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