| /* |
| * Copyright 2016-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.routeservice.store; |
| |
| import com.google.common.collect.ImmutableSet; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.util.KryoNamespace; |
| import org.onosproject.routeservice.InternalRouteEvent; |
| import org.onosproject.routeservice.Route; |
| import org.onosproject.routeservice.RouteSet; |
| import org.onosproject.routeservice.RouteStore; |
| import org.onosproject.routeservice.RouteStoreDelegate; |
| import org.onosproject.routeservice.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. |
| */ |
| public class DistributedRouteStore extends AbstractStore<InternalRouteEvent, RouteStoreDelegate> |
| implements RouteStore { |
| |
| protected StorageService storageService; |
| |
| private static final RouteTableId IPV4 = new RouteTableId("ipv4"); |
| private static final RouteTableId IPV6 = new RouteTableId("ipv6"); |
| private static final Logger log = LoggerFactory.getLogger(DistributedRouteStore.class); |
| private final SetEventListener<RouteTableId> masterRouteTableListener = |
| new MasterRouteTableListener(); |
| private final RouteStoreDelegate ourDelegate = new InternalRouteStoreDelegate(); |
| |
| // Stores the route tables that have been created |
| private DistributedSet<RouteTableId> masterRouteTable; |
| // Local memory map to store route table object |
| private Map<RouteTableId, RouteTable> routeTables; |
| |
| private ExecutorService executor; |
| |
| public DistributedRouteStore(StorageService storageService) { |
| this.storageService = storageService; |
| } |
| |
| /** |
| * Sets up distributed route store. |
| */ |
| 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.addListener(masterRouteTableListener); |
| |
| // Add default tables (add is idempotent) |
| masterRouteTable.add(IPV4); |
| masterRouteTable.add(IPV6); |
| |
| masterRouteTable.forEach(this::createRouteTable); |
| |
| log.info("Started"); |
| } |
| |
| /** |
| * Cleans up distributed route store. |
| */ |
| public void deactivate() { |
| masterRouteTable.removeListener(masterRouteTableListener); |
| |
| routeTables.values().forEach(RouteTable::shutdown); |
| |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void updateRoute(Route route) { |
| getDefaultRouteTable(route).update(route); |
| } |
| |
| @Override |
| public void removeRoute(Route route) { |
| getDefaultRouteTable(route).remove(route); |
| } |
| |
| @Override |
| public void replaceRoute(Route route) { |
| getDefaultRouteTable(route).replace(route); |
| } |
| |
| @Override |
| public Set<RouteTableId> getRouteTables() { |
| return ImmutableSet.copyOf(masterRouteTable); |
| } |
| |
| @Override |
| public Collection<RouteSet> getRoutes(RouteTableId table) { |
| RouteTable routeTable = routeTables.get(table); |
| if (routeTable == null) { |
| return Collections.emptySet(); |
| } else { |
| return ImmutableSet.copyOf(routeTable.getRoutes()); |
| } |
| } |
| |
| @Override |
| public Collection<Route> getRoutesForNextHop(IpAddress ip) { |
| return getDefaultRouteTable(ip).getRoutesForNextHop(ip); |
| } |
| |
| @Override |
| public RouteSet getRoutes(IpPrefix prefix) { |
| return getDefaultRouteTable(prefix.address()).getRoutes(prefix); |
| } |
| |
| private void createRouteTable(RouteTableId tableId) { |
| routeTables.computeIfAbsent(tableId, id -> new DefaultRouteTable(id, ourDelegate, storageService, executor)); |
| } |
| |
| private void destroyRouteTable(RouteTableId tableId) { |
| RouteTable table = routeTables.remove(tableId); |
| if (table != null) { |
| table.destroy(); |
| } |
| } |
| |
| private RouteTable getDefaultRouteTable(Route route) { |
| return getDefaultRouteTable(route.prefix().address()); |
| } |
| |
| private RouteTable getDefaultRouteTable(IpAddress ip) { |
| RouteTableId routeTableId = (ip.isIp4()) ? IPV4 : IPV6; |
| return routeTables.getOrDefault(routeTableId, EmptyRouteTable.instance()); |
| } |
| |
| private class InternalRouteStoreDelegate implements RouteStoreDelegate { |
| @Override |
| public void notify(InternalRouteEvent event) { |
| executor.execute(() -> DistributedRouteStore.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; |
| } |
| } |
| } |
| } |