Moving Multicast subsystem into app and refactoring APIs to support multihomed sources and sinks
Change-Id: I95d07b163c619b018ff106159b134ff214aa2ffd
diff --git a/apps/mcast/impl/src/main/java/org/onosproject/mcast/impl/MulticastRouteManager.java b/apps/mcast/impl/src/main/java/org/onosproject/mcast/impl/MulticastRouteManager.java
new file mode 100644
index 0000000..6ed8b4b
--- /dev/null
+++ b/apps/mcast/impl/src/main/java/org/onosproject/mcast/impl/MulticastRouteManager.java
@@ -0,0 +1,284 @@
+/*
+ * Copyright 2015-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.mcast.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.onosproject.event.AbstractListenerManager;
+import org.onosproject.mcast.api.McastEvent;
+import org.onosproject.mcast.api.McastListener;
+import org.onosproject.mcast.api.McastRoute;
+import org.onosproject.mcast.api.McastRouteData;
+import org.onosproject.mcast.api.McastStore;
+import org.onosproject.mcast.api.McastStoreDelegate;
+import org.onosproject.mcast.api.MulticastRouteService;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.Host;
+import org.onosproject.net.HostId;
+import org.onosproject.net.host.HostEvent;
+import org.onosproject.net.host.HostListener;
+import org.onosproject.net.host.HostService;
+import org.slf4j.Logger;
+
+import java.util.HashSet;
+import java.util.Optional;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * An implementation of a multicast route table.
+ */
+@Component(immediate = true)
+@Service
+public class MulticastRouteManager
+ extends AbstractListenerManager<McastEvent, McastListener>
+ implements MulticastRouteService {
+ //TODO: add MulticastRouteAdminService
+
+ private Logger log = getLogger(getClass());
+
+ private final McastStoreDelegate delegate = new InternalMcastStoreDelegate();
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected McastStore store;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected HostService hostService;
+
+ private HostListener hostListener = new InternalHostListener();
+
+ @Activate
+ public void activate() {
+ hostService.addListener(hostListener);
+ eventDispatcher.addSink(McastEvent.class, listenerRegistry);
+ store.setDelegate(delegate);
+ log.info("Started");
+ }
+
+ @Deactivate
+ public void deactivate() {
+ hostService.removeListener(hostListener);
+ store.unsetDelegate(delegate);
+ eventDispatcher.removeSink(McastEvent.class);
+ log.info("Stopped");
+ }
+
+ @Override
+ public void add(McastRoute route) {
+ checkNotNull(route, "Route cannot be null");
+ store.storeRoute(route);
+ }
+
+ @Override
+ public void remove(McastRoute route) {
+ checkNotNull(route, "Route cannot be null");
+ if (checkRoute(route)) {
+ store.removeRoute(route);
+ }
+ }
+
+ @Override
+ public Set<McastRoute> getRoutes() {
+ return store.getRoutes();
+ }
+
+ @Override
+ public Optional<McastRoute> getRoute(IpAddress groupIp, IpAddress sourceIp) {
+ return store.getRoutes().stream().filter(route ->
+ route.group().equals(groupIp) &&
+ route.source().isPresent() &&
+ route.source().get().equals(sourceIp)).findAny();
+ }
+
+ @Override
+ public void addSources(McastRoute route, Set<ConnectPoint> connectPoints) {
+ checkNotNull(route, "Route cannot be null");
+ checkNotNull(connectPoints, "Source cannot be null");
+ if (checkRoute(route)) {
+ store.storeSources(route, connectPoints);
+ }
+ }
+
+ @Override
+ public void removeSources(McastRoute route) {
+ checkNotNull(route, "Route cannot be null");
+ if (checkRoute(route)) {
+ store.removeSources(route);
+ }
+ }
+
+ @Override
+ public void removeSources(McastRoute route, Set<ConnectPoint> sources) {
+ checkNotNull(route, "Route cannot be null");
+ checkNotNull(sources, "Source cannot be null");
+ if (checkRoute(route)) {
+ store.removeSources(route, sources);
+ }
+ }
+
+ @Override
+ public void addSink(McastRoute route, HostId hostId) {
+ if (checkRoute(route)) {
+ Set<ConnectPoint> sinks = new HashSet<>();
+ Host host = hostService.getHost(hostId);
+ if (host != null) {
+ host.locations().forEach(hostLocation -> sinks.add(
+ ConnectPoint.deviceConnectPoint(hostLocation.deviceId() + "/" + hostLocation.port())));
+ }
+ store.addSink(route, hostId, sinks);
+ }
+
+ }
+
+ @Override
+ public void addSink(McastRoute route, Set<ConnectPoint> sinks) {
+ checkNotNull(route, "Route cannot be null");
+ checkNotNull(sinks, "Sinks cannot be null");
+ if (checkRoute(route)) {
+ store.addSinks(route, sinks);
+ }
+ }
+
+ @Override
+ public void removeSinks(McastRoute route) {
+ checkNotNull(route, "Route cannot be null");
+ if (checkRoute(route)) {
+ store.removeSinks(route);
+ }
+ }
+
+ @Override
+ public void removeSink(McastRoute route, HostId hostId) {
+ checkNotNull(route, "Route cannot be null");
+ checkNotNull(hostId, "Host cannot be null");
+ if (checkRoute(route)) {
+ store.removeSink(route, hostId);
+ }
+ }
+
+ @Override
+ public void removeSinks(McastRoute route, HostId hostId, Set<ConnectPoint> connectPoints) {
+ checkNotNull(route, "Route cannot be null");
+ if (checkRoute(route)) {
+ store.removeSinks(route, hostId, connectPoints);
+ }
+
+ }
+
+ @Override
+ public void removeSinks(McastRoute route, Set<ConnectPoint> connectPoints) {
+ checkNotNull(route, "Route cannot be null");
+ if (checkRoute(route)) {
+ store.removeSinks(route, HostId.NONE, connectPoints);
+ }
+ }
+
+ @Override
+ public McastRouteData routeData(McastRoute route) {
+ checkNotNull(route, "Route cannot be null");
+ return checkRoute(route) ? store.getRouteData(route) : null;
+ }
+
+ @Override
+ public Set<ConnectPoint> sources(McastRoute route) {
+ checkNotNull(route, "Route cannot be null");
+ return checkRoute(route) ? store.sourcesFor(route) : ImmutableSet.of();
+ }
+
+ @Override
+ public Set<ConnectPoint> sinks(McastRoute route) {
+ checkNotNull(route, "Route cannot be null");
+ return checkRoute(route) ? store.sinksFor(route) : ImmutableSet.of();
+ }
+
+ @Override
+ public Set<ConnectPoint> sinks(McastRoute route, HostId hostId) {
+ checkNotNull(route, "Route cannot be null");
+ return checkRoute(route) ? store.sinksFor(route, hostId) : ImmutableSet.of();
+ }
+
+ @Override
+ public Set<ConnectPoint> nonHostSinks(McastRoute route) {
+ checkNotNull(route, "Route cannot be null");
+ return checkRoute(route) ? store.sinksFor(route, HostId.NONE) : ImmutableSet.of();
+ }
+
+ private class InternalMcastStoreDelegate implements McastStoreDelegate {
+ @Override
+ public void notify(McastEvent event) {
+ log.debug("Event: {}", event);
+ post(event);
+ }
+ }
+
+ private boolean checkRoute(McastRoute route) {
+ if (store.getRoutes().contains(route)) {
+ return true;
+ } else {
+ log.warn("Route {} is not present in the store, please add it", route);
+ }
+ return false;
+ }
+
+ private class InternalHostListener implements HostListener {
+
+ @Override
+ public void event(HostEvent event) {
+ HostId hostId = event.subject().id();
+ Set<ConnectPoint> sinks = new HashSet<>();
+ log.debug("{} event", event);
+ //FIXME ther must be a better way
+ event.subject().locations().forEach(hostLocation -> sinks.add(
+ ConnectPoint.deviceConnectPoint(hostLocation.deviceId() + "/" + hostLocation.port())));
+ switch (event.type()) {
+ case HOST_ADDED:
+ case HOST_UPDATED:
+ case HOST_MOVED:
+ if ((event.prevSubject() == null && event.subject() != null)
+ || (event.prevSubject().locations().size() > event.subject().locations().size())) {
+ store.getRoutes().stream().filter(mcastRoute -> {
+ return store.getRouteData(mcastRoute).sinks().get(hostId) != null;
+ }).forEach(route -> {
+ store.removeSinks(route, hostId, sinks);
+ });
+ } else if (event.prevSubject().locations().size() < event.subject().locations().size()) {
+ store.getRoutes().stream().filter(mcastRoute -> {
+ return store.getRouteData(mcastRoute).sinks().get(hostId) != null;
+ }).forEach(route -> {
+ store.addSink(route, hostId, sinks);
+ });
+ }
+ break;
+ case HOST_REMOVED:
+ store.getRoutes().stream().filter(mcastRoute -> {
+ return store.getRouteData(mcastRoute).sinks().get(hostId) != null;
+ }).forEach(route -> {
+ store.removeSink(route, hostId);
+ });
+ default:
+ log.debug("Host event {} not supported", event.type());
+ }
+ }
+ }
+}