import java.math.BigDecimal;
import java.nio.ByteBuffer;
import java.util.ArrayList;
+import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
+import java.util.Map;
import java.util.Set;
import org.opendaylight.controller.md.sal.common.api.data.DataModification;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TpId;
-import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.Destination;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.DestinationBuilder;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.SourceBuilder;
-import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkBuilder;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkKey;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.ospf.topology.rev131021.ospf.prefix.attributes.OspfPrefixAttributesBuilder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
+import com.google.common.base.Function;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Collections2;
import com.google.common.collect.Lists;
public final class LinkstateTopologyBuilder extends AbstractTopologyBuilder<LinkstateRoute> {
+ private static final class TpHolder {
+ private final Set<LinkId> local = new HashSet<>();
+ private final Set<LinkId> remote = new HashSet<>();
+
+ private final TerminationPoint tp;
+
+ private TpHolder(final TerminationPoint tp) {
+ this.tp = Preconditions.checkNotNull(tp);
+ }
+
+ private synchronized void addLink(final LinkId id, final boolean isRemote) {
+ if (isRemote) {
+ remote.add(id);
+ } else {
+ local.add(id);
+ }
+ }
+
+ private synchronized boolean removeLink(final LinkId id, final boolean isRemote) {
+ final boolean removed;
+ if (isRemote) {
+ removed = remote.remove(id);
+ } else {
+ removed = local.remove(id);
+ }
+ if (!removed) {
+ LOG.warn("Removed non-reference link {} from TP {} isRemote {}", tp.getTpId(), id, isRemote);
+ }
+
+ return local.isEmpty() && remote.isEmpty();
+ }
+
+ private TerminationPoint getTp() {
+ return tp;
+ }
+ }
+
+ private final class NodeHolder {
+ final Map<PrefixKey, Prefix> prefixes = new HashMap<>();
+ final Map<TpId, TpHolder> tps = new HashMap<>();
+ boolean advertized = false;
+ IgpNodeAttributesBuilder inab;
+ NodeBuilder nb;
+
+ private NodeHolder(final NodeId id) {
+ inab = new IgpNodeAttributesBuilder();
+ nb = new NodeBuilder().setKey(new NodeKey(id)).setNodeId(id);
+ }
+
+ /**
+ * Synchronized in-core state of a node into the backing store using the transaction
+ *
+ * @param trans data modification transaction which to use
+ * @return True if the node has been purged, false otherwise.
+ */
+ private boolean syncState(final DataModification<InstanceIdentifier<?>, DataObject> trans) {
+ final InstanceIdentifier<Node> nid = InstanceIdentifier.builder(getInstanceIdentifier()).child(
+ org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
+ nb.getKey()).build();
+ if (!advertized) {
+ if (tps.isEmpty() && prefixes.isEmpty()) {
+ LOG.debug("Removing unadvertized unused node {}", nb.getNodeId());
+ trans.removeOperationalData(nid);
+ return true;
+ }
+
+ LOG.debug("Node {} is still implied by {} TPs and {} prefixes", tps.size(), prefixes.size());
+ }
+
+ // Re-generate termination points
+ nb.setTerminationPoint(Lists.newArrayList(Collections2.transform(tps.values(), new Function<TpHolder, TerminationPoint>() {
+ @Override
+ public TerminationPoint apply(final TpHolder input) {
+ return input.getTp();
+ }
+ })));
+
+ // Re-generate prefixes
+ inab.setPrefix(Lists.newArrayList(prefixes.values()));
+
+ // Write the node out
+ final Node n = nb.addAugmentation(Node1.class, new Node1Builder().setIgpNodeAttributes(inab.build()).build()).build();
+ trans.putOperationalData(nid, n);
+ LOG.debug("Created node {} at {}", n, nid);
+ return false;
+ }
+
+ private synchronized void removeTp(final TpId tp, final LinkId link, final boolean isRemote) {
+ final TpHolder h = tps.get(tp);
+ if (h != null) {
+ if (h.removeLink(link, isRemote)) {
+ tps.remove(tp);
+ LOG.debug("Removed TP {}", tp);
+ }
+ } else {
+ LOG.warn("Removed non-present TP {} by link {}", tp, link);
+ }
+ }
+
+ private void addTp(final TerminationPoint tp, final LinkId link, final boolean isRemote) {
+ TpHolder h = tps.get(tp.getTpId());
+ if (h == null) {
+ h = new TpHolder(tp);
+ tps.put(tp.getTpId(), h);
+ }
+
+ h.addLink(link, isRemote);
+ }
+
+ private void addPrefix(final Prefix pfx) {
+ prefixes.put(pfx.getKey(), pfx);
+ }
+
+ private void removePrefix(final PrefixCase p) {
+ prefixes.remove(new PrefixKey(p.getIpReachabilityInformation()));
+ }
+
+ private void unadvertized() {
+ inab = new IgpNodeAttributesBuilder();
+ nb = new NodeBuilder().setKey(nb.getKey()).setNodeId(nb.getNodeId());
+ advertized = false;
+ LOG.debug("Node {} is unadvertized", nb.getNodeId());
+ }
+
+ private void advertized(final NodeBuilder nb, final IgpNodeAttributesBuilder inab) {
+ this.nb = Preconditions.checkNotNull(nb);
+ this.inab = Preconditions.checkNotNull(inab);
+ advertized = true;
+ LOG.debug("Node {} is advertized", nb.getNodeId());
+ }
+
+ private Object getNodeId() {
+ return nb.getNodeId();
+ }
+ }
+
private static final Logger LOG = LoggerFactory.getLogger(LinkstateTopologyBuilder.class);
- private final Set<NodeId> impliedNodes = new HashSet<>();
+ private final Map<NodeId, NodeHolder> nodes = new HashMap<>();
public LinkstateTopologyBuilder(final DataProviderService dataProvider, final RibReference locRibReference, final TopologyId topologyId) {
super(dataProvider, locRibReference, topologyId, new TopologyTypesBuilder().addAugmentation(TopologyTypes1.class,
return buildTp(id, t);
}
- private InstanceIdentifier<?> buildLinkIdentifier(final UriBuilder base, final LinkCase l) {
+ private InstanceIdentifier<?> buildLinkIdentifier(final UriBuilder base, final LinkId id) {
return InstanceIdentifier.builder(getInstanceIdentifier()).child(
org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link.class,
- new LinkKey(buildLinkId(base, l))).toInstance();
+ new LinkKey(id)).toInstance();
}
private static Float bandwidthToFloat(final Bandwidth bandwidth) {
ilab.build()).build();
}
- private void ensureNodePresent(final DataModification<InstanceIdentifier<?>, DataObject> trans, final NodeId id) {
- final InstanceIdentifier<Node> nid = InstanceIdentifier.builder(getInstanceIdentifier()).child(
- org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
- new NodeKey(id)).build();
- if (trans.readOperationalData(nid) == null) {
- createImpliedNode(trans, nid, id, new ArrayList<TerminationPoint>());
- } else {
- LOG.debug("Node {} is already present at {}", id, nid);
+ private NodeHolder getNode(final NodeId id) {
+ if (nodes.containsKey(id)) {
+ LOG.debug("Node {} is already present", id);
+ return nodes.get(id);
}
- }
- private void createImpliedNode(final DataModification<InstanceIdentifier<?>, DataObject> trans,
- final InstanceIdentifier<Node> nid, final NodeId id, final List<TerminationPoint> tp) {
- final Node node = new NodeBuilder().setKey(new NodeKey(id)).setNodeId(id).setTerminationPoint(tp).build();
- trans.putOperationalData(nid, node);
- impliedNodes.add(id);
- LOG.debug("Created an implied node {} at {}", node, nid);
+ final NodeHolder ret = new NodeHolder(id);
+ nodes.put(id, ret);
+ return ret;
}
- private void removeImpliedNode(final DataModification<InstanceIdentifier<?>, DataObject> trans, final NodeId id) {
- if (impliedNodes.contains(id)) {
- final InstanceIdentifier<Node> nid = InstanceIdentifier.builder(getInstanceIdentifier()).child(
- org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
- new NodeKey(id)).build();
- trans.removeOperationalData(nid);
- impliedNodes.remove(id);
- LOG.debug("Removed implied node {} from {}", id, nid);
- } else {
- LOG.debug("Node {} is advertised, not removing it");
+ private void putNode(final DataModification<InstanceIdentifier<?>, DataObject> trans, final NodeHolder holder) {
+ if (holder.syncState(trans)) {
+ nodes.remove(holder.getNodeId());
}
}
lb.setSource(new SourceBuilder().setSourceNode(srcNode).setSourceTp(srcTp.getTpId()).build());
lb.setDestination(new DestinationBuilder().setDestNode(dstNode).setDestTp(dstTp.getTpId()).build());
- ensureNodePresent(trans, srcNode);
- ensureNodePresent(trans, dstNode);
+ final NodeHolder snh = getNode(srcNode);
+ snh.addTp(srcTp, lb.getLinkId(), false);
+ putNode(trans, snh);
+ LOG.debug("Created TP {} as link source", srcTp);
- final InstanceIdentifier<TerminationPoint> stpId = buildTpIdentifier(srcNode, srcTp.getKey());
- trans.putOperationalData(stpId, srcTp);
- LOG.debug("Created TP {} at {} as link source", srcTp, stpId);
+ final NodeHolder dnh = getNode(dstNode);
+ dnh.addTp(dstTp, lb.getLinkId(), true);
+ putNode(trans, dnh);
+ LOG.debug("Created TP {} as link destination", dstTp);
- final InstanceIdentifier<TerminationPoint> dtpId = buildTpIdentifier(dstNode, dstTp.getKey());
- trans.putOperationalData(dtpId, dstTp);
- LOG.debug("Created TP {} at {} as link destination", dstTp, dtpId);
-
- final InstanceIdentifier<?> lid = buildLinkIdentifier(base, l);
+ final InstanceIdentifier<?> lid = buildLinkIdentifier(base, lb.getLinkId());
final Link link = lb.build();
+
trans.putOperationalData(lid, link);
LOG.debug("Created link {} at {} for {}", link, lid, l);
}
- private void removeLink(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base, final LinkCase l) {
- final InstanceIdentifier<?> lid = buildLinkIdentifier(base, l);
- trans.removeOperationalData(lid);
- LOG.debug("Removed link {}", lid);
-
- final NodeId srcNode = buildNodeId(base, l.getLocalNodeDescriptors());
- final NodeId dstNode = buildNodeId(base, l.getRemoteNodeDescriptors());
- final TpId srcTp = buildLocalTpId(base, l.getLinkDescriptors());
- final TpId dstTp = buildLocalTpId(base, l.getLinkDescriptors());
- LOG.debug("Cleaning up {}/{} and {}/{}", srcNode, srcTp, dstNode, dstTp);
-
- /*
- * This is ugly, but needed: we need to walk all the links and see if they reference
- * any of the termination points. If they do not, we remove them.
- */
- int stp = 0, dtp = 0, sn = 0, dn = 0;
- final List<Link> links = ((Topology) trans.readOperationalData(getInstanceIdentifier())).getLink();
- for (final Link wlk : links) {
- final org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.Source s = wlk.getSource();
- if (srcNode.equals(s.getSourceNode())) {
- sn++;
- }
- if (dstNode.equals(s.getSourceNode())) {
- dn++;
- }
- if (srcTp.equals(s.getSourceTp())) {
- stp++;
- }
- if (dstTp.equals(s.getSourceTp())) {
- dtp++;
- }
-
- final Destination d = wlk.getDestination();
- if (srcNode.equals(d.getDestNode())) {
- sn++;
- }
- if (dstNode.equals(d.getDestNode())) {
- dn++;
- }
- if (srcTp.equals(d.getDestTp())) {
- stp++;
- }
- if (dstTp.equals(d.getDestTp())) {
- dtp++;
- }
- }
-
- LOG.debug("References found {}/{} and {}/{}", sn, stp, dn, dtp);
- if (stp == 0) {
- removeTp(trans, srcNode, srcTp);
- }
- if (dtp == 0) {
- removeTp(trans, dstNode, dstTp);
- }
- if (sn == 0) {
- removeImpliedNode(trans, srcNode);
- }
- if (dn == 0) {
- removeImpliedNode(trans, dstNode);
+ private void removeTp(final DataModification<InstanceIdentifier<?>, DataObject> trans,
+ final NodeId node, final TpId tp, final LinkId link, final boolean isRemote) {
+ final NodeHolder nh = nodes.get(node);
+ if (nh != null) {
+ nh.removeTp(tp, link, isRemote);
+ putNode(trans, nh);
+ } else {
+ LOG.warn("Removed non-existent node {}", node);
}
}
- private void removeTp(final DataModification<InstanceIdentifier<?>, DataObject> trans, final NodeId node, final TpId tp) {
- final InstanceIdentifier<TerminationPoint> tpId = buildTpIdentifier(node, new TerminationPointKey(tp));
- trans.removeOperationalData(tpId);
- LOG.debug("Removed TP {} from {}", tp, tpId);
- }
-
- private InstanceIdentifierBuilder<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node> nodeIdentifierBuilder(
- final UriBuilder base, final NodeIdentifier node) {
- return InstanceIdentifier.builder(getInstanceIdentifier()).child(
- org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
- new NodeKey(buildNodeId(base, node)));
- }
+ private void removeLink(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base, final LinkCase l) {
+ final LinkId id = buildLinkId(base, l);
+ final InstanceIdentifier<?> lid = buildLinkIdentifier(base, id);
+ trans.removeOperationalData(lid);
+ LOG.debug("Removed link {}", lid);
- private InstanceIdentifier<TerminationPoint> buildTpIdentifier(final NodeId node, final TerminationPointKey key) {
- return InstanceIdentifier.builder(getInstanceIdentifier()).child(
- org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
- new NodeKey(node)).child(TerminationPoint.class, key).build();
+ removeTp(trans, buildNodeId(base, l.getLocalNodeDescriptors()), buildLocalTpId(base, l.getLinkDescriptors()), id, false);
+ removeTp(trans, buildNodeId(base, l.getRemoteNodeDescriptors()), buildRemoteTpId(base, l.getLinkDescriptors()), id, true);
}
private List<Short> nodeMultiTopology(final List<TopologyIdentifier> list) {
break;
}
+ final NodeId nid = buildNodeId(base, n.getNodeDescriptors());
+ final NodeHolder nh = getNode(nid);
+
+ /*
+ * Eventhough the the holder creates a dummy structure, we need to duplicate it here,
+ * as that is the API requirement. The reason for it is the possible presence of supporting
+ * node -- something which the holder does not track.
+ */
final NodeBuilder nb = new NodeBuilder();
- nb.setNodeId(buildNodeId(base, n.getNodeDescriptors()));
+ nb.setNodeId(nid);
nb.setKey(new NodeKey(nb.getNodeId()));
- nb.addAugmentation(Node1.class, new Node1Builder().setIgpNodeAttributes(inab.build()).build());
- final InstanceIdentifier<Node> nid = nodeIdentifierBuilder(base, n.getNodeDescriptors()).build();
- if (impliedNodes.contains(nb.getNodeId())) {
- LOG.debug("Implied node {} became advertized, promoting it", nb.getNodeId());
-
- final Node in = (Node)trans.readOperationalData(nid);
- if (in == null) {
- LOG.warn("Node {} is implied but does not exist in MD-SAL, losing termination points!", nid);
- } else {
- nb.setTerminationPoint(in.getTerminationPoint());
- }
- impliedNodes.remove(nb.getNodeId());
- } else {
- nb.setTerminationPoint(new ArrayList<TerminationPoint>());
- }
-
- final Node node = nb.build();
- trans.putOperationalData(nid, node);
- LOG.debug("Created node {} at {} for {}", node, nid, n);
+ nh.advertized(nb, inab);
+ putNode(trans, nh);
}
private void removeNode(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base, final NodeCase n) {
- final InstanceIdentifier<Node> nid = nodeIdentifierBuilder(base, n.getNodeDescriptors()).build();
- final Node node = (Node)trans.readOperationalData(nid);
- if (node != null) {
- LOG.debug("Removed node {}", nid);
- trans.removeOperationalData(nid);
-
- if (!node.getTerminationPoint().isEmpty()) {
- LOG.debug("Node {} at {} has termination points, creating an implied node", node.getNodeId(), nid);
- createImpliedNode(trans, nid, node.getNodeId(), node.getTerminationPoint());
- }
+ final NodeId id = buildNodeId(base, n.getNodeDescriptors());
+ final NodeHolder nh = nodes.get(id);
+ if (nh != null) {
+ nh.unadvertized();
+ putNode(trans, nh);
+ } else {
+ LOG.warn("Node {} does not have a holder", id);
}
}
- private InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.igp.node.attributes.Prefix> prefixIdentifier(
- final UriBuilder base, final PrefixCase p) {
- return nodeIdentifierBuilder(base, p.getAdvertisingNodeDescriptors()).augmentation(Node1.class).child(
- org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.IgpNodeAttributes.class).child(
- org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.igp.node.attributes.Prefix.class,
- new PrefixKey(p.getIpReachabilityInformation())).toInstance();
- }
-
private void createPrefix(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base,
final LinkstateRoute value, final PrefixCase p, final Attributes attributes) {
final IpPrefix ippfx = p.getIpReachabilityInformation();
break;
}
-
final Prefix pfx = pb.build();
- final InstanceIdentifier<Prefix> pid = prefixIdentifier(base, p);
- trans.putOperationalData(pid, pfx);
- LOG.debug("Created prefix {} at {} for {}", pfx, pid, p);
+
+ /*
+ * All set, but... the hosting node may not exist, we may need to fake it.
+ */
+ final NodeId node = buildNodeId(base, p.getAdvertisingNodeDescriptors());
+ final NodeHolder nh = getNode(node);
+ nh.addPrefix(pfx);
+ LOG.debug("Created prefix {} for {}", pfx, p);
+ putNode(trans, nh);
}
private void removePrefix(final DataModification<InstanceIdentifier<?>, DataObject> trans, final UriBuilder base, final PrefixCase p) {
- final InstanceIdentifier<Prefix> pid = prefixIdentifier(base, p);
- trans.removeOperationalData(pid);
- LOG.debug("Removed prefix {}");
+ final NodeId node = buildNodeId(base, p.getAdvertisingNodeDescriptors());
+ final NodeHolder nh = nodes.get(node);
+ if (nh != null) {
+ nh.removePrefix(p);
+ LOG.debug("Removed prefix {}", p);
+ putNode(trans, nh);
+ } else {
+ LOG.warn("Removing prefix from non-existing node {}", node);
+ }
}
@Override
Code Review / bgpcep.git / commitdiff