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.rsvp.rev130820.LspId;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspArgs;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.EnsureLspOperationalInput;
  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     @Override
 108     protected boolean onMessage(final MessageContext ctx, final Message message) {
 109         if (message instanceof PcerrMessage) {
 110             final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.PcerrMessage errMsg = ((PcerrMessage) message).getPcerrMessage();
 111             if (errMsg.getErrorType() instanceof StatefulCase) {
 112                 final StatefulCase stat = (StatefulCase)errMsg.getErrorType();
 113                 for (final Srps srps : stat.getStateful().getSrps()) {
 114                     final SrpIdNumber id = srps.getSrp().getOperationId();
 115                     if (id.getValue() != 0) {
 116                         final PCEPRequest req = removeRequest(id);
 117                         if (req != null) {
 118                             req.done(OperationResults.createFailed(errMsg.getErrors()));
 119                         } else {
 120                             LOG.warn("Request ID {} not found in outstanding DB", id);
 121                         }
 122                     }
 123                 }
 124             } else {
 125                 LOG.warn("Unhandled PCErr message {}.", errMsg);
 126                 return true;
 127             }
 128             return false;
 129         }
 130         if (!(message instanceof PcrptMessage)) {
 131             return true;
 132         }
 133
 134         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcrpt.message.PcrptMessage rpt = ((PcrptMessage) message).getPcrptMessage();
 135         for (final Reports report : rpt.getReports()) {
 136             final Lsp lsp = report.getLsp();
 137             final PlspId plspid = lsp.getPlspId();
 138
 139             if (!lsp.isSync() && (lsp.getPlspId() == null || plspid.getValue() == 0)) {
 140                 stateSynchronizationAchieved(ctx);
 141                 continue;
 142             }
 143
 144             final ReportedLspBuilder rlb = new ReportedLspBuilder();
 145
 146             boolean solicited = false;
 147
 148             final Srp srp = report.getSrp();
 149             if (srp != null) {
 150                 final SrpIdNumber id = srp.getOperationId();
 151                 if (id.getValue() != 0) {
 152                     solicited = true;
 153
 154                     switch (lsp.getOperational()) {
 155                     case Active:
 156                     case Down:
 157                     case Up:
 158                         final PCEPRequest req = removeRequest(id);
 159                         if (req != null) {
 160                             LOG.debug("Request {} resulted in LSP operational state {}", id, lsp.getOperational());
 161                             rlb.setMetadata(req.getMetadata());
 162                             ctx.resolveRequest(req);
 163                         } else {
 164                             LOG.warn("Request ID {} not found in outstanding DB", id);
 165                         }
 166                         break;
 167                     case GoingDown:
 168                     case GoingUp:
 169                         // These are transitive states, so we don't have to do anything, as they will be followed
 170                         // up...
 171                         break;
 172                     }
 173                     // if remove flag is set in SRP object, remove the tunnel immediately
 174                     if (srp.getAugmentation(Srp1.class) != null) {
 175                         final Srp1 initiatedSrp = srp.getAugmentation(Srp1.class);
 176                         if (initiatedSrp.isRemove()) {
 177                             super.removeLsp(ctx, plspid);
 178                             return false;
 179                         }
 180                     }
 181                 }
 182             }
 183             final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.lsp.Tlvs tlvs = report.getLsp().getTlvs();
 184             final String name;
 185             if (tlvs != null && tlvs.getSymbolicPathName() != null) {
 186                 name = Charsets.UTF_8.decode(ByteBuffer.wrap(tlvs.getSymbolicPathName().getPathName().getValue())).toString();
 187             } else {
 188                 name = null;
 189             }
 190             LspId lspid = null;
 191             if (tlvs != null && tlvs.getLspIdentifiers() != null) {
 192                 lspid = tlvs.getLspIdentifiers().getLspId();
 193             }
 194             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();
 195             if (report.getPath() != null) {
 196                 pb.fieldsFrom(report.getPath());
 197             }
 198             // LSP is mandatory (if there is none, parser will throw an exception)
 199             // this is to ensure a path will be created at any rate
 200             pb.addAugmentation(Path1.class, new Path1Builder().setLsp(report.getLsp()).build());
 201             pb.setLspId(lspid);
 202             rlb.setPath(Collections.singletonList(pb.build()));
 203             updateLsp(ctx, plspid, name, rlb, solicited, lsp.isRemove());
 204             LOG.debug("LSP {} updated", lsp);
 205         }
 206         return false;
 207     }
 208
 209     private SrpIdNumber nextRequest() {
 210         return new SrpIdNumber(this.requestId.getAndIncrement());
 211     }
 212
 213     @Override
 214     public synchronized ListenableFuture<OperationResult> addLsp(final AddLspArgs input) {
 215         Preconditions.checkArgument(input != null && input.getName() != null && input.getNode() != null && input.getArguments() != null, MISSING_XML_TAG);
 216         LOG.trace("AddLspArgs {}", input);
 217         // Make sure there is no such LSP
 218         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 219         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 220
 221         return Futures.transform(f, new AsyncFunction<Optional<ReportedLsp>, OperationResult>() {
 222             @Override
 223             public ListenableFuture<OperationResult> apply(final Optional<ReportedLsp> rep) {
 224                 if (rep.isPresent()) {
 225                     LOG.debug("Node {} already contains lsp {} at {}", input.getNode(), input.getName(), lsp);
 226                     return OperationResults.UNSENT.future();
 227                 }
 228
 229                 // Build the request
 230                 final RequestsBuilder rb = new RequestsBuilder();
 231                 final Arguments2 args = input.getArguments().getAugmentation(Arguments2.class);
 232                 Preconditions.checkArgument(args != null, "Input is missing operational tag.");
 233                 final Lsp inputLsp = args.getLsp();
 234                 Preconditions.checkArgument(inputLsp != null, "Reported LSP does not contain LSP object.");
 235
 236                 rb.fieldsFrom(input.getArguments());
 237
 238                 final TlvsBuilder tlvsBuilder = new TlvsBuilder();
 239                 tlvsBuilder.setSymbolicPathName(
 240                     new SymbolicPathNameBuilder().setPathName(new SymbolicPathName(input.getName().getBytes(Charsets.UTF_8))).build());
 241                 if (inputLsp.getTlvs() != null) {
 242                     tlvsBuilder.setVsTlv(inputLsp.getTlvs().getVsTlv());
 243                 }
 244
 245                 rb.setSrp(new SrpBuilder().setOperationId(nextRequest()).setProcessingRule(Boolean.TRUE).build());
 246                 rb.setLsp(new LspBuilder().setAdministrative(inputLsp.isAdministrative()).setDelegate(inputLsp.isDelegate()).setPlspId(
 247                     new PlspId(0L)).setTlvs(tlvsBuilder.build()).build());
 248
 249                 final PcinitiateMessageBuilder ib = new PcinitiateMessageBuilder(MESSAGE_HEADER);
 250                 ib.setRequests(Collections.singletonList(rb.build()));
 251
 252                 // Send the message
 253                 return sendMessage(new PcinitiateBuilder().setPcinitiateMessage(ib.build()).build(), rb.getSrp().getOperationId(),
 254                     input.getArguments().getMetadata());
 255             }
 256         });
 257     }
 258
 259     @Override
 260     public synchronized ListenableFuture<OperationResult> removeLsp(final RemoveLspArgs input) {
 261         Preconditions.checkArgument(input != null && input.getName() != null && input.getNode() != null, MISSING_XML_TAG);
 262         LOG.trace("RemoveLspArgs {}", input);
 263         // Make sure the LSP exists, we need it for PLSP-ID
 264         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 265         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 266
 267         return Futures.transform(f, new AsyncFunction<Optional<ReportedLsp>, OperationResult>() {
 268             @Override
 269             public ListenableFuture<OperationResult> apply(final Optional<ReportedLsp> rep) {
 270                 if (!rep.isPresent()) {
 271                     LOG.debug("Node {} does not contain LSP {}", input.getNode(), input.getName());
 272                     return OperationResults.UNSENT.future();
 273                 }
 274
 275                 // it doesn't matter how many lsps there are in the path list, we only need delegate & plspid that is the same in each path
 276                 final Path1 ra = rep.get().getPath().get(0).getAugmentation(Path1.class);
 277                 Preconditions.checkState(ra != null, "Reported LSP reported null from data-store.");
 278                 final Lsp reportedLsp = ra.getLsp();
 279                 Preconditions.checkState(reportedLsp != null, "Reported LSP does not contain LSP object.");
 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                 if (!rep.isPresent()) {
 305                     LOG.debug("Node {} does not contain LSP {}", input.getNode(), input.getName());
 306                     return OperationResults.UNSENT.future();
 307                 }
 308
 309                 // it doesn't matter how many lsps there are in the path list, we only need plspid that is the same in each path
 310                 final Path1 ra = rep.get().getPath().get(0).getAugmentation(Path1.class);
 311                 Preconditions.checkState(ra != null, "Reported LSP reported null from data-store.");
 312                 final Lsp reportedLsp = ra.getLsp();
 313                 Preconditions.checkState(reportedLsp != null, "Reported LSP does not contain LSP object.");
 314
 315                 // create mandatory objects
 316                 final Srp srp = new SrpBuilder().setOperationId(nextRequest()).setProcessingRule(Boolean.TRUE).build();
 317
 318                 final Lsp inputLsp = input.getArguments().getAugmentation(Arguments3.class).getLsp();
 319                 Lsp lsp = null;
 320                 if (inputLsp != null) {
 321                     lsp = new LspBuilder().setPlspId(reportedLsp.getPlspId()).setDelegate((inputLsp.isDelegate() != null) ? inputLsp.isDelegate() : false).setTlvs(inputLsp.getTlvs()).setAdministrative((inputLsp.isAdministrative() != null) ? inputLsp.isAdministrative() : false).build();
 322                 } else {
 323                     lsp = new LspBuilder().setPlspId(reportedLsp.getPlspId()).build();
 324                 }
 325                 Message msg = null;
 326                 // the D bit that was reported decides the type of PCE message sent
 327                 Preconditions.checkNotNull(reportedLsp.isDelegate());
 328                 if (reportedLsp.isDelegate()) {
 329                     // we already have delegation, send update
 330                     final UpdatesBuilder rb = new UpdatesBuilder();
 331                     rb.setSrp(srp);
 332                     rb.setLsp(lsp);
 333                     final PathBuilder pb = new PathBuilder();
 334                     pb.fieldsFrom(input.getArguments());
 335                     rb.setPath(pb.build());
 336                     final PcupdMessageBuilder ub = new PcupdMessageBuilder(MESSAGE_HEADER);
 337                     ub.setUpdates(Collections.singletonList(rb.build()));
 338                     msg = new PcupdBuilder().setPcupdMessage(ub.build()).build();
 339                 } else {
 340                     // we want to revoke delegation, different type of message
 341                     // is sent because of specification by Siva
 342                     // this message is also sent, when input delegate bit is set to 0
 343                     // generating an error in PCC
 344                     final List<Requests> reqs = new ArrayList<>();
 345                     reqs.add(new RequestsBuilder().setSrp(srp).setLsp(lsp).build());
 346                     final PcinitiateMessageBuilder ib = new PcinitiateMessageBuilder();
 347                     ib.setRequests(reqs);
 348                     msg = new PcinitiateBuilder().setPcinitiateMessage(ib.build()).build();
 349                 }
 350                 return sendMessage(msg, srp.getOperationId(), input.getArguments().getMetadata());
 351             }
 352         });
 353     }
 354
 355     @Override
 356     public synchronized ListenableFuture<OperationResult> ensureLspOperational(final EnsureLspOperationalInput input) {
 357         Preconditions.checkArgument(input != null && input.getName() != null && input.getNode() != null && input.getArguments() != null, MISSING_XML_TAG);
 358         final OperationalStatus op;
 359         final Arguments1 aa = input.getArguments().getAugmentation(Arguments1.class);
 360         if (aa != null) {
 361             op = aa.getOperational();
 362         } else {
 363             op = null;
 364         }
 365
 366         // Make sure the LSP exists
 367         final InstanceIdentifier<ReportedLsp> lsp = lspIdentifier(input.getName());
 368         LOG.debug("Checking if LSP {} has operational state {}", lsp, op);
 369         final ListenableFuture<Optional<ReportedLsp>> f = readOperationalData(lsp);
 370
 371         return Futures.transform(f, new Function<Optional<ReportedLsp>, OperationResult>() {
 372             @Override
 373             public OperationResult apply(final Optional<ReportedLsp> rep) {
 374                 if (!rep.isPresent()) {
 375                     LOG.debug("Node {} does not contain LSP {}", input.getNode(), input.getName());
 376                     return OperationResults.UNSENT;
 377                 }
 378
 379                 // check if at least one of the paths has the same status as requested
 380                 boolean operational = false;
 381                 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()) {
 382                     final Path1 p1 = p.getAugmentation(Path1.class);
 383                     if (p1 == null) {
 384                         LOG.warn("Node {} LSP {} does not contain data", input.getNode(), input.getName());
 385                         return OperationResults.UNSENT;
 386                     }
 387                     final Lsp l = p1.getLsp();
 388                     if (l.getOperational().equals(op)) {
 389                         operational = true;
 390                     }
 391                 }
 392
 393                 return operational ? OperationResults.SUCCESS : OperationResults.UNSENT;
 394             }
 395         });
 396     }
 397 }