Implement kubevirt node service, expose it through REST API and CLI

Change-Id: Ieebd2652af31344df3a7c91d3669a2ba150cb57f
diff --git a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/DefaultKubevirtNode.java b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/DefaultKubevirtNode.java
index cd653ce..3815ff3 100644
--- a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/DefaultKubevirtNode.java
+++ b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/DefaultKubevirtNode.java
@@ -125,6 +125,20 @@
     }
 
     @Override
+    public KubevirtNode updateIntgBridge(DeviceId deviceId) {
+        return new Builder()
+                .hostname(hostname)
+                .clusterName(clusterName)
+                .type(type)
+                .intgBridge(deviceId)
+                .managementIp(managementIp)
+                .dataIp(dataIp)
+                .state(state)
+                .phyIntfs(phyIntfs)
+                .build();
+    }
+
+    @Override
     public Collection<KubevirtPhyInterface> phyIntfs() {
         if (phyIntfs == null) {
             return new ArrayList<>();
diff --git a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNode.java b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNode.java
index 544c76b..402d0f9 100644
--- a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNode.java
+++ b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNode.java
@@ -100,11 +100,19 @@
      * Returns new kubevirt node instance with given state.
      *
      * @param newState updated state
-     * @return updated kubernetes node
+     * @return updated kubevirt node
      */
     KubevirtNode updateState(KubevirtNodeState newState);
 
     /**
+     * Returns new kubevirt node instance with given integration bridge.
+     *
+     * @param deviceId  integration bridge device ID
+     * @return updated kubevirt node
+     */
+    KubevirtNode updateIntgBridge(DeviceId deviceId);
+
+    /**
      * Returns a collection of physical interfaces.
      *
      * @return physical interfaces
diff --git a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeAdminService.java b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeAdminService.java
new file mode 100644
index 0000000..424a422
--- /dev/null
+++ b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeAdminService.java
@@ -0,0 +1,44 @@
+/*
+ * 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.api;
+
+/**
+ * Service for administering inventory of {@link KubevirtNode}.
+ */
+public interface KubevirtNodeAdminService extends KubevirtNodeService {
+
+    /**
+     * Creates a new node.
+     *
+     * @param node kubevirt node
+     */
+    void createNode(KubevirtNode node);
+
+    /**
+     * Updates the node.
+     *
+     * @param node kubevirt node
+     */
+    void updateNode(KubevirtNode node);
+
+    /**
+     * Removes the node.
+     *
+     * @param hostname kubevirt node hostname
+     * @return removed node; null if the node does not exist
+     */
+    KubevirtNode removeNode(String hostname);
+}
diff --git a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeEvent.java b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeEvent.java
new file mode 100644
index 0000000..742c0d7
--- /dev/null
+++ b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeEvent.java
@@ -0,0 +1,59 @@
+/*
+ * 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.api;
+
+import org.onosproject.event.AbstractEvent;
+
+/**
+ * Describes Kubevirt node init state event.
+ */
+public class KubevirtNodeEvent extends AbstractEvent<KubevirtNodeEvent.Type, KubevirtNode> {
+
+    /**
+     * List of kubevirt node event types.
+     */
+    public enum Type {
+
+        /**
+         * Signifies that new node is created.
+         */
+        KUBEVIRT_NODE_CREATED,
+
+        /**
+         * Signifies that the node state is updated.
+         */
+        KUBEVIRT_NODE_UPDATED,
+
+        /**
+         * Signifies that the node state is complete.
+         */
+        KUBEVIRT_NODE_COMPLETE,
+
+        /**
+         * Signifies that the node state is removed.
+         */
+        KUBEVIRT_NODE_REMOVED,
+
+        /**
+         * Signifies that the node state is changed to incomplete.
+         */
+        KUBEVIRT_NODE_INCOMPLETE
+    }
+
+    public KubevirtNodeEvent(Type type, KubevirtNode subject) {
+        super(type, subject);
+    }
+}
diff --git a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeListener.java b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeListener.java
new file mode 100644
index 0000000..c5cff24
--- /dev/null
+++ b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeListener.java
@@ -0,0 +1,24 @@
+/*
+ * 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.api;
+
+import org.onosproject.event.EventListener;
+
+/**
+ * Listener for KubevirtNode event.
+ */
+public interface KubevirtNodeListener extends EventListener<KubevirtNodeEvent> {
+}
diff --git a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeService.java b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeService.java
new file mode 100644
index 0000000..e032ba3
--- /dev/null
+++ b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeService.java
@@ -0,0 +1,85 @@
+/*
+ * 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.api;
+
+import org.onlab.packet.IpAddress;
+import org.onosproject.event.ListenerService;
+import org.onosproject.net.DeviceId;
+
+import java.util.Set;
+
+/**
+ * Service for interfacing with the inventory of {@link KubevirtNode}.
+ */
+public interface KubevirtNodeService extends ListenerService<KubevirtNodeEvent, KubevirtNodeListener> {
+
+    String APP_ID = "org.onosproject.kubevirtnode";
+
+    /**
+     * Returns all registered nodes.
+     *
+     * @return set of kubevirt nodes
+     */
+    Set<KubevirtNode> nodes();
+
+    /**
+     * Returns all nodes with the specified type.
+     *
+     * @param type node type
+     * @return set of kubevirt nodes
+     */
+    Set<KubevirtNode> nodes(KubevirtNode.Type type);
+
+    /**
+     * Returns all nodes with complete state.
+     *
+     * @return set of kubevirt nodes
+     */
+    Set<KubevirtNode> completeNodes();
+
+    /**
+     * Returns all nodes with complete state and the specified type.
+     *
+     * @param type node type
+     * @return set of kubevirt nodes
+     */
+    Set<KubevirtNode> completeNodes(KubevirtNode.Type type);
+
+    /**
+     * Returns the node with the specified hostname.
+     *
+     * @param hostname hostname
+     * @return kubevirt node
+     */
+    KubevirtNode node(String hostname);
+
+    /**
+     * Returns the node with the specified device ID.
+     * The device ID can be any one of integration bridge or ovsdb device.
+     *
+     * @param deviceId device id
+     * @return kubevirt node
+     */
+    KubevirtNode node(DeviceId deviceId);
+
+    /**
+     * Returns the node with the specified management IP address.
+     *
+     * @param mgmtIp management IP
+     * @return kubevirt node
+     */
+    KubevirtNode node(IpAddress mgmtIp);
+}
diff --git a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeStore.java b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeStore.java
new file mode 100644
index 0000000..b6a9f03
--- /dev/null
+++ b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeStore.java
@@ -0,0 +1,63 @@
+/*
+ * 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.api;
+
+import org.onosproject.store.Store;
+
+import java.util.Set;
+
+/**
+ * Manages inventory of KubevirtNode; not intended for direct use.
+ */
+public interface KubevirtNodeStore extends Store<KubevirtNodeEvent, KubevirtNodeStoreDelegate> {
+
+    /**
+     * Creates a new node.
+     *
+     * @param node kubevirt node
+     */
+    void createNode(KubevirtNode node);
+
+    /**
+     * Updates the node.
+     *
+     * @param node kubevirt node
+     */
+    void updateNode(KubevirtNode node);
+
+    /**
+     * Removes the node.
+     *
+     * @param hostname kubevirt node hostname
+     * @return removed kubevirt node; null if no node mapped for the hostname
+     */
+    KubevirtNode removeNode(String hostname);
+
+    /**
+     * Returns all registered nodes.
+     *
+     * @return set of kubevirt nodes
+     */
+    Set<KubevirtNode> nodes();
+
+    /**
+     * Returns the node with the specified hostname.
+     *
+     * @param hostname hostname
+     * @return kubevirt node
+     */
+    KubevirtNode node(String hostname);
+}
diff --git a/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeStoreDelegate.java b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeStoreDelegate.java
new file mode 100644
index 0000000..5e87855
--- /dev/null
+++ b/apps/kubevirt-node/api/src/main/java/org/onosproject/kubevirtnode/api/KubevirtNodeStoreDelegate.java
@@ -0,0 +1,24 @@
+/*
+ * 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.api;
+
+import org.onosproject.store.StoreDelegate;
+
+/**
+ * KubevirtNode store delegate.
+ */
+public interface KubevirtNodeStoreDelegate extends StoreDelegate<KubevirtNodeEvent> {
+}
diff --git a/apps/kubevirt-node/app/BUILD b/apps/kubevirt-node/app/BUILD
index 601bc8a..372831d 100644
--- a/apps/kubevirt-node/app/BUILD
+++ b/apps/kubevirt-node/app/BUILD
@@ -14,6 +14,7 @@
 ]
 
 TEST_DEPS = TEST_ADAPTERS + TEST_REST + [
+    "//apps/kubevirt-node/api:onos-apps-kubevirt-node-api-tests",
     "//core/api:onos-api-tests",
     "//core/common:onos-core-common-tests",
     "//web/api:onos-rest-tests",
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/cli/KubevirtNodeListCommand.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/cli/KubevirtNodeListCommand.java
new file mode 100644
index 0000000..97c6eaf
--- /dev/null
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/cli/KubevirtNodeListCommand.java
@@ -0,0 +1,88 @@
+/*
+ * 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.cli;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Lists;
+import org.apache.commons.lang.StringUtils;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.kubevirtnode.api.KubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNodeService;
+
+import java.util.Comparator;
+import java.util.List;
+
+import static org.onosproject.kubevirtnode.util.KubevirtNodeUtil.genFormatString;
+import static org.onosproject.kubevirtnode.util.KubevirtNodeUtil.prettyJson;
+
+
+/**
+ * Lists all nodes registered to the service.
+ */
+@Service
+@Command(scope = "onos", name = "kubevirt-nodes",
+        description = "Lists all nodes registered in KubeVirt node service")
+public class KubevirtNodeListCommand extends AbstractShellCommand {
+
+    private static final int HOSTNAME_LENGTH = 35;
+    private static final int TYPE_LENGTH = 15;
+    private static final int MANAGEMENT_IP_LENGTH = 25;
+    private static final int DATA_IP_LENGTH = 25;
+    private static final int STATUS = 15;
+    private static final int MARGIN_LENGTH = 2;
+
+    @Override
+    protected void doExecute() throws Exception {
+        KubevirtNodeService nodeService = get(KubevirtNodeService.class);
+        List<KubevirtNode> nodes = Lists.newArrayList(nodeService.nodes());
+        nodes.sort(Comparator.comparing(KubevirtNode::hostname));
+
+        String format = genFormatString(ImmutableList.of(HOSTNAME_LENGTH,
+                TYPE_LENGTH, MANAGEMENT_IP_LENGTH, DATA_IP_LENGTH, STATUS));
+
+        if (outputJson()) {
+            print("%s", json(nodes));
+        } else {
+            print(format, "Hostname", "Type", "Management IP", "Data IP", "State");
+            for (KubevirtNode node : nodes) {
+                print(format,
+                        StringUtils.substring(node.hostname(), 0,
+                                HOSTNAME_LENGTH - MARGIN_LENGTH),
+                        node.type(),
+                        StringUtils.substring(node.managementIp().toString(), 0,
+                                MANAGEMENT_IP_LENGTH - MARGIN_LENGTH),
+                        node.dataIp() != null ? StringUtils.substring(
+                                node.dataIp().toString(), 0,
+                                DATA_IP_LENGTH - MARGIN_LENGTH) : "",
+                        node.state());
+            }
+            print("Total %s nodes", nodeService.nodes().size());
+        }
+    }
+
+    private String json(List<KubevirtNode> nodes) {
+        ObjectMapper mapper = new ObjectMapper();
+        ArrayNode result = mapper.createArrayNode();
+        for (KubevirtNode node : nodes) {
+            result.add(jsonForEntity(node, KubevirtNode.class));
+        }
+        return prettyJson(mapper, result.toString());
+    }
+}
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DistributedKubevirtNodeStore.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DistributedKubevirtNodeStore.java
new file mode 100644
index 0000000..ee488d4
--- /dev/null
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DistributedKubevirtNodeStore.java
@@ -0,0 +1,204 @@
+/*
+ * 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;
+
+/**
+ * Implementation of kubevirt node store using consistent map.
+ */
+
+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.DefaultKubevirtNode;
+import org.onosproject.kubevirtnode.api.DefaultKubevirtPhyInterface;
+import org.onosproject.kubevirtnode.api.KubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNodeEvent;
+import org.onosproject.kubevirtnode.api.KubevirtNodeState;
+import org.onosproject.kubevirtnode.api.KubevirtNodeStore;
+import org.onosproject.kubevirtnode.api.KubevirtNodeStoreDelegate;
+import org.onosproject.kubevirtnode.api.KubevirtPhyInterface;
+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.KubevirtNodeEvent.Type.KUBEVIRT_NODE_COMPLETE;
+import static org.onosproject.kubevirtnode.api.KubevirtNodeEvent.Type.KUBEVIRT_NODE_CREATED;
+import static org.onosproject.kubevirtnode.api.KubevirtNodeEvent.Type.KUBEVIRT_NODE_INCOMPLETE;
+import static org.onosproject.kubevirtnode.api.KubevirtNodeEvent.Type.KUBEVIRT_NODE_REMOVED;
+import static org.onosproject.kubevirtnode.api.KubevirtNodeEvent.Type.KUBEVIRT_NODE_UPDATED;
+import static org.slf4j.LoggerFactory.getLogger;
+
+@Component(immediate = true, service = KubevirtNodeStore.class)
+public class DistributedKubevirtNodeStore
+        extends AbstractStore<KubevirtNodeEvent, KubevirtNodeStoreDelegate>
+        implements KubevirtNodeStore {
+
+    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_NODE = KryoNamespace.newBuilder()
+            .register(KryoNamespaces.API)
+            .register(KubevirtNode.class)
+            .register(DefaultKubevirtNode.class)
+            .register(KubevirtPhyInterface.class)
+            .register(DefaultKubevirtPhyInterface.class)
+            .register(KubevirtNode.Type.class)
+            .register(KubevirtNodeState.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, KubevirtNode> nodeMapEventListener =
+            new KubevirtNodeMapListener();
+
+    private ConsistentMap<String, KubevirtNode> nodeStore;
+
+    @Activate
+    protected void activate() {
+        ApplicationId appId = coreService.registerApplication(APP_ID);
+        nodeStore = storageService.<String, KubevirtNode>consistentMapBuilder()
+                .withSerializer(Serializer.using(SERIALIZER_KUBEVIRT_NODE))
+                .withName("kubevirt-nodestore")
+                .withApplicationId(appId)
+                .build();
+        nodeStore.addListener(nodeMapEventListener);
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        nodeStore.removeListener(nodeMapEventListener);
+        eventExecutor.shutdown();
+        log.info("Stopped");
+    }
+
+    @Override
+    public void createNode(KubevirtNode node) {
+        nodeStore.compute(node.hostname(), (hostname, existing) -> {
+            final String error = node.hostname() + ERR_DUPLICATE;
+            checkArgument(existing == null, error);
+            return node;
+        });
+    }
+
+    @Override
+    public void updateNode(KubevirtNode node) {
+        nodeStore.compute(node.hostname(), (hostname, existing) -> {
+            final String error = node.hostname() + ERR_NOT_FOUND;
+            checkArgument(existing != null, error);
+            return node;
+        });
+    }
+
+    @Override
+    public KubevirtNode removeNode(String hostname) {
+        Versioned<KubevirtNode> node = nodeStore.remove(hostname);
+        if (node == null) {
+            final String error = hostname + ERR_NOT_FOUND;
+            throw new IllegalArgumentException(error);
+        }
+        return node.value();
+    }
+
+    @Override
+    public Set<KubevirtNode> nodes() {
+        return ImmutableSet.copyOf(nodeStore.asJavaMap().values());
+    }
+
+    @Override
+    public KubevirtNode node(String hostname) {
+        return nodeStore.asJavaMap().get(hostname);
+    }
+
+    private class KubevirtNodeMapListener
+            implements MapEventListener<String, KubevirtNode> {
+
+        @Override
+        public void event(MapEvent<String, KubevirtNode> event) {
+            switch (event.type()) {
+                case INSERT:
+                    log.debug("Kubevirt node created {}", event.newValue());
+                    eventExecutor.execute(() -> processNodeCreation(event));
+                    break;
+                case UPDATE:
+                    log.debug("Kubevirt node updated {}", event.newValue());
+                    eventExecutor.execute(() -> processNodeUpdate(event));
+                    break;
+                case REMOVE:
+                    log.debug("Kubevirt node removed {}", event.oldValue());
+                    eventExecutor.execute(() -> processNodeRemoval(event));
+                    break;
+                default:
+                    // do nothing
+                    break;
+            }
+        }
+
+        private void processNodeCreation(MapEvent<String, KubevirtNode> event) {
+            notifyDelegate(new KubevirtNodeEvent(
+                    KUBEVIRT_NODE_CREATED, event.newValue().value()));
+        }
+
+        private void processNodeUpdate(MapEvent<String, KubevirtNode> event) {
+            notifyDelegate(new KubevirtNodeEvent(
+                    KUBEVIRT_NODE_UPDATED, event.newValue().value()));
+
+            if (event.newValue().value().state() == KubevirtNodeState.COMPLETE) {
+                notifyDelegate(new KubevirtNodeEvent(
+                        KUBEVIRT_NODE_COMPLETE, event.newValue().value()));
+            } else if (event.newValue().value().state() == KubevirtNodeState.INCOMPLETE) {
+                notifyDelegate(new KubevirtNodeEvent(
+                        KUBEVIRT_NODE_INCOMPLETE, event.newValue().value()));
+            }
+        }
+
+        private void processNodeRemoval(MapEvent<String, KubevirtNode> event) {
+            notifyDelegate(new KubevirtNodeEvent(
+                    KUBEVIRT_NODE_REMOVED, event.oldValue().value()));
+        }
+    }
+}
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);
+            }
+        }
+    }
+}
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/OsgiPropertyConstants.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/OsgiPropertyConstants.java
new file mode 100644
index 0000000..ae1b04c
--- /dev/null
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/OsgiPropertyConstants.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2018-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;
+
+/**
+ * Name/Value constants for properties.
+ */
+public final class OsgiPropertyConstants {
+    private OsgiPropertyConstants() {
+    }
+
+    static final String OVSDB_PORT = "ovsdbPortNum";
+    static final int OVSDB_PORT_NUM_DEFAULT = 6640;
+
+    static final String AUTO_RECOVERY = "autoRecovery";
+    static final boolean AUTO_RECOVERY_DEFAULT = true;
+}
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/util/KubevirtNodeUtil.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/util/KubevirtNodeUtil.java
new file mode 100644
index 0000000..646965b
--- /dev/null
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/util/KubevirtNodeUtil.java
@@ -0,0 +1,98 @@
+/*
+ * 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.util;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.List;
+
+/**
+ * An utility that used in KubeVirt node app.
+ */
+public final class KubevirtNodeUtil {
+
+    private static final Logger log = LoggerFactory.getLogger(KubevirtNodeUtil.class);
+
+    private static final String COLON_SLASH = "://";
+    private static final String COLON = ":";
+
+    private static final int HEX_LENGTH = 16;
+    private static final String OF_PREFIX = "of:";
+    private static final String ZERO = "0";
+
+    /**
+     * Prevents object installation from external.
+     */
+    private KubevirtNodeUtil() {
+    }
+
+    /**
+     * Generates a DPID (of:0000000000000001) from an index value.
+     *
+     * @param index index value
+     * @return generated DPID
+     */
+    public static String genDpid(long index) {
+        if (index < 0) {
+            return null;
+        }
+
+        String hexStr = Long.toHexString(index);
+
+        StringBuilder zeroPadding = new StringBuilder();
+        for (int i = 0; i < HEX_LENGTH - hexStr.length(); i++) {
+            zeroPadding.append(ZERO);
+        }
+
+        return OF_PREFIX + zeroPadding.toString() + hexStr;
+    }
+
+    /**
+     * Generates string format based on the given string length list.
+     *
+     * @param stringLengths a list of string lengths
+     * @return string format (e.g., %-28s%-15s%-24s%-20s%-15s)
+     */
+    public static String genFormatString(List<Integer> stringLengths) {
+        StringBuilder fsb = new StringBuilder();
+        stringLengths.forEach(length -> {
+            fsb.append("%-");
+            fsb.append(length);
+            fsb.append("s");
+        });
+        return fsb.toString();
+    }
+
+    /**
+     * Prints out the JSON string in pretty format.
+     *
+     * @param mapper        Object mapper
+     * @param jsonString    JSON string
+     * @return pretty formatted JSON string
+     */
+    public static String prettyJson(ObjectMapper mapper, String jsonString) {
+        try {
+            Object jsonObject = mapper.readValue(jsonString, Object.class);
+            return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(jsonObject);
+        } catch (IOException e) {
+            log.debug("Json string parsing exception caused by {}", e);
+        }
+        return null;
+    }
+}
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/web/KubevirtNodeWebResource.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/web/KubevirtNodeWebResource.java
index 65e5901..e3b18ba 100644
--- a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/web/KubevirtNodeWebResource.java
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/web/KubevirtNodeWebResource.java
@@ -15,23 +15,66 @@
  */
 package org.onosproject.kubevirtnode.web;
 
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.Sets;
+import org.onosproject.kubevirtnode.api.KubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNodeAdminService;
+import org.onosproject.kubevirtnode.api.KubevirtNodeState;
 import org.onosproject.rest.AbstractWebResource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
 import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
 import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
+import javax.ws.rs.core.Context;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriBuilder;
+import javax.ws.rs.core.UriInfo;
 import java.io.InputStream;
+import java.util.Set;
 
+import static com.fasterxml.jackson.databind.SerializationFeature.INDENT_OUTPUT;
+import static javax.ws.rs.core.Response.created;
+import static org.onlab.util.Tools.nullIsIllegal;
+import static org.onlab.util.Tools.readTreeFromStream;
+
+/**
+ * Handles REST API call of KubeVirt node config.
+ */
 @Path("configure")
 public class KubevirtNodeWebResource extends AbstractWebResource {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
+    private static final String MESSAGE_NODE = "Received node %s request";
+    private static final String NODES = "nodes";
+    private static final String CREATE = "CREATE";
+    private static final String UPDATE = "UPDATE";
+    private static final String NODE_ID = "NODE_ID";
+    private static final String REMOVE = "REMOVE";
+    private static final String QUERY = "QUERY";
+    private static final String INIT = "INIT";
+    private static final String NOT_EXIST = "Not exist";
+    private static final String STATE = "State";
+    private static final String RESULT = "Result";
+
+    private static final String HOST_NAME = "hostname";
+    private static final String ERROR_MESSAGE = " cannot be null";
+
+    private final KubevirtNodeAdminService nodeAdminService = get(KubevirtNodeAdminService.class);
+
+    @Context
+    private UriInfo uriInfo;
+
     /**
      * Creates a set of KubeVirt nodes' config from the JSON input stream.
      *
@@ -44,7 +87,180 @@
     @Path("node")
     @Consumes(MediaType.APPLICATION_JSON)
     @Produces(MediaType.APPLICATION_JSON)
-    public Response dummy(InputStream input) {
+    public Response createNodes(InputStream input) {
+        log.trace(String.format(MESSAGE_NODE, CREATE));
+
+        readNodeConfiguration(input).forEach(node -> {
+            KubevirtNode existing = nodeAdminService.node(node.hostname());
+            if (existing == null) {
+                nodeAdminService.createNode(node);
+            }
+        });
+
+        UriBuilder locationBuilder = uriInfo.getBaseUriBuilder()
+                .path(NODES)
+                .path(NODE_ID);
+
+        return created(locationBuilder.build()).build();
+    }
+
+    /**
+     * Updates a set of KubeVirt nodes' config from the JSON input stream.
+     *
+     * @param input KubeVirt nodes JSON input stream
+     * @return 200 OK with the updated KubeVirt node's config, 400 BAD_REQUEST
+     * if the JSON is malformed, and 304 NOT_MODIFIED without the updated config
+     * @onos.rsModel KubevirtNode
+     */
+    @PUT
+    @Path("node")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response updateNodes(InputStream input) {
+        log.trace(String.format(MESSAGE_NODE, UPDATE));
+
+        Set<KubevirtNode> nodes = readNodeConfiguration(input);
+        for (KubevirtNode node: nodes) {
+            KubevirtNode existing = nodeAdminService.node(node.hostname());
+            if (existing == null) {
+                log.warn("There is no node configuration to update : {}", node.hostname());
+                return Response.notModified().build();
+            } else if (!existing.equals(node)) {
+                nodeAdminService.updateNode(node);
+            }
+        }
+
         return Response.ok().build();
     }
+
+    /**
+     * Removes a set of KubeVirt nodes' config from the JSON input stream.
+     *
+     * @param hostname host name contained in KubeVirt nodes configuration
+     * @return 204 NO_CONTENT, 400 BAD_REQUEST if the JSON is malformed, and
+     * 304 NOT_MODIFIED without the updated config
+     */
+    @DELETE
+    @Path("node/{hostname}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response deleteNode(@PathParam("hostname") String hostname) {
+        log.trace(String.format(MESSAGE_NODE, REMOVE));
+
+        KubevirtNode existing = nodeAdminService.node(
+                nullIsIllegal(hostname, HOST_NAME + ERROR_MESSAGE));
+
+        if (existing == null) {
+            log.warn("There is no node configuration to delete : {}", hostname);
+            return Response.notModified().build();
+        } else {
+            nodeAdminService.removeNode(hostname);
+        }
+
+        return Response.noContent().build();
+    }
+
+    /**
+     * Obtains the state of the KubeVirt node.
+     *
+     * @param hostname hostname of the KubeVirt
+     * @return the state of the KubeVirt node in Json
+     */
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    @Path("state/{hostname}")
+    public Response stateOfNode(@PathParam("hostname") String hostname) {
+        log.trace(String.format(MESSAGE_NODE, QUERY));
+
+        KubevirtNode node = nodeAdminService.node(hostname);
+        String nodeState = node != null ? node.state().toString() : NOT_EXIST;
+
+        return ok(mapper().createObjectNode().put(STATE, nodeState)).build();
+    }
+
+    /**
+     * Initializes KubeVirt node.
+     *
+     * @param hostname hostname of KubeVirt node
+     * @return 200 OK with init result, 404 not found, 500 server error
+     */
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    @Path("init/node/{hostname}")
+    public Response initNode(@PathParam("hostname") String hostname) {
+        log.trace(String.format(MESSAGE_NODE, QUERY));
+
+        KubevirtNode node = nodeAdminService.node(hostname);
+        if (node == null) {
+            log.error("Given node {} does not exist", hostname);
+            return Response.serverError().build();
+        }
+        KubevirtNode updated = node.updateState(KubevirtNodeState.INIT);
+        nodeAdminService.updateNode(updated);
+        return ok(mapper().createObjectNode()).build();
+    }
+
+    /**
+     * Initializes all KubeVirt nodes.
+     *
+     * @return 200 OK with init result, 500 server error
+     */
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    @Path("init/all")
+    public Response initAllNodes() {
+        log.trace(String.format(MESSAGE_NODE, QUERY));
+
+        nodeAdminService.nodes()
+                .forEach(n -> {
+                    KubevirtNode updated = n.updateState(KubevirtNodeState.INIT);
+                    nodeAdminService.updateNode(updated);
+                });
+
+        return ok(mapper().createObjectNode()).build();
+    }
+
+    /**
+     * Initializes KubeVirt nodes which are in the stats other than COMPLETE.
+     *
+     * @return 200 OK with init result, 500 server error
+     */
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    @Path("init/incomplete")
+    public Response initIncompleteNodes() {
+        log.trace(String.format(MESSAGE_NODE, QUERY));
+
+        nodeAdminService.nodes().stream()
+                .filter(n -> n.state() != KubevirtNodeState.COMPLETE)
+                .forEach(n -> {
+                    KubevirtNode updated = n.updateState(KubevirtNodeState.INIT);
+                    nodeAdminService.updateNode(updated);
+                });
+
+        return ok(mapper().createObjectNode()).build();
+    }
+
+    private Set<KubevirtNode> readNodeConfiguration(InputStream input) {
+        Set<KubevirtNode> nodeSet = Sets.newHashSet();
+        try {
+            JsonNode jsonTree = readTreeFromStream(mapper().enable(INDENT_OUTPUT), input);
+            ArrayNode nodes = (ArrayNode) jsonTree.path(NODES);
+            nodes.forEach(node -> {
+                try {
+                    ObjectNode objectNode = node.deepCopy();
+                    KubevirtNode kubevirtNode =
+                            codec(KubevirtNode.class).decode(objectNode, this);
+                    nodeSet.add(kubevirtNode);
+                } catch (Exception e) {
+                    log.error("Exception occurred due to {}", e);
+                    throw new IllegalArgumentException();
+                }
+            });
+        } catch (Exception e) {
+            throw new IllegalArgumentException(e);
+        }
+
+        return nodeSet;
+    }
 }
diff --git a/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/impl/KubevirtNodeManagerTest.java b/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/impl/KubevirtNodeManagerTest.java
new file mode 100644
index 0000000..5bf6f21
--- /dev/null
+++ b/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/impl/KubevirtNodeManagerTest.java
@@ -0,0 +1,236 @@
+/*
+ * 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.Lists;
+import com.google.common.util.concurrent.MoreExecutors;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.junit.TestUtils;
+import org.onlab.packet.IpAddress;
+import org.onosproject.cluster.ClusterServiceAdapter;
+import org.onosproject.cluster.LeadershipServiceAdapter;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreServiceAdapter;
+import org.onosproject.core.DefaultApplicationId;
+import org.onosproject.event.Event;
+import org.onosproject.kubevirtnode.api.DefaultKubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNodeEvent;
+import org.onosproject.kubevirtnode.api.KubevirtNodeListener;
+import org.onosproject.kubevirtnode.api.KubevirtNodeState;
+import org.onosproject.kubevirtnode.api.KubevirtNodeTest;
+import org.onosproject.net.Device;
+import org.onosproject.store.service.TestStorageService;
+
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.onosproject.kubevirtnode.api.KubevirtNode.Type.WORKER;
+import static org.onosproject.kubevirtnode.api.KubevirtNodeEvent.Type.KUBEVIRT_NODE_COMPLETE;
+import static org.onosproject.kubevirtnode.api.KubevirtNodeEvent.Type.KUBEVIRT_NODE_CREATED;
+import static org.onosproject.kubevirtnode.api.KubevirtNodeEvent.Type.KUBEVIRT_NODE_REMOVED;
+import static org.onosproject.kubevirtnode.api.KubevirtNodeEvent.Type.KUBEVIRT_NODE_UPDATED;
+
+/**
+ * Unit tests for KubeVirt node manager.
+ */
+public class KubevirtNodeManagerTest extends KubevirtNodeTest {
+
+    private static final ApplicationId TEST_APP_ID = new DefaultApplicationId(1, "test");
+
+    private static final String ERR_SIZE = "Number of nodes did not match";
+    private static final String ERR_NOT_MATCH = "Node did not match";
+    private static final String ERR_NOT_FOUND = "Node did not exist";
+
+    private static final String WORKER_1_HOSTNAME = "worker_1";
+    private static final String WORKER_2_HOSTNAME = "worker_2";
+    private static final String WORKER_3_HOSTNAME = "worker_3";
+    private static final String WORKER_1_DUP_INT_HOSTNAME = "worker_1_dup_int";
+
+    private static final Device WORKER_1_INTG_DEVICE = createDevice(1);
+    private static final Device WORKER_2_INTG_DEVICE = createDevice(2);
+    private static final Device WORKER_3_INTG_DEVICE = createDevice(3);
+
+    private static final KubevirtNode WORKER_1 = createNode(
+            WORKER_1_HOSTNAME,
+            WORKER,
+            WORKER_1_INTG_DEVICE,
+            IpAddress.valueOf("10.100.0.1"),
+            KubevirtNodeState.INIT
+    );
+    private static final KubevirtNode WORKER_2 = createNode(
+            WORKER_2_HOSTNAME,
+            WORKER,
+            WORKER_2_INTG_DEVICE,
+            IpAddress.valueOf("10.100.0.2"),
+            KubevirtNodeState.INIT
+    );
+    private static final KubevirtNode WORKER_3 = createNode(
+            WORKER_3_HOSTNAME,
+            WORKER,
+            WORKER_3_INTG_DEVICE,
+            IpAddress.valueOf("10.100.0.3"),
+            KubevirtNodeState.COMPLETE
+    );
+    private static final KubevirtNode WORKER_DUP_INT = createNode(
+            WORKER_1_DUP_INT_HOSTNAME,
+            WORKER,
+            WORKER_3_INTG_DEVICE,
+            IpAddress.valueOf("10.100.0.2"),
+            KubevirtNodeState.COMPLETE
+    );
+
+    private final TestKubevirtNodeListener testListener = new TestKubevirtNodeListener();
+
+    private KubevirtNodeManager target;
+    private DistributedKubevirtNodeStore nodeStore;
+
+    @Before
+    public void setUp() {
+        nodeStore = new DistributedKubevirtNodeStore();
+        TestUtils.setField(nodeStore, "coreService", new TestCoreService());
+        TestUtils.setField(nodeStore, "storageService", new TestStorageService());
+        TestUtils.setField(nodeStore, "eventExecutor", MoreExecutors.newDirectExecutorService());
+        nodeStore.activate();
+
+        nodeStore.createNode(WORKER_2);
+        nodeStore.createNode(WORKER_3);
+
+        target = new KubevirtNodeManager();
+        target.storageService = new TestStorageService();
+        target.coreService = new TestCoreService();
+        target.clusterService = new TestClusterService();
+        target.leadershipService = new TestLeadershipService();
+        target.nodeStore = nodeStore;
+        target.addListener(testListener);
+        target.activate();
+        testListener.events.clear();
+    }
+
+    @After
+    public void tearDown() {
+        target.removeListener(testListener);
+        target.deactivate();
+        nodeStore.deactivate();
+        nodeStore = null;
+        target = null;
+    }
+
+    private static class TestKubevirtNodeListener implements KubevirtNodeListener {
+        private List<KubevirtNodeEvent> events = Lists.newArrayList();
+
+        @Override
+        public void event(KubevirtNodeEvent event) {
+            events.add(event);
+        }
+    }
+
+    /**
+     * Checks if creating and removing a node work well with proper events.
+     */
+    @Test
+    public void testCreateAndRemoveNode() {
+        target.createNode(WORKER_1);
+        assertEquals(ERR_SIZE, 3, target.nodes().size());
+        assertTrue(target.node(WORKER_1_HOSTNAME) != null);
+
+        target.removeNode(WORKER_1_HOSTNAME);
+        assertEquals(ERR_SIZE, 2, target.nodes().size());
+        assertTrue(target.node(WORKER_1_HOSTNAME) == null);
+
+        validateEvents(KUBEVIRT_NODE_CREATED, KUBEVIRT_NODE_REMOVED);
+    }
+
+    /**
+     * Checks if creating null node fails with proper exception.
+     */
+    @Test(expected = NullPointerException.class)
+    public void testCreateNullNode() {
+        target.createNode(null);
+    }
+
+    /**
+     * Checks if creating a duplicated node fails with proper exception.
+     */
+    @Test(expected = IllegalArgumentException.class)
+    public void testCreateDuplicateNode() {
+        target.createNode(WORKER_1);
+        target.createNode(WORKER_1);
+    }
+
+    /**
+     * Checks if removing null node fails with proper exception.
+     */
+    @Test(expected = IllegalArgumentException.class)
+    public void testRemoveNullNode() {
+        target.removeNode(null);
+    }
+
+    /**
+     * Checks if updating a node works well with proper event.
+     */
+    @Test
+    public void testUpdateNode() {
+        KubevirtNode updated = DefaultKubevirtNode.from(WORKER_2)
+                .dataIp(IpAddress.valueOf("10.200.0.100"))
+                .build();
+        target.updateNode(updated);
+        assertEquals(ERR_NOT_MATCH, updated, target.node(WORKER_2_INTG_DEVICE.id()));
+        validateEvents(KUBEVIRT_NODE_UPDATED);
+    }
+
+    /**
+     * Checks if updating a node state to complete generates proper events.
+     */
+    @Test
+    public void testUpdateNodeStateComplete() {
+        KubevirtNode updated = DefaultKubevirtNode.from(WORKER_2)
+                .state(KubevirtNodeState.COMPLETE)
+                .build();
+        target.updateNode(updated);
+        assertEquals(ERR_NOT_MATCH, updated, target.node(WORKER_2_HOSTNAME));
+        validateEvents(KUBEVIRT_NODE_UPDATED, KUBEVIRT_NODE_COMPLETE);
+    }
+
+    private void validateEvents(Enum... types) {
+        int i = 0;
+        assertEquals("Number of events did not match", types.length, testListener.events.size());
+        for (Event event : testListener.events) {
+            assertEquals("Incorrect event received", types[i], event.type());
+            i++;
+        }
+        testListener.events.clear();
+    }
+
+    private static class TestCoreService extends CoreServiceAdapter {
+
+        @Override
+        public ApplicationId registerApplication(String name) {
+            return TEST_APP_ID;
+        }
+    }
+
+    private class TestClusterService extends ClusterServiceAdapter {
+
+    }
+
+    private static class TestLeadershipService extends LeadershipServiceAdapter {
+
+    }
+}
diff --git a/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/web/KubevirtNodeWebResourceTest.java b/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/web/KubevirtNodeWebResourceTest.java
new file mode 100644
index 0000000..7d15e90
--- /dev/null
+++ b/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/web/KubevirtNodeWebResourceTest.java
@@ -0,0 +1,198 @@
+/*
+ * 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.web;
+
+import org.glassfish.jersey.server.ResourceConfig;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.osgi.ServiceDirectory;
+import org.onlab.osgi.TestServiceDirectory;
+import org.onlab.packet.IpAddress;
+import org.onosproject.codec.CodecService;
+import org.onosproject.codec.impl.CodecManager;
+import org.onosproject.kubevirtnode.api.DefaultKubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNodeAdminService;
+import org.onosproject.kubevirtnode.api.KubevirtNodeState;
+import org.onosproject.kubevirtnode.codec.KubevirtNodeCodec;
+import org.onosproject.net.DeviceId;
+import org.onosproject.rest.resources.ResourceTest;
+
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import java.io.InputStream;
+
+import static org.easymock.EasyMock.anyObject;
+import static org.easymock.EasyMock.anyString;
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.replay;
+import static org.easymock.EasyMock.verify;
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Unit test for KubeVirt node REST API.
+ */
+public class KubevirtNodeWebResourceTest extends ResourceTest {
+
+    final KubevirtNodeAdminService mockKubevirtNodeAdminService = createMock(KubevirtNodeAdminService.class);
+    private static final String NODE_PATH = "configure/node";
+
+    private KubevirtNode kubevirtNode;
+
+    /**
+     * Constructs a KubeVirt node resource test instance.
+     */
+    public KubevirtNodeWebResourceTest() {
+        super(ResourceConfig.forApplicationClass(KubevirtNodeWebApplication.class));
+    }
+
+    /**
+     * Sets up the global values for all the tests.
+     */
+    @Before
+    public void setUpTest() {
+        final CodecManager codecService = new CodecManager();
+        codecService.activate();
+        codecService.registerCodec(KubevirtNode.class, new KubevirtNodeCodec());
+        ServiceDirectory testDirectory =
+                new TestServiceDirectory()
+                .add(KubevirtNodeAdminService.class, mockKubevirtNodeAdminService)
+                .add(CodecService.class, codecService);
+        setServiceDirectory(testDirectory);
+
+        kubevirtNode = DefaultKubevirtNode.builder()
+                .hostname("worker-node")
+                .type(KubevirtNode.Type.WORKER)
+                .dataIp(IpAddress.valueOf("10.134.34.222"))
+                .managementIp(IpAddress.valueOf("10.134.231.30"))
+                .intgBridge(DeviceId.deviceId("of:00000000000000a1"))
+                .state(KubevirtNodeState.INIT)
+                .build();
+    }
+
+    /**
+     * Tests the results of the REST API POST method with creating new nodes operation.
+     */
+    @Test
+    public void testCreateNodesWithCreateOperation() {
+        expect(mockKubevirtNodeAdminService.node(anyString())).andReturn(null).once();
+        mockKubevirtNodeAdminService.createNode(anyObject());
+        replay(mockKubevirtNodeAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = KubevirtNodeWebResourceTest.class
+                .getResourceAsStream("kubevirt-worker-node.json");
+
+        Response response = wt.path(NODE_PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .post(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(201));
+
+        verify(mockKubevirtNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API PUT method with modifying the nodes.
+     */
+    @Test
+    public void testUpdateNodesWithModifyOperation() {
+        expect(mockKubevirtNodeAdminService.node(anyString())).andReturn(kubevirtNode).once();
+        mockKubevirtNodeAdminService.updateNode(anyObject());
+        replay(mockKubevirtNodeAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = KubevirtNodeWebResourceTest.class
+                .getResourceAsStream("kubevirt-worker-node.json");
+
+        Response response = wt.path(NODE_PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .put(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(200));
+
+        verify(mockKubevirtNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API PUT method without modifying the nodes.
+     */
+    @Test
+    public void testUpdateNodesWithoutModifyOperation() {
+        expect(mockKubevirtNodeAdminService.node(anyString())).andReturn(null).once();
+        replay(mockKubevirtNodeAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = KubevirtNodeWebResourceTest.class
+                .getResourceAsStream("kubevirt-worker-node.json");
+
+        Response response = wt.path(NODE_PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .put(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(304));
+
+        verify(mockKubevirtNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API DELETE method with deleting the nodes.
+     */
+    @Test
+    public void testDeleteNodesWithDeletionOperation() {
+        expect(mockKubevirtNodeAdminService.node(anyString())).andReturn(kubevirtNode).once();
+        expect(mockKubevirtNodeAdminService.removeNode(anyString())).andReturn(kubevirtNode).once();
+        replay(mockKubevirtNodeAdminService);
+
+        String location = NODE_PATH + "/worker-node";
+
+        final WebTarget wt = target();
+        Response response = wt.path(location).request(
+                MediaType.APPLICATION_JSON_TYPE).delete();
+
+        final int status = response.getStatus();
+
+        assertThat(status, is(204));
+
+        verify(mockKubevirtNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API DELETE method without deleting the nodes.
+     */
+    @Test
+    public void testDeleteNodesWithoutDeletionOperation() {
+        expect(mockKubevirtNodeAdminService.node(anyString())).andReturn(null).once();
+        replay(mockKubevirtNodeAdminService);
+
+        String location = NODE_PATH + "/worker-node";
+
+        final WebTarget wt = target();
+        Response response = wt.path(location).request(
+                MediaType.APPLICATION_JSON_TYPE).delete();
+
+        final int status = response.getStatus();
+
+        assertThat(status, is(304));
+
+        verify(mockKubevirtNodeAdminService);
+    }
+}
diff --git a/apps/kubevirt-node/app/src/test/resources/org/onosproject/kubevirtnode/web/kubevirt-worker-node.json b/apps/kubevirt-node/app/src/test/resources/org/onosproject/kubevirtnode/web/kubevirt-worker-node.json
new file mode 100644
index 0000000..ddda185
--- /dev/null
+++ b/apps/kubevirt-node/app/src/test/resources/org/onosproject/kubevirtnode/web/kubevirt-worker-node.json
@@ -0,0 +1,12 @@
+{
+  "nodes" : [
+    {
+      "hostname" : "worker-node",
+      "type" : "WORKER",
+      "managementIp" : "10.134.231.32",
+      "dataIp" : "10.134.34.224",
+      "nodeIp" : "30.30.30.3",
+      "integrationBridge" : "of:00000000000000a2"
+    }
+  ]
+}
\ No newline at end of file