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