pce/src/main/java/org/opendaylight/transportpce/pce/gnpy/GnpyServiceImpl.java

   1 /*
   2  * Copyright © 2019 Orange, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.transportpce.pce.gnpy;
  10
  11 import com.google.common.collect.HashBasedTable;
  12 import com.google.common.collect.Table;
  13 import java.math.BigDecimal;
  14 import java.math.RoundingMode;
  15 import java.util.ArrayList;
  16 import java.util.Collection;
  17 import java.util.Collections;
  18 import java.util.HashMap;
  19 import java.util.HashSet;
  20 import java.util.Iterator;
  21 import java.util.List;
  22 import java.util.Map;
  23 import java.util.Optional;
  24 import java.util.Set;
  25 import org.eclipse.jdt.annotation.NonNull;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.opendaylight.transportpce.common.ServiceRateConstant;
  28 import org.opendaylight.transportpce.common.fixedflex.GridConstant;
  29 import org.opendaylight.transportpce.common.fixedflex.GridUtils;
  30 import org.opendaylight.transportpce.pce.constraints.PceConstraints;
  31 import org.opendaylight.transportpce.pce.constraints.PceConstraints.ResourcePair;
  32 import org.opendaylight.transportpce.pce.gnpy.utils.AToZComparator;
  33 import org.opendaylight.transportpce.pce.gnpy.utils.ZToAComparator;
  34 import org.opendaylight.yang.gen.v1.gnpy.gnpy.network.topology.rev220615.topo.Elements;
  35 import org.opendaylight.yang.gen.v1.gnpy.gnpy.network.topology.rev220615.topo.ElementsKey;
  36 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.RouteIncludeEro;
  37 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.TeHopType;
  38 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.TePathDisjointness;
  39 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.common.constraints_config.TeBandwidth;
  40 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.common.constraints_config.TeBandwidthBuilder;
  41 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.explicit.route.hop.Type;
  42 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.explicit.route.hop.type.NumUnnumHopBuilder;
  43 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.explicit.route.hop.type.num.unnum.hop.NumUnnumHop;
  44 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.generic.path.constraints.PathConstraints;
  45 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.generic.path.constraints.PathConstraintsBuilder;
  46 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.gnpy.specific.parameters.EffectiveFreqSlot;
  47 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.gnpy.specific.parameters.EffectiveFreqSlotBuilder;
  48 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.path.route.objects.ExplicitRouteObjects;
  49 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.path.route.objects.ExplicitRouteObjectsBuilder;
  50 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.path.route.objects.explicit.route.objects.RouteObjectIncludeExclude;
  51 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.path.route.objects.explicit.route.objects.RouteObjectIncludeExcludeBuilder;
  52 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.path.route.objects.explicit.route.objects.RouteObjectIncludeExcludeKey;
  53 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.service.PathRequest;
  54 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.service.PathRequestBuilder;
  55 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.service.PathRequestKey;
  56 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.synchronization.info.Synchronization;
  57 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.synchronization.info.SynchronizationBuilder;
  58 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.synchronization.info.synchronization.Svec;
  59 import org.opendaylight.yang.gen.v1.gnpy.path.rev220615.synchronization.info.synchronization.SvecBuilder;
  60 import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev220615.PathComputationRequestInput;
  61 import org.opendaylight.yang.gen.v1.http.org.openroadm.common.optical.channel.types.rev211210.FrequencyTHz;
  62 import org.opendaylight.yang.gen.v1.http.org.openroadm.common.types.rev181019.ModulationFormat;
  63 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705.path.description.AToZDirection;
  64 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705.path.description.ZToADirection;
  65 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705.path.description.atoz.direction.AToZ;
  66 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705.path.description.ztoa.direction.ZToA;
  67 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705.pce.resource.resource.Resource;
  68 import org.opendaylight.yangtools.yang.common.Decimal64;
  69 import org.opendaylight.yangtools.yang.common.Uint32;
  70 import org.slf4j.Logger;
  71 import org.slf4j.LoggerFactory;
  72
  73
  74 /**
  75  * Class to create the service corresponding to GNPy requirements.
  76  *
  77  * @author Ahmed Triki ( ahmed.triki@orange.com )
  78  *
  79  */
  80
  81 public class GnpyServiceImpl {
  82     private static final Logger LOG = LoggerFactory.getLogger(GnpyServiceImpl.class);
  83
  84     private Map<PathRequestKey, PathRequest> pathRequest = new HashMap<>();
  85     private List<Synchronization> synchronization = new ArrayList<>();
  86     private Map<String, String> mapDisgNodeRefNode = new HashMap<>();
  87     private Map<String, List<String>> mapLinkFiber = new HashMap<>();
  88     private List<String> trxList = new ArrayList<>();
  89     private Map<ElementsKey, Elements> elements = new HashMap<>();
  90     private Map<RouteObjectIncludeExcludeKey, RouteObjectIncludeExclude> routeObjectIncludeExcludes = new HashMap<>();
  91     private String currentNodeId = null;
  92     private AToZComparator atoZComparator =  new AToZComparator();
  93     private ZToAComparator ztoAComparator =  new ZToAComparator();
  94     private static final Table<Uint32, BigDecimal, String> TRX_MODE_TABLE = initTrxModeTable();
  95
  96     private static Table<Uint32, BigDecimal, String> initTrxModeTable() {
  97         Table<Uint32, BigDecimal, String> trxModeTable = HashBasedTable.create();
  98         trxModeTable.put(ServiceRateConstant.RATE_100, GridConstant.SLOT_WIDTH_50, "100 Gbit/s, 27.95 Gbaud, DP-QPSK");
  99         trxModeTable.put(ServiceRateConstant.RATE_200, GridConstant.SLOT_WIDTH_50, "200 Gbit/s, 31.57 Gbaud, DP-16QAM");
 100         trxModeTable.put(ServiceRateConstant.RATE_200, GridConstant.SLOT_WIDTH_87_5, "200 Gbit/s, DP-QPSK");
 101         trxModeTable.put(ServiceRateConstant.RATE_300, GridConstant.SLOT_WIDTH_87_5, "300 Gbit/s, DP-8QAM");
 102         trxModeTable.put(ServiceRateConstant.RATE_400, GridConstant.SLOT_WIDTH_87_5, "400 Gbit/s, DP-16QAM");
 103         return trxModeTable;
 104     }
 105
 106     public static final Map<Uint32, BigDecimal> RATE_OUTPUTPOWER = Map.of(
 107             ServiceRateConstant.RATE_100, GridConstant.OUTPUT_POWER_100GB_W,
 108             ServiceRateConstant.RATE_400, GridConstant.OUTPUT_POWER_400GB_W);
 109
 110     /*
 111      * Construct the GnpyServiceImpl
 112      */
 113     public GnpyServiceImpl(PathComputationRequestInput input, AToZDirection atoz, Uint32 requestId,
 114                 GnpyTopoImpl gnpyTopo, PceConstraints pceHardConstraints) throws GnpyException {
 115         this.elements = gnpyTopo.getElements();
 116         this.mapDisgNodeRefNode = gnpyTopo.getMapDisgNodeRefNode();
 117         this.mapLinkFiber = gnpyTopo.getMapLinkFiber();
 118         this.trxList = gnpyTopo.getTrxList();
 119         this.pathRequest = extractPathRequest(input, atoz, requestId.toJava(), pceHardConstraints);
 120         this.synchronization = extractSynchronization(requestId);
 121     }
 122
 123     public GnpyServiceImpl(PathComputationRequestInput input, ZToADirection ztoa, Uint32 requestId,
 124                 GnpyTopoImpl gnpyTopo, PceConstraints pceHardConstraints) throws GnpyException {
 125         this.elements = gnpyTopo.getElements();
 126         this.mapDisgNodeRefNode = gnpyTopo.getMapDisgNodeRefNode();
 127         this.mapLinkFiber = gnpyTopo.getMapLinkFiber();
 128         this.trxList = gnpyTopo.getTrxList();
 129         pathRequest = extractPathRequest(input, ztoa, requestId.toJava(), pceHardConstraints);
 130         synchronization = extractSynchronization(requestId);
 131     }
 132
 133     private Map<PathRequestKey, PathRequest> extractPathRequest(
 134             PathComputationRequestInput input, AToZDirection atoz, Long requestId,
 135             PceConstraints pceHardConstraints) throws GnpyException {
 136
 137         // Create the source and destination nodes
 138         String sourceNode = input.getServiceAEnd().getNodeId();
 139         String destNode = input.getServiceZEnd().getNodeId();
 140         if (!trxList.contains(sourceNode) || !trxList.contains(destNode)) {
 141             throw new GnpyException("In GnpyServiceImpl: source and destination should be transmitter nodes");
 142         }
 143
 144         // Create explicitRouteObjects
 145         List<AToZ> listAtoZ = new ArrayList<>(atoz.nonnullAToZ().values());
 146         if (listAtoZ.isEmpty()) {
 147             extractHardConstraints(pceHardConstraints);
 148         } else {
 149             Collections.sort(listAtoZ, atoZComparator);
 150             extractRouteObjectIcludeAtoZ(listAtoZ);
 151         }
 152
 153         ExplicitRouteObjects explicitRouteObjects = new ExplicitRouteObjectsBuilder()
 154             .setRouteObjectIncludeExclude(routeObjectIncludeExcludes).build();
 155         //Create Path Constraint
 156         PathConstraints pathConstraints = createPathConstraints(atoz.getRate().toJava(),
 157                 atoz.getModulationFormat(),
 158                 atoz.getAToZMinFrequency(),
 159                 atoz.getAToZMaxFrequency());
 160
 161         // Create the path request
 162         Map<PathRequestKey, PathRequest> pathRequestMap = new HashMap<>();
 163         PathRequest pathRequestEl = new PathRequestBuilder().setRequestId(requestId.toString())
 164             .setSource(sourceNode)
 165             .setDestination(destNode)
 166             .setSrcTpId(sourceNode)
 167             .setDstTpId(destNode)
 168             .setBidirectional(false).setPathConstraints(pathConstraints).setPathConstraints(pathConstraints)
 169             .setExplicitRouteObjects(explicitRouteObjects).build();
 170         pathRequestMap.put(pathRequestEl.key(),pathRequestEl);
 171         LOG.debug("In GnpyServiceImpl: path request AToZ is extracted");
 172         return pathRequestMap;
 173     }
 174
 175     private Map<PathRequestKey, PathRequest> extractPathRequest(
 176             PathComputationRequestInput input, ZToADirection ztoa, Long requestId,
 177             PceConstraints pceHardConstraints) throws GnpyException {
 178         // Create the source and destination nodes
 179         String sourceNode = input.getServiceZEnd().getNodeId();
 180         String destNode = input.getServiceAEnd().getNodeId();
 181         if (!trxList.contains(sourceNode) || !trxList.contains(destNode)) {
 182             throw new GnpyException("In GnpyServiceImpl: source and destination should be transmitter nodes");
 183         }
 184         // Create explicitRouteObjects
 185         @NonNull List<ZToA> listZtoA = new ArrayList<>(ztoa.nonnullZToA().values());
 186         if (listZtoA.isEmpty()) {
 187             extractHardConstraints(pceHardConstraints);
 188         } else {
 189             Collections.sort(listZtoA, ztoAComparator);
 190             extractRouteObjectIcludeZtoA(listZtoA);
 191         }
 192
 193         ExplicitRouteObjects explicitRouteObjects = new ExplicitRouteObjectsBuilder()
 194             .setRouteObjectIncludeExclude(routeObjectIncludeExcludes).build();
 195         //Create Path Constraint
 196         PathConstraints pathConstraints = createPathConstraints(ztoa.getRate().toJava(),
 197                 ztoa.getModulationFormat(),
 198                 ztoa.getZToAMinFrequency(),
 199                 ztoa.getZToAMaxFrequency());
 200
 201         //Create the path request
 202         Map<PathRequestKey, PathRequest> pathRequestMap = new HashMap<>();
 203         PathRequest pathRequestEl = new PathRequestBuilder().setRequestId(requestId.toString())
 204             .setSource(sourceNode)
 205             .setDestination(destNode)
 206             .setSrcTpId(sourceNode)
 207             .setDstTpId(destNode)
 208             .setBidirectional(false).setPathConstraints(pathConstraints)
 209             .setExplicitRouteObjects(explicitRouteObjects).build();
 210         pathRequestMap.put(pathRequestEl.key(),pathRequestEl);
 211         LOG.debug("In GnpyServiceImpl: path request ZToA is extracted is extracted");
 212         return pathRequestMap;
 213     }
 214
 215     //Extract RouteObjectIncludeExclude list in the case of pre-computed path A-to-Z
 216     private void extractRouteObjectIcludeAtoZ(Collection<AToZ> listAtoZ) throws GnpyException {
 217         Long index = 0L;
 218         for (AToZ entry : listAtoZ) {
 219             index = createResource(entry.getResource().getResource(),index);
 220         }
 221     }
 222
 223     //Extract RouteObjectIncludeExclude list in the case of pre-computed path Z-to-A
 224     private void extractRouteObjectIcludeZtoA(@NonNull List<ZToA> listZtoA) throws GnpyException {
 225         Long index = 0L;
 226         for (ZToA entry : listZtoA) {
 227             index = createResource(entry.getResource().getResource(),index);
 228         }
 229     }
 230
 231     //Create a new resource node or link
 232     private Long createResource(@Nullable Resource resource, Long index) throws GnpyException {
 233         Long idx = index;
 234         if (resource
 235             instanceof
 236                 org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705
 237                     .pce.resource.resource.resource.Node) {
 238             org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705
 239                 .pce.resource.resource.resource.Node node =
 240                 (org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705
 241                     .pce.resource.resource.resource.Node) resource;
 242             if (node.getNodeId() == null) {
 243                 throw new GnpyException("In gnpyServiceImpl: nodeId is null");
 244             }
 245             idx = addNodeToRouteObject(this.mapDisgNodeRefNode.get(node.getNodeId()),idx);
 246         }
 247
 248         if (resource
 249             instanceof
 250                 org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705
 251                     .pce.resource.resource.resource.Link) {
 252             org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705
 253                 .pce.resource.resource.resource.Link link =
 254                 (org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705
 255                     .pce.resource.resource.resource.Link) resource;
 256             idx = addLinkToRouteObject(link.getLinkId(),idx);
 257         }
 258         return idx;
 259     }
 260
 261     //Create RouteObjectIncludeExclude list in the case of hard constraint
 262     private void extractHardConstraints(PceConstraints pceHardConstraints) throws GnpyException {
 263         List<String> listNodeToInclude = getListToInclude(pceHardConstraints);
 264         if (!listNodeToInclude.isEmpty()) {
 265             Long index = 0L;
 266             for (int i = 0; i < listNodeToInclude.size(); i++) {
 267                 String nodeId = listNodeToInclude.get(i);
 268                 index = addNodeToRouteObject(nodeId, index);
 269             }
 270         }
 271     }
 272
 273     //Create the list of nodes to include
 274     private List<String> getListToInclude(PceConstraints pceHardConstraints) {
 275         List<String> listNodeToInclude = new ArrayList<>();
 276         if (pceHardConstraints != null) {
 277             List<ResourcePair> listToInclude = pceHardConstraints.getListToInclude();
 278             Iterator<ResourcePair> it = listToInclude.iterator();
 279             while (it.hasNext()) {
 280                 ResourcePair rs = it.next();
 281                 if (rs.getType().name().equals("NODE")) {
 282                     listNodeToInclude.add(rs.getName());
 283                 }
 284             }
 285         }
 286         return listNodeToInclude;
 287     }
 288
 289     //Add a node to the route object
 290     private Long addNodeToRouteObject(String nodeRef, Long index) throws GnpyException {
 291         Long idx = index;
 292         for (Elements element : this.elements.values()) {
 293             if (element.getUid().equals(nodeRef)) {
 294                 if ((this.currentNodeId == null) || (!this.currentNodeId.equals(nodeRef))) {
 295                     this.currentNodeId = nodeRef;
 296                     RouteObjectIncludeExclude routeObjectIncludeExclude = addRouteObjectIncludeExclude(nodeRef,
 297                             Uint32.valueOf(1), idx);
 298                     RouteObjectIncludeExcludeKey key = new RouteObjectIncludeExcludeKey(Uint32.valueOf(idx));
 299                     routeObjectIncludeExcludes.put(key, routeObjectIncludeExclude);
 300                     idx += 1;
 301                 }
 302                 return idx;
 303             }
 304         }
 305         throw new GnpyException(String.format("In gnpyServiceImpl : NodeRef %s does not exist",nodeRef));
 306     }
 307
 308     //Add a link to the route object
 309     private Long addLinkToRouteObject(String linkId, Long index) throws GnpyException {
 310         Long idx = index;
 311         if (linkId == null) {
 312             throw new GnpyException("In GnpyServiceImpl: the linkId is null");
 313         }
 314         //Only the ROADM-to-ROADM link are included in the route object
 315         if (!mapLinkFiber.containsKey(linkId)) {
 316             return idx;
 317         }
 318         List<String> listSubLink = this.mapLinkFiber.get(linkId);
 319         if (listSubLink == null) {
 320             throw new GnpyException(String.format("In gnpyServiceImpl addNodeRouteObject : no sublink in %s",linkId));
 321         }
 322         for (String subLink : listSubLink) {
 323             RouteObjectIncludeExclude routeObjectIncludeExclude =
 324                 addRouteObjectIncludeExclude(subLink, Uint32.valueOf(1),idx);
 325             RouteObjectIncludeExcludeKey key = new RouteObjectIncludeExcludeKey(Uint32.valueOf(idx));
 326             routeObjectIncludeExcludes.put(key, routeObjectIncludeExclude);
 327             idx += 1;
 328         }
 329         return idx;
 330     }
 331
 332     // Add routeObjectIncludeExclude
 333     private RouteObjectIncludeExclude addRouteObjectIncludeExclude(String nodeId, Uint32 teTpValue, Long index) {
 334         NumUnnumHop numUnnumHop = new org.opendaylight.yang.gen.v1.gnpy.path.rev220615.explicit.route.hop.type.num
 335             .unnum.hop.NumUnnumHopBuilder()
 336                 .setNodeId(nodeId)
 337                 .setLinkTpId(teTpValue.toString())
 338                 .setHopType(TeHopType.STRICT).build();
 339         Type type1 = new NumUnnumHopBuilder().setNumUnnumHop(numUnnumHop).build();
 340         // Create routeObjectIncludeExclude element
 341         return new RouteObjectIncludeExcludeBuilder()
 342             .setIndex(Uint32.valueOf(index)).setExplicitRouteUsage(RouteIncludeEro.class).setType(type1).build();
 343     }
 344
 345     //Create the path constraints
 346     private PathConstraints createPathConstraints(Long rate, String modulationFormat, FrequencyTHz minFrequency,
 347             FrequencyTHz maxFrequency) {
 348         BigDecimal spacing = GridConstant.SLOT_WIDTH_50;
 349         int mvalue = GridConstant.NB_SLOTS_100G;
 350         int nvalue = 0;
 351         if (minFrequency != null && maxFrequency != null && modulationFormat != null) {
 352             LOG.info("Creating path constraints for rate {}, modulationFormat {}, min freq {}, max freq {}", rate,
 353                     modulationFormat, minFrequency, maxFrequency);
 354             ModulationFormat mformat = ModulationFormat.DpQpsk;
 355             Optional<ModulationFormat> optionalModulationFormat = ModulationFormat.forName(modulationFormat);
 356             if (optionalModulationFormat.isPresent()) {
 357                 mformat = optionalModulationFormat.get();
 358             }
 359             spacing = GridConstant.FREQUENCY_SLOT_WIDTH_TABLE.get(Uint32.valueOf(rate), mformat);
 360             FrequencyTHz centralFrequency = GridUtils.getCentralFrequency(
 361                     minFrequency.getValue().decimalValue(),
 362                     maxFrequency.getValue().decimalValue());
 363             int centralFrequencyBitSetIndex = GridUtils.getIndexFromFrequency(centralFrequency.getValue());
 364             mvalue = (int) Math.ceil(spacing.doubleValue() / (GridConstant.GRANULARITY));
 365             nvalue = GridUtils.getNFromFrequencyIndex(centralFrequencyBitSetIndex);
 366         }
 367         LOG.info("Creating path constraints for rate {}, mvalue {}, nvalue {}, spacing {}", rate,
 368                 mvalue, nvalue, spacing);
 369         EffectiveFreqSlot effectiveFreqSlot = new EffectiveFreqSlotBuilder()
 370                 .setM(Uint32.valueOf(mvalue / 2)).setN(nvalue).build();
 371
 372         TeBandwidth teBandwidth = new TeBandwidthBuilder()
 373                 .setPathBandwidth(Decimal64.valueOf(BigDecimal.valueOf(rate * 1e9)))
 374                 .setTechnology("flexi-grid").setTrxType("OpenROADM MSA ver. 5.0")
 375                 .setTrxMode(TRX_MODE_TABLE.get(Uint32.valueOf(rate), spacing))
 376                 .setOutputPower(Decimal64.valueOf(GridUtils.convertDbmW(GridConstant.OUTPUT_POWER_100GB_DBM
 377                         + 10 * Math.log10(mvalue / (double)GridConstant.NB_SLOTS_100G))
 378                         .setScale(6, RoundingMode.CEILING)))
 379                 .setEffectiveFreqSlot(Map.of(effectiveFreqSlot.key(), effectiveFreqSlot))
 380                 .setSpacing(Decimal64.valueOf(spacing.multiply(BigDecimal.valueOf(1e9))))
 381                 .build();
 382         return new PathConstraintsBuilder().setTeBandwidth(teBandwidth).build();
 383     }
 384
 385     //Create the synchronization
 386     private List<Synchronization> extractSynchronization(Uint32 requestId) {
 387         // Create RequestIdNumber
 388         Set<String> requestIdNumber = new HashSet<>();
 389         requestIdNumber.add(requestId.toString());
 390         // Create a synchronization
 391         Svec svec = new SvecBuilder().setRelaxable(true)
 392             .setDisjointness(new TePathDisjointness(true, true, false))
 393             .setRequestIdNumber(requestIdNumber).build();
 394         List<Synchronization> synchro = new ArrayList<>();
 395         Synchronization synchronization1 = new SynchronizationBuilder()
 396                 .setSynchronizationId(Uint32.valueOf(0).toString())
 397                 .setSvec(svec).build();
 398         synchro.add(synchronization1);
 399         return (synchro);
 400     }
 401
 402     public Map<PathRequestKey, PathRequest> getPathRequest() {
 403         return pathRequest;
 404     }
 405
 406     public void setPathRequest(Map<PathRequestKey, PathRequest> pathRequest) {
 407         this.pathRequest = pathRequest;
 408     }
 409
 410     public List<Synchronization> getSynchronization() {
 411         return synchronization;
 412     }
 413
 414     public void setSynchronization(List<Synchronization> synchronization) {
 415         this.synchronization = synchronization;
 416     }
 417
 418 }