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.collect.ImmutableMap;
  14 import com.google.common.collect.ImmutableMap.Builder;
  15 import com.google.common.util.concurrent.FutureCallback;
  16 import com.google.common.util.concurrent.Futures;
  17 import com.google.common.util.concurrent.ListenableFuture;
  18 import com.google.common.util.concurrent.MoreExecutors;
  19 import java.util.Collections;
  20 import java.util.Locale;
  21 import java.util.Map;
  22 import java.util.Map.Entry;
  23 import java.util.Set;
  24 import javax.annotation.Nonnull;
  25 import javax.annotation.Nullable;
  26 import javax.annotation.concurrent.NotThreadSafe;
  27 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  28 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  29 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  30 import org.opendaylight.protocol.bgp.rib.impl.ApplicationPeer.RegisterAppPeerListener;
  31 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
  32 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContextRegistry;
  33 import org.opendaylight.protocol.bgp.rib.spi.IdentifierUtils;
  34 import org.opendaylight.protocol.bgp.rib.spi.PeerRoleUtil;
  35 import org.opendaylight.protocol.bgp.rib.spi.RibSupportUtils;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev171207.SendReceive;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev171207.update.attributes.MpReachNlri;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev171207.update.attributes.MpUnreachNlri;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.PeerId;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.PeerRole;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.Peer;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.AdjRibIn;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.AdjRibOut;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.EffectiveRibIn;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.SupportedTables;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.Tables;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Attributes;
  49 import org.opendaylight.yangtools.yang.common.QName;
  50 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  51 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.InstanceIdentifierBuilder;
  52 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  53 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  54 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  55 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
  56 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  57 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  58 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  59 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeAttrBuilder;
  60 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
  61 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapNodeBuilder;
  62 import org.slf4j.Logger;
  63 import org.slf4j.LoggerFactory;
  64
  65 /**
  66  * Writer of Adjacency-RIB-In for a single peer. An instance of this object
  67  * is attached to each {@link BGPPeer} and {@link ApplicationPeer}.
  68  */
  69 @NotThreadSafe
  70 final class AdjRibInWriter {
  71
  72     private static final Logger LOG = LoggerFactory.getLogger(AdjRibInWriter.class);
  73
  74     @VisibleForTesting
  75     static final LeafNode<Boolean> ATTRIBUTES_UPTODATE_FALSE = ImmutableNodes.leafNode(QName.create(Attributes.QNAME,
  76             "uptodate"), Boolean.FALSE);
  77     @VisibleForTesting
  78     static final QName PEER_ID_QNAME = QName.create(Peer.QNAME, "peer-id").intern();
  79     private static final LeafNode<Boolean> ATTRIBUTES_UPTODATE_TRUE =
  80             ImmutableNodes.leafNode(ATTRIBUTES_UPTODATE_FALSE.getNodeType(), Boolean.TRUE);
  81     private static final QName PEER_ROLE_QNAME = QName.create(Peer.QNAME, "peer-role").intern();
  82     private static final NodeIdentifier ADJRIBIN = new NodeIdentifier(AdjRibIn.QNAME);
  83     private static final NodeIdentifier ADJRIBOUT = new NodeIdentifier(AdjRibOut.QNAME);
  84     private static final NodeIdentifier EFFRIBIN = new NodeIdentifier(EffectiveRibIn.QNAME);
  85     private static final NodeIdentifier PEER_ID = new NodeIdentifier(PEER_ID_QNAME);
  86     private static final NodeIdentifier PEER_ROLE = new NodeIdentifier(PEER_ROLE_QNAME);
  87     private static final NodeIdentifier PEER_TABLES = new NodeIdentifier(SupportedTables.QNAME);
  88     private static final NodeIdentifier TABLES = new NodeIdentifier(Tables.QNAME);
  89     private static final QName SEND_RECEIVE = QName.create(SupportedTables.QNAME, "send-receive").intern();
  90
  91     // FIXME: is there a utility method to construct this?
  92     private static final ContainerNode EMPTY_ADJRIBIN = Builders.containerBuilder()
  93             .withNodeIdentifier(ADJRIBIN).addChild(ImmutableNodes.mapNodeBuilder(Tables.QNAME).build()).build();
  94     private static final ContainerNode EMPTY_EFFRIBIN = Builders.containerBuilder()
  95             .withNodeIdentifier(EFFRIBIN).addChild(ImmutableNodes.mapNodeBuilder(Tables.QNAME).build()).build();
  96     private static final ContainerNode EMPTY_ADJRIBOUT = Builders.containerBuilder()
  97             .withNodeIdentifier(ADJRIBOUT).addChild(ImmutableNodes.mapNodeBuilder(Tables.QNAME).build()).build();
  98
  99     private final Map<TablesKey, TableContext> tables;
 100     private final YangInstanceIdentifier ribPath;
 101     private final DOMTransactionChain chain;
 102     private final PeerRole role;
 103
 104     private AdjRibInWriter(final YangInstanceIdentifier ribPath, final DOMTransactionChain chain, final PeerRole role,
 105             final Map<TablesKey, TableContext> tables) {
 106         this.ribPath = requireNonNull(ribPath);
 107         this.chain = requireNonNull(chain);
 108         this.tables = requireNonNull(tables);
 109         this.role = requireNonNull(role);
 110     }
 111
 112     /**
 113      * Create a new writer using a transaction chain.
 114      *
 115      * @param role                peer's role
 116      * @param chain               transaction chain  @return A fresh writer instance
 117      */
 118     static AdjRibInWriter create(@Nonnull final YangInstanceIdentifier ribId, @Nonnull final PeerRole role,
 119             @Nonnull final DOMTransactionChain chain) {
 120         return new AdjRibInWriter(ribId, chain, role, Collections.emptyMap());
 121     }
 122
 123     /**
 124      * Transform this writer to a new writer, which is in charge of specified tables.
 125      * Empty tables are created for new entries and old tables are deleted. Once this
 126      * method returns, the old instance must not be reasonably used.
 127      *
 128      * @param newPeerId         new peer BGP identifier
 129      * @param peerPath
 130      * @param registry          RIB extension registry
 131      * @param tableTypes        New tables, must not be null
 132      * @param addPathTablesType
 133      * @return New writer
 134      */
 135     AdjRibInWriter transform(final PeerId newPeerId, final YangInstanceIdentifier peerPath,
 136             final RIBSupportContextRegistry registry,
 137             final Set<TablesKey> tableTypes, final Map<TablesKey, SendReceive> addPathTablesType) {
 138         return transform(newPeerId, peerPath, registry, tableTypes, addPathTablesType, null);
 139     }
 140
 141     AdjRibInWriter transform(final PeerId newPeerId, final YangInstanceIdentifier peerPath,
 142             final RIBSupportContextRegistry registry, final Set<TablesKey> tableTypes,
 143             final Map<TablesKey, SendReceive> addPathTablesType,
 144             @Nullable final RegisterAppPeerListener registerAppPeerListener) {
 145         final DOMDataWriteTransaction tx = this.chain.newWriteOnlyTransaction();
 146
 147         createEmptyPeerStructure(newPeerId, peerPath, tx);
 148         final ImmutableMap<TablesKey, TableContext> tb = createNewTableInstances(peerPath, registry, tableTypes,
 149                 addPathTablesType, tx);
 150
 151         Futures.addCallback(tx.submit(), new FutureCallback<Void>() {
 152             @Override
 153             public void onSuccess(final Void result) {
 154                 if (registerAppPeerListener != null) {
 155                     LOG.trace("Application Peer Listener registered");
 156                     registerAppPeerListener.register();
 157                 }
 158             }
 159
 160             @Override
 161             public void onFailure(final Throwable throwable) {
 162                 if (registerAppPeerListener != null) {
 163                     LOG.error("Failed to create Empty Structure, Application Peer Listener won't be registered",
 164                             throwable);
 165                 } else {
 166                     LOG.error("Failed to create Empty Structure", throwable);
 167                 }
 168             }
 169         }, MoreExecutors.directExecutor());
 170         return new AdjRibInWriter(this.ribPath, this.chain, this.role, tb);
 171     }
 172
 173     /**
 174      * Create new table instances, potentially creating their empty entries
 175      */
 176     private ImmutableMap<TablesKey, TableContext> createNewTableInstances(final YangInstanceIdentifier newPeerPath,
 177             final RIBSupportContextRegistry registry, final Set<TablesKey> tableTypes,
 178             final Map<TablesKey, SendReceive> addPathTablesType, final DOMDataWriteTransaction tx) {
 179
 180         final Builder<TablesKey, TableContext> tb = ImmutableMap.builder();
 181         for (final TablesKey tableKey : tableTypes) {
 182             final RIBSupportContext rs = registry.getRIBSupportContext(tableKey);
 183             // TODO: Use returned value once Instance Identifier builder allows for it.
 184             final NodeIdentifierWithPredicates instanceIdentifierKey = RibSupportUtils.toYangTablesKey(tableKey);
 185             if (rs == null) {
 186                 LOG.warn("No support for table type {}, skipping it", tableKey);
 187                 continue;
 188             }
 189             installAdjRibsOutTables(newPeerPath, rs, instanceIdentifierKey, tableKey, addPathTablesType.get(tableKey), tx);
 190             installAdjRibInTables(newPeerPath, tableKey, rs, instanceIdentifierKey, tx, tb);
 191         }
 192         return tb.build();
 193     }
 194
 195     private static void installAdjRibInTables(final YangInstanceIdentifier newPeerPath, final TablesKey tableKey,
 196             final RIBSupportContext rs, final NodeIdentifierWithPredicates instanceIdentifierKey,
 197             final DOMDataWriteTransaction tx, final Builder<TablesKey, TableContext> tb) {
 198         // We will use table keys very often, make sure they are optimized
 199         final InstanceIdentifierBuilder idb = YangInstanceIdentifier.builder(newPeerPath
 200                 .node(EMPTY_ADJRIBIN.getIdentifier()).node(TABLES));
 201         idb.nodeWithKey(instanceIdentifierKey.getNodeType(), instanceIdentifierKey.getKeyValues());
 202
 203         final TableContext ctx = new TableContext(rs, idb.build());
 204         ctx.createEmptyTableStructure(tx);
 205
 206         tx.merge(LogicalDatastoreType.OPERATIONAL, ctx.getTableId().node(Attributes.QNAME)
 207                 .node(ATTRIBUTES_UPTODATE_FALSE.getNodeType()), ATTRIBUTES_UPTODATE_FALSE);
 208         LOG.debug("Created table instance {}", ctx.getTableId());
 209         tb.put(tableKey, ctx);
 210     }
 211
 212     private void installAdjRibsOutTables(final YangInstanceIdentifier newPeerPath, final RIBSupportContext rs,
 213             final NodeIdentifierWithPredicates instanceIdentifierKey, final TablesKey tableKey,
 214             final SendReceive sendReceive, final DOMDataWriteTransaction tx) {
 215         final NodeIdentifierWithPredicates supTablesKey = RibSupportUtils.toYangKey(SupportedTables.QNAME, tableKey);
 216         final DataContainerNodeAttrBuilder<NodeIdentifierWithPredicates, MapEntryNode> tt =
 217                 Builders.mapEntryBuilder().withNodeIdentifier(supTablesKey);
 218         for (final Entry<QName, Object> e : supTablesKey.getKeyValues().entrySet()) {
 219             tt.withChild(ImmutableNodes.leafNode(e.getKey(), e.getValue()));
 220         }
 221         if (sendReceive != null) {
 222             tt.withChild(ImmutableNodes.leafNode(SEND_RECEIVE, sendReceive.toString().toLowerCase(Locale.ENGLISH)));
 223         }
 224         tx.put(LogicalDatastoreType.OPERATIONAL, newPeerPath.node(PEER_TABLES).node(supTablesKey), tt.build());
 225         rs.createEmptyTableStructure(tx, newPeerPath.node(EMPTY_ADJRIBOUT.getIdentifier())
 226                 .node(TABLES).node(instanceIdentifierKey));
 227     }
 228
 229     private void createEmptyPeerStructure(final PeerId newPeerId,
 230             final YangInstanceIdentifier peerPath, final DOMDataWriteTransaction tx) {
 231         final NodeIdentifierWithPredicates peerKey = IdentifierUtils.domPeerId(newPeerId);
 232
 233         tx.put(LogicalDatastoreType.OPERATIONAL, peerPath, peerSkeleton(peerKey, newPeerId.getValue()));
 234         LOG.debug("New peer {} structure installed.", peerPath);
 235     }
 236
 237     @VisibleForTesting
 238     MapEntryNode peerSkeleton(final NodeIdentifierWithPredicates peerKey, final String peerId) {
 239         final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> pb = Builders.mapEntryBuilder();
 240         pb.withNodeIdentifier(peerKey);
 241         pb.withChild(ImmutableNodes.leafNode(PEER_ID, peerId));
 242         pb.withChild(ImmutableNodes.leafNode(PEER_ROLE, PeerRoleUtil.roleForString(this.role)));
 243         pb.withChild(ImmutableMapNodeBuilder.create().withNodeIdentifier(PEER_TABLES).build());
 244         pb.withChild(EMPTY_ADJRIBIN);
 245         pb.withChild(EMPTY_EFFRIBIN);
 246         pb.withChild(EMPTY_ADJRIBOUT);
 247         return pb.build();
 248     }
 249
 250     void markTableUptodate(final TablesKey tableTypes) {
 251         final DOMDataWriteTransaction tx = this.chain.newWriteOnlyTransaction();
 252         final TableContext ctx = this.tables.get(tableTypes);
 253         tx.merge(LogicalDatastoreType.OPERATIONAL, ctx.getTableId().node(Attributes.QNAME)
 254                 .node(ATTRIBUTES_UPTODATE_TRUE.getNodeType()), ATTRIBUTES_UPTODATE_TRUE);
 255         Futures.addCallback(tx.submit(), new FutureCallback<Void>() {
 256             @Override
 257             public void onSuccess(final Void result) {
 258                 LOG.trace("Write Attributes uptodate, succeed");
 259             }
 260
 261             @Override
 262             public void onFailure(final Throwable throwable) {
 263                 LOG.error("Write Attributes uptodate failed", throwable);
 264             }
 265         }, MoreExecutors.directExecutor());
 266     }
 267
 268     void updateRoutes(final MpReachNlri nlri, final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang
 269             .bgp.message.rev171207.path.attributes.Attributes attributes) {
 270         final TablesKey key = new TablesKey(nlri.getAfi(), nlri.getSafi());
 271         final TableContext ctx = this.tables.get(key);
 272         if (ctx == null) {
 273             LOG.debug("No table for {}, not accepting NLRI {}", key, nlri);
 274             return;
 275         }
 276
 277         final DOMDataWriteTransaction tx = this.chain.newWriteOnlyTransaction();
 278         ctx.writeRoutes(tx, nlri, attributes);
 279         LOG.trace("Write routes {}", nlri);
 280         Futures.addCallback(tx.submit(), new FutureCallback<Void>() {
 281             @Override
 282             public void onSuccess(final Void result) {
 283                 LOG.trace("Write routes {}, succeed", nlri);
 284             }
 285
 286             @Override
 287             public void onFailure(final Throwable throwable) {
 288                 LOG.error("Write routes failed", throwable);
 289             }
 290         }, MoreExecutors.directExecutor());
 291     }
 292
 293     void removeRoutes(final MpUnreachNlri nlri) {
 294         final TablesKey key = new TablesKey(nlri.getAfi(), nlri.getSafi());
 295         final TableContext ctx = this.tables.get(key);
 296         if (ctx == null) {
 297             LOG.debug("No table for {}, not accepting NLRI {}", key, nlri);
 298             return;
 299         }
 300         LOG.trace("Removing routes {}", nlri);
 301         final DOMDataWriteTransaction tx = this.chain.newWriteOnlyTransaction();
 302         ctx.removeRoutes(tx, nlri);
 303         Futures.addCallback(tx.submit(), new FutureCallback<Void>() {
 304             @Override
 305             public void onSuccess(final Void result) {
 306                 LOG.trace("Removing routes {}, succeed", nlri);
 307             }
 308
 309             @Override
 310             public void onFailure(final Throwable throwable) {
 311                 LOG.error("Removing routes failed", throwable);
 312             }
 313         }, MoreExecutors.directExecutor());
 314     }
 315 }