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/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);
+ }
+ }
+ }
+}