Adding route subsystem code to support EVPN
Change-Id: I5d9715af8e2a9474892267c97cd4763f12be4816
diff --git a/incubator/store/src/main/java/org/onosproject/incubator/store/routing/impl/EvpnRouteTable.java b/incubator/store/src/main/java/org/onosproject/incubator/store/routing/impl/EvpnRouteTable.java
new file mode 100755
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--- /dev/null
+++ b/incubator/store/src/main/java/org/onosproject/incubator/store/routing/impl/EvpnRouteTable.java
@@ -0,0 +1,233 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.store.routing.impl;
+
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.IpPrefix;
+import org.onlab.packet.MacAddress;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.incubator.net.routing.EvpnInternalRouteEvent;
+import org.onosproject.incubator.net.routing.EvpnPrefix;
+import org.onosproject.incubator.net.routing.EvpnRoute;
+import org.onosproject.incubator.net.routing.EvpnRouteSet;
+import org.onosproject.incubator.net.routing.EvpnRouteStoreDelegate;
+import org.onosproject.incubator.net.routing.EvpnTable;
+import org.onosproject.incubator.net.routing.Label;
+import org.onosproject.incubator.net.routing.Route;
+import org.onosproject.incubator.net.routing.RouteDistinguisher;
+import org.onosproject.incubator.net.routing.RouteTableId;
+import org.onosproject.incubator.net.routing.VpnRouteTarget;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.DistributedPrimitive;
+import org.onosproject.store.service.MapEvent;
+import org.onosproject.store.service.MapEventListener;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.Versioned;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.function.Consumer;
+import java.util.stream.Collectors;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Default implementation of a route table based on a consistent map.
+ */
+public class EvpnRouteTable implements EvpnTable {
+
+ private final RouteTableId id;
+ private final ConsistentMap<EvpnPrefix, Set<EvpnRoute>> routes;
+ private final EvpnRouteStoreDelegate delegate;
+ private final ExecutorService executor;
+ private final RouteTableListener listener = new RouteTableListener();
+
+ private final Consumer<DistributedPrimitive.Status> statusChangeListener;
+
+ /**
+ * Creates a new route table.
+ *
+ * @param id route table ID
+ * @param delegate route store delegate to notify of events
+ * @param storageService storage service
+ * @param executor executor service
+ */
+ public EvpnRouteTable(RouteTableId id, EvpnRouteStoreDelegate delegate,
+ StorageService storageService, ExecutorService executor) {
+ this.delegate = checkNotNull(delegate);
+ this.id = checkNotNull(id);
+ this.routes = buildRouteMap(checkNotNull(storageService));
+ this.executor = checkNotNull(executor);
+
+ statusChangeListener = status -> {
+ if (status.equals(DistributedPrimitive.Status.ACTIVE)) {
+ executor.execute(this::notifyExistingRoutes);
+ }
+ };
+ routes.addStatusChangeListener(statusChangeListener);
+
+ notifyExistingRoutes();
+
+ routes.addListener(listener);
+ }
+
+ private void notifyExistingRoutes() {
+ routes.entrySet().stream()
+ .map(e -> new EvpnInternalRouteEvent(
+ EvpnInternalRouteEvent.Type.ROUTE_ADDED,
+ new EvpnRouteSet(id, e.getKey(), e.getValue().value())))
+ .forEach(delegate::notify);
+ }
+
+ private ConsistentMap<EvpnPrefix, Set<EvpnRoute>> buildRouteMap(StorageService
+ storageService) {
+ KryoNamespace routeTableSerializer = KryoNamespace.newBuilder()
+ .register(KryoNamespaces.API)
+ .register(KryoNamespaces.MISC)
+ .register(Route.class)
+ .register(Route.Source.class)
+ .register(EvpnRoute.class)
+ .register(EvpnPrefix.class)
+ .register(RouteDistinguisher.class)
+ .register(MacAddress.class)
+ .register(IpPrefix.class)
+ .register(EvpnRoute.Source.class)
+ .register(IpAddress.class)
+ .register(VpnRouteTarget.class)
+ .register(Label.class)
+ .register(RouteTableId.class)
+ .build();
+ return storageService.<EvpnPrefix, Set<EvpnRoute>>consistentMapBuilder()
+ .withName("onos-evpn-routes-" + id.name())
+ .withRelaxedReadConsistency()
+ .withSerializer(Serializer.using(routeTableSerializer))
+ .build();
+ }
+
+ @Override
+ public RouteTableId id() {
+ return id;
+ }
+
+ @Override
+ public void shutdown() {
+ routes.removeStatusChangeListener(statusChangeListener);
+ routes.removeListener(listener);
+ }
+
+ @Override
+ public void destroy() {
+ shutdown();
+ routes.destroy();
+ }
+
+ @Override
+ public void update(EvpnRoute route) {
+ routes.compute(route.evpnPrefix(), (prefix, set) -> {
+ if (set == null) {
+ set = new HashSet<>();
+ }
+ set.add(route);
+ return set;
+ });
+ }
+
+ @Override
+ public void remove(EvpnRoute route) {
+ routes.compute(route.evpnPrefix(), (prefix, set) -> {
+ if (set != null) {
+ set.remove(route);
+ if (set.isEmpty()) {
+ return null;
+ }
+ return set;
+ }
+ return null;
+ });
+ }
+
+ @Override
+ public Collection<EvpnRouteSet> getRoutes() {
+ return routes.entrySet().stream()
+ .map(e -> new EvpnRouteSet(id, e.getKey(), e.getValue().value()))
+ .collect(Collectors.toSet());
+ }
+
+ @Override
+ public EvpnRouteSet getRoutes(EvpnPrefix prefix) {
+ Versioned<Set<EvpnRoute>> routeSet = routes.get(prefix);
+
+ if (routeSet != null) {
+ return new EvpnRouteSet(id, prefix, routeSet.value());
+ }
+ return null;
+ }
+
+ @Override
+ public Collection<EvpnRoute> getRoutesForNextHop(IpAddress nextHop) {
+ // TODO index
+ return routes.values().stream()
+ .flatMap(v -> v.value().stream())
+ .filter(r -> r.nextHop().equals(nextHop))
+ .collect(Collectors.toSet());
+ }
+
+ private class RouteTableListener
+ implements MapEventListener<EvpnPrefix, Set<EvpnRoute>> {
+
+ private EvpnInternalRouteEvent createRouteEvent(
+ EvpnInternalRouteEvent.Type type, MapEvent<EvpnPrefix, Set<EvpnRoute>>
+ event) {
+ Set<EvpnRoute> currentRoutes =
+ (event.newValue() == null) ? Collections.emptySet() : event.newValue().value();
+ return new EvpnInternalRouteEvent(type, new EvpnRouteSet(id, event
+ .key(), currentRoutes));
+ }
+
+ @Override
+ public void event(MapEvent<EvpnPrefix, Set<EvpnRoute>> event) {
+ EvpnInternalRouteEvent ire = null;
+ switch (event.type()) {
+ case INSERT:
+ ire = createRouteEvent(EvpnInternalRouteEvent.Type.ROUTE_ADDED, event);
+ break;
+ case UPDATE:
+ if (event.newValue().value().size() > event.oldValue().value().size()) {
+ ire = createRouteEvent(EvpnInternalRouteEvent.Type.ROUTE_ADDED, event);
+ } else {
+ ire = createRouteEvent(EvpnInternalRouteEvent.Type.ROUTE_REMOVED, event);
+ }
+ break;
+ case REMOVE:
+ ire = createRouteEvent(EvpnInternalRouteEvent.Type.ROUTE_REMOVED, event);
+ break;
+ default:
+ break;
+ }
+ if (ire != null) {
+ delegate.notify(ire);
+ }
+ }
+ }
+
+}
+