Shashikanth VH | 73b1277 | 2016-04-18 14:28:45 +0530 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
Shashikanth VH | 73b1277 | 2016-04-18 14:28:45 +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 | package org.onosproject.bgpio.types; |
| 17 | |
| 18 | import com.google.common.base.MoreObjects; |
| 19 | |
| 20 | import org.jboss.netty.buffer.ChannelBuffer; |
| 21 | import org.onosproject.bgpio.exceptions.BgpParseException; |
| 22 | import org.onosproject.bgpio.util.Validation; |
| 23 | |
| 24 | import java.util.ArrayList; |
| 25 | import java.util.Iterator; |
| 26 | import java.util.List; |
| 27 | import java.util.Objects; |
| 28 | |
| 29 | /** |
| 30 | * Provides implementation of BGP wide community integer subtlv. |
| 31 | */ |
| 32 | public class WideCommunityInteger implements BgpValueType { |
| 33 | public static final short TYPE = 4; |
| 34 | private List<Integer> integer; |
| 35 | |
| 36 | /** |
| 37 | * Creates an instance of wide community integer subtlv. |
| 38 | * |
| 39 | * @param integer integer |
| 40 | */ |
| 41 | public WideCommunityInteger(List<Integer> integer) { |
| 42 | this.integer = integer; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Returns object of this class with specified values. |
| 47 | * |
| 48 | * @param integer wide community subtlv integer |
| 49 | * @return object of WideCommunityInteger |
| 50 | */ |
| 51 | public static WideCommunityInteger of(List<Integer> integer) { |
| 52 | return new WideCommunityInteger(integer); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Returns wide community subtlv integer. |
| 57 | * |
| 58 | * @return wide community subtlv integer |
| 59 | */ |
| 60 | public List<Integer> integer() { |
| 61 | return integer; |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Sets wide community subtlv integer. |
| 66 | * |
| 67 | * @param integer wide community subtlv integer |
| 68 | */ |
| 69 | public void setInteger(List<Integer> integer) { |
| 70 | this.integer = integer; |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public int hashCode() { |
| 75 | return Objects.hash(integer); |
| 76 | } |
| 77 | |
| 78 | @Override |
| 79 | public boolean equals(Object obj) { |
| 80 | if (this == obj) { |
| 81 | return true; |
| 82 | } |
| 83 | |
| 84 | if (obj == null) { |
| 85 | return false; |
| 86 | } |
| 87 | |
| 88 | if (obj instanceof WideCommunityInteger) { |
| 89 | WideCommunityInteger other = (WideCommunityInteger) obj; |
| 90 | return Objects.equals(integer, other.integer); |
| 91 | } |
| 92 | return false; |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public int write(ChannelBuffer c) { |
| 97 | int iLenStartIndex = c.writerIndex(); |
| 98 | |
| 99 | Iterator<Integer> listIterator = integer.iterator(); |
| 100 | c.writeByte(TYPE); |
| 101 | |
| 102 | int iLengthIndex = c.writerIndex(); |
| 103 | c.writeShort(0); |
| 104 | |
| 105 | while (listIterator.hasNext()) { |
| 106 | Integer integer = listIterator.next(); |
| 107 | if (integer instanceof Integer) { |
| 108 | c.writeInt(integer); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | int length = c.writerIndex() - iLengthIndex; |
| 113 | c.setShort(iLengthIndex, (short) (length - 2)); |
| 114 | |
| 115 | return c.writerIndex() - iLenStartIndex; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Reads the channel buffer and returns object of WideCommunityInteger. |
| 120 | * |
| 121 | * @param c ChannelBuffer |
| 122 | * @return object of WideCommunityInteger |
| 123 | * @throws BgpParseException on read error |
| 124 | */ |
| 125 | public static WideCommunityInteger read(ChannelBuffer c) throws BgpParseException { |
| 126 | |
| 127 | List<Integer> integer = new ArrayList<>(); |
| 128 | short length; |
| 129 | |
| 130 | if (c.readableBytes() < 2) { |
| 131 | Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| 132 | c.readableBytes()); |
| 133 | } |
| 134 | |
| 135 | length = c.readShort(); |
| 136 | if (length == 0) { |
| 137 | return new WideCommunityInteger(integer); |
| 138 | } |
| 139 | |
| 140 | if (c.readableBytes() < length) { |
| 141 | Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| 142 | c.readableBytes()); |
| 143 | } |
| 144 | |
| 145 | while (c.readableBytes() > 0) { |
| 146 | if (c.readableBytes() < 4) { |
| 147 | Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| 148 | c.readableBytes()); |
| 149 | } |
| 150 | integer.add(c.readInt()); |
| 151 | } |
| 152 | |
| 153 | return new WideCommunityInteger(integer); |
| 154 | } |
| 155 | |
| 156 | @Override |
| 157 | public String toString() { |
| 158 | return MoreObjects.toStringHelper(getClass()) |
| 159 | .omitNullValues() |
| 160 | .add("integer", integer) |
| 161 | .toString(); |
| 162 | } |
| 163 | |
| 164 | @Override |
| 165 | public int compareTo(Object o) { |
| 166 | // TODO Auto-generated method stub |
| 167 | return 0; |
| 168 | } |
| 169 | |
| 170 | @Override |
| 171 | public short getType() { |
| 172 | // TODO Auto-generated method stub |
| 173 | return 0; |
| 174 | } |
| 175 | } |