Implement kubevirt router store, manager and codec with unit tests
Change-Id: Ib93a71326aa35b4817f0e6b6c97d5f57b26fe470
diff --git a/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/impl/DistributedKubevirtRouterStore.java b/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/impl/DistributedKubevirtRouterStore.java
new file mode 100644
index 0000000..537d91c
--- /dev/null
+++ b/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/impl/DistributedKubevirtRouterStore.java
@@ -0,0 +1,183 @@
+/*
+ * Copyright 2021-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.kubevirtnetworking.impl;
+
+import com.google.common.collect.ImmutableSet;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.kubevirtnetworking.api.DefaultKubevirtRouter;
+import org.onosproject.kubevirtnetworking.api.KubevirtPeerRouter;
+import org.onosproject.kubevirtnetworking.api.KubevirtRouter;
+import org.onosproject.kubevirtnetworking.api.KubevirtRouterEvent;
+import org.onosproject.kubevirtnetworking.api.KubevirtRouterStore;
+import org.onosproject.kubevirtnetworking.api.KubevirtRouterStoreDelegate;
+import org.onosproject.store.AbstractStore;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+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 org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.onosproject.kubevirtnetworking.api.KubevirtRouterEvent.Type.KUBEVIRT_ROUTER_CREATED;
+import static org.onosproject.kubevirtnetworking.api.KubevirtRouterEvent.Type.KUBEVIRT_ROUTER_REMOVED;
+import static org.onosproject.kubevirtnetworking.api.KubevirtRouterEvent.Type.KUBEVIRT_ROUTER_UPDATED;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Implementation of kubevirt router store using consistent map.
+ */
+@Component(immediate = true, service = KubevirtRouterStore.class)
+public class DistributedKubevirtRouterStore
+ extends AbstractStore<KubevirtRouterEvent, KubevirtRouterStoreDelegate>
+ implements KubevirtRouterStore {
+
+ private final Logger log = getLogger(getClass());
+
+ private static final String ERR_NOT_FOUND = " does not exist";
+ private static final String ERR_DUPLICATE = " already exists";
+ private static final String APP_ID = "org.onosproject.kubevirtnetwork";
+
+ private static final KryoNamespace
+ SERIALIZER_KUBEVIRT_ROUTER = KryoNamespace.newBuilder()
+ .register(KryoNamespaces.API)
+ .register(KubevirtRouter.class)
+ .register(DefaultKubevirtRouter.class)
+ .register(KubevirtPeerRouter.class)
+ .register(Collection.class)
+ .build();
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected StorageService storageService;
+
+ private final ExecutorService eventExecutor = newSingleThreadExecutor(
+ groupedThreads(this.getClass().getSimpleName(), "event-handler", log));
+
+ private final MapEventListener<String, KubevirtRouter> routerMapListener =
+ new KubevirtRouterMapListener();
+
+ private ConsistentMap<String, KubevirtRouter> routerStore;
+
+ @Activate
+ protected void activate() {
+ ApplicationId appId = coreService.registerApplication(APP_ID);
+ routerStore = storageService.<String, KubevirtRouter>consistentMapBuilder()
+ .withSerializer(Serializer.using(SERIALIZER_KUBEVIRT_ROUTER))
+ .withName("kubevirt-routerstore")
+ .withApplicationId(appId)
+ .build();
+ routerStore.addListener(routerMapListener);
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ routerStore.removeListener(routerMapListener);
+ eventExecutor.shutdown();
+ log.info("Stopped");
+ }
+
+ @Override
+ public void createRouter(KubevirtRouter router) {
+ routerStore.compute(router.name(), (name, existing) -> {
+ final String error = router.name() + ERR_DUPLICATE;
+ checkArgument(existing == null, error);
+ return router;
+ });
+ }
+
+ @Override
+ public void updateRouter(KubevirtRouter router) {
+ routerStore.compute(router.name(), (name, existing) -> {
+ final String error = router.name() + ERR_NOT_FOUND;
+ checkArgument(existing != null, error);
+ return router;
+ });
+ }
+
+ @Override
+ public KubevirtRouter removeRouter(String name) {
+ Versioned<KubevirtRouter> router = routerStore.remove(name);
+ if (router == null) {
+ final String error = name + ERR_NOT_FOUND;
+ throw new IllegalArgumentException(error);
+ }
+ return router.value();
+ }
+
+ @Override
+ public KubevirtRouter router(String name) {
+ return routerStore.asJavaMap().get(name);
+ }
+
+ @Override
+ public Set<KubevirtRouter> routers() {
+ return ImmutableSet.copyOf(routerStore.asJavaMap().values());
+ }
+
+ @Override
+ public void clear() {
+ routerStore.clear();
+ }
+
+ private class KubevirtRouterMapListener implements MapEventListener<String, KubevirtRouter> {
+
+ @Override
+ public void event(MapEvent<String, KubevirtRouter> event) {
+ switch (event.type()) {
+ case INSERT:
+ log.debug("Kubevirt router created");
+ eventExecutor.execute(() ->
+ notifyDelegate(new KubevirtRouterEvent(
+ KUBEVIRT_ROUTER_CREATED, event.newValue().value())));
+ break;
+ case UPDATE:
+ log.debug("Kubevirt router updated");
+ eventExecutor.execute(() ->
+ notifyDelegate(new KubevirtRouterEvent(
+ KUBEVIRT_ROUTER_UPDATED, event.newValue().value())));
+ break;
+ case REMOVE:
+ log.debug("Kubevirt router removed");
+ eventExecutor.execute(() ->
+ notifyDelegate(new KubevirtRouterEvent(
+ KUBEVIRT_ROUTER_REMOVED, event.oldValue().value())));
+ break;
+ default:
+ // do nothing
+ break;
+ }
+ }
+ }
+}