pcep/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 com.google.common.base.Charsets;
  11 import com.google.common.base.Function;
  12 import com.google.common.base.Optional;
  13 import com.google.common.base.Preconditions;
  14 import com.google.common.util.concurrent.AsyncFunction;
  15 import com.google.common.util.concurrent.Futures;
  16 import com.google.common.util.concurrent.ListenableFuture;
  17 import java.net.InetAddress;
  18 import java.nio.ByteBuffer;
  19 import java.util.ArrayList;
  20 import java.util.Collections;
  21 import java.util.List;
  22 import java.util.concurrent.atomic.AtomicLong;
  23 import org.opendaylight.controller.config.yang.pcep.topology.provider.PeerCapabilities;
  24 import org.opendaylight.protocol.pcep.PCEPSession;
  25 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.PcinitiateBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Srp1;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Srp1Builder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Stateful1;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.PcinitiateMessageBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.pcinitiate.message.Requests;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.pcinitiate.message.RequestsBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Arguments1;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Arguments2;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Arguments3;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.OperationalStatus;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Path1;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Path1Builder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PcrptMessage;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PcupdBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PlspId;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.SrpIdNumber;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.StatefulTlv1;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.StatefulTlv1Builder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.SymbolicPathName;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Tlvs1;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.Lsp;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.LspBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.lsp.TlvsBuilder;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcerr.pcerr.message.error.type.StatefulCase;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcerr.pcerr.message.error.type.stateful._case.stateful.Srps;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcrpt.message.pcrpt.message.Reports;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcupd.message.PcupdMessageBuilder;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcupd.message.pcupd.message.UpdatesBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcupd.message.pcupd.message.updates.PathBuilder;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.Srp;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.SrpBuilder;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.stateful.capability.tlv.Stateful;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.symbolic.path.name.tlv.SymbolicPathNameBuilder;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.PcerrMessage;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.open.Tlvs;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.path.setup.type.tlv.PathSetupType;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspArgs;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.EnsureLspOperationalInput;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.LspId;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.OperationResult;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.PccSyncState;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.RemoveLspArgs;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspArgs;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.pcep.client.attributes.PathComputationClientBuilder;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.pcep.client.attributes.path.computation.client.ReportedLsp;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.pcep.client.attributes.path.computation.client.ReportedLspBuilder;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.pcep.client.attributes.path.computation.client.StatefulTlvBuilder;
  75 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  76 import org.slf4j.Logger;
  77 import org.slf4j.LoggerFactory;
  78
  79 final class Stateful07TopologySessionListener extends AbstractTopologySessionListener<SrpIdNumber, PlspId> {
  80     private static final Logger LOG = LoggerFactory.getLogger(Stateful07TopologySessionListener.class);
  81
  82     private final AtomicLong requestId = new AtomicLong(1L);
  83
  84     /**
  85      * @param serverSessionManager
  86      */
  87     Stateful07TopologySessionListener(final ServerSessionManager serverSessionManager) {
  88         super(serverSessionManager);
  89     }
  90
  91     @Override
  92     protected void onSessionUp(final PCEPSession session, final PathComputationClientBuilder pccBuilder) {
  93         final InetAddress peerAddress = session.getRemoteAddress();
  94
  95         final Tlvs tlvs = session.getRemoteTlvs();
  96         if (tlvs != null && tlvs.getAugmentation(Tlvs1.class) != null) {
  97             final Stateful stateful = tlvs.getAugmentation(Tlvs1.class).getStateful();
  98             if (stateful != null) {
  99                 getSessionListenerState().setPeerCapabilities(getCapabilities(stateful));
 100                 pccBuilder.setReportedLsp(Collections.<ReportedLsp> emptyList());
 101                 pccBuilder.setStateSync(PccSyncState.InitialResync);
 102                 pccBuilder.setStatefulTlv(new StatefulTlvBuilder().addAugmentation(StatefulTlv1.class,
 103                     new StatefulTlv1Builder(tlvs.getAugmentation(Tlvs1.class)).build()).build());
 104             } else {
 105                 LOG.debug("Peer {} does not advertise stateful TLV", peerAddress);
 106             }
 107         } else {
 108             LOG.debug("Peer {} does not advertise stateful TLV", peerAddress);
 109         }
 110     }
 111
 112     private boolean handleErrorMessage(final PcerrMessage message) {
 113         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.PcerrMessage errMsg = message.getPcerrMessage();
 114         if (errMsg.getErrorType() instanceof StatefulCase) {
 115             final StatefulCase stat = (StatefulCase)errMsg.getErrorType();
 116             for (final Srps srps : stat.getStateful().getSrps()) {
 117                 final SrpIdNumber id = srps.getSrp().getOperationId();
 118                 if (id.getValue() != 0) {
 119                     final PCEPRequest req = removeRequest(id);
 120                     if (req != null) {
 121                         req.done(OperationResults.createFailed(errMsg.getErrors()));
 122                     } else {
 123                         LOG.warn("Request ID {} not found in outstanding DB", id);
 124                     }
 125                 }
 126             }
 127         } else {
 128             LOG.warn("Unhandled PCErr message {}.", errMsg);
 129             return true;
 130         }
 131         return false;
 132     }
 133
 134     @Override
 135     protected boolean onMessage(final MessageContext ctx, final Message message) {
 136         if (message instanceof PcerrMessage) {
 137             return handleErrorMessage((PcerrMessage) message);
 138         }
 139         if (!(message instanceof PcrptMessage)) {
 140             return true;
 141         }
 142         getSessionListenerState().updateLastReceivedRptMsg();
 143         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcrpt.message.PcrptMessage rpt = ((PcrptMessage) message).getPcrptMessage();
 144         for (final Reports report : rpt.getReports()) {
 145             final Lsp lsp = report.getLsp();
 146             final PlspId plspid = lsp.getPlspId();
 147             if (!lsp.isSync() && (lsp.getPlspId() == null || plspid.getValue() == 0)) {
 148                 stateSynchronizationAchieved(ctx);
 149                 continue;
 150             }
 151             final ReportedLspBuilder rlb = new ReportedLspBuilder();
 152             boolean solicited = false;
 153             final Srp srp = report.getSrp();
 154             if (srp != null) {
 155                 final SrpIdNumber id = srp.getOperationId();
 156                 if (id.getValue() != 0) {
 157                     solicited = true;
 158
 159                     switch (lsp.getOperational()) {
 160                     case Active:
 161                     case Down:
 162                     case Up:
 163                         final PCEPRequest req = removeRequest(id);
 164                         if (req != null) {
 165                             LOG.debug("Request {} resulted in LSP operational state {}", id, lsp.getOperational());
 166                             rlb.setMetadata(req.getMetadata());
 167                             ctx.resolveRequest(req);
 168                         } else {
 169                             LOG.warn("Request ID {} not found in outstanding DB", id);
 170                         }
 171                         break;
 172                     case GoingDown:
 173                     case GoingUp:
 174                         // These are transitive states, so we don't have to do anything, as they will be followed
 175                         // up...
 176                         break;
 177                     default:
 178                         break;
 179                     }
 180                     // if remove flag is set in SRP object, remove the tunnel immediately
 181                     if (srp.getAugmentation(Srp1.class) != null) {
 182                         final Srp1 initiatedSrp = srp.getAugmentation(Srp1.class);
 183                         if (initiatedSrp.isRemove()) {
 184                             super.removeLsp(ctx, plspid);
 185                             return false;
 186                         }
 187                     }
 188                 }
 189             }
 190             final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.pcep.client.attributes.path.computation.client.reported.lsp.PathBuilder pb = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.pcep.client.attributes.path.computation.client.reported.lsp.PathBuilder();
 191             if (report.getPath() != null) {
 192                 pb.fieldsFrom(report.getPath());
 193             }
 194             // LSP is mandatory (if there is none, parser will throw an exception)
 195             // this is to ensure a path will be created at any rate
 196             final Path1Builder p1Builder = new Path1Builder();
 197             p1Builder.setLsp(report.getLsp());
 198             if (srp != null && srp.getTlvs() != null && srp.getTlvs().getPathSetupType() != null) {
 199                 p1Builder.setPathSetupType(srp.getTlvs().getPathSetupType());
 200             }
 201             pb.addAugmentation(Path1.class, p1Builder.build());
 202             String name = lookupLspName(plspid);
 203             final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.lsp.Tlvs tlvs = report.getLsp().getTlvs();
 204             if (tlvs != null) {
 205                 if (tlvs.getLspIdentifiers() != null) {
 206                     pb.setLspId(tlvs.getLspIdentifiers().getLspId());
 207                 }
 208                 if (tlvs.getSymbolicPathName() != null) {
 209                     name = Charsets.UTF_8.decode(ByteBuffer.wrap(tlvs.getSymbolicPathName().getPathName().getValue())).toString();
 210                 }
 211             }
 212             rlb.setPath(Collections.singletonList(pb.build()));
 213             updateLsp(ctx, plspid, name, rlb, solicited, lsp.isRemove());
 214             LOG.debug("LSP {} updated", lsp);
 215         }
 216         return false;
 217     }
 218
 219     private SrpIdNumber nextRequest() {
 220         return new SrpIdNumber(this.requestId.getAndIncrement());
 221     }
 222
 223     @Override
 224     public synchronized ListenableFuture<OperationResult> addLsp(final AddLspArgs input) {
 225         Preconditions.checkArgument(input != null && input.getName() != null && input.getNode() != null && input.getArguments() != null, MISSING_XML_TAG);
 226         LOG.trace("AddLspArgs {}", input);
 227         // Make sure there is no such LSP
 228         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 229         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 230         if (f == null) {
 231             return OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future();
 232         }
 233
 234         return Futures.transform(f, new AsyncFunction<Optional<ReportedLsp>, OperationResult>() {
 235             @Override
 236             public ListenableFuture<OperationResult> apply(final Optional<ReportedLsp> rep) {
 237                 if (rep.isPresent()) {
 238                     LOG.debug("Node {} already contains lsp {} at {}", input.getNode(), input.getName(), lsp);
 239                     return OperationResults.createUnsent(PCEPErrors.USED_SYMBOLIC_PATH_NAME).future();
 240                 }
 241                 if (!getPeerCapabilities().getInstantiation()) {
 242                     return OperationResults.createUnsent(PCEPErrors.CAPABILITY_NOT_SUPPORTED).future();
 243                 }
 244
 245                 // Build the request
 246                 final RequestsBuilder rb = new RequestsBuilder();
 247                 final Arguments2 args = input.getArguments().getAugmentation(Arguments2.class);
 248                 Preconditions.checkArgument(args != null, "Input is missing operational tag.");
 249                 final Lsp inputLsp = args.getLsp();
 250                 Preconditions.checkArgument(inputLsp != null, "Reported LSP does not contain LSP object.");
 251
 252                 rb.fieldsFrom(input.getArguments());
 253
 254                 final TlvsBuilder tlvsBuilder = new TlvsBuilder();
 255                 tlvsBuilder.setSymbolicPathName(
 256                     new SymbolicPathNameBuilder().setPathName(new SymbolicPathName(input.getName().getBytes(Charsets.UTF_8))).build());
 257                 if (inputLsp.getTlvs() != null) {
 258                     tlvsBuilder.setVsTlv(inputLsp.getTlvs().getVsTlv());
 259                 }
 260
 261                 final SrpBuilder srpBuilder = new SrpBuilder();
 262                 srpBuilder.setOperationId(nextRequest());
 263                 srpBuilder.setProcessingRule(Boolean.TRUE);
 264                 if (!isDefaultPST(args.getPathSetupType())) {
 265                     srpBuilder.setTlvs(
 266                             new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.srp.TlvsBuilder()
 267                                 .setPathSetupType(args.getPathSetupType()).build());
 268                 }
 269                 rb.setSrp(srpBuilder.build());
 270
 271                 rb.setLsp(new LspBuilder().setAdministrative(inputLsp.isAdministrative()).setDelegate(inputLsp.isDelegate()).setPlspId(
 272                     new PlspId(0L)).setTlvs(tlvsBuilder.build()).build());
 273
 274                 final PcinitiateMessageBuilder ib = new PcinitiateMessageBuilder(MESSAGE_HEADER);
 275                 ib.setRequests(Collections.singletonList(rb.build()));
 276
 277                 // Send the message
 278                 return sendMessage(new PcinitiateBuilder().setPcinitiateMessage(ib.build()).build(), rb.getSrp().getOperationId(),
 279                     input.getArguments().getMetadata());
 280             }
 281         });
 282     }
 283
 284     @Override
 285     public synchronized ListenableFuture<OperationResult> removeLsp(final RemoveLspArgs input) {
 286         Preconditions.checkArgument(input != null && input.getName() != null && input.getNode() != null, MISSING_XML_TAG);
 287         LOG.trace("RemoveLspArgs {}", input);
 288         // Make sure the LSP exists, we need it for PLSP-ID
 289         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 290         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 291         if (f == null) {
 292             return OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future();
 293         }
 294
 295         return Futures.transform(f, new AsyncFunction<Optional<ReportedLsp>, OperationResult>() {
 296             @Override
 297             public ListenableFuture<OperationResult> apply(final Optional<ReportedLsp> rep) {
 298                 final Lsp reportedLsp = validateReportedLsp(rep, input);
 299                 if (reportedLsp == null) {
 300                     return OperationResults.createUnsent(PCEPErrors.UNKNOWN_PLSP_ID).future();
 301                 }
 302                 // Build the request and send it
 303                 final RequestsBuilder rb = new RequestsBuilder();
 304                 final SrpBuilder srpBuilder = new SrpBuilder().addAugmentation(Srp1.class, new Srp1Builder().setRemove(Boolean.TRUE).build()).setOperationId(nextRequest()).setProcessingRule(Boolean.TRUE);
 305                 final Optional<PathSetupType> maybePST = getPST(rep);
 306                 if (maybePST.isPresent()) {
 307                     srpBuilder.setTlvs(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.srp.TlvsBuilder()
 308                         .setPathSetupType(maybePST.get())
 309                         .build());
 310                 }
 311                 rb.setSrp(srpBuilder.build());
 312                 rb.setLsp(new LspBuilder().setRemove(Boolean.FALSE).setPlspId(reportedLsp.getPlspId()).setDelegate(reportedLsp.isDelegate()).build());
 313
 314                 final PcinitiateMessageBuilder ib = new PcinitiateMessageBuilder(MESSAGE_HEADER);
 315                 ib.setRequests(Collections.singletonList(rb.build()));
 316                 return sendMessage(new PcinitiateBuilder().setPcinitiateMessage(ib.build()).build(), rb.getSrp().getOperationId(), null);
 317             }
 318         });
 319     }
 320
 321     @Override
 322     public synchronized ListenableFuture<OperationResult> updateLsp(final UpdateLspArgs input) {
 323         Preconditions.checkArgument(input != null && input.getName() != null && input.getNode() != null && input.getArguments() != null, MISSING_XML_TAG);
 324         LOG.trace("UpdateLspArgs {}", input);
 325         // Make sure the LSP exists
 326         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 327         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 328         if (f == null) {
 329             return OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future();
 330         }
 331
 332         return Futures.transform(f, new AsyncFunction<Optional<ReportedLsp>, OperationResult>() {
 333             @Override
 334             public ListenableFuture<OperationResult> apply(final Optional<ReportedLsp> rep) {
 335                 final Lsp reportedLsp = validateReportedLsp(rep, input);
 336                 if (reportedLsp == null) {
 337                     return OperationResults.createUnsent(PCEPErrors.UNKNOWN_PLSP_ID).future();
 338                 }
 339                 // create mandatory objects
 340                 final Arguments3 args = input.getArguments().getAugmentation(Arguments3.class);
 341                 final SrpBuilder srpBuilder = new SrpBuilder();
 342                 srpBuilder.setOperationId(nextRequest());
 343                 srpBuilder.setProcessingRule(Boolean.TRUE);
 344                 if (args != null && args.getPathSetupType() != null) {
 345                     if (!isDefaultPST(args.getPathSetupType())) {
 346                         srpBuilder.setTlvs(
 347                                 new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.srp.TlvsBuilder()
 348                                     .setPathSetupType(args.getPathSetupType()).build());
 349                     }
 350                 } else {
 351                     final Optional<PathSetupType> maybePST = getPST(rep);
 352                     if (maybePST.isPresent()) {
 353                         srpBuilder.setTlvs(
 354                                 new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.srp.TlvsBuilder()
 355                                     .setPathSetupType(maybePST.get()).build());
 356                     }
 357                 }
 358                 final Srp srp = srpBuilder.build();
 359
 360                 final Lsp inputLsp = args.getLsp();
 361                 final Lsp lsp = (inputLsp != null) ?
 362                     new LspBuilder().setPlspId(reportedLsp.getPlspId()).setDelegate((inputLsp.isDelegate() != null) ? inputLsp.isDelegate() : false).setTlvs(inputLsp.getTlvs()).setAdministrative((inputLsp.isAdministrative() != null) ? inputLsp.isAdministrative() : false).build()
 363                     : new LspBuilder().setPlspId(reportedLsp.getPlspId()).build();
 364                 Message msg = null;
 365                 // the D bit that was reported decides the type of PCE message sent
 366                 Preconditions.checkNotNull(reportedLsp.isDelegate());
 367                 if (reportedLsp.isDelegate()) {
 368                     // we already have delegation, send update
 369                     final UpdatesBuilder rb = new UpdatesBuilder();
 370                     rb.setSrp(srp);
 371                     rb.setLsp(lsp);
 372                     final PathBuilder pb = new PathBuilder();
 373                     pb.fieldsFrom(input.getArguments());
 374                     rb.setPath(pb.build());
 375                     final PcupdMessageBuilder ub = new PcupdMessageBuilder(MESSAGE_HEADER);
 376                     ub.setUpdates(Collections.singletonList(rb.build()));
 377                     msg = new PcupdBuilder().setPcupdMessage(ub.build()).build();
 378                 } else {
 379                     // we want to revoke delegation, different type of message
 380                     // is sent because of specification by Siva
 381                     // this message is also sent, when input delegate bit is set to 0
 382                     // generating an error in PCC
 383                     final List<Requests> reqs = new ArrayList<>();
 384                     reqs.add(new RequestsBuilder().setSrp(srp).setLsp(lsp).build());
 385                     final PcinitiateMessageBuilder ib = new PcinitiateMessageBuilder();
 386                     ib.setRequests(reqs);
 387                     msg = new PcinitiateBuilder().setPcinitiateMessage(ib.build()).build();
 388                 }
 389                 return sendMessage(msg, srp.getOperationId(), input.getArguments().getMetadata());
 390             }
 391         });
 392     }
 393
 394     @Override
 395     public synchronized ListenableFuture<OperationResult> ensureLspOperational(final EnsureLspOperationalInput input) {
 396         Preconditions.checkArgument(input != null && input.getName() != null && input.getNode() != null && input.getArguments() != null, MISSING_XML_TAG);
 397         final OperationalStatus op;
 398         final Arguments1 aa = input.getArguments().getAugmentation(Arguments1.class);
 399         if (aa != null) {
 400             op = aa.getOperational();
 401         } else {
 402             op = null;
 403         }
 404
 405         // Make sure the LSP exists
 406         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 407         LOG.debug("Checking if LSP {} has operational state {}", lsp, op);
 408         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 409         if (f == null) {
 410             return OperationResults.createUnsent(PCEPErrors.LSP_INTERNAL_ERROR).future();
 411         }
 412
 413         return Futures.transform(f, new Function<Optional<ReportedLsp>, OperationResult>() {
 414             @Override
 415             public OperationResult apply(final Optional<ReportedLsp> rep) {
 416                 if (!rep.isPresent()) {
 417                     LOG.debug("Node {} does not contain LSP {}", input.getNode(), input.getName());
 418                     return OperationResults.UNSENT;
 419                 }
 420
 421                 // check if at least one of the paths has the same status as requested
 422                 boolean operational = false;
 423                 for (final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.pcep.client.attributes.path.computation.client.reported.lsp.Path p : rep.get().getPath()) {
 424                     final Path1 p1 = p.getAugmentation(Path1.class);
 425                     if (p1 == null) {
 426                         LOG.warn("Node {} LSP {} does not contain data", input.getNode(), input.getName());
 427                         return OperationResults.UNSENT;
 428                     }
 429                     final Lsp l = p1.getLsp();
 430                     if (l.getOperational().equals(op)) {
 431                         operational = true;
 432                     }
 433                 }
 434
 435                 return operational ? OperationResults.SUCCESS : OperationResults.UNSENT;
 436             }
 437         });
 438     }
 439
 440     @Override
 441     protected Lsp validateReportedLsp(final Optional<ReportedLsp> rep, final LspId input) {
 442         if (!rep.isPresent()) {
 443             LOG.debug("Node {} does not contain LSP {}", input.getNode(), input.getName());
 444             return null;
 445         }
 446         // it doesn't matter how many lsps there are in the path list, we only need data that is the same in each path
 447         final Path1 ra = rep.get().getPath().get(0).getAugmentation(Path1.class);
 448         Preconditions.checkState(ra != null, "Reported LSP reported null from data-store.");
 449         final Lsp reportedLsp = ra.getLsp();
 450         Preconditions.checkState(reportedLsp != null, "Reported LSP does not contain LSP object.");
 451         return reportedLsp;
 452     }
 453
 454     private Optional<PathSetupType> getPST(final Optional<ReportedLsp> rep) {
 455         if (rep.isPresent()) {
 456             final Path1 path1 = rep.get().getPath().get(0).getAugmentation(Path1.class);
 457             if (path1 != null) {
 458                 final PathSetupType pst = path1.getPathSetupType();
 459                 if (!isDefaultPST(pst)) {
 460                     return Optional.of(pst);
 461                 }
 462             }
 463         }
 464         return Optional.absent();
 465     }
 466
 467     private static boolean isDefaultPST(final PathSetupType pst) {
 468         if (pst != null && pst.getPst() != null && pst.getPst().shortValue() != 0) {
 469             return false;
 470         }
 471         return true;
 472     }
 473
 474     private static PeerCapabilities getCapabilities(final Stateful stateful) {
 475         final PeerCapabilities capa = new PeerCapabilities();
 476         capa.setStateful(true);
 477         if (stateful.isLspUpdateCapability() != null) {
 478             capa.setActive(stateful.isLspUpdateCapability());
 479         }
 480         final Stateful1 stateful1 = stateful.getAugmentation(Stateful1.class);
 481         if (stateful1 != null && stateful1.isInitiation() != null) {
 482             capa.setInstantiation(stateful1.isInitiation());
 483         }
 484         return capa;
 485     }
 486 }