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