Add kubevirt API config service, expose it via REST API and CLI
Change-Id: I45a867ad54622656475758e7b4af38c19e551790
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DistributedKubevirtApiConfigStore.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DistributedKubevirtApiConfigStore.java
new file mode 100644
index 0000000..991b52a
--- /dev/null
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DistributedKubevirtApiConfigStore.java
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2020-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.kubevirtnode.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.kubevirtnode.api.DefaultKubevirtApiConfig;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfig;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigEvent;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigStore;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigStoreDelegate;
+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.kubevirtnode.api.KubevirtApiConfigEvent.Type.KUBEVIRT_API_CONFIG_CREATED;
+import static org.onosproject.kubevirtnode.api.KubevirtApiConfigEvent.Type.KUBEVIRT_API_CONFIG_REMOVED;
+import static org.onosproject.kubevirtnode.api.KubevirtApiConfigEvent.Type.KUBEVIRT_API_CONFIG_UPDATED;
+import static org.onosproject.kubevirtnode.util.KubevirtNodeUtil.endpoint;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Implementation of KubeVirt API config store using consistent map.
+ */
+@Component(immediate = true, service = KubevirtApiConfigStore.class)
+public class DistributedKubevirtApiConfigStore
+ extends AbstractStore<KubevirtApiConfigEvent, KubevirtApiConfigStoreDelegate>
+ implements KubevirtApiConfigStore {
+
+ 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.kubevirtnode";
+
+ private static final KryoNamespace
+ SERIALIZER_KUBEVIRT_API_CONFIG = KryoNamespace.newBuilder()
+ .register(KryoNamespaces.API)
+ .register(KubevirtApiConfig.class)
+ .register(DefaultKubevirtApiConfig.class)
+ .register(KubevirtApiConfig.Scheme.class)
+ .register(KubevirtApiConfig.State.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, KubevirtApiConfig> apiConfigMapListener =
+ new KubevirtApiConfigMapListener();
+ private ConsistentMap<String, KubevirtApiConfig> apiConfigStore;
+
+ @Activate
+ protected void activate() {
+ ApplicationId appId = coreService.registerApplication(APP_ID);
+ apiConfigStore = storageService.<String, KubevirtApiConfig>consistentMapBuilder()
+ .withSerializer(Serializer.using(SERIALIZER_KUBEVIRT_API_CONFIG))
+ .withName("k8s-apiconfig-store")
+ .withApplicationId(appId)
+ .build();
+ apiConfigStore.addListener(apiConfigMapListener);
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ apiConfigStore.removeListener(apiConfigMapListener);
+ eventExecutor.shutdown();
+ log.info("Stopped");
+ }
+
+ @Override
+ public void createApiConfig(KubevirtApiConfig config) {
+ String key = endpoint(config);
+ apiConfigStore.compute(key, (endpoint, existing) -> {
+ final String error = key + ERR_DUPLICATE;
+ checkArgument(existing == null, error);
+ return config;
+ });
+ }
+
+ @Override
+ public void updateApiConfig(KubevirtApiConfig config) {
+ String key = endpoint(config);
+ apiConfigStore.compute(key, (endpoint, existing) -> {
+ final String error = key + ERR_NOT_FOUND;
+ checkArgument(existing != null, error);
+ return config;
+ });
+ }
+
+ @Override
+ public KubevirtApiConfig removeApiConfig(String endpoint) {
+ Versioned<KubevirtApiConfig> apiConfig = apiConfigStore.remove(endpoint);
+ if (apiConfig == null) {
+ final String error = endpoint + ERR_NOT_FOUND;
+ throw new IllegalArgumentException(error);
+ }
+ return apiConfig.value();
+ }
+
+ @Override
+ public Set<KubevirtApiConfig> apiConfigs() {
+ return ImmutableSet.copyOf(apiConfigStore.asJavaMap().values());
+ }
+
+ @Override
+ public KubevirtApiConfig apiConfig(String endpoint) {
+ return apiConfigStore.asJavaMap().get(endpoint);
+ }
+
+ private class KubevirtApiConfigMapListener
+ implements MapEventListener<String, KubevirtApiConfig> {
+
+ @Override
+ public void event(MapEvent<String, KubevirtApiConfig> event) {
+ switch (event.type()) {
+ case INSERT:
+ log.debug("Kubevirt API config created {}", event.newValue());
+ eventExecutor.execute(() ->
+ notifyDelegate(new KubevirtApiConfigEvent(
+ KUBEVIRT_API_CONFIG_CREATED, event.newValue().value()
+ )));
+ break;
+ case UPDATE:
+ log.debug("Kubevirt API config updated {}", event.newValue());
+ eventExecutor.execute(() ->
+ notifyDelegate(new KubevirtApiConfigEvent(
+ KUBEVIRT_API_CONFIG_UPDATED, event.newValue().value()
+ )));
+ break;
+ case REMOVE:
+ log.debug("Kubevirt API config removed {}", event.oldValue());
+ eventExecutor.execute(() ->
+ notifyDelegate(new KubevirtApiConfigEvent(
+ KUBEVIRT_API_CONFIG_REMOVED, event.oldValue().value()
+ )));
+ break;
+ default:
+ // do nothing
+ break;
+ }
+ }
+ }
+}
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtApiConfigManager.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtApiConfigManager.java
new file mode 100644
index 0000000..06e2ccf
--- /dev/null
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtApiConfigManager.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2020-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.kubevirtnode.impl;
+
+/**
+ * Service administering the inventory of KubeVirt API configs.
+ */
+
+import com.google.common.base.Strings;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.cluster.LeadershipService;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.event.ListenerRegistry;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfig;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigAdminService;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigEvent;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigListener;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigService;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigStore;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigStoreDelegate;
+import org.onosproject.store.service.StorageService;
+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.concurrent.ExecutorService;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.onosproject.kubevirtnode.util.KubevirtNodeUtil.endpoint;
+import static org.slf4j.LoggerFactory.getLogger;
+
+@Component(
+ immediate = true,
+ service = {KubevirtApiConfigService.class, KubevirtApiConfigAdminService.class }
+)
+public class KubevirtApiConfigManager
+ extends ListenerRegistry<KubevirtApiConfigEvent, KubevirtApiConfigListener>
+ implements KubevirtApiConfigService, KubevirtApiConfigAdminService {
+
+ private final Logger log = getLogger(getClass());
+
+ private static final String MSG_CONFIG = "KubeVirt API config %s %s";
+ private static final String MSG_CREATED = "created";
+ private static final String MSG_UPDATED = "updated";
+ private static final String MSG_REMOVED = "removed";
+
+ private static final String ERR_NULL_CONFIG = "KubeVirt API config cannot be null";
+ private static final String ERR_NULL_ENDPOINT = "KubeVirt API endpoint cannot be null";
+ private static final String ERR_UNIQUE_CONFIG = "KubeVirt API config should be unique";
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected ClusterService clusterService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected LeadershipService leadershipService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected StorageService storageService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected KubevirtApiConfigStore configStore;
+
+ private final ExecutorService eventExecutor = newSingleThreadExecutor(
+ groupedThreads(this.getClass().getSimpleName(), "event-handler", log));
+
+ private final KubevirtApiConfigStoreDelegate delegate = new InternalApiConfigStoreDelegate();
+
+ private ApplicationId appId;
+
+ @Activate
+ protected void activate() {
+ appId = coreService.registerApplication(APP_ID);
+ configStore.setDelegate(delegate);
+
+ leadershipService.runForLeadership(appId.name());
+
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ configStore.unsetDelegate(delegate);
+
+ leadershipService.withdraw(appId.name());
+ eventExecutor.shutdown();
+
+ log.info("Stopped");
+ }
+
+ @Override
+ public void createApiConfig(KubevirtApiConfig config) {
+ checkNotNull(config, ERR_NULL_CONFIG);
+ checkArgument(configStore.apiConfigs().size() == 0, ERR_UNIQUE_CONFIG);
+
+ configStore.createApiConfig(config);
+ log.info(String.format(MSG_CONFIG, endpoint(config), MSG_CREATED));
+ }
+
+ @Override
+ public void updateApiConfig(KubevirtApiConfig config) {
+ checkNotNull(config, ERR_NULL_CONFIG);
+ configStore.updateApiConfig(config);
+ log.info(String.format(MSG_CONFIG, endpoint(config), MSG_UPDATED));
+ }
+
+ @Override
+ public KubevirtApiConfig removeApiConfig(String endpoint) {
+ checkArgument(!Strings.isNullOrEmpty(endpoint), ERR_NULL_ENDPOINT);
+ KubevirtApiConfig config = configStore.removeApiConfig(endpoint);
+ log.info(String.format(MSG_CONFIG, endpoint, MSG_REMOVED));
+ return config;
+ }
+
+ @Override
+ public KubevirtApiConfig apiConfig() {
+ return configStore.apiConfigs().stream().findAny().orElse(null);
+ }
+
+ private class InternalApiConfigStoreDelegate implements KubevirtApiConfigStoreDelegate {
+
+ @Override
+ public void notify(KubevirtApiConfigEvent event) {
+ if (event != null) {
+ log.trace("send KubeVirt API config event {}", event);
+ process(event);
+ }
+ }
+ }
+}