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