Adding route subsystem code to support EVPN
Change-Id: I5d9715af8e2a9474892267c97cd4763f12be4816
diff --git a/incubator/store/src/main/java/org/onosproject/incubator/store/routing/impl/DistributedEvpnRouteStore.java b/incubator/store/src/main/java/org/onosproject/incubator/store/routing/impl/DistributedEvpnRouteStore.java
new file mode 100755
index 0000000..49356b6
--- /dev/null
+++ b/incubator/store/src/main/java/org/onosproject/incubator/store/routing/impl/DistributedEvpnRouteStore.java
@@ -0,0 +1,203 @@
+/*
+ * 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 com.google.common.collect.ImmutableSet;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onlab.packet.IpAddress;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.incubator.net.routing.EvpnInternalRouteEvent;
+import org.onosproject.incubator.net.routing.EvpnRoute;
+import org.onosproject.incubator.net.routing.EvpnRouteSet;
+import org.onosproject.incubator.net.routing.EvpnRouteStore;
+import org.onosproject.incubator.net.routing.EvpnRouteStoreDelegate;
+import org.onosproject.incubator.net.routing.EvpnTable;
+import org.onosproject.incubator.net.routing.RouteTableId;
+import org.onosproject.store.AbstractStore;
+import org.onosproject.store.service.DistributedSet;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.SetEvent;
+import org.onosproject.store.service.SetEventListener;
+import org.onosproject.store.service.StorageService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import static org.onlab.util.Tools.groupedThreads;
+
+/**
+ * Route store based on distributed storage.
+ */
+@Service
+@Component
+public class DistributedEvpnRouteStore extends
+ AbstractStore<EvpnInternalRouteEvent,
+ EvpnRouteStoreDelegate>
+ implements EvpnRouteStore {
+
+ private static final Logger log = LoggerFactory
+ .getLogger(DistributedEvpnRouteStore.class);
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ public StorageService storageService;
+
+ private static final RouteTableId EVPN_IPV4 = new RouteTableId("evpn_ipv4");
+ private static final RouteTableId EVPN_IPV6 = new RouteTableId("evpn_ipv6");
+
+ private final SetEventListener<RouteTableId> masterRouteTableListener =
+ new MasterRouteTableListener();
+ private final EvpnRouteStoreDelegate ourDelegate = new
+ InternalEvpnRouteStoreDelegate();
+
+ // Stores the route tables that have been created
+ public DistributedSet<RouteTableId> masterRouteTable;
+ // Local memory map to store route table object
+ public Map<RouteTableId, EvpnTable> routeTables;
+
+ private ExecutorService executor;
+
+
+ /**
+ * Sets up distributed route store.
+ */
+ @Activate
+ public void activate() {
+ routeTables = new ConcurrentHashMap<>();
+ executor = Executors.newSingleThreadExecutor(groupedThreads("onos/route", "store", log));
+
+ KryoNamespace masterRouteTableSerializer = KryoNamespace.newBuilder()
+ .register(RouteTableId.class)
+ .build();
+
+ masterRouteTable = storageService.<RouteTableId>setBuilder()
+ .withName("onos-master-route-table")
+ .withSerializer(Serializer.using(masterRouteTableSerializer))
+ .build()
+ .asDistributedSet();
+
+ masterRouteTable.forEach(this::createRouteTable);
+
+ masterRouteTable.addListener(masterRouteTableListener);
+
+ // Add default tables (add is idempotent)
+ masterRouteTable.add(EVPN_IPV4);
+ masterRouteTable.add(EVPN_IPV6);
+
+ log.info("Started");
+ }
+
+ /**
+ * Cleans up distributed route store.
+ */
+ @Deactivate
+ public void deactivate() {
+ masterRouteTable.removeListener(masterRouteTableListener);
+
+ routeTables.values().forEach(EvpnTable::shutdown);
+
+ log.info("Stopped");
+ }
+
+ @Override
+ public void updateRoute(EvpnRoute route) {
+ getDefaultRouteTable(route).update(route);
+ }
+
+ @Override
+ public void removeRoute(EvpnRoute route) {
+ getDefaultRouteTable(route).remove(route);
+ }
+
+ @Override
+ public Set<RouteTableId> getRouteTables() {
+ return ImmutableSet.copyOf(masterRouteTable);
+ }
+
+ @Override
+ public Collection<EvpnRouteSet> getRoutes(RouteTableId table) {
+ EvpnTable routeTable = routeTables.get(table);
+ if (routeTable == null) {
+ return Collections.emptySet();
+ } else {
+ return ImmutableSet.copyOf(routeTable.getRoutes());
+ }
+ }
+
+ @Override
+ public Collection<EvpnRoute> getRoutesForNextHop(IpAddress ip) {
+ return getDefaultRouteTable(ip).getRoutesForNextHop(ip);
+ }
+
+ private void createRouteTable(RouteTableId tableId) {
+ routeTables.computeIfAbsent(tableId, id -> new EvpnRouteTable(id,
+ ourDelegate, storageService, executor));
+ }
+
+ private void destroyRouteTable(RouteTableId tableId) {
+ EvpnTable table = routeTables.remove(tableId);
+ if (table != null) {
+ table.destroy();
+ }
+ }
+
+ private EvpnTable getDefaultRouteTable(EvpnRoute route) {
+ return getDefaultRouteTable(route.prefixIp().address());
+ }
+
+ private EvpnTable getDefaultRouteTable(IpAddress ip) {
+ RouteTableId routeTableId = (ip.isIp4()) ? EVPN_IPV4 : EVPN_IPV6;
+ return routeTables.getOrDefault(routeTableId, EmptyEvpnRouteTable
+ .instance());
+ }
+
+ private class InternalEvpnRouteStoreDelegate implements
+ EvpnRouteStoreDelegate {
+ @Override
+ public void notify(EvpnInternalRouteEvent event) {
+ executor.execute(() -> DistributedEvpnRouteStore
+ .this.notifyDelegate(event));
+ }
+ }
+
+ private class MasterRouteTableListener implements SetEventListener<RouteTableId> {
+ @Override
+ public void event(SetEvent<RouteTableId> event) {
+ switch (event.type()) {
+ case ADD:
+ executor.execute(() -> createRouteTable(event.entry()));
+ break;
+ case REMOVE:
+ executor.execute(() -> destroyRouteTable(event.entry()));
+ break;
+ default:
+ break;
+ }
+ }
+ }
+}