*/
package org.opendaylight.protocol.bgp.rib.impl;
-import com.google.common.base.Preconditions;
+import static java.util.Objects.requireNonNull;
+
import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.atomic.LongAdder;
+import java.util.stream.Collectors;
+import javax.annotation.Nonnull;
import javax.annotation.concurrent.NotThreadSafe;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.dom.api.ClusteredDOMDataTreeChangeListener;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeService;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeIdentifier;
+import org.opendaylight.protocol.bgp.rib.impl.spi.Codecs;
+import org.opendaylight.protocol.bgp.rib.impl.spi.CodecsRegistry;
+import org.opendaylight.protocol.bgp.rib.impl.state.peer.PrefixesSentCounters;
+import org.opendaylight.protocol.bgp.rib.spi.IdentifierUtils;
import org.opendaylight.protocol.bgp.rib.spi.RIBSupport;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.UpdateBuilder;
+import org.opendaylight.protocol.bgp.rib.spi.RibSupportUtils;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4Route;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.PathId;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.Update;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.UpdateBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.update.message.Nlri;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.update.message.NlriBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.update.message.WithdrawnRoutes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.update.message.WithdrawnRoutesBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.PeerId;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.Peer;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.peer.AdjRibOut;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.Tables;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
+import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* Instantiated for each peer and table, listens on a particular peer's adj-rib-out,
* performs transcoding to BA form (message) and sends it down the channel.
*/
@NotThreadSafe
-final class AdjRibOutListener implements DOMDataTreeChangeListener {
+final class AdjRibOutListener implements ClusteredDOMDataTreeChangeListener, PrefixesSentCounters {
+
+ private static final Logger LOG = LoggerFactory.getLogger(AdjRibOutListener.class);
+
+ private static final QName PREFIX_QNAME = QName.create(Ipv4Route.QNAME, "prefix").intern();
+ private static final QName PATHID_QNAME = QName.create(Ipv4Route.QNAME, "path-id").intern();
+ private final YangInstanceIdentifier.NodeIdentifier routeKeyPrefixLeaf = new YangInstanceIdentifier
+ .NodeIdentifier(PREFIX_QNAME);
+ private final YangInstanceIdentifier.NodeIdentifier routeKeyPathIdLeaf = new YangInstanceIdentifier
+ .NodeIdentifier(PATHID_QNAME);
+
private final ChannelOutputLimiter session;
- private final RIBSupport ribSupport;
+ private final Codecs codecs;
+ private final RIBSupport<?, ?, ?, ?> support;
+ private final boolean mpSupport;
+ private final ListenerRegistration<AdjRibOutListener> registerDataTreeChangeListener;
+ private final LongAdder prefixesSentCounter = new LongAdder();
- AdjRibOutListener(final RIBSupport ribSupport, final ChannelOutputLimiter session) {
- this.ribSupport = Preconditions.checkNotNull(ribSupport);
- this.session = Preconditions.checkNotNull(session);
+ private AdjRibOutListener(final PeerId peerId, final TablesKey tablesKey, final YangInstanceIdentifier ribId,
+ final CodecsRegistry registry, final RIBSupport<?, ?, ?, ?> support, final DOMDataTreeChangeService service,
+ final ChannelOutputLimiter session, final boolean mpSupport) {
+ this.session = requireNonNull(session);
+ this.support = requireNonNull(support);
+ this.codecs = registry.getCodecs(this.support);
+ this.mpSupport = mpSupport;
+ final YangInstanceIdentifier adjRibOutId = ribId.node(Peer.QNAME).node(IdentifierUtils.domPeerId(peerId))
+ .node(AdjRibOut.QNAME).node(Tables.QNAME).node(RibSupportUtils.toYangTablesKey(tablesKey));
+ this.registerDataTreeChangeListener = service.registerDataTreeChangeListener(
+ new DOMDataTreeIdentifier(LogicalDatastoreType.OPERATIONAL, adjRibOutId), this);
+ }
+
+ static AdjRibOutListener create(
+ @Nonnull final PeerId peerId,
+ @Nonnull final TablesKey tablesKey,
+ @Nonnull final YangInstanceIdentifier ribId,
+ @Nonnull final CodecsRegistry registry,
+ @Nonnull final RIBSupport<?, ?, ?, ?> support,
+ @Nonnull final DOMDataTreeChangeService service,
+ @Nonnull final ChannelOutputLimiter session,
+ final boolean mpSupport) {
+ return new AdjRibOutListener(peerId, tablesKey, ribId, registry, support, service, session, mpSupport);
}
@Override
public void onDataTreeChanged(final Collection<DataTreeCandidate> changes) {
- for (DataTreeCandidate tc : changes) {
- final UpdateBuilder ub = new UpdateBuilder();
+ LOG.debug("Data change received for AdjRibOut {}", changes);
+ for (final DataTreeCandidate tc : changes) {
+ LOG.trace("Change {} type {}", tc.getRootNode(), tc.getRootNode().getModificationType());
+ for (final DataTreeCandidateNode child : tc.getRootNode().getChildNodes()) {
+ processSupportedFamilyRoutes(child);
+ }
+ }
+ this.session.flush();
+ }
+
+ private void processSupportedFamilyRoutes(final DataTreeCandidateNode child) {
+ final Collection<DataTreeCandidateNode> changedRoutes = this.support.changedRoutes(child);
+ for (final DataTreeCandidateNode route : changedRoutes) {
+ processRouteChange(route);
+ }
+ }
+
+ private void processRouteChange(final DataTreeCandidateNode route) {
+ final Update update;
+ switch (route.getModificationType()) {
+ case UNMODIFIED:
+ LOG.debug("Skipping unmodified route {}", route.getIdentifier());
+ return;
+ case DELETE:
+ case DISAPPEARED:
+ // FIXME: we can batch deletions into a single batch
+ update = withdraw((MapEntryNode) route.getDataBefore().get());
+ LOG.debug("Withdrawing routes {}", update);
+ break;
+ case APPEARED:
+ case SUBTREE_MODIFIED:
+ case WRITE:
+ update = advertise((MapEntryNode) route.getDataAfter().get());
+ LOG.debug("Advertising routes {}", update);
+ break;
+ default:
+ LOG.warn("Ignoring unhandled modification type {}", route.getModificationType());
+ return;
+ }
+ this.session.write(update);
+ }
+
+ private Attributes routeAttributes(final MapEntryNode route) {
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("AdjRibOut parsing route {}", NormalizedNodes.toStringTree(route));
+ }
+ final ContainerNode advertisedAttrs = (ContainerNode) NormalizedNodes.findNode(route,
+ this.support.routeAttributesIdentifier()).orElse(null);
+ return this.codecs.deserializeAttributes(advertisedAttrs);
+ }
- // FIXME: fill the structure
+ private Update withdraw(final MapEntryNode route) {
+ if (!this.mpSupport) {
+ return buildUpdate(Collections.emptyList(), Collections.singleton(route), routeAttributes(route));
+ }
+ return this.support.buildUpdate(Collections.emptyList(), Collections.singleton(route), routeAttributes(route));
+ }
- session.write(ub.build());
+ private Update advertise(final MapEntryNode route) {
+ this.prefixesSentCounter.increment();
+ if (!this.mpSupport) {
+ return buildUpdate(Collections.singleton(route), Collections.emptyList(), routeAttributes(route));
}
+ return this.support.buildUpdate(Collections.singleton(route), Collections.emptyList(), routeAttributes(route));
+ }
+
+ private Update buildUpdate(
+ @Nonnull final Collection<MapEntryNode> advertised,
+ @Nonnull final Collection<MapEntryNode> withdrawn,
+ @Nonnull final Attributes attr) {
+ final UpdateBuilder ub = new UpdateBuilder().setWithdrawnRoutes(extractWithdrawnRoutes(withdrawn))
+ .setNlri(extractNlris(advertised));
+ ub.setAttributes(attr);
+ return ub.build();
+ }
+
+ private List<Nlri> extractNlris(final Collection<MapEntryNode> routes) {
+ return routes.stream().map(ipv4Route -> new NlriBuilder().setPrefix(new Ipv4Prefix(extractPrefix(ipv4Route)))
+ .setPathId(extractPathId(ipv4Route)).build()).collect(Collectors.toList());
+ }
+
+ private List<WithdrawnRoutes> extractWithdrawnRoutes(final Collection<MapEntryNode> routes) {
+ return routes.stream().map(ipv4Route -> new WithdrawnRoutesBuilder()
+ .setPrefix(new Ipv4Prefix(extractPrefix(ipv4Route))).setPathId(extractPathId(ipv4Route)).build())
+ .collect(Collectors.toList());
+ }
- session.flush();
+ private String extractPrefix(final MapEntryNode ipv4Route) {
+ return (String) ipv4Route.getChild(this.routeKeyPrefixLeaf).get().getValue();
}
+ private PathId extractPathId(final MapEntryNode ipv4Route) {
+ final Optional<DataContainerChild<? extends PathArgument, ?>> pathId = ipv4Route
+ .getChild(this.routeKeyPathIdLeaf);
+ return pathId.map(dataContainerChild -> new PathId((Long) dataContainerChild.getValue())).orElse(null);
+ }
+
+ public void close() {
+ this.registerDataTreeChangeListener.close();
+ }
+
+ boolean isMpSupported() {
+ return this.mpSupport;
+ }
+
+ @Override
+ public long getPrefixesSentCount() {
+ return this.prefixesSentCounter.longValue();
+ }
}
Code Review / bgpcep.git / blobdiff