObjectVer1(int iBandwidth) { |
| 80 | this.bandwidthObjHeader = DEFAULT_BANDWIDTH_OBJECT_HEADER; |
| 81 | this.iBandwidth = iBandwidth; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Returns Object Header. |
| 86 | * |
| 87 | * @return bandwidthObjHeader |
| 88 | */ |
| 89 | public PcepObjectHeader getBandwidthObjHeader() { |
| 90 | return this.bandwidthObjHeader; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Sets Object Header. |
| 95 | * |
| 96 | * @param obj bandwidth object header |
| 97 | */ |
| 98 | public void setBandwidthObjHeader(PcepObjectHeader obj) { |
| 99 | this.bandwidthObjHeader = obj; |
| 100 | } |
| 101 | |
| 102 | @Override |
| 103 | public int getBandwidth() { |
| 104 | return this.iBandwidth; |
| 105 | } |
| 106 | |
| 107 | @Override |
| 108 | public void setBandwidth(int iBandwidth) { |
| 109 | this.iBandwidth = iBandwidth; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Reads from channel buffer and returns object of PcepBandwidthObject. |
| 114 | * |
| 115 | * @param cb channel buffer to parse |
| 116 | * @return object of PcepBandwidthObject |
| 117 | * @throws PcepParseException while parsing channel buffer |
| 118 | */ |
| 119 | public static PcepBandwidthObject read(ChannelBuffer cb) throws PcepParseException { |
| 120 | |
| 121 | PcepObjectHeader bandwidthObjHeader; |
| 122 | int iBandwidth; |
| 123 | |
| 124 | bandwidthObjHeader = PcepObjectHeader.read(cb); |
| 125 | iBandwidth = cb.readInt(); |
| 126 | |
| 127 | return new PcepBandwidthObjectVer1(bandwidthObjHeader, iBandwidth); |
| 128 | } |
| 129 | |
| 130 | @Override |
| 131 | public int write(ChannelBuffer cb) throws PcepParseException { |
| 132 | |
| 133 | //write Object header |
| 134 | int objStartIndex = cb.writerIndex(); |
| 135 | int objLenIndex = bandwidthObjHeader.write(cb); |
| 136 | |
| 137 | if (objLenIndex <= 0) { |
| 138 | throw new PcepParseException("Failed to write bandwidth object header. Index " + objLenIndex); |
| 139 | } |
| 140 | |
| 141 | cb.writeInt(iBandwidth); |
| 142 | short hLength = (short) (cb.writerIndex() - objStartIndex); |
| 143 | cb.setShort(objLenIndex, hLength); |
| 144 | //will be helpful during print(). |
| 145 | bandwidthObjHeader.setObjLen(hLength); |
| 146 | |
| 147 | return cb.writerIndex() - objStartIndex; |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * builder class for PCEP bandwidth object. |
| 152 | */ |
| 153 | public static class Builder implements PcepBandwidthObject.Builder { |
| 154 | |
| 155 | private PcepObjectHeader bandwidthObjHeader; |
| 156 | private boolean bIsHeaderSet = false; |
| 157 | |
| 158 | private int iBandwidth; |
| 159 | private boolean bIsBandwidthSet = false; |
| 160 | |
| 161 | private boolean bPFlag; |
| 162 | private boolean bIsPFlagSet = false; |
| 163 | |
| 164 | private boolean bIFlag; |
| 165 | private boolean bIsIFlagSet = false; |
| 166 | |
| 167 | @Override |
| 168 | public PcepBandwidthObject build() throws PcepParseException { |
| 169 | |
| 170 | PcepObjectHeader bandwidthObjHeader = this.bIsHeaderSet ? this.bandwidthObjHeader |
| 171 | : DEFAULT_BANDWIDTH_OBJECT_HEADER; |
| 172 | |
| 173 | if (bIsPFlagSet) { |
| 174 | bandwidthObjHeader.setPFlag(bPFlag); |
| 175 | } |
| 176 | |
| 177 | if (bIsIFlagSet) { |
| 178 | bandwidthObjHeader.setIFlag(bIFlag); |
| 179 | } |
| 180 | |
| 181 | if (!this.bIsBandwidthSet) { |
| 182 | throw new PcepParseException("bandwidth not Set while building Bandwidth Object."); |
| 183 | } |
| 184 | |
| 185 | return new PcepBandwidthObjectVer1(bandwidthObjHeader, iBandwidth); |
| 186 | } |
| 187 | |
| 188 | @Override |
| 189 | public int getBandwidth() { |
| 190 | return this.iBandwidth; |
| 191 | } |
| 192 | |
| 193 | @Override |
| 194 | public PcepObjectHeader getBandwidthObjHeader() { |
| 195 | return this.bandwidthObjHeader; |
| 196 | } |
| 197 | |
| 198 | @Override |
| 199 | public Builder setBandwidthObjHeader(PcepObjectHeader obj) { |
| 200 | this.bandwidthObjHeader = obj; |
| 201 | return this; |
| 202 | } |
| 203 | |
| 204 | @Override |
| 205 | public Builder setBandwidth(int iBandwidth) { |
| 206 | this.iBandwidth = iBandwidth; |
| 207 | this.bIsBandwidthSet = true; |
| 208 | return this; |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | public Builder setPFlag(boolean value) { |
| 213 | this.bPFlag = value; |
| 214 | this.bIsPFlagSet = true; |
| 215 | return this; |
| 216 | } |
| 217 | |
| 218 | @Override |
| 219 | public Builder setIFlag(boolean value) { |
| 220 | this.bIFlag = value; |
| 221 | this.bIsIFlagSet = true; |
| 222 | return this; |
| 223 | } |
| 224 | |
| 225 | } |
| 226 | |
| 227 | @Override |
bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 228 | public String toString() { |
bharat saraswal | e180630 | 2015-08-21 12:16:46 +0530 | [diff] [blame] | 229 | return MoreObjects.toStringHelper(getClass()).add("BandwidthObjectHeader", bandwidthObjHeader) |
| 230 | .add("Bandwidth", iBandwidth).toString(); |
bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 231 | } |
| 232 | } |