Thejaswi N K | 0b516ba | 2015-11-11 01:14:01 +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 | package org.onosproject.bgpio.types.attr; |
| 17 | |
| 18 | import java.util.Objects; |
| 19 | |
| 20 | import org.jboss.netty.buffer.ChannelBuffer; |
| 21 | import org.onosproject.bgpio.exceptions.BGPParseException; |
| 22 | import org.onosproject.bgpio.types.BGPErrorType; |
| 23 | import org.onosproject.bgpio.types.BGPValueType; |
| 24 | import org.onosproject.bgpio.util.Validation; |
| 25 | import org.slf4j.Logger; |
| 26 | import org.slf4j.LoggerFactory; |
| 27 | |
| 28 | import com.google.common.base.MoreObjects; |
| 29 | |
| 30 | /** |
| 31 | * Implements BGP attribute Is Is Administrative area. |
| 32 | */ |
| 33 | public final class BgpLinkAttrIsIsAdminstGrp implements BGPValueType { |
| 34 | |
| 35 | protected static final Logger log = LoggerFactory |
| 36 | .getLogger(BgpLinkAttrIsIsAdminstGrp.class); |
| 37 | |
| 38 | public static final int ATTRLINK_PROTECTIONTYPE = 1088; |
| 39 | public static final int ISIS_ADMIN_DATA_LEN = 4; |
| 40 | |
| 41 | /* ISIS administrative group */ |
| 42 | private final long isisAdminGrp; |
| 43 | |
| 44 | /** |
| 45 | * Constructor to initialize the values. |
| 46 | * |
| 47 | * @param isisAdminGrp ISIS protocol admin group |
| 48 | */ |
| 49 | public BgpLinkAttrIsIsAdminstGrp(long isisAdminGrp) { |
| 50 | this.isisAdminGrp = isisAdminGrp; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Returns object of this class with specified values. |
| 55 | * |
| 56 | * @param isisAdminGrp ISIS admin group |
| 57 | * @return object of BgpLinkAttrIsIsAdminstGrp |
| 58 | */ |
| 59 | public static BgpLinkAttrIsIsAdminstGrp of(final long isisAdminGrp) { |
| 60 | return new BgpLinkAttrIsIsAdminstGrp(isisAdminGrp); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Reads the BGP link attributes of ISIS administrative group area. |
| 65 | * |
| 66 | * @param cb Channel buffer |
| 67 | * @return object of type BgpLinkAttrIsIsAdminstGrp |
| 68 | * @throws BGPParseException while parsing BgpLinkAttrIsIsAdminstGrp |
| 69 | */ |
| 70 | public static BgpLinkAttrIsIsAdminstGrp read(ChannelBuffer cb) |
| 71 | throws BGPParseException { |
| 72 | long isisAdminGrp; |
| 73 | short lsAttrLength = cb.readShort(); |
| 74 | |
| 75 | if ((lsAttrLength != ISIS_ADMIN_DATA_LEN) |
| 76 | || (cb.readableBytes() < lsAttrLength)) { |
| 77 | Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR, |
| 78 | BGPErrorType.ATTRIBUTE_LENGTH_ERROR, |
| 79 | lsAttrLength); |
| 80 | } |
| 81 | |
| 82 | isisAdminGrp = cb.readUnsignedInt(); |
| 83 | |
| 84 | return BgpLinkAttrIsIsAdminstGrp.of(isisAdminGrp); |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Link attributes of ISIS administrative group area. |
| 89 | * |
| 90 | * @return long value of the administrative group area |
| 91 | */ |
| 92 | public long linkAttrIsIsAdminGrp() { |
| 93 | return isisAdminGrp; |
| 94 | } |
| 95 | |
| 96 | @Override |
| 97 | public short getType() { |
| 98 | return ATTRLINK_PROTECTIONTYPE; |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public int hashCode() { |
| 103 | return Objects.hash(isisAdminGrp); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public boolean equals(Object obj) { |
| 108 | if (this == obj) { |
| 109 | return true; |
| 110 | } |
| 111 | |
| 112 | if (obj instanceof BgpLinkAttrIsIsAdminstGrp) { |
| 113 | BgpLinkAttrIsIsAdminstGrp other = (BgpLinkAttrIsIsAdminstGrp) obj; |
| 114 | return Objects.equals(isisAdminGrp, other.isisAdminGrp); |
| 115 | } |
| 116 | return false; |
| 117 | } |
| 118 | |
| 119 | @Override |
| 120 | public int write(ChannelBuffer cb) { |
| 121 | // TODO This will be implemented in the next version |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | public String toString() { |
| 127 | return MoreObjects.toStringHelper(getClass()) |
| 128 | .add("isisAdminGrp", isisAdminGrp).toString(); |
| 129 | } |
| 130 | } |