bgp/topology-provider/src/main/java/org/opendaylight/bgpcep/bgp/topology/provider/LinkstateTopologyBuilder.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.bgp.topology.provider;
   9
  10 import java.math.BigDecimal;
  11 import java.nio.ByteBuffer;
  12 import java.util.ArrayList;
  13 import java.util.HashMap;
  14 import java.util.HashSet;
  15 import java.util.List;
  16 import java.util.Map;
  17 import java.util.Set;
  18
  19 import org.opendaylight.controller.md.sal.common.api.data.DataModification;
  20 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
  21 import org.opendaylight.protocol.bgp.rib.RibReference;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.DomainName;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpPrefix;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.Ipv4InterfaceIdentifier;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.Ipv6InterfaceIdentifier;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.NodeFlagBits;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.NodeIdentifier;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.TopologyIdentifier;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.LinkstateRoute;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.Attributes1;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.ObjectType;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.attributes.attribute.type.link._case.LinkAttributes;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.attributes.attribute.type.node._case.NodeAttributes;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.attributes.attribute.type.prefix._case.PrefixAttributes;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.object.type.LinkCase;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.object.type.NodeCase;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.object.type.PrefixCase;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.object.type.link._case.LinkDescriptors;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.object.type.node._case.NodeDescriptors;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.CRouterIdentifier;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.c.router.identifier.IsisNodeCase;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.c.router.identifier.IsisPseudonodeCase;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.c.router.identifier.OspfNodeCase;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.c.router.identifier.OspfPseudonodeCase;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.c.router.identifier.isis.node._case.IsisNode;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.c.router.identifier.isis.pseudonode._case.IsisPseudonode;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.c.router.identifier.ospf.node._case.OspfNode;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.node.identifier.c.router.identifier.ospf.pseudonode._case.OspfPseudonode;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.route.Attributes;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.concepts.rev131125.Bandwidth;
  52 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.IsoPseudonodeId;
  53 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.IsoSystemId;
  54 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.isis.link.attributes.IsisLinkAttributesBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.isis.node.attributes.IsisNodeAttributesBuilder;
  56 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.isis.node.attributes.isis.node.attributes.IsoBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.ted.rev131021.ted.link.attributes.UnreservedBandwidth;
  58 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.ted.rev131021.ted.link.attributes.UnreservedBandwidthBuilder;
  59 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.ted.rev131021.ted.link.attributes.UnreservedBandwidthKey;
  60 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.LinkId;
  61 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  62 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  63 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TpId;
  64 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.DestinationBuilder;
  65 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.SourceBuilder;
  66 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
  67 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkBuilder;
  68 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkKey;
  69 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  70 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeBuilder;
  71 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  72 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypesBuilder;
  73 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
  74 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointBuilder;
  75 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointKey;
  76 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.Link1;
  77 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.Link1Builder;
  78 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.Node1;
  79 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.Node1Builder;
  80 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.TerminationPoint1;
  81 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.TerminationPoint1Builder;
  82 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.TopologyTypes1;
  83 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.TopologyTypes1Builder;
  84 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.link.attributes.IgpLinkAttributesBuilder;
  85 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.IgpNodeAttributesBuilder;
  86 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.igp.node.attributes.Prefix;
  87 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.igp.node.attributes.PrefixBuilder;
  88 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.igp.node.attributes.PrefixKey;
  89 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.termination.point.attributes.IgpTerminationPointAttributesBuilder;
  90 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.termination.point.attributes.igp.termination.point.attributes.TerminationPointType;
  91 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.termination.point.attributes.igp.termination.point.attributes.termination.point.type.IpBuilder;
  92 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.termination.point.attributes.igp.termination.point.attributes.termination.point.type.UnnumberedBuilder;
  93 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.Prefix1;
  94 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.Prefix1Builder;
  95 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.link.attributes.OspfLinkAttributesBuilder;
  96 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.node.attributes.OspfNodeAttributesBuilder;
  97 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.node.attributes.ospf.node.attributes.router.type.AbrBuilder;
  98 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.node.attributes.ospf.node.attributes.router.type.InternalBuilder;
  99 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.node.attributes.ospf.node.attributes.router.type.PseudonodeBuilder;
 100 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.prefix.attributes.OspfPrefixAttributesBuilder;
 101 import org.opendaylight.yangtools.yang.binding.DataObject;
 102 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 103 import org.slf4j.Logger;
 104 import org.slf4j.LoggerFactory;
 105
 106 import com.google.common.base.Function;
 107 import com.google.common.base.Preconditions;
 108 import com.google.common.collect.Collections2;
 109 import com.google.common.collect.Lists;
 110
 111 public final class LinkstateTopologyBuilder extends AbstractTopologyBuilder<LinkstateRoute> {
 112         private static final class TpHolder {
 113                 private final Set<LinkId> local = new HashSet<>();
 114                 private final Set<LinkId> remote = new HashSet<>();
 115
 116                 private final TerminationPoint tp;
 117
 118                 private TpHolder(final TerminationPoint tp) {
 119                         this.tp = Preconditions.checkNotNull(tp);
 120                 }
 121
 122                 private synchronized void addLink(final LinkId id, final boolean isRemote) {
 123                         if (isRemote) {
 124                                 this.remote.add(id);
 125                         } else {
 126                                 this.local.add(id);
 127                         }
 128                 }
 129
 130                 private synchronized boolean removeLink(final LinkId id, final boolean isRemote) {
 131                         final boolean removed;
 132                         if (isRemote) {
 133                                 removed = this.remote.remove(id);
 134                         } else {
 135                                 removed = this.local.remove(id);
 136                         }
 137                         if (!removed) {
 138                                 LOG.warn("Removed non-reference link {} from TP {} isRemote {}", this.tp.getTpId(), id, isRemote);
 139                         }
 140
 141                         return this.local.isEmpty() && this.remote.isEmpty();
 142                 }
 143
 144                 private TerminationPoint getTp() {
 145                         return this.tp;
 146                 }
 147         }
 148
 149         private final class NodeHolder {
 150                 final Map<PrefixKey, Prefix> prefixes = new HashMap<>();
 151                 final Map<TpId, TpHolder> tps = new HashMap<>();
 152                 boolean advertized = false;
 153                 IgpNodeAttributesBuilder inab;
 154                 NodeBuilder nb;
 155
 156                 private NodeHolder(final NodeId id) {
 157                         this.inab = new IgpNodeAttributesBuilder();
 158                         this.nb = new NodeBuilder().setKey(new NodeKey(id)).setNodeId(id);
 159                 }
 160
 161                 /**
 162                  * Synchronized in-core state of a node into the backing store using the transaction
 163                  *
 164                  * @param trans data modification transaction which to use
 165                  * @return True if the node has been purged, false otherwise.
 166                  */
 167                 private boolean syncState(final DataModification<InstanceIdentifier<?>, DataObject> trans) {
 168                         final InstanceIdentifier<Node> nid = getInstanceIdentifier().child(
 169                                         org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
 170                                         this.nb.getKey());
 171
 172                         /*
 173                          * Transaction's putOperationalData() does a merge. Force it onto a replace
 174                          * by removing the data. If we decide to remove the node -- we just skip the put.
 175                          */
 176                         trans.removeOperationalData(nid);
 177
 178                         if (!this.advertized) {
 179                                 if (this.tps.isEmpty() && this.prefixes.isEmpty()) {
 180                                         LOG.debug("Removing unadvertized unused node {}", this.nb.getNodeId());
 181                                         return true;
 182                                 }
 183
 184                                 LOG.debug("Node {} is still implied by {} TPs and {} prefixes", this.nb.getNodeId(), this.tps.size(), this.prefixes.size());
 185                         }
 186
 187                         // Re-generate termination points
 188                         this.nb.setTerminationPoint(Lists.newArrayList(Collections2.transform(this.tps.values(),
 189                                         new Function<TpHolder, TerminationPoint>() {
 190                                 @Override
 191                                 public TerminationPoint apply(final TpHolder input) {
 192                                         return input.getTp();
 193                                 }
 194                         })));
 195
 196                         // Re-generate prefixes
 197                         this.inab.setPrefix(Lists.newArrayList(this.prefixes.values()));
 198
 199                         // Write the node out
 200                         final Node n = this.nb.addAugmentation(Node1.class, new Node1Builder().setIgpNodeAttributes(this.inab.build()).build()).build();
 201                         trans.putOperationalData(nid, n);
 202                         LOG.debug("Created node {} at {}", n, nid);
 203                         return false;
 204                 }
 205
 206                 private synchronized void removeTp(final TpId tp, final LinkId link, final boolean isRemote) {
 207                         final TpHolder h = this.tps.get(tp);
 208                         if (h != null) {
 209                                 if (h.removeLink(link, isRemote)) {
 210                                         this.tps.remove(tp);
 211                                         LOG.debug("Removed TP {}", tp);
 212                                 }
 213                         } else {
 214                                 LOG.warn("Removed non-present TP {} by link {}", tp, link);
 215                         }
 216                 }
 217
 218                 private void addTp(final TerminationPoint tp, final LinkId link, final boolean isRemote) {
 219                         TpHolder h = this.tps.get(tp.getTpId());
 220                         if (h == null) {
 221                                 h = new TpHolder(tp);
 222                                 this.tps.put(tp.getTpId(), h);
 223                         }
 224
 225                         h.addLink(link, isRemote);
 226                 }
 227
 228                 private void addPrefix(final Prefix pfx) {
 229                         this.prefixes.put(pfx.getKey(), pfx);
 230                 }
 231
 232                 private void removePrefix(final PrefixCase p) {
 233                         this.prefixes.remove(new PrefixKey(p.getIpReachabilityInformation()));
 234                 }
 235
 236                 private void unadvertized() {
 237                         this.inab = new IgpNodeAttributesBuilder();
 238                         this.nb = new NodeBuilder().setKey(this.nb.getKey()).setNodeId(this.nb.getNodeId());
 239                         this.advertized = false;
 240                         LOG.debug("Node {} is unadvertized", this.nb.getNodeId());
 241                 }
 242
 243                 private void advertized(final NodeBuilder nb, final IgpNodeAttributesBuilder inab) {
 244                         this.nb = Preconditions.checkNotNull(nb);
 245                         this.inab = Preconditions.checkNotNull(inab);
 246                         this.advertized = true;
 247                         LOG.debug("Node {} is advertized", nb.getNodeId());
 248                 }
 249
 250                 private Object getNodeId() {
 251                         return this.nb.getNodeId();
 252                 }
 253         }
 254
 255         private static final Logger LOG = LoggerFactory.getLogger(LinkstateTopologyBuilder.class);
 256         private final Map<NodeId, NodeHolder> nodes = new HashMap<>();
 257
 258         public LinkstateTopologyBuilder(final DataProviderService dataProvider, final RibReference locRibReference, final TopologyId topologyId) {
 259                 super(dataProvider, locRibReference, topologyId, new TopologyTypesBuilder().addAugmentation(TopologyTypes1.class,
 260                                 new TopologyTypes1Builder().build()).build(), LinkstateRoute.class);
 261         }
 262
 263         private LinkId buildLinkId(final UriBuilder base, final LinkCase link) {
 264                 return new LinkId(new UriBuilder(base, "link").add(link).toString());
 265         }
 266
 267         private NodeId buildNodeId(final UriBuilder base, final NodeIdentifier node) {
 268                 return new NodeId(new UriBuilder(base, "node").add("", node).toString());
 269         }
 270
 271         private TpId buildTpId(final UriBuilder base, final TopologyIdentifier topologyIdentifier,
 272                         final Ipv4InterfaceIdentifier ipv4InterfaceIdentifier, final Ipv6InterfaceIdentifier ipv6InterfaceIdentifier, final Long id) {
 273                 final UriBuilder b = new UriBuilder(base, "tp");
 274                 if (topologyIdentifier != null) {
 275                         b.add("mt", topologyIdentifier.getValue());
 276                 }
 277                 if (ipv4InterfaceIdentifier != null) {
 278                         b.add("ipv4", ipv4InterfaceIdentifier.getValue());
 279                 }
 280                 if (ipv6InterfaceIdentifier != null) {
 281                         b.add("ipv6", ipv6InterfaceIdentifier.getValue());
 282                 }
 283
 284                 return new TpId(b.add("id", id).toString());
 285         }
 286
 287         private TpId buildLocalTpId(final UriBuilder base, final LinkDescriptors linkDescriptors) {
 288                 return buildTpId(base, linkDescriptors.getMultiTopologyId(), linkDescriptors.getIpv4InterfaceAddress(),
 289                                 linkDescriptors.getIpv6InterfaceAddress(), linkDescriptors.getLinkLocalIdentifier());
 290         }
 291
 292         private TerminationPoint buildTp(final TpId id, final TerminationPointType type) {
 293                 final TerminationPointBuilder stpb = new TerminationPointBuilder();
 294                 stpb.setKey(new TerminationPointKey(id));
 295                 stpb.setTpId(id);
 296
 297                 if (type != null) {
 298                         stpb.addAugmentation(
 299                                         TerminationPoint1.class,
 300                                         new TerminationPoint1Builder().setIgpTerminationPointAttributes(
 301                                                         new IgpTerminationPointAttributesBuilder().setTerminationPointType(null).build()).build());
 302                 }
 303
 304                 return stpb.build();
 305         }
 306
 307         private TerminationPointType getTpType(final Ipv4InterfaceIdentifier ipv4InterfaceIdentifier,
 308                         final Ipv6InterfaceIdentifier ipv6InterfaceIdentifier, final Long id) {
 309                 // Order of preference: Unnumbered first, then IP
 310                 if (id != null) {
 311                         LOG.debug("Unnumbered termination point type: {}", id);
 312                         return new UnnumberedBuilder().setUnnumberedId(id).build();
 313                 }
 314
 315                 final IpAddress ip;
 316                 if (ipv6InterfaceIdentifier != null) {
 317                         ip = new IpAddress(ipv6InterfaceIdentifier);
 318                 } else if (ipv4InterfaceIdentifier != null) {
 319                         ip = new IpAddress(ipv4InterfaceIdentifier);
 320                 } else {
 321                         ip = null;
 322                 }
 323
 324                 if (ip != null) {
 325                         LOG.debug("IP termination point type: {}", ip);
 326                         return new IpBuilder().setIpAddress(Lists.newArrayList(ip)).build();
 327                 }
 328
 329                 return null;
 330         }
 331
 332         private TerminationPoint buildLocalTp(final UriBuilder base, final LinkDescriptors linkDescriptors) {
 333                 final TpId id = buildLocalTpId(base, linkDescriptors);
 334                 final TerminationPointType t = getTpType(linkDescriptors.getIpv4InterfaceAddress(), linkDescriptors.getIpv6InterfaceAddress(),
 335                                 linkDescriptors.getLinkLocalIdentifier());
 336
 337                 return buildTp(id, t);
 338         }
 339
 340         private TpId buildRemoteTpId(final UriBuilder base, final LinkDescriptors linkDescriptors) {
 341                 return buildTpId(base, linkDescriptors.getMultiTopologyId(), linkDescriptors.getIpv4NeighborAddress(),
 342                                 linkDescriptors.getIpv6NeighborAddress(), linkDescriptors.getLinkRemoteIdentifier());
 343         }
 344
 345         private TerminationPoint buildRemoteTp(final UriBuilder base, final LinkDescriptors linkDescriptors) {
 346                 final TpId id = buildRemoteTpId(base, linkDescriptors);
 347                 final TerminationPointType t = getTpType(linkDescriptors.getIpv4NeighborAddress(), linkDescriptors.getIpv6NeighborAddress(),
 348                                 linkDescriptors.getLinkRemoteIdentifier());
 349
 350                 return buildTp(id, t);
 351         }
 352
 353         private InstanceIdentifier<?> buildLinkIdentifier(final UriBuilder base, final LinkId id) {
 354                 return getInstanceIdentifier().child(
 355                                 org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link.class,
 356                                 new LinkKey(id));
 357         }
 358
 359         private static Float bandwidthToFloat(final Bandwidth bandwidth) {
 360                 return ByteBuffer.wrap(bandwidth.getValue()).getFloat();
 361         }
 362
 363         private static BigDecimal bandwidthToBigDecimal(final Bandwidth bandwidth) {
 364                 return BigDecimal.valueOf(bandwidthToFloat(bandwidth));
 365         }
 366
 367         private static List<UnreservedBandwidth> unreservedBandwidthList(
 368                         final List<? extends org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.UnreservedBandwidth> input) {
 369                 final List<UnreservedBandwidth> ret = new ArrayList<>(input.size());
 370
 371                 for (final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.UnreservedBandwidth i : input) {
 372                         ret.add(new UnreservedBandwidthBuilder().setBandwidth(bandwidthToBigDecimal(i.getBandwidth())).setKey(
 373                                         new UnreservedBandwidthKey(i.getPriority())).build());
 374                 }
 375
 376                 return ret;
 377         }
 378
 379         private org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.IgpLinkAttributes1 isisLinkAttributes(
 380                         final TopologyIdentifier topologyIdentifier, final LinkAttributes la) {
 381                 final org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.isis.link.attributes.isis.link.attributes.TedBuilder tb = new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.isis.link.attributes.isis.link.attributes.TedBuilder();
 382
 383                 if (la != null) {
 384                         if (la.getAdminGroup() != null) {
 385                                 tb.setColor(la.getAdminGroup().getValue());
 386                         }
 387                         if (la.getTeMetric() != null) {
 388                                 tb.setTeDefaultMetric(la.getTeMetric().getValue());
 389                         }
 390                         if (la.getUnreservedBandwidth() != null) {
 391                                 tb.setUnreservedBandwidth(unreservedBandwidthList(la.getUnreservedBandwidth()));
 392                         }
 393                         if (la.getMaxLinkBandwidth() != null) {
 394                                 tb.setMaxLinkBandwidth(bandwidthToBigDecimal(la.getMaxLinkBandwidth()));
 395                         }
 396                         if (la.getMaxReservableBandwidth() != null) {
 397                                 tb.setMaxResvLinkBandwidth(bandwidthToBigDecimal(la.getMaxReservableBandwidth()));
 398                         }
 399                 }
 400
 401                 final IsisLinkAttributesBuilder ilab = new IsisLinkAttributesBuilder();
 402                 ilab.setTed(tb.build());
 403                 if (topologyIdentifier != null) {
 404                         ilab.setMultiTopologyId(topologyIdentifier.getValue().shortValue());
 405                 }
 406
 407                 return new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.IgpLinkAttributes1Builder().setIsisLinkAttributes(
 408                                 ilab.build()).build();
 409         }
 410
 411         private org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.IgpLinkAttributes1 ospfLinkAttributes(
 412                         final TopologyIdentifier topologyIdentifier, final LinkAttributes la) {
 413                 final org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.link.attributes.ospf.link.attributes.TedBuilder tb = new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.link.attributes.ospf.link.attributes.TedBuilder();
 414
 415                 if (la != null) {
 416                         if (la.getAdminGroup() != null) {
 417                                 tb.setColor(la.getAdminGroup().getValue());
 418                         }
 419                         if (la.getTeMetric() != null) {
 420                                 tb.setTeDefaultMetric(la.getTeMetric().getValue());
 421                         }
 422                         if (la.getUnreservedBandwidth() != null) {
 423                                 tb.setUnreservedBandwidth(unreservedBandwidthList(la.getUnreservedBandwidth()));
 424                         }
 425                         if (la.getMaxLinkBandwidth() != null) {
 426                                 tb.setMaxLinkBandwidth(bandwidthToBigDecimal(la.getMaxLinkBandwidth()));
 427                         }
 428                         if (la.getMaxReservableBandwidth() != null) {
 429                                 tb.setMaxResvLinkBandwidth(bandwidthToBigDecimal(la.getMaxReservableBandwidth()));
 430                         }
 431                 }
 432
 433                 final OspfLinkAttributesBuilder ilab = new OspfLinkAttributesBuilder();
 434                 ilab.setTed(tb.build());
 435                 if (topologyIdentifier != null) {
 436                         ilab.setMultiTopologyId(topologyIdentifier.getValue().shortValue());
 437                 }
 438
 439                 return new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.IgpLinkAttributes1Builder().setOspfLinkAttributes(
 440                                 ilab.build()).build();
 441         }
 442
 443         private NodeHolder getNode(final NodeId id) {
 444                 if (this.nodes.containsKey(id)) {
 445                         LOG.debug("Node {} is already present", id);
 446                         return this.nodes.get(id);
 447                 }
 448
 449                 final NodeHolder ret = new NodeHolder(id);
 450                 this.nodes.put(id, ret);
 451                 return ret;
 452         }
 453
 454         private void putNode(final DataModification<InstanceIdentifier<?>, DataObject> trans, final NodeHolder holder) {
 455                 if (holder.syncState(trans)) {
 456                         this.nodes.remove(holder.getNodeId());
 457                 }
 458         }
 459
 460         private void createLink(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base,
 461                         final LinkstateRoute value, final LinkCase l, final Attributes attributes) {
 462                 final LinkAttributes la = ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.attributes.attribute.type.LinkCase) attributes.getAugmentation(
 463                                 Attributes1.class).getAttributeType()).getLinkAttributes();
 464
 465                 final IgpLinkAttributesBuilder ilab = new IgpLinkAttributesBuilder();
 466                 if (la != null) {
 467                         if (la.getMetric() != null) {
 468                                 ilab.setMetric(la.getMetric().getValue());
 469                         }
 470                         ilab.setName(la.getLinkName());
 471                 }
 472
 473                 switch (value.getProtocolId()) {
 474                 case Direct:
 475                 case Static:
 476                 case Unknown:
 477                         break;
 478                 case IsisLevel1:
 479                 case IsisLevel2:
 480                         ilab.addAugmentation(
 481                                         org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.IgpLinkAttributes1.class,
 482                                         isisLinkAttributes(l.getLinkDescriptors().getMultiTopologyId(), la));
 483                         break;
 484                 case Ospf:
 485                         ilab.addAugmentation(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.IgpLinkAttributes1.class,
 486                                         ospfLinkAttributes(l.getLinkDescriptors().getMultiTopologyId(), la));
 487                         break;
 488                 }
 489
 490                 final LinkBuilder lb = new LinkBuilder();
 491                 lb.setLinkId(buildLinkId(base, l));
 492                 lb.addAugmentation(Link1.class, new Link1Builder().setIgpLinkAttributes(ilab.build()).build());
 493
 494                 final NodeId srcNode = buildNodeId(base, l.getLocalNodeDescriptors());
 495                 LOG.debug("Link {} implies source node {}", l, srcNode);
 496
 497                 final NodeId dstNode = buildNodeId(base, l.getRemoteNodeDescriptors());
 498                 LOG.debug("Link {} implies destination node {}", l, dstNode);
 499
 500                 final TerminationPoint srcTp = buildLocalTp(base, l.getLinkDescriptors());
 501                 LOG.debug("Link {} implies source TP {}", l, srcTp);
 502
 503                 final TerminationPoint dstTp = buildRemoteTp(base, l.getLinkDescriptors());
 504                 LOG.debug("Link {} implies destination TP {}", l, dstTp);
 505
 506                 lb.setSource(new SourceBuilder().setSourceNode(srcNode).setSourceTp(srcTp.getTpId()).build());
 507                 lb.setDestination(new DestinationBuilder().setDestNode(dstNode).setDestTp(dstTp.getTpId()).build());
 508
 509                 final NodeHolder snh = getNode(srcNode);
 510                 snh.addTp(srcTp, lb.getLinkId(), false);
 511                 LOG.debug("Created TP {} as link source", srcTp);
 512                 putNode(trans, snh);
 513
 514                 final NodeHolder dnh = getNode(dstNode);
 515                 dnh.addTp(dstTp, lb.getLinkId(), true);
 516                 LOG.debug("Created TP {} as link destination", dstTp);
 517                 putNode(trans, dnh);
 518
 519                 final InstanceIdentifier<?> lid = buildLinkIdentifier(base, lb.getLinkId());
 520                 final Link link = lb.build();
 521
 522                 /*
 523                  * Transaction's putOperationalData() does a merge. Force it onto a replace
 524                  * by removing the data.
 525                  */
 526                 trans.removeOperationalData(lid);
 527                 trans.putOperationalData(lid, link);
 528                 LOG.debug("Created link {} at {} for {}", link, lid, l);
 529         }
 530
 531         private void removeTp(final DataModification<InstanceIdentifier<?>, DataObject> trans, final NodeId node, final TpId tp,
 532                         final LinkId link, final boolean isRemote) {
 533                 final NodeHolder nh = this.nodes.get(node);
 534                 if (nh != null) {
 535                         nh.removeTp(tp, link, isRemote);
 536                         putNode(trans, nh);
 537                 } else {
 538                         LOG.warn("Removed non-existent node {}", node);
 539                 }
 540         }
 541
 542         private void removeLink(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base, final LinkCase l) {
 543                 final LinkId id = buildLinkId(base, l);
 544                 final InstanceIdentifier<?> lid = buildLinkIdentifier(base, id);
 545                 trans.removeOperationalData(lid);
 546                 LOG.debug("Removed link {}", lid);
 547
 548                 removeTp(trans, buildNodeId(base, l.getLocalNodeDescriptors()), buildLocalTpId(base, l.getLinkDescriptors()), id, false);
 549                 removeTp(trans, buildNodeId(base, l.getRemoteNodeDescriptors()), buildRemoteTpId(base, l.getLinkDescriptors()), id, true);
 550         }
 551
 552         private List<Short> nodeMultiTopology(final List<TopologyIdentifier> list) {
 553                 final List<Short> ret = new ArrayList<>(list.size());
 554                 for (final TopologyIdentifier id : list) {
 555                         ret.add(id.getValue().shortValue());
 556                 }
 557                 return ret;
 558         }
 559
 560         private org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.IgpNodeAttributes1 isisNodeAttributes(
 561                         final NodeIdentifier node, final NodeAttributes na) {
 562                 final org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.isis.node.attributes.isis.node.attributes.TedBuilder tb = new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.isis.node.attributes.isis.node.attributes.TedBuilder();
 563                 final IsisNodeAttributesBuilder ab = new IsisNodeAttributesBuilder();
 564
 565                 if (na != null) {
 566                         if (na.getIpv4RouterId() != null) {
 567                                 tb.setTeRouterIdIpv4(na.getIpv4RouterId());
 568                         }
 569                         if (na.getIpv6RouterId() != null) {
 570                                 tb.setTeRouterIdIpv6(na.getIpv6RouterId());
 571                         }
 572                         if (na.getTopologyIdentifier() != null) {
 573                                 ab.setMultiTopologyId(nodeMultiTopology(na.getTopologyIdentifier()));
 574                         }
 575                 }
 576
 577                 final CRouterIdentifier ri = node.getCRouterIdentifier();
 578                 if (ri instanceof IsisPseudonodeCase) {
 579                         final IsisPseudonode pn = ((IsisPseudonodeCase) ri).getIsisPseudonode();
 580                         ab.setIso(new IsoBuilder().setIsoPseudonodeId(new IsoPseudonodeId(pn.toString())).build());
 581                 } else if (ri instanceof IsisNodeCase) {
 582                         final IsisNode in = ((IsisNodeCase) ri).getIsisNode();
 583                         ab.setIso(new IsoBuilder().setIsoSystemId(new IsoSystemId(in.getIsoSystemId().toString())).build());
 584                 }
 585
 586                 ab.setTed(tb.build());
 587
 588                 return new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.IgpNodeAttributes1Builder().setIsisNodeAttributes(
 589                                 ab.build()).build();
 590         }
 591
 592         private org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.IgpNodeAttributes1 ospfNodeAttributes(
 593                         final NodeDescriptors node, final NodeAttributes na) {
 594                 final org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.node.attributes.ospf.node.attributes.TedBuilder tb = new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.node.attributes.ospf.node.attributes.TedBuilder();
 595                 final OspfNodeAttributesBuilder ab = new OspfNodeAttributesBuilder();
 596
 597                 if (na != null) {
 598                         if (na.getIpv4RouterId() != null) {
 599                                 tb.setTeRouterIdIpv4(na.getIpv4RouterId());
 600                         }
 601                         if (na.getIpv6RouterId() != null) {
 602                                 tb.setTeRouterIdIpv6(na.getIpv6RouterId());
 603                         }
 604                         if (na.getTopologyIdentifier() != null) {
 605                                 ab.setMultiTopologyId(nodeMultiTopology(na.getTopologyIdentifier()));
 606                         }
 607                 }
 608
 609                 final CRouterIdentifier ri = node.getCRouterIdentifier();
 610                 if (ri instanceof OspfPseudonodeCase) {
 611                         final OspfPseudonode pn = ((OspfPseudonodeCase) ri).getOspfPseudonode();
 612
 613                         ab.setRouterType(new PseudonodeBuilder().setPseudonode(Boolean.TRUE).build());
 614                         ab.setDrInterfaceId(pn.getLanInterface().getValue());
 615                 } else if (ri instanceof OspfNodeCase) {
 616                         final OspfNode in = ((OspfNodeCase) ri).getOspfNode();
 617
 618                         // TODO: what should we do with in.getOspfRouterId()?
 619
 620                         if (na != null) {
 621                                 final NodeFlagBits nf = na.getNodeFlags();
 622                                 if (nf != null) {
 623                                         if (nf.isAbr()) {
 624                                                 ab.setRouterType(new AbrBuilder().setAbr(Boolean.TRUE).build());
 625                                         } else if (!nf.isExternal()) {
 626                                                 ab.setRouterType(new InternalBuilder().setInternal(Boolean.TRUE).build());
 627                                         }
 628                                 }
 629                         }
 630                 }
 631
 632                 ab.setTed(tb.build());
 633
 634                 return new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.IgpNodeAttributes1Builder().setOspfNodeAttributes(
 635                                 ab.build()).build();
 636         }
 637
 638         private void createNode(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base,
 639                         final LinkstateRoute value, final NodeCase n, final Attributes attributes) {
 640                 final NodeAttributes na = ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.attributes.attribute.type.NodeCase) attributes.getAugmentation(
 641                                 Attributes1.class).getAttributeType()).getNodeAttributes();
 642                 final IgpNodeAttributesBuilder inab = new IgpNodeAttributesBuilder();
 643
 644                 final List<IpAddress> ids = new ArrayList<>();
 645                 if (na != null) {
 646                         if (na.getIpv4RouterId() != null) {
 647                                 ids.add(new IpAddress(na.getIpv4RouterId()));
 648                         }
 649                         if (na.getIpv6RouterId() != null) {
 650                                 ids.add(new IpAddress(na.getIpv6RouterId()));
 651                         }
 652                         if (na.getDynamicHostname() != null) {
 653                                 inab.setName(new DomainName(na.getDynamicHostname()));
 654                         }
 655                 }
 656
 657                 if (!ids.isEmpty()) {
 658                         inab.setRouterId(ids);
 659                 }
 660
 661                 switch (value.getProtocolId()) {
 662                 case Direct:
 663                 case Static:
 664                 case Unknown:
 665                         break;
 666                 case IsisLevel1:
 667                 case IsisLevel2:
 668                         inab.addAugmentation(
 669                                         org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.IgpNodeAttributes1.class,
 670                                         isisNodeAttributes(n.getNodeDescriptors(), na));
 671                         break;
 672                 case Ospf:
 673                         inab.addAugmentation(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.IgpNodeAttributes1.class,
 674                                         ospfNodeAttributes(n.getNodeDescriptors(), na));
 675                         break;
 676                 }
 677
 678                 final NodeId nid = buildNodeId(base, n.getNodeDescriptors());
 679                 final NodeHolder nh = getNode(nid);
 680
 681                 /*
 682                  *  Eventhough the the holder creates a dummy structure, we need to duplicate it here,
 683                  *  as that is the API requirement. The reason for it is the possible presence of supporting
 684                  *  node -- something which the holder does not track.
 685                  */
 686                 final NodeBuilder nb = new NodeBuilder();
 687                 nb.setNodeId(nid);
 688                 nb.setKey(new NodeKey(nb.getNodeId()));
 689
 690                 nh.advertized(nb, inab);
 691                 putNode(trans, nh);
 692         }
 693
 694         private void removeNode(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base, final NodeCase n) {
 695                 final NodeId id = buildNodeId(base, n.getNodeDescriptors());
 696                 final NodeHolder nh = this.nodes.get(id);
 697                 if (nh != null) {
 698                         nh.unadvertized();
 699                         putNode(trans, nh);
 700                 } else {
 701                         LOG.warn("Node {} does not have a holder", id);
 702                 }
 703         }
 704
 705         private void createPrefix(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base,
 706                         final LinkstateRoute value, final PrefixCase p, final Attributes attributes) {
 707                 final IpPrefix ippfx = p.getIpReachabilityInformation();
 708                 if (ippfx == null) {
 709                         LOG.warn("IP reachability not present in prefix {} route {}, skipping it", p, value);
 710                         return;
 711                 }
 712
 713                 final PrefixBuilder pb = new PrefixBuilder();
 714                 pb.setKey(new PrefixKey(ippfx));
 715                 pb.setPrefix(ippfx);
 716
 717                 final PrefixAttributes pa = ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.bgp.rib.rib.loc.rib.tables.routes.linkstate.routes._case.linkstate.routes.linkstate.route.attributes.attribute.type.PrefixCase) attributes.getAugmentation(
 718                                 Attributes1.class).getAttributeType()).getPrefixAttributes();
 719                 if (pa != null) {
 720                         pb.setMetric(pa.getPrefixMetric().getValue());
 721                 }
 722
 723                 switch (value.getProtocolId()) {
 724                 case Direct:
 725                 case IsisLevel1:
 726                 case IsisLevel2:
 727                 case Static:
 728                 case Unknown:
 729                         break;
 730                 case Ospf:
 731                         if (pa != null) {
 732                                 pb.addAugmentation(
 733                                                 Prefix1.class,
 734                                                 new Prefix1Builder().setOspfPrefixAttributes(
 735                                                                 new OspfPrefixAttributesBuilder().setForwardingAddress(pa.getOspfForwardingAddress().getIpv4Address()).build()).build());
 736                         }
 737                         break;
 738                 }
 739
 740                 final Prefix pfx = pb.build();
 741
 742                 /*
 743                  * All set, but... the hosting node may not exist, we may need to fake it.
 744                  */
 745                 final NodeId node = buildNodeId(base, p.getAdvertisingNodeDescriptors());
 746                 final NodeHolder nh = getNode(node);
 747                 nh.addPrefix(pfx);
 748                 LOG.debug("Created prefix {} for {}", pfx, p);
 749                 putNode(trans, nh);
 750         }
 751
 752         private void removePrefix(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base, final PrefixCase p) {
 753                 final NodeId node = buildNodeId(base, p.getAdvertisingNodeDescriptors());
 754                 final NodeHolder nh = this.nodes.get(node);
 755                 if (nh != null) {
 756                         nh.removePrefix(p);
 757                         LOG.debug("Removed prefix {}", p);
 758                         putNode(trans, nh);
 759                 } else {
 760                         LOG.warn("Removing prefix from non-existing node {}", node);
 761                 }
 762         }
 763
 764         @Override
 765         protected void createObject(final DataModification<InstanceIdentifier<?>, DataObject> trans,
 766                         final InstanceIdentifier<LinkstateRoute> id, final LinkstateRoute value) {
 767                 final UriBuilder base = new UriBuilder(value);
 768
 769                 final ObjectType t = value.getObjectType();
 770                 if (t instanceof LinkCase) {
 771                         createLink(trans, base, value, (LinkCase) t, value.getAttributes());
 772                 } else if (t instanceof NodeCase) {
 773                         createNode(trans, base, value, (NodeCase) t, value.getAttributes());
 774                 } else if (t instanceof PrefixCase) {
 775                         createPrefix(trans, base, value, (PrefixCase) t, value.getAttributes());
 776                 } else {
 777                         throw new IllegalStateException("Unhandled object class " + t.getImplementedInterface());
 778                 }
 779         }
 780
 781         @Override
 782         protected void removeObject(final DataModification<InstanceIdentifier<?>, DataObject> trans,
 783                         final InstanceIdentifier<LinkstateRoute> id, final LinkstateRoute value) {
 784                 final UriBuilder base = new UriBuilder(value);
 785
 786                 final ObjectType t = value.getObjectType();
 787                 if (t instanceof LinkCase) {
 788                         removeLink(trans, base, (LinkCase) t);
 789                 } else if (t instanceof NodeCase) {
 790                         removeNode(trans, base, (NodeCase) t);
 791                 } else if (t instanceof PrefixCase) {
 792                         removePrefix(trans, base, (PrefixCase) t);
 793                 } else {
 794                         throw new IllegalStateException("Unhandled object class " + t.getImplementedInterface());
 795                 }
 796         }
 797 }