Phaneendra Manda | 1c0061d | 2015-08-06 12:29:38 +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.types; |
| 18 | |
| 19 | import org.jboss.netty.buffer.ChannelBuffer; |
| 20 | import org.slf4j.Logger; |
| 21 | import org.slf4j.LoggerFactory; |
| 22 | |
| 23 | /** |
| 24 | * Provides PcepRsvpObjectHeader. |
| 25 | */ |
| 26 | public class PcepRsvpObjectHeader { |
| 27 | |
| 28 | /* |
| 29 | 0 1 2 3 |
| 30 | +-------------+-------------+-------------+-------------+ |
| 31 | | Length (bytes) | Class-Num | C-Type | |
| 32 | +-------------+-------------+-------------+-------------+ |
| 33 | | | |
| 34 | // (Object contents) // |
| 35 | | | |
| 36 | +-------------+-------------+-------------+-------------+ |
| 37 | |
| 38 | ERROR_SPEC object Header |
| 39 | */ |
| 40 | |
| 41 | protected static final Logger log = LoggerFactory.getLogger(PcepRsvpObjectHeader.class); |
| 42 | |
| 43 | public static final boolean REQ_OBJ_MUST_PROCESS = true; |
| 44 | public static final boolean REQ_OBJ_OPTIONAL_PROCESS = false; |
| 45 | public static final boolean RSP_OBJ_IGNORED = true; |
| 46 | public static final boolean RSP_OBJ_PROCESSED = false; |
| 47 | public static final int OBJECT_TYPE_SHIFT_VALUE = 4; |
| 48 | private byte objClassNum; |
| 49 | private byte objClassType; |
| 50 | private short objLen; |
| 51 | |
| 52 | /** |
| 53 | * Constructor to initialize class num , length and type. |
| 54 | * |
| 55 | * @param objClassNum object class number |
| 56 | * @param objClassType object class type |
| 57 | * @param objLen object length |
| 58 | */ |
| 59 | public PcepRsvpObjectHeader(byte objClassNum, byte objClassType, short objLen) { |
| 60 | this.objClassNum = objClassNum; |
| 61 | this.objClassType = objClassType; |
| 62 | this.objLen = objLen; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Sets the Class num. |
| 67 | * |
| 68 | * @param value object class number |
| 69 | */ |
| 70 | public void setObjClassNum(byte value) { |
| 71 | this.objClassNum = value; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Sets the Class type. |
| 76 | * |
| 77 | * @param value object class type |
| 78 | */ |
| 79 | public void setObjClassType(byte value) { |
| 80 | this.objClassType = value; |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Sets the Class Length. |
| 85 | * |
| 86 | * @param value object length |
| 87 | */ |
| 88 | public void setObjLen(short value) { |
| 89 | this.objLen = value; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Returns Object Length. |
| 94 | * |
| 95 | * @return objLen |
| 96 | */ |
| 97 | public short getObjLen() { |
| 98 | return this.objLen; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Returns Object num. |
| 103 | * |
| 104 | * @return objClassNum |
| 105 | */ |
| 106 | public byte getObjClassNum() { |
| 107 | return this.objClassNum; |
| 108 | } |
| 109 | |
| 110 | /** |
| 111 | * Returns Object type. |
| 112 | * |
| 113 | * @return objClassType |
| 114 | */ |
| 115 | public byte getObjClassType() { |
| 116 | return this.objClassType; |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Writes the byte stream of PcepRsvpObjectHeader to channel buffer. |
| 121 | * |
| 122 | * @param bb of type channel buffer |
| 123 | * @return object length index in channel buffer |
| 124 | */ |
| 125 | public int write(ChannelBuffer bb) { |
| 126 | int iLenStartIndex = bb.writerIndex(); |
| 127 | bb.writeShort((short) 0); |
| 128 | bb.writeByte(this.objClassNum); |
| 129 | bb.writeByte(this.objClassType); |
| 130 | return bb.writerIndex() - iLenStartIndex; |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Reads the PcepRsvpObjectHeader. |
| 135 | * |
| 136 | * @param bb of type channel buffer |
| 137 | * @return PcepRsvpObjectHeader |
| 138 | */ |
| 139 | public static PcepRsvpObjectHeader read(ChannelBuffer bb) { |
| 140 | log.debug("PcepRsvpObjectHeader ::read "); |
| 141 | byte objClassNum; |
| 142 | byte objClassType; |
| 143 | short objLen; |
| 144 | objLen = bb.readShort(); |
| 145 | objClassNum = bb.readByte(); |
| 146 | objClassType = bb.readByte(); |
| 147 | |
| 148 | return new PcepRsvpObjectHeader(objClassNum, objClassType, objLen); |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Prints the attribute of PcepRsvpObjectHeader. |
| 153 | */ |
| 154 | public void print() { |
| 155 | |
| 156 | log.debug("PcepObjectHeader"); |
| 157 | log.debug("Object Class-Num: " + objClassNum); |
| 158 | log.debug("Object C-Type: " + objClassType); |
| 159 | log.debug("Object Length: " + objLen); |
| 160 | } |
| 161 | } |