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.protocol.ver1;
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| 18 |
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| 19 | import java.util.LinkedList;
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| 20 | import java.util.ListIterator;
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| 21 |
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| 22 | import org.jboss.netty.buffer.ChannelBuffer;
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| 23 | import org.onosproject.pcepio.exceptions.PcepParseException;
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| 24 | import org.onosproject.pcepio.protocol.PcepLspaObject;
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| 25 | import org.onosproject.pcepio.types.PcepObjectHeader;
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| 26 | import org.onosproject.pcepio.types.PcepValueType;
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| 27 | import org.slf4j.Logger;
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| 28 | import org.slf4j.LoggerFactory;
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| 29 |
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| 30 | import com.google.common.base.MoreObjects;
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| 31 |
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Phanendra Manda | 51fb9c2 | 2015-09-01 16:17:41 +0530 | [diff] [blame] | 32 | /**
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| 33 | * Provides PCEP label Object .
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| 34 | */
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bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 35 | public class PcepLspaObjectVer1 implements PcepLspaObject {
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| 36 |
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| 37 | /* LSPA Object Body Format
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| 38 |
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| 39 | 0 1 2 3
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| 40 | 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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| 41 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 42 | | Exclude-any |
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| 43 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 44 | | Include-any |
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| 45 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 46 | | Include-all |
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| 47 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 48 | | Setup Prio | Holding Prio | Flags |L| Reserved |
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| 49 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 50 | | |
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| 51 | | Optional TLVs |
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| 52 | | |
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| 53 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 54 | */
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| 55 |
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| 56 | protected static final Logger log = LoggerFactory.getLogger(PcepLspaObjectVer1.class);
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| 57 |
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| 58 | public static final byte LSPA_OBJ_TYPE = 1;
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| 59 | public static final byte LSPA_OBJ_CLASS = 9;
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| 60 | public static final byte LSPA_OBJECT_VERSION = 1;
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| 61 | public static final short LSPA_OBJ_MINIMUM_LENGTH = 20;
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| 62 | public static final int OBJECT_HEADER_LENGTH = 4;
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| 63 |
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| 64 | static final PcepObjectHeader DEFAULT_LSPA_OBJECT_HEADER = new PcepObjectHeader(LSPA_OBJ_CLASS, LSPA_OBJ_TYPE,
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| 65 | PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED, LSPA_OBJ_MINIMUM_LENGTH);
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| 66 |
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| 67 | public static final int SETUP_PRIORITY_SHIFT_VALUE = 24;
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| 68 | public static final int HOLD_PRIORITY_SHIFT_VALUE = 16;
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| 69 | public static final int BFLAG_SHIFT_VALUE = 8;
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| 70 | public static final int LFLAG_SET = 1;
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| 71 | public static final int LFLAG_RESET = 0;
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| 72 | private PcepObjectHeader lspaObjHeader;
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| 73 | private int iExcludeAny;
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| 74 | private int iIncludeAny;
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| 75 | private int iIncludeAll;
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| 76 | private byte cSetupPriority;
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| 77 | private byte cHoldPriority;
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bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 78 | private boolean bLFlag;
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| 79 | private LinkedList<PcepValueType> llOptionalTlv; //Optional TLV
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| 80 |
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| 81 | /**
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| 82 | * Constructor to initialize member variables.
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| 83 | *
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| 84 | * @param lspaObjHeader lspa object header
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| 85 | * @param bLFlag b l flag
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| 86 | * @param iExcludeAny excludeAny value
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| 87 | * @param iIncludeAny includeAny value
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| 88 | * @param iIncludeAll includeAll value
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| 89 | * @param cSetupPriority setup priority value
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| 90 | * @param cHoldPriority hold priority value
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| 91 | * @param llOptionalTlv list of optional tlv
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| 92 | */
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| 93 | public PcepLspaObjectVer1(PcepObjectHeader lspaObjHeader, boolean bLFlag, int iExcludeAny, int iIncludeAny,
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| 94 | int iIncludeAll, byte cSetupPriority, byte cHoldPriority, LinkedList<PcepValueType> llOptionalTlv) {
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| 95 |
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| 96 | this.lspaObjHeader = lspaObjHeader;
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| 97 | this.bLFlag = bLFlag;
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| 98 | this.iExcludeAny = iExcludeAny;
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| 99 | this.iIncludeAny = iIncludeAny;
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| 100 | this.iIncludeAll = iIncludeAll;
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| 101 | this.cSetupPriority = cSetupPriority;
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| 102 | this.cHoldPriority = cHoldPriority;
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| 103 | this.llOptionalTlv = llOptionalTlv;
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| 104 | }
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| 105 |
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| 106 | /**
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| 107 | * Sets Object Header.
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| 108 | *
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| 109 | * @param obj lspa object header
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| 110 | */
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| 111 | public void setLspaObjHeader(PcepObjectHeader obj) {
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| 112 | this.lspaObjHeader = obj;
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| 113 | }
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| 114 |
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| 115 | @Override
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| 116 | public void setExcludeAny(int iExcludeAny) {
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| 117 | this.iExcludeAny = iExcludeAny;
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| 118 | }
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| 119 |
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| 120 | @Override
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| 121 | public void setIncludeAny(int iIncludeAny) {
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| 122 | this.iIncludeAny = iIncludeAny;
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| 123 | }
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| 124 |
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| 125 | @Override
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| 126 | public void setSetupPriority(byte cSetupPriority) {
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| 127 | this.cSetupPriority = cSetupPriority;
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| 128 | }
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| 129 |
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| 130 | @Override
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| 131 | public void setHoldPriority(byte cHoldPriority) {
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| 132 | this.cHoldPriority = cHoldPriority;
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| 133 | }
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| 134 |
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| 135 | @Override
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| 136 | public void setLFlag(boolean bLFlag) {
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| 137 | this.bLFlag = bLFlag;
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| 138 | }
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| 139 |
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| 140 | /**
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| 141 | * Returns lspa Object Header.
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| 142 | *
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| 143 | * @return lspa Object Header
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| 144 | */
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| 145 | public PcepObjectHeader getLspaObjHeader() {
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| 146 | return this.lspaObjHeader;
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| 147 | }
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| 148 |
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| 149 | @Override
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| 150 | public int getExcludeAny() {
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| 151 | return this.iExcludeAny;
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| 152 | }
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| 153 |
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| 154 | @Override
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| 155 | public int getIncludeAny() {
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| 156 | return this.iIncludeAny;
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| 157 | }
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| 158 |
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| 159 | @Override
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| 160 | public int getIncludeAll() {
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| 161 | return this.iIncludeAll;
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| 162 | }
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| 163 |
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| 164 | @Override
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| 165 | public byte getSetupPriority() {
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| 166 | return this.cSetupPriority;
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| 167 | }
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| 168 |
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| 169 | @Override
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| 170 | public byte getHoldPriority() {
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| 171 | return this.cHoldPriority;
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| 172 | }
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| 173 |
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| 174 | @Override
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| 175 | public boolean getLFlag() {
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| 176 | return this.bLFlag;
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| 177 | }
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| 178 |
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| 179 | @Override
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| 180 | public void setIncludeAll(int value) {
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| 181 | this.iIncludeAll = value;
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| 182 |
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| 183 | }
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| 184 |
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| 185 | @Override
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| 186 | public LinkedList<PcepValueType> getOptionalTlv() {
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| 187 | return this.llOptionalTlv;
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| 188 | }
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| 189 |
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| 190 | @Override
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| 191 | public void setOptionalTlv(LinkedList<PcepValueType> llOptionalTlv) {
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| 192 | this.llOptionalTlv = llOptionalTlv;
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| 193 |
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| 194 | }
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| 195 |
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| 196 | /**
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| 197 | * Reads channel buffer and returns object of PcepLspaObject.
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| 198 | *
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| 199 | * @param cb of type channel buffer.
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| 200 | * @return object of PcepLspaObject
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| 201 | * @throws PcepParseException while parsing lspa object from channel buffer
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| 202 | */
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| 203 | public static PcepLspaObject read(ChannelBuffer cb) throws PcepParseException {
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| 204 |
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| 205 | log.debug("LspaObject::read");
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| 206 | PcepObjectHeader lspaObjHeader;
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| 207 | int iExcludeAny;
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| 208 | int iIncludeAny;
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| 209 | int iIncludeAll;
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| 210 | byte cSetupPriority;
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| 211 | byte cHoldPriority;
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| 212 | boolean bLFlag;
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| 213 | byte flags;
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| 214 |
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| 215 | // Optional TLV
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| 216 | LinkedList<PcepValueType> llOptionalTlv;
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| 217 |
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| 218 | lspaObjHeader = PcepObjectHeader.read(cb);
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| 219 |
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| 220 | //take only Lspa Object buffer.
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| 221 | ChannelBuffer tempCb = cb.readBytes(lspaObjHeader.getObjLen() - OBJECT_HEADER_LENGTH);
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| 222 | iExcludeAny = tempCb.readInt();
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| 223 | iIncludeAny = tempCb.readInt();
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| 224 | iIncludeAll = tempCb.readInt();
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| 225 | cSetupPriority = tempCb.readByte();
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| 226 | cHoldPriority = tempCb.readByte();
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| 227 | flags = tempCb.readByte();
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| 228 | tempCb.readByte();
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| 229 |
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| 230 | bLFlag = (flags & (byte) LFLAG_SET) == LFLAG_SET ? true : false;
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| 231 |
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| 232 | llOptionalTlv = parseOptionalTlv(tempCb);
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| 233 |
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| 234 | return new PcepLspaObjectVer1(lspaObjHeader, bLFlag, iExcludeAny, iIncludeAny, iIncludeAll, cSetupPriority,
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| 235 | cHoldPriority, llOptionalTlv);
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| 236 | }
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| 237 |
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| 238 | @Override
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| 239 | public int write(ChannelBuffer cb) throws PcepParseException {
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| 240 |
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| 241 | //write Object header
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| 242 | int objStartIndex = cb.writerIndex();
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| 243 |
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| 244 | int objLenIndex = lspaObjHeader.write(cb);
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| 245 |
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| 246 | if (objLenIndex <= 0) {
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| 247 | throw new PcepParseException("Failed to write lspa object header. Index " + objLenIndex);
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| 248 | }
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| 249 |
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| 250 | cb.writeInt(iExcludeAny);
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| 251 | cb.writeInt(iIncludeAny);
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| 252 | cb.writeInt(iIncludeAll);
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| 253 |
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| 254 | int iTemp = cSetupPriority << SETUP_PRIORITY_SHIFT_VALUE;
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| 255 | iTemp = iTemp | (cHoldPriority << HOLD_PRIORITY_SHIFT_VALUE);
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| 256 | byte bFlag;
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| 257 | bFlag = (bLFlag) ? (byte) LFLAG_SET : LFLAG_RESET;
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| 258 | iTemp = iTemp | (bFlag << BFLAG_SHIFT_VALUE);
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| 259 | cb.writeInt(iTemp);
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| 260 |
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| 261 | // Add optional TLV
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| 262 | if (!packOptionalTlv(cb)) {
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| 263 | throw new PcepParseException("Faild to write lspa objects tlv to channel buffer");
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| 264 | }
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| 265 |
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| 266 | short length = (short) (cb.writerIndex() - objStartIndex);
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| 267 |
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| 268 | lspaObjHeader.setObjLen(length); //will be helpful during print().
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| 269 |
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| 270 | //As per RFC the length of object should be multiples of 4
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| 271 | short pad = (short) (length % 4);
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| 272 |
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| 273 | if (pad != 0) {
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| 274 | pad = (short) (4 - pad);
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| 275 | for (int i = 0; i < pad; i++) {
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| 276 | cb.writeByte((byte) 0);
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| 277 | }
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| 278 | length = (short) (length + pad);
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| 279 | }
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| 280 | cb.setShort(objLenIndex, length);
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| 281 | return cb.writerIndex();
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| 282 | }
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| 283 |
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| 284 | /**
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| 285 | * Parse list of optional tlvs.
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| 286 | *
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| 287 | * @param cb channel buffer
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| 288 | * @return list of optional tlvs.
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| 289 | * @throws PcepParseException when fails to parse optional tlv list.
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| 290 | */
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| 291 | public static LinkedList<PcepValueType> parseOptionalTlv(ChannelBuffer cb) throws PcepParseException {
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| 292 |
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| 293 | LinkedList<PcepValueType> llOutOptionalTlv = new LinkedList<PcepValueType>();
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| 294 |
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| 295 | return llOutOptionalTlv;
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| 296 | }
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| 297 |
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| 298 | /**
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| 299 | * Writes optional tlvs to channel buffer.
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| 300 | *
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| 301 | * @param cb channel buffer
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| 302 | * @return true
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| 303 | */
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| 304 | protected boolean packOptionalTlv(ChannelBuffer cb) {
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| 305 | int hTlvType;
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| 306 | int hTlvLength;
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| 307 |
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| 308 | ListIterator<PcepValueType> listIterator = llOptionalTlv.listIterator();
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| 309 | while (listIterator.hasNext()) {
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| 310 | PcepValueType tlv = listIterator.next();
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| 311 | if (null == tlv) {
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| 312 | log.debug("Warning: tlv is null from OptionalTlv list");
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| 313 | continue;
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| 314 | }
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| 315 | hTlvType = tlv.getType();
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| 316 | hTlvLength = tlv.getLength();
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| 317 | if (0 == hTlvLength) {
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| 318 | log.debug("Warning: invalid length in tlv of OptionalTlv list");
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| 319 | continue;
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| 320 | }
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| 321 |
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| 322 | cb.writeShort(hTlvType);
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| 323 | cb.writeShort(hTlvLength);
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| 324 |
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| 325 | switch (hTlvType) {
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| 326 | //TODO: optional TLV for LSPA to be added
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| 327 |
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| 328 | default:
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| 329 | log.debug("Warning: PcepLspaObject: unknown tlv");
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| 330 | }
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| 331 |
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| 332 | // As per RFC the length of object should
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| 333 | // be multiples of 4
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| 334 | int pad = hTlvLength % 4;
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| 335 |
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| 336 | if (0 < pad) {
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| 337 | pad = 4 - pad;
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| 338 | if (pad <= cb.readableBytes()) {
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| 339 | cb.skipBytes(pad);
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| 340 | }
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| 341 | }
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| 342 | }
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| 343 | return true;
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| 344 | }
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| 345 |
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| 346 | /**
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Phanendra Manda | 51fb9c2 | 2015-09-01 16:17:41 +0530 | [diff] [blame] | 347 | * Builder class for PCEP lspa object.
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bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 348 | */
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| 349 | public static class Builder implements PcepLspaObject.Builder {
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| 350 | private boolean bIsHeaderSet = false;
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| 351 |
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| 352 | private PcepObjectHeader lspaObjHeader;
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| 353 |
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| 354 | private boolean bLFlag;
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| 355 | private int iExcludeAny;
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| 356 | private boolean bIsExcludeAnySet = false;
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| 357 | private int iIncludeAny;
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| 358 | private boolean bIsIncludeAnySet = false;
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| 359 | private int iIncludeAll;
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| 360 | private boolean bIsIncludeAllSet = false;
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| 361 | private byte cSetupPriority;
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| 362 | private boolean bIsSetupPrioritySet = false;
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| 363 | private byte cHoldPriority;
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| 364 | private boolean bIsHoldPrioritySet = false;
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| 365 | private LinkedList<PcepValueType> llOptionalTlv;
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| 366 |
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| 367 | private boolean bIsPFlagSet = false;
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| 368 | private boolean bPFlag;
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| 369 |
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| 370 | private boolean bIsIFlagSet = false;
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| 371 | private boolean bIFlag;
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| 372 |
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| 373 | @Override
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| 374 | public PcepLspaObject build() throws PcepParseException {
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| 375 |
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| 376 | PcepObjectHeader lspaObjHeader = this.bIsHeaderSet ? this.lspaObjHeader : DEFAULT_LSPA_OBJECT_HEADER;
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| 377 |
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| 378 | if (!this.bIsExcludeAnySet) {
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| 379 | throw new PcepParseException("ExcludeAny NOT Set while building PcepLspaObject.");
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| 380 | }
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| 381 | if (!this.bIsIncludeAnySet) {
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| 382 | throw new PcepParseException("IncludeAny NOT Set while building PcepLspaObject.");
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| 383 | }
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| 384 | if (!this.bIsIncludeAllSet) {
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| 385 | throw new PcepParseException("IncludeAll NOT Set while building PcepLspaObject.");
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| 386 | }
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| 387 | if (!this.bIsSetupPrioritySet) {
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| 388 | throw new PcepParseException("Setup Priority NOT Set while building PcepLspaObject.");
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| 389 | }
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| 390 | if (!this.bIsHoldPrioritySet) {
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| 391 | throw new PcepParseException("Hold Priority NOT Set while building PcepLspaObject.");
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| 392 | }
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| 393 |
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| 394 | if (bIsPFlagSet) {
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| 395 | lspaObjHeader.setPFlag(bPFlag);
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| 396 | }
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| 397 |
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| 398 | if (bIsIFlagSet) {
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| 399 | lspaObjHeader.setIFlag(bIFlag);
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| 400 | }
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| 401 |
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| 402 | return new PcepLspaObjectVer1(lspaObjHeader, bLFlag, iExcludeAny, iIncludeAny, iIncludeAll, cSetupPriority,
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| 403 | cHoldPriority, llOptionalTlv);
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| 404 | }
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| 405 |
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| 406 | @Override
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| 407 | public PcepObjectHeader getLspaObjHeader() {
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| 408 | return this.lspaObjHeader;
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| 409 | }
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| 410 |
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| 411 | @Override
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| 412 | public Builder setLspaObjHeader(PcepObjectHeader obj) {
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| 413 | this.lspaObjHeader = obj;
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| 414 | this.bIsHeaderSet = true;
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| 415 | return this;
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| 416 | }
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| 417 |
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| 418 | @Override
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| 419 | public boolean getLFlag() {
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| 420 | return this.bLFlag;
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| 421 | }
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| 422 |
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| 423 | @Override
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| 424 | public Builder setLFlag(boolean value) {
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| 425 | this.bLFlag = value;
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| 426 | return this;
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| 427 | }
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| 428 |
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| 429 | @Override
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| 430 | public int getExcludeAny() {
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| 431 | return this.iExcludeAny;
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| 432 | }
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| 433 |
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| 434 | @Override
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| 435 | public Builder setExcludeAny(int value) {
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| 436 | this.iExcludeAny = value;
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| 437 | this.bIsExcludeAnySet = true;
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| 438 | return this;
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| 439 | }
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| 440 |
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| 441 | @Override
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| 442 | public int getIncludeAny() {
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| 443 | return this.iIncludeAny;
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| 444 | }
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| 445 |
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| 446 | @Override
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| 447 | public Builder setIncludeAny(int value) {
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| 448 | this.iIncludeAny = value;
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| 449 | this.bIsIncludeAnySet = true;
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| 450 | return this;
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| 451 | }
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| 452 |
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| 453 | @Override
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| 454 | public int getIncludeAll() {
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| 455 | return this.iIncludeAll;
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| 456 | }
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| 457 |
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| 458 | @Override
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| 459 | public Builder setIncludeAll(int value) {
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| 460 | this.iIncludeAll = value;
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| 461 | this.bIsIncludeAllSet = true;
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| 462 | return this;
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| 463 | }
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| 464 |
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| 465 | @Override
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| 466 | public byte getSetupPriority() {
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| 467 | return this.cSetupPriority;
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| 468 | }
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| 469 |
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| 470 | @Override
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| 471 | public Builder setSetupPriority(byte value) {
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| 472 | this.cSetupPriority = value;
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| 473 | this.bIsSetupPrioritySet = true;
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| 474 | return this;
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| 475 | }
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| 476 |
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| 477 | @Override
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| 478 | public byte getHoldPriority() {
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| 479 | return this.cHoldPriority;
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| 480 | }
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| 481 |
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| 482 | @Override
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| 483 | public Builder setHoldPriority(byte value) {
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| 484 | this.cHoldPriority = value;
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| 485 | this.bIsHoldPrioritySet = true;
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| 486 | return this;
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| 487 | }
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| 488 |
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| 489 | @Override
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| 490 | public LinkedList<PcepValueType> getOptionalTlv() {
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| 491 | return this.llOptionalTlv;
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| 492 | }
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| 493 |
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| 494 | @Override
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| 495 | public Builder setOptionalTlv(LinkedList<PcepValueType> llOptionalTlv) {
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| 496 | this.llOptionalTlv = llOptionalTlv;
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| 497 |
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| 498 | return this;
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| 499 | }
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| 500 |
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| 501 | @Override
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| 502 | public Builder setPFlag(boolean value) {
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| 503 | this.bPFlag = value;
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| 504 | this.bIsPFlagSet = true;
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| 505 | return this;
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| 506 | }
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| 507 |
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| 508 | @Override
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| 509 | public Builder setIFlag(boolean value) {
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| 510 | this.bIFlag = value;
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| 511 | this.bIsIFlagSet = true;
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| 512 | return this;
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| 513 | }
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| 514 |
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| 515 | }
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| 516 |
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| 517 | @Override
|
bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 518 | public String toString() {
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bharat saraswal | e180630 | 2015-08-21 12:16:46 +0530 | [diff] [blame] | 519 | return MoreObjects.toStringHelper(getClass()).add("LFlag", bLFlag).add("SetupPriority", cSetupPriority)
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| 520 | .add("HoldPriority", cHoldPriority).add("IncludeAll", iIncludeAll).add("IncludeAny", iIncludeAny)
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| 521 | .add("ExcludeAny", iExcludeAny).add("OptionalTlvList", llOptionalTlv).toString();
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bharat saraswal | f7364db | 2015-08-11 13:39:31 +0530 | [diff] [blame] | 522 | }
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| 523 | }
|