bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 1 | /*
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| 2 | * Copyright 2015 Open Networking Laboratory
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 |
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| 17 | package org.onosproject.pcepio.types;
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| 18 |
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| 19 | import java.util.Objects;
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| 20 |
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| 21 | import org.jboss.netty.buffer.ChannelBuffer;
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| 22 | import org.onosproject.pcepio.protocol.PcepNai;
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| 23 | import org.onosproject.pcepio.protocol.PcepVersion;
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| 24 | import org.slf4j.Logger;
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| 25 | import org.slf4j.LoggerFactory;
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| 26 |
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| 27 | import com.google.common.base.MoreObjects;
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| 28 |
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Phanendra Manda | 51fb9c2 | 2015-09-01 16:17:41 +0530 | [diff] [blame] | 29 | /**
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bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 30 | * Provides SrEroSubObject.
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| 31 | */
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| 32 | public class SrEroSubObject implements PcepValueType {
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| 33 | /*
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| 34 | SR-ERO subobject: (draft-ietf-pce-segment-routing-00)
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| 35 | 0 1 2 3
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| 36 | 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
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| 37 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 38 | |L| Type | Length | ST | Flags |F|S|C|M|
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| 39 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 40 | | SID |
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| 41 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 42 | // NAI (variable) //
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| 43 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 44 |
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| 45 |
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| 46 |
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| 47 | NAI
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| 48 |
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| 49 | 0 1 2 3
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| 50 | 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
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| 51 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 52 | | Local IPv4 address |
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| 53 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 54 | | Remote IPv4 address |
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| 55 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 56 |
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| 57 | NAI for IPv4 Adjacency
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| 58 |
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| 59 | 0 1 2 3
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| 60 | 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
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| 61 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 62 | // Local IPv6 address (16 bytes) //
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| 63 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 64 | // Remote IPv6 address (16 bytes) //
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| 65 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 66 |
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| 67 | NAI for IPv6 adjacency
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| 68 |
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| 69 | 0 1 2 3
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| 70 | 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
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| 71 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 72 | | Local Node-ID |
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| 73 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 74 | | Local Interface ID |
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| 75 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 76 | | Remote Node-ID |
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| 77 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 78 | | Remote Interface ID |
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| 79 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 80 |
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| 81 | NAI for Unnumbered adjacency with IPv4 Node IDs
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| 82 |
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| 83 | */
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| 84 | protected static final Logger log = LoggerFactory.getLogger(SrEroSubObject.class);
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| 85 |
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| 86 | public static final short TYPE = 0x60; //TODO : type to be defined
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| 87 | public static final short LENGTH = 12;
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| 88 | public static final short VALUE_LENGTH = 10;
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| 89 | public static final int SET = 1;
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| 90 | public static final byte MFLAG_SET = 0x01;
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| 91 | public static final byte CFLAG_SET = 0x02;
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| 92 | public static final byte SFLAG_SET = 0x04;
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| 93 | public static final byte FFLAG_SET = 0x08;
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| 94 | public static final byte SHIFT_ST = 12;
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| 95 |
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| 96 | private final boolean bFFlag;
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| 97 | private final boolean bSFlag;
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| 98 | private final boolean bCFlag;
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| 99 | private final boolean bMFlag;
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| 100 | private final byte st;
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| 101 |
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| 102 | private final int sID;
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| 103 | private final PcepNai nai;
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| 104 |
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| 105 | /**
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| 106 | * Constructor to initialize member variables.
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| 107 | *
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| 108 | * @param st SID type
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| 109 | * @param bFFlag F flag
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| 110 | * @param bSFlag S flag
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| 111 | * @param bCFlag C flag
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| 112 | * @param bMFlag M flag
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| 113 | * @param sID segment identifier value
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| 114 | * @param nai NAI associated with SID
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| 115 | */
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| 116 | public SrEroSubObject(byte st, boolean bFFlag, boolean bSFlag, boolean bCFlag, boolean bMFlag, int sID,
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| 117 | PcepNai nai) {
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| 118 | this.st = st;
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| 119 | this.bFFlag = bFFlag;
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| 120 | this.bSFlag = bSFlag;
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| 121 | this.bCFlag = bCFlag;
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| 122 | this.bMFlag = bMFlag;
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| 123 | this.sID = sID;
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| 124 | this.nai = nai;
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| 125 | }
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| 126 |
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| 127 | /**
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| 128 | * Creates object of SrEroSubObject.
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| 129 | *
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| 130 | * @param st SID type
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| 131 | * @param bFFlag F flag
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| 132 | * @param bSFlag S flag
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| 133 | * @param bCFlag C flag
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| 134 | * @param bMFlag M flag
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| 135 | * @param sID segment identifier value
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| 136 | * @param nai NAI associated with SID
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| 137 | * @return object of SrEroSubObject
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| 138 | */
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| 139 | public static SrEroSubObject of(byte st, boolean bFFlag, boolean bSFlag, boolean bCFlag, boolean bMFlag, int sID,
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| 140 | PcepNai nai) {
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| 141 | return new SrEroSubObject(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai);
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| 142 | }
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| 143 |
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| 144 | /**
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| 145 | * Returns SID type.
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| 146 | * @return st sid type
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| 147 | */
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| 148 | public byte getSt() {
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| 149 | return st;
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| 150 | }
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| 151 |
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| 152 | /**
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| 153 | * Returns bFFlag.
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| 154 | * @return bFFlag
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| 155 | */
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| 156 | public boolean getFFlag() {
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| 157 | return bFFlag;
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| 158 | }
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| 159 |
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| 160 | /**
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| 161 | * Returns bSFlag.
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| 162 | * @return bSFlag
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| 163 | */
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| 164 | public boolean getSFlag() {
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| 165 | return bSFlag;
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| 166 | }
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| 167 |
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| 168 | /**
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| 169 | * Returns bCFlag.
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| 170 | * @return bCFlag
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| 171 | */
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| 172 | public boolean getCFlag() {
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| 173 | return bCFlag;
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| 174 | }
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| 175 |
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| 176 | /**
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| 177 | * Returns bMFlag.
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| 178 | * @return bMFlag
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| 179 | */
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| 180 | public boolean getMFlag() {
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| 181 | return bMFlag;
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| 182 | }
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| 183 |
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| 184 | /**
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| 185 | * Returns sID.
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| 186 | * @return sID
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| 187 | */
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| 188 | public int getSID() {
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| 189 | return sID;
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| 190 | }
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| 191 |
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| 192 | /**
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| 193 | * Returns nai.
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| 194 | * @return nai
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| 195 | */
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| 196 | public PcepNai getNai() {
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| 197 | return nai;
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| 198 | }
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| 199 |
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| 200 | @Override
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| 201 | public PcepVersion getVersion() {
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| 202 | return PcepVersion.PCEP_1;
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| 203 | }
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| 204 |
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| 205 | @Override
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| 206 | public short getType() {
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| 207 | return TYPE;
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| 208 | }
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| 209 |
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| 210 | @Override
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| 211 | public short getLength() {
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| 212 | return LENGTH;
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| 213 | }
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| 214 |
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| 215 | @Override
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| 216 | public int hashCode() {
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| 217 | return Objects.hash(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai);
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| 218 | }
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| 219 |
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| 220 | @Override
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| 221 | public boolean equals(Object obj) {
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| 222 | if (this == obj) {
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| 223 | return true;
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| 224 | }
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| 225 | if (obj instanceof SrEroSubObject) {
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| 226 | SrEroSubObject other = (SrEroSubObject) obj;
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| 227 | return Objects.equals(this.st, other.st) && Objects.equals(this.bFFlag, other.bFFlag)
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| 228 | && Objects.equals(this.bSFlag, other.bSFlag) && Objects.equals(this.bCFlag, other.bCFlag)
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| 229 | && Objects.equals(this.bMFlag, other.bMFlag) && Objects.equals(this.sID, other.sID)
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| 230 | && Objects.equals(this.nai, other.nai);
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| 231 | }
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| 232 | return false;
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| 233 | }
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| 234 |
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| 235 | @Override
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| 236 | public int write(ChannelBuffer c) {
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| 237 | int iLenStartIndex = c.writerIndex();
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| 238 |
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| 239 | c.writeShort(TYPE);
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| 240 | c.writeShort(LENGTH);
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| 241 |
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| 242 | short temp = 0;
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| 243 | if (bMFlag) {
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| 244 | temp = (short) (temp | MFLAG_SET);
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| 245 | }
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| 246 | if (bCFlag) {
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| 247 | temp = (short) (temp | CFLAG_SET);
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| 248 | }
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| 249 | if (bSFlag) {
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| 250 | temp = (short) (temp | SFLAG_SET);
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| 251 | }
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| 252 | if (bFFlag) {
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| 253 | temp = (short) (temp | FFLAG_SET);
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| 254 | }
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| 255 | short tempST = (short) (st << SHIFT_ST);
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| 256 | temp = (short) (temp | tempST);
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| 257 | c.writeShort(temp);
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| 258 | c.writeInt(sID);
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| 259 | nai.write(c);
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| 260 |
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| 261 | return c.writerIndex() - iLenStartIndex;
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| 262 | }
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| 263 |
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| 264 | /**
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| 265 | * Reads the channel buffer and returns object of SrEroSubObject.
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| 266 | * @param c of type channel buffer
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| 267 | * @return object of SrEroSubObject
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| 268 | */
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| 269 | public static PcepValueType read(ChannelBuffer c) {
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| 270 | short temp = c.readShort();
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| 271 | boolean bMFlag;
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| 272 | boolean bCFlag;
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| 273 | boolean bSFlag;
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| 274 | boolean bFFlag;
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| 275 | byte st;
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| 276 | PcepNai nai = null;
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| 277 |
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| 278 | bMFlag = (temp & MFLAG_SET) == MFLAG_SET ? true : false;
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| 279 | bCFlag = (temp & CFLAG_SET) == CFLAG_SET ? true : false;
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| 280 | bSFlag = (temp & SFLAG_SET) == SFLAG_SET ? true : false;
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| 281 | bFFlag = (temp & FFLAG_SET) == FFLAG_SET ? true : false;
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| 282 |
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| 283 | st = (byte) (temp >> SHIFT_ST);
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| 284 |
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| 285 | int sID = c.readInt();
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| 286 | switch (st) {
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| 287 | case 0x01:
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| 288 | nai = PcepNaiIpv4NodeId.read(c);
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| 289 | break;
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| 290 | case 0x02:
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| 291 | nai = PcepNaiIpv6NodeId.read(c);
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| 292 | break;
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| 293 | case 0x03:
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| 294 | nai = PcepNaiIpv4Adjacency.read(c);
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| 295 | break;
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| 296 | case 0x04:
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| 297 | nai = PcepNaiIpv6Adjacency.read(c);
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| 298 | break;
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| 299 | case 0x05:
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| 300 | nai = PcepNaiUnnumberedAdjacencyIpv4.read(c);
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| 301 | break;
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| 302 | default:
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| 303 | nai = null;
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| 304 | break;
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| 305 | }
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| 306 |
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| 307 | return new SrEroSubObject(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai);
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| 308 | }
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| 309 |
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| 310 | @Override
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bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 311 | public String toString() {
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| 312 | return MoreObjects.toStringHelper(getClass())
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| 313 | .add("Type", TYPE)
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| 314 | .add("Length", LENGTH)
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| 315 | .add("st", st)
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| 316 | .add("bFflag", bFFlag)
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| 317 | .add("bSFlag", bSFlag)
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| 318 | .add("bCFlag", bCFlag)
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| 319 | .add("bMFlag", bMFlag)
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| 320 | .add("sID", sID)
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| 321 | .add("nAI", nai)
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| 322 | .toString();
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| 323 | }
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bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 324 | }
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