*/
package org.opendaylight.protocol.bgp.rib.impl;
-import com.google.common.base.Preconditions;
+import static java.util.Objects.requireNonNull;
+import static org.opendaylight.protocol.bgp.rib.spi.RIBNodeIdentifiers.ADJRIBOUT_NID;
+import static org.opendaylight.protocol.bgp.rib.spi.RIBNodeIdentifiers.PEER_NID;
+import static org.opendaylight.protocol.bgp.rib.spi.RIBNodeIdentifiers.TABLES_NID;
+
import java.util.Collection;
-import javax.annotation.concurrent.NotThreadSafe;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.atomic.LongAdder;
+import java.util.stream.Collectors;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
+import org.opendaylight.mdsal.dom.api.DOMDataBroker.DataTreeChangeExtension;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
+import org.opendaylight.mdsal.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.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
+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.rev200120.PathId;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.Update;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.UpdateBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.Attributes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.update.message.NlriBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.update.message.WithdrawnRoutesBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.PeerId;
+import org.opendaylight.yangtools.concepts.Registration;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.common.Uint32;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
+import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidate;
+import org.opendaylight.yangtools.yang.data.tree.api.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.
+ * 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. This class is NOT thread-safe.
*/
-@NotThreadSafe
-final class AdjRibOutListener implements DOMDataTreeChangeListener {
+final class AdjRibOutListener implements DOMDataTreeChangeListener, 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 static final NodeIdentifier ROUTE_KEY_PREFIX_LEAF = NodeIdentifier.create(PREFIX_QNAME);
+ private static final NodeIdentifier ROUTE_KEY_PATHID_LEAF = NodeIdentifier.create(PATHID_QNAME);
+
private final ChannelOutputLimiter session;
- private final RIBSupport ribSupport;
+ private final Codecs codecs;
+ private final RIBSupport<?, ?> support;
+ // FIXME: this field needs to be eliminated: either subclass this class or create a filtering ribsupport
+ private final boolean mpSupport;
+ private final Registration registerDataTreeChangeListener;
+ private final LongAdder prefixesSentCounter = new LongAdder();
+ private boolean initalState;
+
+ private AdjRibOutListener(final PeerId peerId, final YangInstanceIdentifier ribId, final CodecsRegistry registry,
+ final RIBSupport<?, ?> support, final DataTreeChangeExtension service, final ChannelOutputLimiter session,
+ final boolean mpSupport) {
+ this.session = requireNonNull(session);
+ this.support = requireNonNull(support);
+ codecs = registry.getCodecs(this.support);
+ this.mpSupport = mpSupport;
+ final YangInstanceIdentifier adjRibOutId = ribId.node(PEER_NID).node(IdentifierUtils.domPeerId(peerId))
+ .node(ADJRIBOUT_NID).node(TABLES_NID).node(support.tablesKey());
+ /*
+ * After listener registration should always be executed ODTC. Even when empty table is present
+ * in data store. Within this first ODTC execution we should advertise present routes and than
+ * send EOR marker. initialState flag is distinguishing between first ODTC execution and the rest.
+ */
+ initalState = true;
+ registerDataTreeChangeListener = service.registerTreeChangeListener(
+ DOMDataTreeIdentifier.of(LogicalDatastoreType.OPERATIONAL, adjRibOutId), this);
+ }
- AdjRibOutListener(final RIBSupport ribSupport, final ChannelOutputLimiter session) {
- this.ribSupport = Preconditions.checkNotNull(ribSupport);
- this.session = Preconditions.checkNotNull(session);
+ static AdjRibOutListener create(
+ final @NonNull PeerId peerId,
+ final @NonNull YangInstanceIdentifier ribId,
+ final @NonNull CodecsRegistry registry,
+ final @NonNull RIBSupport<?, ?> support,
+ final @NonNull DataTreeChangeExtension service,
+ final @NonNull ChannelOutputLimiter session,
+ final boolean mpSupport) {
+ return new AdjRibOutListener(peerId, ribId, registry, support, service, session, mpSupport);
}
@Override
- public void onDataTreeChanged(final Collection<DataTreeCandidate> changes) {
- for (DataTreeCandidate tc : changes) {
- final UpdateBuilder ub = new UpdateBuilder();
+ public void onInitialData() {
+ // FIXME: flush initial state
+ }
- // FIXME: fill the structure
+ @Override
+ public void onDataTreeChanged(final List<DataTreeCandidate> changes) {
+ LOG.debug("Data change received for AdjRibOut {}", changes);
+ for (var tc : changes) {
+ LOG.trace("Change {} type {}", tc.getRootNode(), tc.getRootNode().modificationType());
+ for (var child : tc.getRootNode().childNodes()) {
+ for (var route : support.changedRoutes(child)) {
+ processRouteChange(route);
+ }
+ }
+ }
+ if (initalState) {
+ session.write(BgpPeerUtil.createEndOfRib(support.getTablesKey()));
+ initalState = false;
+ }
+ session.flush();
+ }
- session.write(ub.build());
+ private void processRouteChange(final DataTreeCandidateNode route) {
+ final Update update;
+ switch (route.modificationType()) {
+ case UNMODIFIED:
+ LOG.debug("Skipping unmodified route {}", route.name());
+ return;
+ case DELETE:
+ case DISAPPEARED:
+ // FIXME: we can batch deletions into a single batch
+ update = withdraw((MapEntryNode) route.getDataBefore());
+ LOG.debug("Withdrawing routes {}", update);
+ break;
+ case APPEARED:
+ case SUBTREE_MODIFIED:
+ case WRITE:
+ update = advertise((MapEntryNode) route.getDataAfter());
+ LOG.debug("Advertising routes {}", update);
+ break;
+ default:
+ LOG.warn("Ignoring unhandled modification type {}", route.modificationType());
+ return;
}
+ session.write(update);
+ }
- session.flush();
+ private Attributes routeAttributes(final MapEntryNode route) {
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("AdjRibOut parsing route {}", NormalizedNodes.toStringTree(route));
+ }
+ final ContainerNode advertisedAttrs = (ContainerNode) NormalizedNodes.findNode(route,
+ support.routeAttributesIdentifier()).orElse(null);
+ return codecs.deserializeAttributes(advertisedAttrs);
+ }
+
+ private Update withdraw(final MapEntryNode route) {
+ return mpSupport
+ ? support.buildUpdate(Collections.emptyList(), Collections.singleton(route), routeAttributes(route))
+ : buildUpdate(Collections.emptyList(), Collections.singleton(route), routeAttributes(route));
}
+ private Update advertise(final MapEntryNode route) {
+ prefixesSentCounter.increment();
+ return mpSupport
+ ? support.buildUpdate(Collections.singleton(route), Collections.emptyList(), routeAttributes(route))
+ : buildUpdate(Collections.singleton(route), Collections.emptyList(), routeAttributes(route));
+ }
+
+ private static Update buildUpdate(
+ final @NonNull Collection<MapEntryNode> advertised,
+ final @NonNull Collection<MapEntryNode> withdrawn,
+ final @NonNull Attributes attr) {
+ return new UpdateBuilder()
+ .setWithdrawnRoutes(withdrawn.stream()
+ .map(ipv4Route -> new WithdrawnRoutesBuilder()
+ .setPrefix(extractPrefix(ipv4Route))
+ .setPathId(extractPathId(ipv4Route))
+ .build())
+ .collect(Collectors.toList()))
+ .setNlri(advertised.stream()
+ .map(ipv4Route -> new NlriBuilder()
+ .setPrefix(extractPrefix(ipv4Route))
+ .setPathId(extractPathId(ipv4Route)).build())
+ .collect(Collectors.toList()))
+ .setAttributes(attr).build();
+ }
+
+ private static Ipv4Prefix extractPrefix(final MapEntryNode ipv4Route) {
+ return new Ipv4Prefix((String) ipv4Route.getChildByArg(ROUTE_KEY_PREFIX_LEAF).body());
+ }
+
+ private static PathId extractPathId(final MapEntryNode ipv4Route) {
+ final var pathId = ipv4Route.childByArg(ROUTE_KEY_PATHID_LEAF);
+ return pathId == null ? null : new PathId((Uint32) pathId.body());
+ }
+
+ public void close() {
+ registerDataTreeChangeListener.close();
+ }
+
+ boolean isMpSupported() {
+ return mpSupport;
+ }
+
+ @Override
+ public long getPrefixesSentCount() {
+ return prefixesSentCounter.longValue();
+ }
}
Code Review / bgpcep.git / blobdiff