Implement kubevirt node service, expose it through REST API and CLI
Change-Id: Ieebd2652af31344df3a7c91d3669a2ba150cb57f
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtNodeManager.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtNodeManager.java
new file mode 100644
index 0000000..6578def
--- /dev/null
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtNodeManager.java
@@ -0,0 +1,289 @@
+/*
+ * 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 nodes.
+ */
+
+import com.google.common.base.Strings;
+import com.google.common.collect.ImmutableSet;
+import org.onlab.packet.IpAddress;
+import org.onlab.util.Tools;
+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.KubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNodeAdminService;
+import org.onosproject.kubevirtnode.api.KubevirtNodeEvent;
+import org.onosproject.kubevirtnode.api.KubevirtNodeListener;
+import org.onosproject.kubevirtnode.api.KubevirtNodeService;
+import org.onosproject.kubevirtnode.api.KubevirtNodeState;
+import org.onosproject.kubevirtnode.api.KubevirtNodeStore;
+import org.onosproject.kubevirtnode.api.KubevirtNodeStoreDelegate;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.ovsdb.controller.OvsdbController;
+import org.onosproject.store.service.AtomicCounter;
+import org.onosproject.store.service.StorageService;
+import org.osgi.service.component.ComponentContext;
+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.Modified;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Dictionary;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.stream.Collectors;
+
+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.impl.OsgiPropertyConstants.OVSDB_PORT;
+import static org.onosproject.kubevirtnode.impl.OsgiPropertyConstants.OVSDB_PORT_NUM_DEFAULT;
+import static org.onosproject.kubevirtnode.util.KubevirtNodeUtil.genDpid;
+import static org.slf4j.LoggerFactory.getLogger;
+
+@Component(
+ immediate = true,
+ service = {KubevirtNodeService.class, KubevirtNodeAdminService.class},
+ property = {
+ OVSDB_PORT + ":Integer=" + OVSDB_PORT_NUM_DEFAULT
+ }
+)
+public class KubevirtNodeManager
+ extends ListenerRegistry<KubevirtNodeEvent, KubevirtNodeListener>
+ implements KubevirtNodeService, KubevirtNodeAdminService {
+
+ private final Logger log = getLogger(getClass());
+
+ private static final String MSG_NODE = "KubeVirt node %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 DEVICE_ID_COUNTER_NAME = "device-id-counter";
+
+ private static final String ERR_NULL_NODE = "KubeVirt node cannot be null";
+ private static final String ERR_NULL_HOSTNAME = "KubeVirt node hostname cannot be null";
+ private static final String ERR_NULL_DEVICE_ID = "KubeVirt node device ID cannot be null";
+
+ private static final String NOT_DUPLICATED_MSG = "% cannot be duplicated";
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected KubevirtNodeStore nodeStore;
+
+ @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 OvsdbController ovsdbController;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY)
+ protected DeviceService deviceService;
+
+ /**
+ * OVSDB server listen port.
+ */
+ private int ovsdbPortNum = OVSDB_PORT_NUM_DEFAULT;
+
+ private final ExecutorService eventExecutor = newSingleThreadExecutor(
+ groupedThreads(this.getClass().getSimpleName(), "event-handler", log));
+
+ private final KubevirtNodeStoreDelegate delegate = new InternalNodeStoreDelegate();
+
+ private AtomicCounter deviceIdCounter;
+
+ private ApplicationId appId;
+
+ @Activate
+ protected void activate() {
+ appId = coreService.registerApplication(APP_ID);
+ nodeStore.setDelegate(delegate);
+
+ leadershipService.runForLeadership(appId.name());
+
+ deviceIdCounter = storageService.getAtomicCounter(DEVICE_ID_COUNTER_NAME);
+
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ nodeStore.unsetDelegate(delegate);
+
+ leadershipService.withdraw(appId.name());
+ eventExecutor.shutdown();
+
+ log.info("Stopped");
+ }
+
+ @Modified
+ protected void modified(ComponentContext context) {
+ Dictionary<?, ?> properties = context.getProperties();
+ int updatedOvsdbPort = Tools.getIntegerProperty(properties, OVSDB_PORT);
+ if (!Objects.equals(updatedOvsdbPort, ovsdbPortNum)) {
+ ovsdbPortNum = updatedOvsdbPort;
+ }
+
+ log.info("Modified");
+ }
+
+ @Override
+ public void createNode(KubevirtNode node) {
+ checkNotNull(node, ERR_NULL_NODE);
+
+ KubevirtNode intNode;
+
+ if (node.intgBridge() == null) {
+ String deviceIdStr = genDpid(deviceIdCounter.incrementAndGet());
+ checkNotNull(deviceIdStr, ERR_NULL_DEVICE_ID);
+ intNode = node.updateIntgBridge(DeviceId.deviceId(deviceIdStr));
+ checkArgument(!hasIntgBridge(intNode.intgBridge(), intNode.hostname()),
+ NOT_DUPLICATED_MSG, intNode.intgBridge());
+ } else {
+ intNode = node;
+ checkArgument(!hasIntgBridge(intNode.intgBridge(), intNode.hostname()),
+ NOT_DUPLICATED_MSG, intNode.intgBridge());
+ }
+
+ nodeStore.createNode(intNode);
+
+ log.info(String.format(MSG_NODE, intNode.hostname(), MSG_CREATED));
+ }
+
+ @Override
+ public void updateNode(KubevirtNode node) {
+ checkNotNull(node, ERR_NULL_NODE);
+
+ KubevirtNode intNode;
+
+ KubevirtNode existingNode = nodeStore.node(node.hostname());
+ checkNotNull(existingNode, ERR_NULL_NODE);
+
+ DeviceId existIntgBridge = nodeStore.node(node.hostname()).intgBridge();
+
+ if (node.intgBridge() == null) {
+ intNode = node.updateIntgBridge(existIntgBridge);
+ checkArgument(!hasIntgBridge(intNode.intgBridge(), intNode.hostname()),
+ NOT_DUPLICATED_MSG, intNode.intgBridge());
+ } else {
+ intNode = node;
+ checkArgument(!hasIntgBridge(intNode.intgBridge(), intNode.hostname()),
+ NOT_DUPLICATED_MSG, intNode.intgBridge());
+ }
+
+ nodeStore.updateNode(intNode);
+
+ log.info(String.format(MSG_NODE, intNode.hostname(), MSG_UPDATED));
+ }
+
+ @Override
+ public KubevirtNode removeNode(String hostname) {
+ checkArgument(!Strings.isNullOrEmpty(hostname), ERR_NULL_HOSTNAME);
+ KubevirtNode node = nodeStore.removeNode(hostname);
+ log.info(String.format(MSG_NODE, hostname, MSG_REMOVED));
+ return node;
+ }
+
+ @Override
+ public Set<KubevirtNode> nodes() {
+ return nodeStore.nodes();
+ }
+
+ @Override
+ public Set<KubevirtNode> nodes(KubevirtNode.Type type) {
+ Set<KubevirtNode> nodes = nodeStore.nodes().stream()
+ .filter(node -> Objects.equals(node.type(), type))
+ .collect(Collectors.toSet());
+ return ImmutableSet.copyOf(nodes);
+ }
+
+ @Override
+ public Set<KubevirtNode> completeNodes() {
+ Set<KubevirtNode> nodes = nodeStore.nodes().stream()
+ .filter(node -> node.state() == KubevirtNodeState.COMPLETE)
+ .collect(Collectors.toSet());
+ return ImmutableSet.copyOf(nodes);
+ }
+
+ @Override
+ public Set<KubevirtNode> completeNodes(KubevirtNode.Type type) {
+ Set<KubevirtNode> nodes = nodeStore.nodes().stream()
+ .filter(node -> node.type() == type &&
+ node.state() == KubevirtNodeState.COMPLETE)
+ .collect(Collectors.toSet());
+ return ImmutableSet.copyOf(nodes);
+ }
+
+ @Override
+ public KubevirtNode node(String hostname) {
+ return nodeStore.node(hostname);
+ }
+
+ @Override
+ public KubevirtNode node(DeviceId deviceId) {
+ return nodeStore.nodes().stream()
+ .filter(node -> Objects.equals(node.intgBridge(), deviceId) ||
+ Objects.equals(node.ovsdb(), deviceId))
+ .findFirst().orElse(null);
+ }
+
+ @Override
+ public KubevirtNode node(IpAddress mgmtIp) {
+ return nodeStore.nodes().stream()
+ .filter(node -> Objects.equals(node.managementIp(), mgmtIp))
+ .findFirst().orElse(null);
+ }
+
+ private boolean hasIntgBridge(DeviceId deviceId, String hostname) {
+ Optional<KubevirtNode> existNode = nodeStore.nodes().stream()
+ .filter(n -> !n.hostname().equals(hostname))
+ .filter(n -> deviceId.equals(n.intgBridge()))
+ .findFirst();
+
+ return existNode.isPresent();
+ }
+
+ private class InternalNodeStoreDelegate implements KubevirtNodeStoreDelegate {
+
+ @Override
+ public void notify(KubevirtNodeEvent event) {
+ if (event != null) {
+ log.trace("send kubevirt node event {}", event);
+ process(event);
+ }
+ }
+ }
+}