pcep/topology/topology-provider/src/main/java/org/opendaylight/bgpcep/pcep/topology/provider/Stateful07TopologySessionListener.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, 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 package org.opendaylight.bgpcep.pcep.topology.provider;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11 import static com.google.common.base.Preconditions.checkState;
  12 import static java.util.Objects.requireNonNull;
  13
  14 import com.google.common.util.concurrent.AsyncFunction;
  15 import com.google.common.util.concurrent.FluentFuture;
  16 import com.google.common.util.concurrent.Futures;
  17 import com.google.common.util.concurrent.ListenableFuture;
  18 import com.google.common.util.concurrent.MoreExecutors;
  19 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  20 import java.net.InetAddress;
  21 import java.nio.ByteBuffer;
  22 import java.nio.charset.StandardCharsets;
  23 import java.util.ArrayList;
  24 import java.util.Collections;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Optional;
  28 import java.util.concurrent.atomic.AtomicBoolean;
  29 import java.util.concurrent.atomic.AtomicLong;
  30 import org.checkerframework.checker.lock.qual.GuardedBy;
  31 import org.opendaylight.bgpcep.pcep.server.PathComputation;
  32 import org.opendaylight.bgpcep.pcep.server.PceServerProvider;
  33 import org.opendaylight.protocol.pcep.PCEPSession;
  34 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
  35 import org.opendaylight.protocol.pcep.spi.PSTUtil;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.PathComputationClient1;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.PathComputationClient1Builder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev181109.lsp.db.version.tlv.LspDbVersion;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev181109.Lsp1;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev181109.PcinitiateBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev181109.Srp1;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev181109.Srp1Builder;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev181109.Stateful1;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev181109.pcinitiate.message.PcinitiateMessageBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev181109.pcinitiate.message.pcinitiate.message.Requests;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev181109.pcinitiate.message.pcinitiate.message.RequestsBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.Arguments1;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.Arguments2;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.Arguments3;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.OperationalStatus;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.Path1;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.Path1Builder;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.PcrptMessage;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.PcupdBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.PlspId;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.SrpIdNumber;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.StatefulTlv1;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.StatefulTlv1Builder;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.SymbolicPathName;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.Tlvs1;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.object.Lsp;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.object.LspBuilder;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.object.lsp.TlvsBuilder;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcerr.pcerr.message.error.type.StatefulCase;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcerr.pcerr.message.error.type.stateful._case.stateful.Srps;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcrpt.message.pcrpt.message.Reports;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcupd.message.PcupdMessageBuilder;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcupd.message.pcupd.message.UpdatesBuilder;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcupd.message.pcupd.message.updates.PathBuilder;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.srp.object.Srp;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.srp.object.SrpBuilder;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.stateful.capability.tlv.Stateful;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.symbolic.path.name.tlv.SymbolicPathNameBuilder;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev181109.Pcreq;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Message;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.PcerrMessage;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.explicit.route.object.EroBuilder;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.open.Tlvs;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.path.setup.type.tlv.PathSetupType;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcreq.message.PcreqMessage;
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.AddLspArgs;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.EnsureLspOperationalInput;
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.LspId;
  84 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.Node1;
  85 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.OperationResult;
  86 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.PccSyncState;
  87 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.RemoveLspArgs;
  88 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.TriggerSyncArgs;
  89 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.UpdateLspArgs;
  90 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.ensure.lsp.operational.args.Arguments;
  91 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client.attributes.PathComputationClient;
  92 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client.attributes.PathComputationClientBuilder;
  93 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client.attributes.path.computation.client.ReportedLsp;
  94 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client.attributes.path.computation.client.ReportedLspBuilder;
  95 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client.attributes.path.computation.client.StatefulTlvBuilder;
  96 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client.attributes.path.computation.client.reported.lsp.Path;
  97 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  98 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  99 import org.opendaylight.yangtools.yang.common.Uint32;
 100 import org.slf4j.Logger;
 101 import org.slf4j.LoggerFactory;
 102
 103 class Stateful07TopologySessionListener extends AbstractTopologySessionListener<SrpIdNumber, PlspId> {
 104     private static final Logger LOG = LoggerFactory.getLogger(Stateful07TopologySessionListener.class);
 105     private static final PlspId PLSPID_ZERO = new PlspId(Uint32.ZERO);
 106
 107     private final AtomicLong requestId = new AtomicLong(1L);
 108
 109     @GuardedBy("this")
 110     private final List<PlspId> staleLsps = new ArrayList<>();
 111
 112     private final AtomicBoolean statefulCapability = new AtomicBoolean(false);
 113     private final AtomicBoolean lspUpdateCapability = new AtomicBoolean(false);
 114     private final AtomicBoolean initiationCapability = new AtomicBoolean(false);
 115
 116     private PceServerProvider pceServerProvider;
 117
 118     /**
 119      * Creates a new stateful topology session listener for given server session manager.
 120      */
 121     Stateful07TopologySessionListener(final ServerSessionManager serverSessionManager) {
 122         super(serverSessionManager);
 123         this.pceServerProvider = serverSessionManager.getPCEPTopologyProviderDependencies().getPceServerProvider();
 124     }
 125
 126     private static LspDbVersion geLspDbVersionTlv(final Lsp lsp) {
 127         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.object
 128                 .lsp.Tlvs tlvs = lsp.getTlvs();
 129         if (tlvs != null && tlvs.augmentation(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang
 130                 .controller.pcep.sync.optimizations.rev181109.Tlvs1.class) != null) {
 131             return tlvs.augmentation(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller
 132                     .pcep.sync.optimizations.rev181109.Tlvs1.class).getLspDbVersion();
 133         }
 134         return null;
 135     }
 136
 137     @Override
 138     protected void onSessionUp(final PCEPSession session, final PathComputationClientBuilder pccBuilder) {
 139         final InetAddress peerAddress = session.getRemoteAddress();
 140
 141         final Tlvs tlvs = session.getRemoteTlvs();
 142         if (tlvs != null && tlvs.augmentation(Tlvs1.class) != null) {
 143             final Stateful stateful = tlvs.augmentation(Tlvs1.class).getStateful();
 144             if (stateful != null) {
 145                 setStatefulCapabilities(stateful);
 146                 pccBuilder.setReportedLsp(Collections.emptyList());
 147                 if (isSynchronized()) {
 148                     pccBuilder.setStateSync(PccSyncState.Synchronized);
 149                 } else if (isTriggeredInitialSynchro()) {
 150                     pccBuilder.setStateSync(PccSyncState.TriggeredInitialSync);
 151                 } else if (isIncrementalSynchro()) {
 152                     pccBuilder.setStateSync(PccSyncState.IncrementalSync);
 153                 } else {
 154                     pccBuilder.setStateSync(PccSyncState.InitialResync);
 155                 }
 156                 pccBuilder.setStatefulTlv(new StatefulTlvBuilder().addAugmentation(StatefulTlv1.class,
 157                         new StatefulTlv1Builder(tlvs.augmentation(Tlvs1.class)).build()).build());
 158             } else {
 159                 LOG.debug("Peer {} does not advertise stateful TLV", peerAddress);
 160             }
 161         } else {
 162             LOG.debug("Peer {} does not advertise stateful TLV", peerAddress);
 163         }
 164     }
 165
 166     @Override
 167     public synchronized ListenableFuture<OperationResult> triggerSync(final TriggerSyncArgs input) {
 168         if (isTriggeredInitialSynchro() && !isSynchronized()) {
 169             return triggerSynchronization(input);
 170         } else if (isSessionSynchronized() && isTriggeredReSyncEnabled()) {
 171             checkArgument(input != null && input.getNode() != null, MISSING_XML_TAG);
 172             return input.getName() == null ? triggerResyncronization(input) : triggerLspSyncronization(input);
 173         }
 174         return OperationResults.UNSENT.future();
 175     }
 176
 177     private ListenableFuture<OperationResult> triggerLspSyncronization(final TriggerSyncArgs input) {
 178         LOG.trace("Trigger Lsp Resynchronization {}", input);
 179
 180         // Make sure the LSP exists
 181         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 182         final FluentFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 183         if (f == null) {
 184             return OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future();
 185         }
 186         return Futures.transformAsync(f, new ResyncLspFunction(input), MoreExecutors.directExecutor());
 187     }
 188
 189     private ListenableFuture<OperationResult> triggerResyncronization(final TriggerSyncArgs input) {
 190         LOG.trace("Trigger Resynchronization {}", input);
 191         markAllLspAsStale();
 192         updatePccState(PccSyncState.PcepTriggeredResync);
 193         final PcupdMessageBuilder pcupdMessageBuilder = new PcupdMessageBuilder(MESSAGE_HEADER);
 194         final SrpIdNumber srpIdNumber = createUpdateMessageSync(pcupdMessageBuilder);
 195         final Message msg = new PcupdBuilder().setPcupdMessage(pcupdMessageBuilder.build()).build();
 196         return sendMessage(msg, srpIdNumber, null);
 197     }
 198
 199     private ListenableFuture<OperationResult> triggerSynchronization(final TriggerSyncArgs input) {
 200         LOG.trace("Trigger Initial Synchronization {}", input);
 201         final PcupdMessageBuilder pcupdMessageBuilder = new PcupdMessageBuilder(MESSAGE_HEADER);
 202         final SrpIdNumber srpIdNumber = createUpdateMessageSync(pcupdMessageBuilder);
 203         final Message msg = new PcupdBuilder().setPcupdMessage(pcupdMessageBuilder.build()).build();
 204         return sendMessage(msg, srpIdNumber, null);
 205     }
 206
 207     private SrpIdNumber createUpdateMessageSync(final PcupdMessageBuilder pcupdMessageBuilder) {
 208         final UpdatesBuilder updBuilder = new UpdatesBuilder();
 209         // LSP mandatory in Upd
 210         final Lsp lsp = new LspBuilder().setPlspId(PLSPID_ZERO).setSync(Boolean.TRUE).build();
 211         // SRP Mandatory in Upd
 212         final SrpBuilder srpBuilder = new SrpBuilder();
 213         // not sue whether use 0 instead of nextRequest() or do not insert srp == SRP-ID-number = 0
 214         srpBuilder.setOperationId(nextRequest());
 215         final Srp srp = srpBuilder.build();
 216         //ERO Mandatory in Upd
 217         final PathBuilder pb = new PathBuilder();
 218         pb.setEro(new EroBuilder().build());
 219
 220         updBuilder.setPath(pb.build());
 221         updBuilder.setLsp(lsp).setSrp(srp).setPath(pb.build());
 222
 223         pcupdMessageBuilder.setUpdates(Collections.singletonList(updBuilder.build()));
 224         return srp.getOperationId();
 225     }
 226
 227     private void markAllLspAsStale() {
 228         this.staleLsps.addAll(this.lsps.keySet());
 229     }
 230
 231     private boolean handleErrorMessage(final PcerrMessage message) {
 232         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message
 233                 .PcerrMessage errMsg = message.getPcerrMessage();
 234         if (errMsg.getErrorType() instanceof StatefulCase) {
 235             final StatefulCase stat = (StatefulCase) errMsg.getErrorType();
 236             for (final Srps srps : stat.getStateful().getSrps()) {
 237                 final SrpIdNumber id = srps.getSrp().getOperationId();
 238                 if (id.getValue().toJava() != 0) {
 239                     final PCEPRequest req = removeRequest(id);
 240                     if (req != null) {
 241                         req.done(OperationResults.createFailed(errMsg.getErrors()));
 242                     } else {
 243                         LOG.warn("Request ID {} not found in outstanding DB", id);
 244                     }
 245                 }
 246             }
 247         } else {
 248             LOG.warn("Unhandled PCErr message {}.", errMsg);
 249             return true;
 250         }
 251         return false;
 252     }
 253
 254     private boolean isSolicited(final Srp srp, final Lsp lsp, final MessageContext ctx, final ReportedLspBuilder rlb) {
 255         if (srp == null) {
 256             return false;
 257         }
 258         final SrpIdNumber id = srp.getOperationId();
 259         if (id.getValue().toJava() == 0) {
 260             return false;
 261         }
 262         switch (lsp.getOperational()) {
 263             case Active:
 264             case Down:
 265             case Up:
 266                 if (!isTriggeredSyncInProcess()) {
 267                     final PCEPRequest req = removeRequest(id);
 268                     if (req != null) {
 269                         LOG.debug("Request {} resulted in LSP operational state {}", id, lsp.getOperational());
 270                         rlb.setMetadata(req.getMetadata());
 271                         ctx.resolveRequest(req);
 272                     } else {
 273                         LOG.warn("Request ID {} not found in outstanding DB", id);
 274                     }
 275                 }
 276                 break;
 277             case GoingDown:
 278             case GoingUp:
 279                 // These are transitive states, so we don't have to do anything, as they will be followed
 280                 // up...
 281                 break;
 282             default:
 283                 break;
 284         }
 285         return true;
 286     }
 287
 288     private boolean manageNextReport(final Reports report, final MessageContext ctx) {
 289         final Lsp lsp = report.getLsp();
 290         final PlspId plspid = lsp.getPlspId();
 291         final Srp srp = report.getSrp();
 292
 293         if (!lsp.isSync() && (plspid == null || plspid.getValue().toJava() == 0)) {
 294             purgeStaleLsps(ctx);
 295             if (isTriggeredSyncInProcess()) {
 296                 if (srp == null) {
 297                     return false;
 298                 }
 299                 final SrpIdNumber id = srp.getOperationId();
 300                 if (id.getValue().toJava() == 0) {
 301                     return false;
 302                 }
 303                 final PCEPRequest req = removeRequest(id);
 304                 ctx.resolveRequest(req);
 305             }
 306             stateSynchronizationAchieved(ctx);
 307             return true;
 308         }
 309         final ReportedLspBuilder rlb = new ReportedLspBuilder();
 310         boolean solicited = false;
 311         solicited = isSolicited(srp, lsp, ctx, rlb);
 312
 313         // if remove flag is set in SRP object, remove the tunnel immediately
 314         if (solicited && srp.augmentation(Srp1.class) != null) {
 315             final Srp1 initiatedSrp = srp.augmentation(Srp1.class);
 316             if (initiatedSrp.isRemove()) {
 317                 super.removeLsp(ctx, plspid);
 318                 return false;
 319             }
 320         }
 321         rlb.setPath(Collections.singletonList(buildPath(report, srp, lsp)));
 322
 323         String name = lookupLspName(plspid);
 324         if (lsp.getTlvs() != null && lsp.getTlvs().getSymbolicPathName() != null) {
 325             name = StandardCharsets.UTF_8.decode(ByteBuffer.wrap(lsp.getTlvs().getSymbolicPathName().getPathName()
 326                     .getValue())).toString();
 327         }
 328         //get LspDB from LSP and write it to pcc's node
 329         final LspDbVersion lspDbVersion = geLspDbVersionTlv(lsp);
 330         if (lspDbVersion != null) {
 331             updatePccNode(ctx, new PathComputationClientBuilder().addAugmentation(PathComputationClient1.class,
 332                     new PathComputationClient1Builder().setLspDbVersion(lspDbVersion).build()).build());
 333         }
 334         updateLsp(ctx, plspid, name, rlb, solicited, lsp.isRemove());
 335         unmarkStaleLsp(plspid);
 336
 337         LOG.debug("LSP {} updated", lsp);
 338         return true;
 339     }
 340
 341     private static Path buildPath(final Reports report, final Srp srp, final Lsp lsp) {
 342         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client
 343                 .attributes.path.computation.client.reported.lsp.PathBuilder pb = new org.opendaylight.yang.gen.v1
 344                 .urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120.pcep.client.attributes.path.computation
 345                 .client.reported.lsp.PathBuilder();
 346         if (report.getPath() != null) {
 347             pb.fieldsFrom(report.getPath());
 348         }
 349         // LSP is mandatory (if there is none, parser will throw an exception)
 350         // this is to ensure a path will be created at any rate
 351         final Path1Builder p1Builder = new Path1Builder();
 352         p1Builder.setLsp(report.getLsp());
 353         final PathSetupType pst;
 354         if (srp != null && srp.getTlvs() != null && srp.getTlvs().getPathSetupType() != null) {
 355             pst = srp.getTlvs().getPathSetupType();
 356             p1Builder.setPathSetupType(pst);
 357         } else {
 358             pst = null;
 359         }
 360         pb.addAugmentation(Path1.class, p1Builder.build());
 361         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp
 362                 .object.lsp.Tlvs tlvs = report.getLsp().getTlvs();
 363         if (tlvs != null) {
 364             if (tlvs.getLspIdentifiers() != null) {
 365                 pb.setLspId(tlvs.getLspIdentifiers().getLspId());
 366             } else if (!PSTUtil.isDefaultPST(pst)) {
 367                 pb.setLspId(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820
 368                         .LspId(lsp.getPlspId().getValue()));
 369             }
 370         }
 371         return pb.build();
 372     }
 373
 374     private boolean handlePcreqMessage(final PcreqMessage message) {
 375
 376         LOG.info("Start PcRequest Message handler");
 377
 378         /* Get a Path Computation to compute the Path from the Request */
 379         PathComputation pathComputation = this.pceServerProvider.getPathComputation();
 380         Message rep = null;
 381         for (org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcreq.message.pcreq
 382                 .message.Requests req : message.getRequests()) {
 383             LOG.debug("Process request {}", req);
 384             rep = pathComputation.computePath(req);
 385             SrpIdNumber repId = null;
 386             if (req.getRp() != null) {
 387                 repId = new SrpIdNumber(req.getRp().getRequestId().getValue());
 388             } else {
 389                 repId = new SrpIdNumber(Uint32.ZERO);
 390             }
 391             sendMessage(rep, repId, null);
 392         }
 393         return false;
 394     }
 395
 396     @Override
 397     protected synchronized boolean onMessage(final MessageContext ctx, final Message message) {
 398         if (message instanceof PcerrMessage) {
 399             return handleErrorMessage((PcerrMessage) message);
 400         }
 401         if (message instanceof Pcreq) {
 402             LOG.info("PcReq detected. Start Request Message handler");
 403             return handlePcreqMessage(((Pcreq) message).getPcreqMessage());
 404         }
 405         if (!(message instanceof PcrptMessage)) {
 406             return true;
 407         }
 408         this.listenerState.updateLastReceivedRptMsg();
 409         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcrpt
 410                 .message.PcrptMessage rpt = ((PcrptMessage) message).getPcrptMessage();
 411         for (final Reports report : rpt.getReports()) {
 412             if (!manageNextReport(report, ctx)) {
 413                 return false;
 414             }
 415         }
 416         return false;
 417     }
 418
 419     private SrpIdNumber nextRequest() {
 420         return new SrpIdNumber(Uint32.valueOf(this.requestId.getAndIncrement()));
 421     }
 422
 423     @Override
 424     @SuppressFBWarnings(value = "NP_NULL_ON_SOME_PATH", justification = "SB does not grok TYPE_USE")
 425     public synchronized ListenableFuture<OperationResult> addLsp(final AddLspArgs input) {
 426         checkArgument(input != null && input.getName() != null && input.getNode() != null
 427                 && input.getArguments() != null, MISSING_XML_TAG);
 428         LOG.trace("AddLspArgs {}", input);
 429         // Make sure there is no such LSP
 430         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 431         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 432         return f == null ? OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future()
 433                 : Futures.transformAsync(f, new AddFunction(input, lsp), MoreExecutors.directExecutor());
 434     }
 435
 436     @Override
 437     @SuppressFBWarnings(value = "NP_NULL_ON_SOME_PATH", justification = "SB does not grok TYPE_USE")
 438     public synchronized ListenableFuture<OperationResult> removeLsp(final RemoveLspArgs input) {
 439         checkArgument(input != null && input.getName() != null && input.getNode() != null, MISSING_XML_TAG);
 440         LOG.trace("RemoveLspArgs {}", input);
 441         // Make sure the LSP exists, we need it for PLSP-ID
 442         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 443         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 444         return f == null ? OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future()
 445                 : Futures.transformAsync(f, rep -> {
 446                     final Lsp reportedLsp = validateReportedLsp(rep, input);
 447                     if (reportedLsp == null) {
 448                         return OperationResults.createUnsent(PCEPErrors.UNKNOWN_PLSP_ID).future();
 449                     }
 450                     final PcinitiateMessageBuilder ib = new PcinitiateMessageBuilder(MESSAGE_HEADER);
 451                     final Requests rb = buildRequest(rep, reportedLsp);
 452                     ib.setRequests(Collections.singletonList(rb));
 453                     return sendMessage(new PcinitiateBuilder().setPcinitiateMessage(ib.build()).build(),
 454                         rb.getSrp().getOperationId(), null);
 455                 }, MoreExecutors.directExecutor());
 456     }
 457
 458     private Requests buildRequest(final Optional<ReportedLsp> rep, final Lsp reportedLsp) {
 459         // Build the request and send it
 460         final RequestsBuilder rb = new RequestsBuilder();
 461         final SrpBuilder srpBuilder = new SrpBuilder().addAugmentation(Srp1.class, new Srp1Builder()
 462                 .setRemove(Boolean.TRUE).build()).setOperationId(nextRequest()).setProcessingRule(Boolean.TRUE);
 463         final Optional<PathSetupType> maybePST = getPST(rep);
 464         if (maybePST.isPresent()) {
 465             srpBuilder.setTlvs(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful
 466                     .rev181109.srp.object.srp.TlvsBuilder().setPathSetupType(maybePST.get()).build());
 467         }
 468         rb.setSrp(srpBuilder.build());
 469         rb.setLsp(new LspBuilder().setRemove(Boolean.FALSE).setPlspId(reportedLsp.getPlspId())
 470                 .setDelegate(reportedLsp.isDelegate()).build());
 471         return rb.build();
 472     }
 473
 474     @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
 475             justification = "https://github.com/spotbugs/spotbugs/issues/811")
 476     private ListenableFuture<OperationResult> redelegate(final Lsp reportedLsp, final Srp srp, final Lsp lsp,
 477             final UpdateLspArgs input) {
 478         // the D bit that was reported decides the type of PCE message sent
 479         requireNonNull(reportedLsp.isDelegate());
 480         final Message msg;
 481         if (reportedLsp.isDelegate()) {
 482             // we already have delegation, send update
 483             final UpdatesBuilder rb = new UpdatesBuilder();
 484             rb.setSrp(srp);
 485             rb.setLsp(lsp);
 486             final PathBuilder pb = new PathBuilder();
 487             pb.fieldsFrom(input.getArguments());
 488             rb.setPath(pb.build());
 489             final PcupdMessageBuilder ub = new PcupdMessageBuilder(MESSAGE_HEADER);
 490             ub.setUpdates(Collections.singletonList(rb.build()));
 491             msg = new PcupdBuilder().setPcupdMessage(ub.build()).build();
 492         } else {
 493             final Lsp1 lspCreateFlag = reportedLsp.augmentation(Lsp1.class);
 494             // we only retake delegation for PCE initiated tunnels
 495             if (lspCreateFlag != null && !lspCreateFlag.isCreate()) {
 496                 LOG.warn("Unable to retake delegation of PCC-initiated tunnel: {}", reportedLsp);
 497                 return OperationResults.createUnsent(PCEPErrors.UPDATE_REQ_FOR_NON_LSP).future();
 498             }
 499             // we want to revoke delegation, different type of message
 500             // is sent because of specification by Siva
 501             // this message is also sent, when input delegate bit is set to 0
 502             // generating an error in PCC
 503             final List<Requests> reqs = new ArrayList<>();
 504             reqs.add(new RequestsBuilder().setSrp(srp).setLsp(lsp).build());
 505             final PcinitiateMessageBuilder ib = new PcinitiateMessageBuilder();
 506             ib.setRequests(reqs);
 507             msg = new PcinitiateBuilder().setPcinitiateMessage(ib.build()).build();
 508         }
 509         return sendMessage(msg, srp.getOperationId(), input.getArguments().getMetadata());
 510     }
 511
 512     @Override
 513     @SuppressFBWarnings(value = "NP_NULL_ON_SOME_PATH", justification = "SB does not grok TYPE_USE")
 514
 515     public synchronized ListenableFuture<OperationResult> updateLsp(final UpdateLspArgs input) {
 516         checkArgument(input != null && input.getName() != null && input.getNode() != null
 517                 && input.getArguments() != null, MISSING_XML_TAG);
 518         LOG.trace("UpdateLspArgs {}", input);
 519         // Make sure the LSP exists
 520         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 521         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 522         return f == null ? OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future()
 523                 : Futures.transformAsync(f, new UpdateFunction(input), MoreExecutors.directExecutor());
 524     }
 525
 526     @Override
 527     public synchronized ListenableFuture<OperationResult> ensureLspOperational(final EnsureLspOperationalInput input) {
 528         checkArgument(input != null && input.getName() != null && input.getNode() != null, MISSING_XML_TAG);
 529         final Arguments args = input.getArguments();
 530         checkArgument(args != null, MISSING_XML_TAG);
 531
 532         final OperationalStatus op;
 533         final Arguments1 aa = args.augmentation(Arguments1.class);
 534         if (aa != null) {
 535             op = aa.getOperational();
 536         } else {
 537             op = null;
 538         }
 539
 540         // Make sure the LSP exists
 541         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 542         LOG.debug("Checking if LSP {} has operational state {}", lsp, op);
 543         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 544         return f == null ? OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future()
 545                 : listenableFuture(f, input, op);
 546     }
 547
 548     private static ListenableFuture<OperationResult> listenableFuture(
 549             final ListenableFuture<Optional<ReportedLsp>> future, final EnsureLspOperationalInput input,
 550             final OperationalStatus op) {
 551         return Futures.transform(future, rep -> {
 552             if (!rep.isPresent()) {
 553                 LOG.debug("Node {} does not contain LSP {}", input.getNode(), input.getName());
 554                 return OperationResults.UNSENT;
 555             }
 556             // check if at least one of the paths has the same status as requested
 557             for (final Path p : rep.get().getPath()) {
 558                 final Path1 p1 = p.augmentation(Path1.class);
 559                 if (p1 == null) {
 560                     LOG.warn("Node {} LSP {} does not contain data", input.getNode(), input.getName());
 561                     return OperationResults.UNSENT;
 562                 }
 563                 if (op.equals(p1.getLsp().getOperational())) {
 564                     return OperationResults.SUCCESS;
 565                 }
 566             }
 567             return OperationResults.UNSENT;
 568         }, MoreExecutors.directExecutor());
 569     }
 570
 571     @Override
 572     protected Lsp validateReportedLsp(final Optional<ReportedLsp> rep, final LspId input) {
 573         if (!rep.isPresent()) {
 574             LOG.debug("Node {} does not contain LSP {}", input.getNode(), input.getName());
 575             return null;
 576         }
 577         // it doesn't matter how many lsps there are in the path list, we only need data that is the same in each path
 578         final Path1 ra = rep.get().getPath().get(0).augmentation(Path1.class);
 579         checkState(ra != null, "Reported LSP reported null from data-store.");
 580         final Lsp reportedLsp = ra.getLsp();
 581         checkState(reportedLsp != null, "Reported LSP does not contain LSP object.");
 582         return reportedLsp;
 583     }
 584
 585     private static Optional<PathSetupType> getPST(final Optional<ReportedLsp> rep) {
 586         if (rep.isPresent()) {
 587             final Path1 path1 = rep.get().getPath().get(0).augmentation(Path1.class);
 588             if (path1 != null) {
 589                 final PathSetupType pst = path1.getPathSetupType();
 590                 if (!PSTUtil.isDefaultPST(pst)) {
 591                     return Optional.of(pst);
 592                 }
 593             }
 594         }
 595         return Optional.empty();
 596     }
 597
 598     /**
 599      * Recover lspData and mark any LSPs in the LSP database that were previously reported by the PCC as stale.
 600      */
 601     @Override
 602     protected synchronized void loadLspData(final Node node, final Map<String, ReportedLsp> lspData,
 603             final Map<PlspId, String> lsps, final boolean incrementalSynchro) {
 604         //load node's lsps from DS
 605         final PathComputationClient pcc = node.augmentation(Node1.class).getPathComputationClient();
 606         final List<ReportedLsp> reportedLsps = pcc.getReportedLsp();
 607         for (final ReportedLsp reportedLsp : reportedLsps) {
 608             final String lspName = reportedLsp.getName();
 609             lspData.put(lspName, reportedLsp);
 610             if (!reportedLsp.getPath().isEmpty()) {
 611                 final Path1 path1 = reportedLsp.getPath().get(0).augmentation(Path1.class);
 612                 if (path1 != null) {
 613                     final PlspId plspId = path1.getLsp().getPlspId();
 614                     if (!incrementalSynchro) {
 615                         this.staleLsps.add(plspId);
 616                     }
 617                     lsps.put(plspId, lspName);
 618                 }
 619             }
 620         }
 621     }
 622
 623     /**
 624      * When the PCC reports an LSP during state synchronization, if the LSP already
 625      * exists in the LSP database, the PCE MUST update the LSP database and
 626      * clear the stale marker from the LSP.
 627      *
 628      * @param plspId id
 629      */
 630     private synchronized void unmarkStaleLsp(final PlspId plspId) {
 631         this.staleLsps.remove(plspId);
 632     }
 633
 634     /**
 635      * Purge any LSPs from the LSP database that are still marked as stale.
 636      *
 637      * @param ctx message context
 638      */
 639     private synchronized void purgeStaleLsps(final MessageContext ctx) {
 640         for (final PlspId plspId : this.staleLsps) {
 641             removeLsp(ctx, plspId);
 642         }
 643         this.staleLsps.clear();
 644     }
 645
 646     @Override
 647     public boolean isInitiationCapability() {
 648         return this.initiationCapability.get();
 649     }
 650
 651     @Override
 652     public boolean isStatefulCapability() {
 653         return this.statefulCapability.get();
 654     }
 655
 656     @Override
 657     public boolean isLspUpdateCapability() {
 658         return this.lspUpdateCapability.get();
 659     }
 660
 661     private synchronized void setStatefulCapabilities(final Stateful stateful) {
 662         this.statefulCapability.set(true);
 663         if (stateful.isLspUpdateCapability() != null) {
 664             this.lspUpdateCapability.set(stateful.isLspUpdateCapability());
 665         }
 666         final Stateful1 stateful1 = stateful.augmentation(Stateful1.class);
 667         if (stateful1 != null && stateful1.isInitiation() != null) {
 668             this.initiationCapability.set(stateful1.isInitiation());
 669         }
 670     }
 671
 672     private class ResyncLspFunction implements AsyncFunction<Optional<ReportedLsp>, OperationResult> {
 673
 674         private final TriggerSyncArgs input;
 675
 676         ResyncLspFunction(final TriggerSyncArgs input) {
 677             this.input = input;
 678         }
 679
 680         @Override
 681         public ListenableFuture<OperationResult> apply(final Optional<ReportedLsp> rep) {
 682             final Lsp reportedLsp = validateReportedLsp(rep, this.input);
 683             if (reportedLsp == null || !rep.isPresent()) {
 684                 return OperationResults.createUnsent(PCEPErrors.UNKNOWN_PLSP_ID).future();
 685             }
 686             // mark lsp as stale
 687             final ReportedLsp staleLsp = rep.get();
 688             if (!staleLsp.getPath().isEmpty()) {
 689                 final Path1 path1 = staleLsp.getPath().get(0).augmentation(Path1.class);
 690                 if (path1 != null) {
 691                     Stateful07TopologySessionListener.this.staleLsps.add(path1.getLsp().getPlspId());
 692                 }
 693             }
 694             updatePccState(PccSyncState.PcepTriggeredResync);
 695             // create PCUpd with mandatory objects and LSP object set to 1
 696             final SrpBuilder srpBuilder = new SrpBuilder();
 697             srpBuilder.setOperationId(nextRequest());
 698             srpBuilder.setProcessingRule(Boolean.TRUE);
 699
 700             final Optional<PathSetupType> maybePST = getPST(rep);
 701             if (maybePST.isPresent()) {
 702                 srpBuilder.setTlvs(
 703                         new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful
 704                                 .rev181109.srp.object.srp.TlvsBuilder()
 705                                 .setPathSetupType(maybePST.get()).build());
 706             }
 707
 708             final Srp srp = srpBuilder.build();
 709             final Lsp lsp = new LspBuilder().setPlspId(reportedLsp.getPlspId()).setSync(Boolean.TRUE).build();
 710
 711             final Message msg = createPcepUpd(srp, lsp);
 712             return sendMessage(msg, srp.getOperationId(), null);
 713         }
 714
 715         private Message createPcepUpd(final Srp srp, final Lsp lsp) {
 716             final UpdatesBuilder rb = new UpdatesBuilder();
 717             rb.setSrp(srp);
 718             rb.setLsp(lsp);
 719             final PathBuilder pb = new PathBuilder();
 720             rb.setPath(pb.build());
 721             final PcupdMessageBuilder ub = new PcupdMessageBuilder(MESSAGE_HEADER);
 722             ub.setUpdates(Collections.singletonList(rb.build()));
 723             return new PcupdBuilder().setPcupdMessage(ub.build()).build();
 724         }
 725     }
 726
 727     private class AddFunction implements AsyncFunction<Optional<ReportedLsp>, OperationResult> {
 728
 729         private final AddLspArgs input;
 730         private final InstanceIdentifier<ReportedLsp> lsp;
 731
 732         AddFunction(final AddLspArgs input, final InstanceIdentifier<ReportedLsp> lsp) {
 733             this.input = input;
 734             this.lsp = lsp;
 735         }
 736
 737         @Override
 738         public ListenableFuture<OperationResult> apply(final Optional<ReportedLsp> rep) {
 739             if (rep.isPresent()) {
 740                 LOG.debug("Node {} already contains lsp {} at {}", this.input.getNode(), this.input.getName(),
 741                         this.lsp);
 742                 return OperationResults.createUnsent(PCEPErrors.USED_SYMBOLIC_PATH_NAME).future();
 743             }
 744             if (!Stateful07TopologySessionListener.this.initiationCapability.get()) {
 745                 return OperationResults.createUnsent(PCEPErrors.CAPABILITY_NOT_SUPPORTED).future();
 746             }
 747
 748             // Build the request
 749             final RequestsBuilder rb = new RequestsBuilder();
 750             final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev200120
 751                     .add.lsp.args.Arguments args = this.input.getArguments();
 752             final Arguments2 args2 = args.augmentation(Arguments2.class);
 753             final Lsp inputLsp = args2 != null ? args2.getLsp() : null;
 754             if (inputLsp == null) {
 755                 return OperationResults.createUnsent(PCEPErrors.LSP_MISSING).future();
 756             }
 757
 758             rb.fieldsFrom(this.input.getArguments());
 759
 760             /* Call Path Computation if an ERO was not provided */
 761             boolean segmentRouting = !PSTUtil.isDefaultPST(args2.getPathSetupType());
 762             if ((rb.getEro() == null)
 763                     || (rb.getEro().getSubobject() == null)
 764                     || (rb.getEro().getSubobject().size() == 0)) {
 765
 766                 /* Get a Path Computation to compute the Path from the Arguments */
 767                 PathComputation pathComputation = pceServerProvider.getPathComputation();
 768                 rb.setEro(pathComputation.computeEro(args.getEndpointsObj(), args.getBandwidth(), args.getClassType(),
 769                         args.getMetrics(), segmentRouting));
 770             }
 771
 772             final TlvsBuilder tlvsBuilder;
 773             if (inputLsp.getTlvs() != null) {
 774                 tlvsBuilder = new TlvsBuilder(inputLsp.getTlvs());
 775             } else {
 776                 tlvsBuilder = new TlvsBuilder();
 777             }
 778             tlvsBuilder.setSymbolicPathName(
 779                     new SymbolicPathNameBuilder().setPathName(new SymbolicPathName(this.input.getName()
 780                             .getBytes(StandardCharsets.UTF_8))).build());
 781
 782             final SrpBuilder srpBuilder = new SrpBuilder()
 783                     .setOperationId(nextRequest())
 784                     .setProcessingRule(Boolean.TRUE);
 785             if (segmentRouting) {
 786                 srpBuilder.setTlvs(
 787                         new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf
 788                                 .stateful.rev181109.srp.object.srp.TlvsBuilder()
 789                                 .setPathSetupType(args2.getPathSetupType()).build());
 790             }
 791             rb.setSrp(srpBuilder.build());
 792
 793             rb.setLsp(new LspBuilder()
 794                 .setAdministrative(inputLsp.isAdministrative())
 795                 .setDelegate(inputLsp.isDelegate())
 796                 .setPlspId(PLSPID_ZERO)
 797                 .setTlvs(tlvsBuilder.build())
 798                 .build());
 799
 800             // Send the message
 801             return sendMessage(new PcinitiateBuilder()
 802                 .setPcinitiateMessage(new PcinitiateMessageBuilder(MESSAGE_HEADER)
 803                     .setRequests(Collections.singletonList(rb.build()))
 804                     .build())
 805                 .build(),
 806                 rb.getSrp().getOperationId(), this.input.getArguments().getMetadata());
 807         }
 808     }
 809
 810     private class UpdateFunction implements AsyncFunction<Optional<ReportedLsp>, OperationResult> {
 811
 812         private final UpdateLspArgs input;
 813
 814         UpdateFunction(final UpdateLspArgs input) {
 815             this.input = input;
 816         }
 817
 818         @Override
 819         public ListenableFuture<OperationResult> apply(final Optional<ReportedLsp> rep) {
 820             final Lsp reportedLsp = validateReportedLsp(rep, this.input);
 821             if (reportedLsp == null) {
 822                 return OperationResults.createUnsent(PCEPErrors.UNKNOWN_PLSP_ID).future();
 823             }
 824             // create mandatory objects
 825             final Arguments3 args = this.input.getArguments().augmentation(Arguments3.class);
 826             final SrpBuilder srpBuilder = new SrpBuilder();
 827             srpBuilder.setOperationId(nextRequest());
 828             srpBuilder.setProcessingRule(Boolean.TRUE);
 829             if (args != null && args.getPathSetupType() != null) {
 830                 if (!PSTUtil.isDefaultPST(args.getPathSetupType())) {
 831                     srpBuilder.setTlvs(
 832                             new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful
 833                                     .rev181109.srp.object.srp.TlvsBuilder()
 834                                     .setPathSetupType(args.getPathSetupType()).build());
 835                 }
 836             } else {
 837                 final Optional<PathSetupType> maybePST = getPST(rep);
 838                 if (maybePST.isPresent()) {
 839                     srpBuilder.setTlvs(
 840                             new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful
 841                                     .rev181109.srp.object.srp.TlvsBuilder()
 842                                     .setPathSetupType(maybePST.get()).build());
 843                 }
 844             }
 845             final Srp srp = srpBuilder.build();
 846             final Lsp inputLsp = args != null ? args.getLsp() : null;
 847             final LspBuilder lspBuilder = new LspBuilder().setPlspId(reportedLsp.getPlspId());
 848             if (inputLsp != null) {
 849                 lspBuilder.setDelegate(inputLsp.isDelegate() != null && inputLsp.isDelegate())
 850                         .setTlvs(inputLsp.getTlvs())
 851                         .setAdministrative(inputLsp.isAdministrative() != null && inputLsp.isAdministrative());
 852             }
 853             return redelegate(reportedLsp, srp, lspBuilder.build(), this.input);
 854         }
 855     }
 856 }