bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/AdjRibInWriter.java

   1 /*
   2  * Copyright (c) 2015 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.protocol.bgp.rib.impl;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.VisibleForTesting;
  13 import com.google.common.base.Optional;
  14 import com.google.common.collect.ImmutableMap;
  15 import com.google.common.collect.ImmutableMap.Builder;
  16 import com.google.common.util.concurrent.FluentFuture;
  17 import com.google.common.util.concurrent.FutureCallback;
  18 import com.google.common.util.concurrent.Futures;
  19 import com.google.common.util.concurrent.MoreExecutors;
  20 import java.util.Collection;
  21 import java.util.Collections;
  22 import java.util.HashMap;
  23 import java.util.List;
  24 import java.util.Locale;
  25 import java.util.Map;
  26 import java.util.Map.Entry;
  27 import java.util.Set;
  28 import java.util.concurrent.CountDownLatch;
  29 import java.util.concurrent.ExecutionException;
  30 import java.util.stream.Collectors;
  31 import javax.annotation.Nonnull;
  32 import javax.annotation.Nullable;
  33 import javax.annotation.concurrent.GuardedBy;
  34 import javax.annotation.concurrent.NotThreadSafe;
  35 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  36 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  37 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  38 import org.opendaylight.mdsal.common.api.CommitInfo;
  39 import org.opendaylight.protocol.bgp.rib.impl.ApplicationPeer.RegisterAppPeerListener;
  40 import org.opendaylight.protocol.bgp.rib.impl.spi.PeerTransactionChain;
  41 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
  42 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContextRegistry;
  43 import org.opendaylight.protocol.bgp.rib.spi.IdentifierUtils;
  44 import org.opendaylight.protocol.bgp.rib.spi.PeerRoleUtil;
  45 import org.opendaylight.protocol.bgp.rib.spi.RibSupportUtils;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.SendReceive;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpReachNlri;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpUnreachNlri;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.PeerId;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.PeerRole;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.Peer;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.AdjRibIn;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.AdjRibOut;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.EffectiveRibIn;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.SupportedTables;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.Tables;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Attributes;
  59 import org.opendaylight.yangtools.yang.common.QName;
  60 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  61 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.InstanceIdentifierBuilder;
  62 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  63 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  64 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  65 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
  66 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  67 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  68 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  69 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  70 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  71 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeAttrBuilder;
  72 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
  73 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapNodeBuilder;
  74 import org.slf4j.Logger;
  75 import org.slf4j.LoggerFactory;
  76
  77 /**
  78  * Writer of Adjacency-RIB-In for a single peer. An instance of this object
  79  * is attached to each {@link BGPPeer} and {@link ApplicationPeer}.
  80  */
  81 @NotThreadSafe
  82 final class AdjRibInWriter {
  83
  84     private static final Logger LOG = LoggerFactory.getLogger(AdjRibInWriter.class);
  85
  86     @VisibleForTesting
  87     static final LeafNode<Boolean> ATTRIBUTES_UPTODATE_FALSE = ImmutableNodes.leafNode(QName.create(Attributes.QNAME,
  88             "uptodate"), Boolean.FALSE);
  89     @VisibleForTesting
  90     static final QName PEER_ID_QNAME = QName.create(Peer.QNAME, "peer-id").intern();
  91     private static final LeafNode<Boolean> ATTRIBUTES_UPTODATE_TRUE =
  92             ImmutableNodes.leafNode(ATTRIBUTES_UPTODATE_FALSE.getNodeType(), Boolean.TRUE);
  93     private static final QName PEER_ROLE_QNAME = QName.create(Peer.QNAME, "peer-role").intern();
  94     private static final NodeIdentifier ADJRIBIN = new NodeIdentifier(AdjRibIn.QNAME);
  95     private static final NodeIdentifier ADJRIBOUT = new NodeIdentifier(AdjRibOut.QNAME);
  96     private static final NodeIdentifier EFFRIBIN = new NodeIdentifier(EffectiveRibIn.QNAME);
  97     private static final NodeIdentifier PEER_ID = new NodeIdentifier(PEER_ID_QNAME);
  98     private static final NodeIdentifier PEER_ROLE = new NodeIdentifier(PEER_ROLE_QNAME);
  99     private static final NodeIdentifier PEER_TABLES = new NodeIdentifier(SupportedTables.QNAME);
 100     private static final NodeIdentifier TABLES = new NodeIdentifier(Tables.QNAME);
 101     private static final QName SEND_RECEIVE = QName.create(SupportedTables.QNAME, "send-receive").intern();
 102
 103     // FIXME: is there a utility method to construct this?
 104     private static final ContainerNode EMPTY_ADJRIBIN = Builders.containerBuilder()
 105             .withNodeIdentifier(ADJRIBIN).addChild(ImmutableNodes.mapNodeBuilder(Tables.QNAME).build()).build();
 106     private static final ContainerNode EMPTY_EFFRIBIN = Builders.containerBuilder()
 107             .withNodeIdentifier(EFFRIBIN).addChild(ImmutableNodes.mapNodeBuilder(Tables.QNAME).build()).build();
 108     private static final ContainerNode EMPTY_ADJRIBOUT = Builders.containerBuilder()
 109             .withNodeIdentifier(ADJRIBOUT).addChild(ImmutableNodes.mapNodeBuilder(Tables.QNAME).build()).build();
 110
 111     private final Map<TablesKey, TableContext> tables;
 112     private final YangInstanceIdentifier ribPath;
 113     private final PeerTransactionChain chain;
 114     private final PeerRole role;
 115     @GuardedBy("this")
 116     private final Map<TablesKey, Collection<NodeIdentifierWithPredicates>> staleRoutesRegistry = new HashMap<>();
 117     @GuardedBy("this")
 118     private FluentFuture<? extends CommitInfo> submitted;
 119
 120     private AdjRibInWriter(final YangInstanceIdentifier ribPath, final PeerTransactionChain chain, final PeerRole role,
 121             final Map<TablesKey, TableContext> tables) {
 122         this.ribPath = requireNonNull(ribPath);
 123         this.chain = requireNonNull(chain);
 124         this.tables = requireNonNull(tables);
 125         this.role = requireNonNull(role);
 126     }
 127
 128     /**
 129      * Create a new writer using a transaction chain.
 130      *
 131      * @param role                peer's role
 132      * @param chain               transaction chain  @return A fresh writer instance
 133      */
 134     static AdjRibInWriter create(@Nonnull final YangInstanceIdentifier ribId, @Nonnull final PeerRole role,
 135             @Nonnull final PeerTransactionChain chain) {
 136         return new AdjRibInWriter(ribId, chain, role, Collections.emptyMap());
 137     }
 138
 139     /**
 140      * Transform this writer to a new writer, which is in charge of specified tables.
 141      * Empty tables are created for new entries and old tables are deleted. Once this
 142      * method returns, the old instance must not be reasonably used.
 143      *
 144      * @param newPeerId         new peer BGP identifier
 145      * @param peerPath          path of the peer in the datastore
 146      * @param registry          RIB extension registry
 147      * @param tableTypes        New tables, must not be null
 148      * @param addPathTablesType supported add path tables
 149      * @return New writer
 150      */
 151     AdjRibInWriter transform(final PeerId newPeerId, final YangInstanceIdentifier peerPath,
 152             final RIBSupportContextRegistry registry,
 153             final Set<TablesKey> tableTypes, final Map<TablesKey, SendReceive> addPathTablesType) {
 154         return transform(newPeerId, peerPath, registry, tableTypes, addPathTablesType, null);
 155     }
 156
 157     AdjRibInWriter transform(final PeerId newPeerId, final YangInstanceIdentifier peerPath,
 158             final RIBSupportContextRegistry registry, final Set<TablesKey> tableTypes,
 159             final Map<TablesKey, SendReceive> addPathTablesType,
 160             @Nullable final RegisterAppPeerListener registerAppPeerListener) {
 161         final DOMDataWriteTransaction tx = this.chain.getDomChain().newWriteOnlyTransaction();
 162
 163         createEmptyPeerStructure(newPeerId, peerPath, tx);
 164         final ImmutableMap<TablesKey, TableContext> tb = createNewTableInstances(peerPath, registry, tableTypes,
 165                 addPathTablesType, tx);
 166
 167         tx.commit().addCallback(new FutureCallback<CommitInfo>() {
 168             @Override
 169             public void onSuccess(final CommitInfo result) {
 170                 if (registerAppPeerListener != null) {
 171                     LOG.trace("Application Peer Listener registered");
 172                     registerAppPeerListener.register();
 173                 }
 174             }
 175
 176             @Override
 177             public void onFailure(final Throwable throwable) {
 178                 if (registerAppPeerListener != null) {
 179                     LOG.error("Failed to create Empty Structure, Application Peer Listener won't be registered",
 180                             throwable);
 181                 } else {
 182                     LOG.error("Failed to create Empty Structure", throwable);
 183                 }
 184             }
 185         }, MoreExecutors.directExecutor());
 186         return new AdjRibInWriter(this.ribPath, this.chain, this.role, tb);
 187     }
 188
 189     /**
 190      * Create new table instances, potentially creating their empty entries.
 191      */
 192     private static ImmutableMap<TablesKey, TableContext> createNewTableInstances(
 193             final YangInstanceIdentifier newPeerPath, final RIBSupportContextRegistry registry,
 194             final Set<TablesKey> tableTypes, final Map<TablesKey, SendReceive> addPathTablesType,
 195             final DOMDataWriteTransaction tx) {
 196
 197         final Builder<TablesKey, TableContext> tb = ImmutableMap.builder();
 198         for (final TablesKey tableKey : tableTypes) {
 199             final RIBSupportContext rs = registry.getRIBSupportContext(tableKey);
 200             // TODO: Use returned value once Instance Identifier builder allows for it.
 201             final NodeIdentifierWithPredicates instanceIdentifierKey = RibSupportUtils.toYangTablesKey(tableKey);
 202             if (rs == null) {
 203                 LOG.warn("No support for table type {}, skipping it", tableKey);
 204                 continue;
 205             }
 206             installAdjRibsOutTables(newPeerPath, rs, instanceIdentifierKey, tableKey,
 207                     addPathTablesType.get(tableKey), tx);
 208             installAdjRibInTables(newPeerPath, tableKey, rs, instanceIdentifierKey, tx, tb);
 209         }
 210         return tb.build();
 211     }
 212
 213     private static void installAdjRibInTables(final YangInstanceIdentifier newPeerPath, final TablesKey tableKey,
 214             final RIBSupportContext rs, final NodeIdentifierWithPredicates instanceIdentifierKey,
 215             final DOMDataWriteTransaction tx, final Builder<TablesKey, TableContext> tb) {
 216         // We will use table keys very often, make sure they are optimized
 217         final InstanceIdentifierBuilder idb = YangInstanceIdentifier.builder(newPeerPath
 218                 .node(EMPTY_ADJRIBIN.getIdentifier()).node(TABLES));
 219         idb.nodeWithKey(instanceIdentifierKey.getNodeType(), instanceIdentifierKey.getKeyValues());
 220
 221         final TableContext ctx = new TableContext(rs, idb.build());
 222         ctx.createEmptyTableStructure(tx);
 223
 224         tx.merge(LogicalDatastoreType.OPERATIONAL, ctx.getTableId().node(Attributes.QNAME)
 225                 .node(ATTRIBUTES_UPTODATE_FALSE.getNodeType()), ATTRIBUTES_UPTODATE_FALSE);
 226         LOG.debug("Created table instance {}", ctx.getTableId());
 227         tb.put(tableKey, ctx);
 228     }
 229
 230     private static void installAdjRibsOutTables(final YangInstanceIdentifier newPeerPath, final RIBSupportContext rs,
 231             final NodeIdentifierWithPredicates instanceIdentifierKey, final TablesKey tableKey,
 232             final SendReceive sendReceive, final DOMDataWriteTransaction tx) {
 233         final NodeIdentifierWithPredicates supTablesKey = RibSupportUtils.toYangKey(SupportedTables.QNAME, tableKey);
 234         final DataContainerNodeAttrBuilder<NodeIdentifierWithPredicates, MapEntryNode> tt =
 235                 Builders.mapEntryBuilder().withNodeIdentifier(supTablesKey);
 236         for (final Entry<QName, Object> e : supTablesKey.getKeyValues().entrySet()) {
 237             tt.withChild(ImmutableNodes.leafNode(e.getKey(), e.getValue()));
 238         }
 239         if (sendReceive != null) {
 240             tt.withChild(ImmutableNodes.leafNode(SEND_RECEIVE, sendReceive.toString().toLowerCase(Locale.ENGLISH)));
 241         }
 242         tx.put(LogicalDatastoreType.OPERATIONAL, newPeerPath.node(PEER_TABLES).node(supTablesKey), tt.build());
 243         rs.createEmptyTableStructure(tx, newPeerPath.node(EMPTY_ADJRIBOUT.getIdentifier())
 244                 .node(TABLES).node(instanceIdentifierKey));
 245     }
 246
 247     private void createEmptyPeerStructure(final PeerId newPeerId,
 248             final YangInstanceIdentifier peerPath, final DOMDataWriteTransaction tx) {
 249         final NodeIdentifierWithPredicates peerKey = IdentifierUtils.domPeerId(newPeerId);
 250
 251         tx.put(LogicalDatastoreType.OPERATIONAL, peerPath, peerSkeleton(peerKey, newPeerId.getValue()));
 252         LOG.debug("New peer {} structure installed.", peerPath);
 253     }
 254
 255     @VisibleForTesting
 256     MapEntryNode peerSkeleton(final NodeIdentifierWithPredicates peerKey, final String peerId) {
 257         final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> pb = Builders.mapEntryBuilder();
 258         pb.withNodeIdentifier(peerKey);
 259         pb.withChild(ImmutableNodes.leafNode(PEER_ID, peerId));
 260         pb.withChild(ImmutableNodes.leafNode(PEER_ROLE, PeerRoleUtil.roleForString(this.role)));
 261         pb.withChild(ImmutableMapNodeBuilder.create().withNodeIdentifier(PEER_TABLES).build());
 262         pb.withChild(EMPTY_ADJRIBIN);
 263         pb.withChild(EMPTY_EFFRIBIN);
 264         pb.withChild(EMPTY_ADJRIBOUT);
 265         return pb.build();
 266     }
 267
 268     void markTableUptodate(final TablesKey tableTypes) {
 269         final DOMDataWriteTransaction tx = this.chain.getDomChain().newWriteOnlyTransaction();
 270         final TableContext ctx = this.tables.get(tableTypes);
 271         tx.merge(LogicalDatastoreType.OPERATIONAL, ctx.getTableId().node(Attributes.QNAME)
 272                 .node(ATTRIBUTES_UPTODATE_TRUE.getNodeType()), ATTRIBUTES_UPTODATE_TRUE);
 273         tx.commit().addCallback(new FutureCallback<CommitInfo>() {
 274             @Override
 275             public void onSuccess(final CommitInfo result) {
 276                 LOG.trace("Write Attributes uptodate, succeed");
 277             }
 278
 279             @Override
 280             public void onFailure(final Throwable throwable) {
 281                 LOG.error("Write Attributes uptodate failed", throwable);
 282             }
 283         }, MoreExecutors.directExecutor());
 284     }
 285
 286     void updateRoutes(final MpReachNlri nlri, final org.opendaylight.yang.gen.v1.urn.opendaylight.params
 287             .xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes attributes) {
 288         final TablesKey key = new TablesKey(nlri.getAfi(), nlri.getSafi());
 289         final TableContext ctx = this.tables.get(key);
 290         if (ctx == null) {
 291             LOG.debug("No table for {}, not accepting NLRI {}", key, nlri);
 292             return;
 293         }
 294
 295         final DOMDataWriteTransaction tx = this.chain.getDomChain().newWriteOnlyTransaction();
 296         final Collection<NodeIdentifierWithPredicates> routeKeys = ctx.writeRoutes(tx, nlri, attributes);
 297         final Collection<NodeIdentifierWithPredicates> staleRoutes = this.staleRoutesRegistry.get(key);
 298         if (staleRoutes != null) {
 299             staleRoutes.removeAll(routeKeys);
 300         }
 301         LOG.trace("Write routes {}", nlri);
 302         final FluentFuture<? extends CommitInfo> future = tx.commit();
 303         this.submitted = future;
 304         future.addCallback(new FutureCallback<CommitInfo>() {
 305             @Override
 306             public void onSuccess(final CommitInfo result) {
 307                 LOG.trace("Write routes {}, succeed", nlri);
 308             }
 309
 310             @Override
 311             public void onFailure(final Throwable throwable) {
 312                 LOG.error("Write routes failed", throwable);
 313             }
 314         }, MoreExecutors.directExecutor());
 315     }
 316
 317     void removeRoutes(final MpUnreachNlri nlri) {
 318         final TablesKey key = new TablesKey(nlri.getAfi(), nlri.getSafi());
 319         final TableContext ctx = this.tables.get(key);
 320         if (ctx == null) {
 321             LOG.debug("No table for {}, not accepting NLRI {}", key, nlri);
 322             return;
 323         }
 324         LOG.trace("Removing routes {}", nlri);
 325         final DOMDataWriteTransaction tx = this.chain.getDomChain().newWriteOnlyTransaction();
 326         ctx.removeRoutes(tx, nlri);
 327         final FluentFuture<? extends CommitInfo> future = tx.commit();
 328         this.submitted = future;
 329         future.addCallback(new FutureCallback<CommitInfo>() {
 330             @Override
 331             public void onSuccess(final CommitInfo result) {
 332                 LOG.trace("Removing routes {}, succeed", nlri);
 333             }
 334
 335             @Override
 336             public void onFailure(final Throwable throwable) {
 337                 LOG.error("Removing routes failed", throwable);
 338             }
 339         }, MoreExecutors.directExecutor());
 340     }
 341
 342     void releaseChain() {
 343         if (this.submitted != null) {
 344             try {
 345                 this.submitted.get();
 346             } catch (final InterruptedException | ExecutionException throwable) {
 347                 LOG.error("Write routes failed", throwable);
 348             }
 349         }
 350     }
 351
 352     void storeStaleRoutes(final Set<TablesKey> gracefulTables) {
 353         final CountDownLatch latch = new CountDownLatch(gracefulTables.size());
 354
 355         try (DOMDataReadOnlyTransaction tx = this.chain.getDomChain().newReadOnlyTransaction()) {
 356             for (TablesKey tablesKey : gracefulTables) {
 357                 final TableContext ctx = this.tables.get(tablesKey);
 358                 if (ctx == null) {
 359                     LOG.warn("Missing table for address family {}", tablesKey);
 360                     latch.countDown();
 361                     continue;
 362                 }
 363
 364                 Futures.addCallback(tx.read(LogicalDatastoreType.OPERATIONAL, ctx.routesPath()),
 365                     new FutureCallback<Optional<NormalizedNode<?, ?>>>() {
 366                         @Override
 367                         public void onSuccess(final Optional<NormalizedNode<?, ?>> routesOptional) {
 368                             try {
 369                                 if (routesOptional.isPresent()) {
 370                                     synchronized (AdjRibInWriter.this.staleRoutesRegistry) {
 371                                         final MapNode routesNode = (MapNode) routesOptional.get();
 372                                         final List<NodeIdentifierWithPredicates> routes = routesNode.getValue().stream()
 373                                                 .map(MapEntryNode::getIdentifier)
 374                                                 .collect(Collectors.toList());
 375                                         if (!routes.isEmpty()) {
 376                                             AdjRibInWriter.this.staleRoutesRegistry.put(tablesKey, routes);
 377                                         }
 378                                     }
 379                                 }
 380                             } finally {
 381                                 latch.countDown();
 382                             }
 383                         }
 384
 385                         @Override
 386                         public void onFailure(final Throwable throwable) {
 387                             LOG.warn("Failed to store stale routes for table {}", tablesKey, throwable);
 388                             latch.countDown();
 389                         }
 390                     }, MoreExecutors.directExecutor());
 391             }
 392         }
 393
 394         try {
 395             latch.await();
 396         } catch (InterruptedException e) {
 397             LOG.warn("Interrupted while waiting to store stale routes with {} tasks of {} to finish", latch.getCount(),
 398                 gracefulTables, e);
 399         }
 400     }
 401
 402     void removeStaleRoutes(final TablesKey tableKey) {
 403         final TableContext ctx = this.tables.get(tableKey);
 404         if (ctx == null) {
 405             LOG.debug("No table for {}, not removing any stale routes", tableKey);
 406             return;
 407         }
 408         final Collection<NodeIdentifierWithPredicates> routeKeys = this.staleRoutesRegistry.get(tableKey);
 409         if (routeKeys == null || routeKeys.isEmpty()) {
 410             LOG.debug("No stale routes present in table {}", tableKey);
 411             return;
 412         }
 413         LOG.trace("Removing routes {}", routeKeys);
 414         final DOMDataWriteTransaction tx = this.chain.getDomChain().newWriteOnlyTransaction();
 415         routeKeys.forEach(routeKey -> {
 416             tx.delete(LogicalDatastoreType.OPERATIONAL, ctx.routePath(routeKey));
 417         });
 418         final FluentFuture<? extends CommitInfo> future = tx.commit();
 419         this.submitted = future;
 420         future.addCallback(new FutureCallback<CommitInfo>() {
 421             @Override
 422             public void onSuccess(final CommitInfo result) {
 423                 LOG.trace("Removing routes {}, succeed", routeKeys);
 424                 synchronized (AdjRibInWriter.this.staleRoutesRegistry) {
 425                     staleRoutesRegistry.remove(tableKey);
 426                 }
 427             }
 428
 429             @Override
 430             public void onFailure(final Throwable throwable) {
 431                 LOG.warn("Removing routes {}, failed", routeKeys, throwable);
 432             }
 433         }, MoreExecutors.directExecutor());
 434     }
 435
 436     FluentFuture<? extends CommitInfo> clearTables(final Set<TablesKey> tablesToClear) {
 437         if (tablesToClear == null || tablesToClear.isEmpty()) {
 438             return CommitInfo.emptyFluentFuture();
 439         }
 440
 441         final DOMDataWriteTransaction wtx = this.chain.getDomChain().newWriteOnlyTransaction();
 442         tablesToClear.forEach(tableKey -> {
 443             final TableContext ctx = this.tables.get(tableKey);
 444             wtx.delete(LogicalDatastoreType.OPERATIONAL, ctx.routesPath().getParent());
 445         });
 446         return wtx.commit();
 447     }
 448 }