Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +0530 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2015-present Open Networking Foundation |
Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +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.attr; |
| 17 | |
| 18 | import java.util.Objects; |
| 19 | |
| 20 | import org.jboss.netty.buffer.ChannelBuffer; |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 21 | import org.onosproject.bgpio.exceptions.BgpParseException; |
| 22 | import org.onosproject.bgpio.types.BgpErrorType; |
| 23 | import org.onosproject.bgpio.types.BgpValueType; |
Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +0530 | [diff] [blame] | 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 MPLS protocol mask attribute. |
| 32 | */ |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 33 | public class BgpLinkAttrMplsProtocolMask implements BgpValueType { |
Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +0530 | [diff] [blame] | 34 | |
Ray Milkey | 9c9cde4 | 2018-01-12 14:22:06 -0800 | [diff] [blame^] | 35 | private static final Logger log = LoggerFactory |
Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +0530 | [diff] [blame] | 36 | .getLogger(BgpLinkAttrMplsProtocolMask.class); |
| 37 | |
| 38 | public static final int ATTRLINK_MPLSPROTOMASK = 1094; |
| 39 | public static final int MASK_BYTE_LEN = 1; |
| 40 | |
| 41 | private final boolean bLdp; |
| 42 | private final boolean bRsvpTe; |
| 43 | |
| 44 | public static final byte FIRST_BIT = (byte) 0x80; |
| 45 | public static final byte SECOND_BIT = 0x40; |
| 46 | |
| 47 | /** |
| 48 | * Constructor to initialize the values. |
| 49 | * |
| 50 | * @param bLdp boolean value true if LDP flag is available |
| 51 | * @param bRsvpTe boolean value true if RSVP TE information is available |
| 52 | */ |
| 53 | public BgpLinkAttrMplsProtocolMask(boolean bLdp, boolean bRsvpTe) { |
| 54 | this.bLdp = bLdp; |
| 55 | this.bRsvpTe = bRsvpTe; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Returns object of this class with specified values. |
| 60 | * |
| 61 | * @param bLdp boolean value true if LDP flag is available |
| 62 | * @param bRsvpTe boolean value true if RSVP TE information is available |
| 63 | * @return object of BgpLinkAttrMplsProtocolMask |
| 64 | */ |
| 65 | public static BgpLinkAttrMplsProtocolMask of(final boolean bLdp, |
| 66 | final boolean bRsvpTe) { |
| 67 | return new BgpLinkAttrMplsProtocolMask(bLdp, bRsvpTe); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Reads the BGP link attributes MPLS protocol mask. |
| 72 | * |
| 73 | * @param cb Channel buffer |
| 74 | * @return object of type BgpLinkAttrMPLSProtocolMask |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 75 | * @throws BgpParseException while parsing BgpLinkAttrMplsProtocolMask |
Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +0530 | [diff] [blame] | 76 | */ |
| 77 | public static BgpLinkAttrMplsProtocolMask read(ChannelBuffer cb) |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 78 | throws BgpParseException { |
Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +0530 | [diff] [blame] | 79 | boolean bLdp = false; |
| 80 | boolean bRsvpTe = false; |
| 81 | |
| 82 | short lsAttrLength = cb.readShort(); |
| 83 | |
| 84 | if ((lsAttrLength != MASK_BYTE_LEN) |
| 85 | || (cb.readableBytes() < lsAttrLength)) { |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 86 | Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| 87 | BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +0530 | [diff] [blame] | 88 | lsAttrLength); |
| 89 | } |
| 90 | |
| 91 | byte flags = cb.readByte(); |
| 92 | |
| 93 | bLdp = ((flags & (byte) FIRST_BIT) == FIRST_BIT); |
| 94 | bRsvpTe = ((flags & (byte) SECOND_BIT) == SECOND_BIT); |
| 95 | |
| 96 | return BgpLinkAttrMplsProtocolMask.of(bLdp, bRsvpTe); |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Returns true if LDP bit is set. |
| 101 | * |
| 102 | * @return True if LDP information is set else false. |
| 103 | */ |
| 104 | public boolean ldpBit() { |
| 105 | return bLdp; |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Returns RSVP TE information. |
| 110 | * |
| 111 | * @return True if RSVP TE information is set else false. |
| 112 | */ |
| 113 | public boolean rsvpBit() { |
| 114 | return bRsvpTe; |
| 115 | } |
| 116 | |
| 117 | @Override |
| 118 | public short getType() { |
| 119 | return ATTRLINK_MPLSPROTOMASK; |
| 120 | } |
| 121 | |
| 122 | @Override |
| 123 | public int hashCode() { |
| 124 | return Objects.hash(bLdp, bRsvpTe); |
| 125 | } |
| 126 | |
| 127 | @Override |
| 128 | public boolean equals(Object obj) { |
| 129 | if (this == obj) { |
| 130 | return true; |
| 131 | } |
| 132 | |
| 133 | if (obj instanceof BgpLinkAttrMplsProtocolMask) { |
| 134 | BgpLinkAttrMplsProtocolMask other = (BgpLinkAttrMplsProtocolMask) obj; |
| 135 | return Objects.equals(bLdp, other.bLdp) |
| 136 | && Objects.equals(bRsvpTe, other.bRsvpTe); |
| 137 | } |
| 138 | return false; |
| 139 | } |
| 140 | |
| 141 | @Override |
| 142 | public int write(ChannelBuffer cb) { |
| 143 | // TODO This will be implemented in the next version |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | @Override |
| 148 | public String toString() { |
| 149 | return MoreObjects.toStringHelper(getClass()) |
| 150 | .add("bLdp", bLdp).add("bRsvpTe", bRsvpTe).toString(); |
| 151 | } |
Priyanka B | 0204073 | 2015-11-29 11:30:29 +0530 | [diff] [blame] | 152 | |
| 153 | @Override |
| 154 | public int compareTo(Object o) { |
| 155 | // TODO Auto-generated method stub |
| 156 | return 0; |
| 157 | } |
Thejaswi N K | 9ad67e5 | 2015-10-14 16:35:23 +0530 | [diff] [blame] | 158 | } |