renderers/vpp/src/main/java/org/opendaylight/groupbasedpolicy/renderer/vpp/policy/BridgeDomainManagerImpl.java

   1 /*
   2  * Copyright (c) 2016 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
   9 package org.opendaylight.groupbasedpolicy.renderer.vpp.policy;
  10
  11 import java.util.Collection;
  12 import java.util.Collections;
  13 import java.util.concurrent.ExecutionException;
  14 import java.util.concurrent.TimeoutException;
  15
  16 import javax.annotation.Nonnull;
  17 import javax.annotation.Nullable;
  18
  19 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  20 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  21 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  22 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification.ModificationType;
  23 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  24 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  25 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  26 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  27 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  28 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  29 import org.opendaylight.groupbasedpolicy.renderer.vpp.api.BridgeDomainManager;
  30 import org.opendaylight.groupbasedpolicy.renderer.vpp.config.ConfigUtil;
  31 import org.opendaylight.groupbasedpolicy.renderer.vpp.util.VppIidFactory;
  32 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.Config;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.bridge.domain.base.attributes.PhysicalLocationRef;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.GbpBridgeDomain;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.GbpBridgeDomainKey;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2.types.rev130827.VlanId;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev170315.VxlanVni;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev170315.bridge.domains.state.BridgeDomain;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev170315.bridge.domains.state.BridgeDomainKey;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.status.rev170327.BridgeDomainStatusAugmentation;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.status.rev170327.BridgeDomainStatusFields.BridgeDomainStatus;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.NodeVbridgeAugment;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.TopologyTypesVbridgeAugment;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.TopologyTypesVbridgeAugmentBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.TopologyVbridgeAugment;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.TopologyVbridgeAugmentBuilder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.node.BridgeMember;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.topology.types.VbridgeTopologyBuilder;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.tunnel.vlan.rev170327.NodeVbridgeVlanAugment;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.tunnel.vlan.rev170327.NodeVbridgeVlanAugmentBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.tunnel.vlan.rev170327.TunnelTypeVlan;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.tunnel.vlan.rev170327.network.topology.topology.tunnel.parameters.VlanNetworkParametersBuilder;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.tunnel.vxlan.rev170327.TunnelTypeVxlan;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.tunnel.vxlan.rev170327.network.topology.topology.tunnel.parameters.VxlanTunnelParametersBuilder;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.vlan.rev170315._802dot1q;
  57 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  58 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  59 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  60 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
  61 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  62 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  63 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeBuilder;
  64 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  65 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypes;
  66 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypesBuilder;
  67 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.node.attributes.SupportingNodeBuilder;
  68 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  69 import org.opendaylight.yangtools.yang.binding.DataObject;
  70 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  71 import org.slf4j.Logger;
  72 import org.slf4j.LoggerFactory;
  73
  74 import com.google.common.base.Optional;
  75 import com.google.common.base.Preconditions;
  76 import com.google.common.util.concurrent.AsyncFunction;
  77 import com.google.common.util.concurrent.CheckedFuture;
  78 import com.google.common.util.concurrent.FutureCallback;
  79 import com.google.common.util.concurrent.Futures;
  80 import com.google.common.util.concurrent.ListenableFuture;
  81 import com.google.common.util.concurrent.SettableFuture;
  82
  83 public class BridgeDomainManagerImpl implements BridgeDomainManager {
  84
  85     private static final Logger LOG = LoggerFactory.getLogger(BridgeDomainManagerImpl.class);
  86     private static final TopologyId SUPPORTING_TOPOLOGY_NETCONF = new TopologyId("topology-netconf");
  87     private static final TopologyTypes VBRIDGE_TOPOLOGY_TYPE = new TopologyTypesBuilder().addAugmentation(
  88             TopologyTypesVbridgeAugment.class,
  89             new TopologyTypesVbridgeAugmentBuilder().setVbridgeTopology(new VbridgeTopologyBuilder().build()).build())
  90             .build();
  91     private final DataBroker dataProvider;
  92
  93     private static final class ListenableFutureSetter<T extends DataObject>
  94             implements ClusteredDataTreeChangeListener<T> {
  95
  96         private static final Logger LOG = LoggerFactory.getLogger(ListenableFutureSetter.class);
  97         private final SettableFuture<Void> future;
  98         private final ModificationType modificationForFutureSet;
  99         private final DataTreeIdentifier<T> iid;
 100         private final ListenerRegistration<ListenableFutureSetter<T>> registeredListener;
 101
 102         private ListenableFutureSetter(DataBroker dataProvider, SettableFuture<Void> future,
 103                                        DataTreeIdentifier<T> iid, ModificationType modificationForFutureSet) {
 104             this.future = Preconditions.checkNotNull(future);
 105             Preconditions.checkArgument(!future.isDone());
 106             this.modificationForFutureSet = Preconditions.checkNotNull(modificationForFutureSet);
 107             this.iid = Preconditions.checkNotNull(iid);
 108             if(!ConfigUtil.getInstance().isL3FlatEnabled()) {
 109                 registeredListener = dataProvider.registerDataTreeChangeListener(iid, this);
 110                 LOG.debug("Registered listener for path {}", iid.getRootIdentifier());
 111             } else {
 112                 throw new IllegalStateException("L3 flat is enabled, BD manager should not even be registering now!");
 113             }
 114         }
 115
 116         @Override
 117         public void onDataTreeChanged(@Nonnull final Collection<DataTreeModification<T>> changes) {
 118             changes.forEach(modification -> {
 119                 final DataObjectModification<T> rootNode = modification.getRootNode();
 120                 final ModificationType modificationType = rootNode.getModificationType();
 121                 if (modificationType == modificationForFutureSet) {
 122                     LOG.debug("{} in OPER DS: {}", modificationType.name(), iid.getRootIdentifier());
 123                     final T data = rootNode.getDataAfter();
 124                     // If waiting for bridge domain creation, do more specific check about BD status
 125                     if (data != null && data instanceof BridgeDomain) {
 126                         final BridgeDomain domain = (BridgeDomain) data;
 127                         final BridgeDomainStatusAugmentation statusAugment =
 128                                 domain.getAugmentation(BridgeDomainStatusAugmentation.class);
 129                         final BridgeDomainStatus status = statusAugment.getBridgeDomainStatus();
 130                         switch (status) {
 131                             case Started: {
 132                                 LOG.debug("Bridge domain {} started", domain.getName());
 133                                 unregister(future.set(null));
 134                                 break;
 135                             }
 136                             case Failed: {
 137                                 LOG.warn("Bridge domain {} failed to start", domain.getName());
 138                                 unregister(future.set(null));
 139                                 break;
 140                             }
 141                             case Starting:
 142                             case Stopped: {
 143                                 LOG.debug("Bridge domain {} status changed to {}", domain.getName(), status.getName());
 144                                 break;
 145                             }
 146                         }
 147                     } else {
 148                         unregister(future.set(null));
 149                     }
 150                 }
 151             });
 152         }
 153
 154         private void unregister(boolean _true) {
 155             if (_true) {
 156                 LOG.debug("Unregistering listener for path {}", iid.getRootIdentifier());
 157                 if (registeredListener != null) {
 158                     registeredListener.close();
 159                 }
 160             }
 161         }
 162     }
 163
 164     public BridgeDomainManagerImpl(DataBroker dataProvider) {
 165         this.dataProvider = Preconditions.checkNotNull(dataProvider);
 166     }
 167
 168     private static NodeBuilder createBasicVppNodeBuilder(NodeId nodeId) {
 169         return new NodeBuilder().setNodeId(nodeId).setSupportingNode(Collections.singletonList(
 170                 new SupportingNodeBuilder().setTopologyRef(SUPPORTING_TOPOLOGY_NETCONF).setNodeRef(nodeId).build()));
 171     }
 172
 173     @Override
 174     public ListenableFuture<Void> createVxlanBridgeDomainOnVppNode(@Nonnull final String bridgeDomainName,
 175                                                                    @Nonnull final VxlanVni vni,
 176                                                                    @Nonnull final NodeId vppNodeId) {
 177         TopologyVbridgeAugment topologyAug = new TopologyVbridgeAugmentBuilder().setTunnelType(TunnelTypeVxlan.class)
 178                 .setArpTermination(false)
 179                 .setFlood(true)
 180                 .setForward(true)
 181                 .setLearn(true)
 182                 .setUnknownUnicastFlood(true)
 183                 .setTunnelParameters(new VxlanTunnelParametersBuilder().setVni(vni).build())
 184                 .build();
 185         return createBridgeDomainOnVppNode(bridgeDomainName, topologyAug,
 186                 createBasicVppNodeBuilder(vppNodeId).build());
 187     }
 188
 189     @Override
 190     public ListenableFuture<Void> createVlanBridgeDomainOnVppNode(@Nonnull final String bridgeDomainName,
 191                                                                   @Nonnull final VlanId vlanId,
 192                                                                   @Nonnull final NodeId vppNodeId) {
 193         TopologyVbridgeAugment topologyAug = new TopologyVbridgeAugmentBuilder().setTunnelType(TunnelTypeVlan.class)
 194                 .setArpTermination(false)
 195                 .setFlood(true)
 196                 .setForward(true)
 197                 .setLearn(true)
 198                 .setUnknownUnicastFlood(true)
 199                 .setTunnelParameters(
 200                         new VlanNetworkParametersBuilder().setVlanId(vlanId).setVlanType(_802dot1q.class).build())
 201                 .build();
 202         InstanceIdentifier<GbpBridgeDomain> bridgeDomainConfigIid = InstanceIdentifier.builder(Config.class)
 203                 .child(GbpBridgeDomain.class, new GbpBridgeDomainKey(bridgeDomainName))
 204                 .build();
 205         ReadOnlyTransaction rTx = dataProvider.newReadOnlyTransaction();
 206         CheckedFuture<Optional<GbpBridgeDomain>, ReadFailedException> futureTopology =
 207                 rTx.read(LogicalDatastoreType.CONFIGURATION, bridgeDomainConfigIid);
 208         rTx.close();
 209         return Futures.transform(futureTopology, new AsyncFunction<Optional<GbpBridgeDomain>, Void>() {
 210
 211             @Override
 212             public ListenableFuture<Void> apply(@Nonnull Optional<GbpBridgeDomain> optBridgeDomainConf) throws Exception {
 213                 if (optBridgeDomainConf.isPresent() && optBridgeDomainConf.get().getPhysicalLocationRef() != null) {
 214                     for (PhysicalLocationRef ref : optBridgeDomainConf.get().getPhysicalLocationRef()) {
 215                         if (!ref.getNodeId().equals(vppNodeId)) {
 216                             LOG.debug("Node {} is not referenced node, skipping", ref.getNodeId());
 217                             continue;
 218                         }
 219                         if (ref.getInterface() != null && ref.getInterface().size() > 0) {
 220                             NodeVbridgeVlanAugment vppNodeVlanAug = new NodeVbridgeVlanAugmentBuilder()
 221                                     .setSuperInterface(ref.getInterface().get(0)).build();
 222                             Node vppNode = createBasicVppNodeBuilder(vppNodeId)
 223                                     .addAugmentation(NodeVbridgeVlanAugment.class, vppNodeVlanAug).build();
 224                             return createBridgeDomainOnVppNode(bridgeDomainName, topologyAug, vppNode);
 225                         }
 226                     }
 227                 }
 228                 return Futures.immediateFailedFuture(
 229                         new Throwable("Failed to apply config for VLAN bridge domain " + bridgeDomainName));
 230             }
 231         });
 232     }
 233
 234     /**
 235      * Method checks whether bridge domain already exists in topology under its {@link TopologyId}. If not, BD is
 236      * written into CONF DS (request for VBD) and registers listener which awaits result from VBD. Result can be
 237      * checked in OPER DS as a {@link BridgeDomainStatus}. If status is {@link BridgeDomainStatus#Started}, listener
 238      * unregisters itself and bridge domain creation in VBD is considered successful.
 239      * <p>
 240      * Next part creates request for {@link BridgeMember} in topology CONF DS and registers listener listening on
 241      * topology OPER DS. If bridge member is created in VBD, listener is closed.
 242      * <p>
 243      * This process has limited time, limit is defined in {@link ForwardingManager#WAIT_FOR_BD_PROCESSING} to prevent
 244      * stuck if VBD processing fails in some point.
 245      *
 246      * @param bridgeDomainName serving as a topology-id
 247      * @param vBridgeAug       augmented data in BD
 248      * @param vppNode          transformed into bridge member
 249      * @return composed future which serves as a marker for caller method that the computation is done. If future is
 250      * not returned in time, {@link TimeoutException} will be thrown there.
 251      */
 252     private ListenableFuture<Void> createBridgeDomainOnVppNode(@Nonnull final String bridgeDomainName,
 253                                                                @Nonnull final TopologyVbridgeAugment vBridgeAug,
 254                                                                @Nonnull final Node vppNode) {
 255         LOG.info("Creating bridge domain {} on VPP node {}", bridgeDomainName, vppNode);
 256         final TopologyKey topologyKey = new TopologyKey(new TopologyId(bridgeDomainName));
 257         final ReadOnlyTransaction rTx = dataProvider.newReadOnlyTransaction();
 258         final InstanceIdentifier<Topology> topologyIid = VppIidFactory.getTopologyIid(topologyKey);
 259         final CheckedFuture<Optional<Topology>, ReadFailedException> optTopology =
 260                 rTx.read(LogicalDatastoreType.CONFIGURATION, topologyIid);
 261         rTx.close();
 262         return Futures.transform(optTopology, new AsyncFunction<Optional<Topology>, Void>() {
 263             @Override
 264             public ListenableFuture<Void> apply(@Nonnull final Optional<Topology> optTopology)
 265                     throws InterruptedException, ExecutionException {
 266                 // Topology
 267                 final SettableFuture<Void> topologyFuture = SettableFuture.create();
 268                 if (!optTopology.isPresent()) {
 269                     final WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
 270                     final Topology topology = new TopologyBuilder().setKey(topologyKey)
 271                             .setTopologyTypes(VBRIDGE_TOPOLOGY_TYPE)
 272                             .addAugmentation(TopologyVbridgeAugment.class, vBridgeAug)
 273                             .build();
 274                     wTx.put(LogicalDatastoreType.CONFIGURATION, topologyIid, topology, true);
 275                     Futures.addCallback(wTx.submit(), new FutureCallback<Void>() {
 276
 277                         @Override
 278                         public void onSuccess(@Nullable final Void result) {
 279                             final InstanceIdentifier<BridgeDomain> bridgeDomainStateIid =
 280                                     VppIidFactory.getBridgeDomainStateIid(new BridgeDomainKey(bridgeDomainName));
 281                             LOG.debug("Adding a listener on bridge domain state", bridgeDomainName);
 282                             final DataTreeIdentifier<BridgeDomain> bridgeDomainStateIidDTI = new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL,
 283                                     bridgeDomainStateIid);
 284                             new ListenableFutureSetter<>(dataProvider, topologyFuture, bridgeDomainStateIidDTI, ModificationType.WRITE);
 285                         }
 286
 287                         @Override
 288                         public void onFailure(@Nonnull Throwable t) {
 289                             LOG.warn("Request create topology for VBD was not stored to CONF DS. {}", topologyIid, t);
 290                             topologyFuture.setException(new Exception("Cannot send request to VBD."));
 291                         }
 292                     });
 293                 } else {
 294                     topologyFuture.set(null);
 295                     LOG.info("Bridge domain {} already exists", optTopology.get().getTopologyId());
 296                 }
 297                 return Futures.transform(topologyFuture, new AsyncFunction<Void, Void>() {
 298                     @Override
 299                     public ListenableFuture<Void> apply(@Nonnull Void topologyInput) throws Exception {
 300                         // Bridge member
 301                         final SettableFuture<Void> futureBridgeMember = SettableFuture.create();
 302                         final InstanceIdentifier<Node> nodeIid = VppIidFactory.getNodeIid(topologyKey, vppNode.getKey());
 303                         LOG.debug("Adding node {} to bridge domain {}", vppNode.getKey(), topologyKey.getTopologyId());
 304                         final WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
 305                         wTx.put(LogicalDatastoreType.CONFIGURATION, nodeIid, vppNode);
 306                         Futures.addCallback(wTx.submit(), new FutureCallback<Void>() {
 307
 308                             @Override
 309                             public void onSuccess(@Nullable final Void _void) {
 310                                 final DataTreeIdentifier<BridgeMember> bridgeMemberIid =
 311                                         new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL,
 312                                                 nodeIid.augmentation(NodeVbridgeAugment.class).child(BridgeMember.class));
 313                                 LOG.debug("Request create node in topology for VBD was stored to CONF DS. {}", nodeIid);
 314                                 new ListenableFutureSetter<>(dataProvider, futureBridgeMember, bridgeMemberIid,
 315                                         ModificationType.WRITE);
 316                             }
 317
 318                             @Override
 319                             public void onFailure(@Nonnull final Throwable t) {
 320                                 LOG.warn("Request create node in topology for VBD was not stored to CONF DS. {}", nodeIid, t);
 321                                 futureBridgeMember.setException(new Exception("Cannot send request to VBD."));
 322                             }
 323                         });
 324                         return futureBridgeMember;
 325                     }
 326                 });
 327             }
 328         });
 329     }
 330
 331     @Override
 332     public ListenableFuture<Void> removeBridgeDomainFromVppNode(@Nonnull final String bridgeDomainName,
 333                                                                 @Nonnull final NodeId vppNode) {
 334         LOG.info("Removing bridge domain {} from VPP node {}", bridgeDomainName, vppNode);
 335         InstanceIdentifier<Topology> topologyIid =
 336                 VppIidFactory.getTopologyIid(new TopologyKey(new TopologyId(bridgeDomainName)));
 337         ReadOnlyTransaction rTx = dataProvider.newReadOnlyTransaction();
 338         Optional<Topology> topologyOpt =
 339                 DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION, topologyIid, rTx);
 340         WriteTransaction wTx = dataProvider.newWriteOnlyTransaction();
 341         InstanceIdentifier<Node> nodeIid =
 342                 VppIidFactory.getNodeIid(new TopologyKey(new TopologyId(bridgeDomainName)), new NodeKey(vppNode));
 343         wTx.delete(LogicalDatastoreType.CONFIGURATION, nodeIid);
 344         if (topologyOpt.isPresent()) {
 345             Topology topology = topologyOpt.get();
 346             if(topology.getNode() == null || topology.getNode().size() == 1) {
 347                 wTx.delete(LogicalDatastoreType.CONFIGURATION, topologyIid);
 348             }
 349         }
 350         SettableFuture<Void> future = SettableFuture.create();
 351         Futures.addCallback(wTx.submit(), new FutureCallback<Void>() {
 352
 353             @Override
 354             public void onSuccess(Void result) {
 355                 DataTreeIdentifier<BridgeMember> bridgeMemberIid =
 356                         new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL,
 357                                 nodeIid.augmentation(NodeVbridgeAugment.class).child(BridgeMember.class));
 358                 LOG.debug("Request delete node in topology for VBD was stored to CONF DS. {}", nodeIid);
 359                 new ListenableFutureSetter<>(dataProvider, future, bridgeMemberIid, ModificationType.DELETE);
 360             }
 361
 362             @Override
 363             public void onFailure(@Nonnull Throwable t) {
 364                 LOG.warn("Request delete node in topology for VBD was not stored to CONF DS. {}", nodeIid, t);
 365                 future.setException(new Exception("Cannot send request to VBD."));
 366             }
 367         });
 368         return future;
 369     }
 370 }