Mahesh Poojary S | f1bbd36 | 2016-02-25 18:19:59 +0530 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
Mahesh Poojary S | f1bbd36 | 2016-02-25 18:19:59 +0530 | [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 | |
| 17 | /** |
| 18 | * @author b00295750 |
| 19 | * |
| 20 | */ |
| 21 | package org.onosproject.pcepio.types; |
| 22 | |
| 23 | import java.util.Objects; |
| 24 | |
| 25 | import org.jboss.netty.buffer.ChannelBuffer; |
| 26 | import org.onosproject.pcepio.protocol.PcepVersion; |
| 27 | import org.slf4j.Logger; |
| 28 | import org.slf4j.LoggerFactory; |
| 29 | |
| 30 | import com.google.common.base.MoreObjects; |
| 31 | |
| 32 | /** |
| 33 | * Provides Autonomous system number sub object. |
| 34 | */ |
| 35 | public class AutonomousSystemNumberSubObject implements PcepValueType { |
| 36 | |
| 37 | /*Reference : RFC 3209 : 4.3.3.4 |
| 38 | * 0 1 2 3 |
| 39 | 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 |
| 40 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 41 | |L| Type | Length | AS number (2-octet) | |
| 42 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 43 | */ |
| 44 | protected static final Logger log = LoggerFactory.getLogger(AutonomousSystemNumberSubObject.class); |
| 45 | |
| 46 | public static final byte TYPE = (byte) 0x32; |
| 47 | public static final byte LENGTH = 4; |
| 48 | public static final byte VALUE_LENGTH = 2; |
| 49 | public static final byte OBJ_LENGTH = 4; |
| 50 | public static final byte LBIT = 0; |
| 51 | public static final int SHIFT_LBIT_POSITION = 7; |
| 52 | private short asNumber; |
| 53 | |
| 54 | /** |
| 55 | * Constructor to initialize AS number. |
| 56 | * |
| 57 | * @param asNumber AS number |
| 58 | */ |
| 59 | public AutonomousSystemNumberSubObject(short asNumber) { |
| 60 | this.asNumber = asNumber; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Returns a new instance of AutonomousSystemNumberSubObject. |
| 65 | * |
| 66 | * @param asNumber AS number |
| 67 | * @return object of AutonomousSystemNumberSubObject |
| 68 | */ |
| 69 | public static AutonomousSystemNumberSubObject of(short asNumber) { |
| 70 | return new AutonomousSystemNumberSubObject(asNumber); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Returns value of AS number. |
| 75 | * |
| 76 | * @return value of AS number |
| 77 | */ |
| 78 | public short getAsNumber() { |
| 79 | return asNumber; |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public PcepVersion getVersion() { |
| 84 | return PcepVersion.PCEP_1; |
| 85 | } |
| 86 | |
| 87 | @Override |
| 88 | public short getType() { |
| 89 | return TYPE; |
| 90 | } |
| 91 | |
| 92 | @Override |
| 93 | public short getLength() { |
| 94 | return LENGTH; |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | public int hashCode() { |
| 99 | return Objects.hash(asNumber); |
| 100 | } |
| 101 | |
| 102 | @Override |
| 103 | public boolean equals(Object obj) { |
| 104 | if (this == obj) { |
| 105 | return true; |
| 106 | } |
| 107 | if (obj instanceof AutonomousSystemNumberSubObject) { |
| 108 | AutonomousSystemNumberSubObject other = (AutonomousSystemNumberSubObject) obj; |
| 109 | return Objects.equals(this.asNumber, other.asNumber); |
| 110 | } |
| 111 | return false; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Reads the channel buffer and returns object of AutonomousSystemNumberSubObject. |
| 116 | * |
| 117 | * @param c type of channel buffer |
| 118 | * @return object of AutonomousSystemNumberSubObject |
| 119 | */ |
| 120 | public static PcepValueType read(ChannelBuffer c) { |
| 121 | short asNumber = c.readShort(); |
| 122 | return new AutonomousSystemNumberSubObject(asNumber); |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | public int write(ChannelBuffer c) { |
| 127 | int iLenStartIndex = c.writerIndex(); |
| 128 | byte bValue = LBIT; |
| 129 | bValue = (byte) (bValue << SHIFT_LBIT_POSITION); |
| 130 | bValue = (byte) (bValue | TYPE); |
| 131 | c.writeByte(bValue); |
| 132 | c.writeByte(OBJ_LENGTH); |
| 133 | c.writeShort(asNumber); |
| 134 | |
| 135 | return c.writerIndex() - iLenStartIndex; |
| 136 | } |
| 137 | |
| 138 | @Override |
| 139 | public String toString() { |
| 140 | return MoreObjects.toStringHelper(getClass()) |
| 141 | .add("Type", TYPE) |
| 142 | .add("Length", LENGTH) |
| 143 | .add("AsNumber", asNumber) |
| 144 | .toString(); |
| 145 | } |
| 146 | } |