[ONOS-7902] Add default implementation of k8s node with unit tests

Change-Id: I283967ae14dc7f38e749d7407e4bec698536c18b
diff --git a/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/Constants.java b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/Constants.java
new file mode 100644
index 0000000..0cded63
--- /dev/null
+++ b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/Constants.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019-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.k8snode.api;
+
+/**
+ * Provides constants used in Kubernetes node services.
+ */
+public final class Constants {
+
+    private Constants() {
+    }
+
+    public static final String INTEGRATION_BRIDGE = "br-int";
+    public static final String VXLAN_TUNNEL = "vxlan";
+    public static final String GRE_TUNNEL = "gre";
+    public static final String GENEVE_TUNNEL = "geneve";
+
+    public static final String VXLAN = "vxlan";
+    public static final String GRE = "gre";
+    public static final String GENEVE = "geneve";
+}
diff --git a/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/DefaultK8sNode.java b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/DefaultK8sNode.java
new file mode 100644
index 0000000..60c02b4
--- /dev/null
+++ b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/DefaultK8sNode.java
@@ -0,0 +1,270 @@
+/*
+ * Copyright 2019-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.k8snode.api;
+
+import com.google.common.base.MoreObjects;
+import org.onlab.osgi.DefaultServiceDirectory;
+import org.onlab.packet.IpAddress;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Port;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.device.DeviceService;
+
+import java.util.Objects;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static org.onosproject.k8snode.api.Constants.GENEVE_TUNNEL;
+import static org.onosproject.k8snode.api.Constants.GRE_TUNNEL;
+import static org.onosproject.k8snode.api.Constants.VXLAN_TUNNEL;
+import static org.onosproject.net.AnnotationKeys.PORT_NAME;
+
+/**
+ * Representation of a kubernetes node.
+ */
+public class DefaultK8sNode implements K8sNode {
+
+    private final String hostname;
+    private final Type type;
+    private final DeviceId intgBridge;
+    private final IpAddress managementIp;
+    private final IpAddress dataIp;
+    private final K8sNodeState state;
+
+    private static final String NOT_NULL_MSG = "Node % cannot be null";
+
+    private static final String OVSDB = "ovsdb:";
+
+    /**
+     * A default constructor of kubernetes Node.
+     *
+     * @param hostname          hostname
+     * @param type              node type
+     * @param intgBridge        integration bridge
+     * @param managementIp      management IP address
+     * @param dataIp            data IP address
+     * @param state             node state
+     */
+    protected DefaultK8sNode(String hostname, Type type, DeviceId intgBridge,
+                             IpAddress managementIp, IpAddress dataIp, K8sNodeState state) {
+        this.hostname = hostname;
+        this.type = type;
+        this.intgBridge = intgBridge;
+        this.managementIp = managementIp;
+        this.dataIp = dataIp;
+        this.state = state;
+    }
+
+    @Override
+    public String hostname() {
+        return hostname;
+    }
+
+    @Override
+    public Type type() {
+        return type;
+    }
+
+    @Override
+    public DeviceId ovsdb() {
+        return DeviceId.deviceId(OVSDB + managementIp().toString());
+    }
+
+    @Override
+    public DeviceId intgBridge() {
+        return intgBridge;
+    }
+
+    @Override
+    public IpAddress managementIp() {
+        return managementIp;
+    }
+
+    @Override
+    public IpAddress dataIp() {
+        return dataIp;
+    }
+
+    @Override
+    public K8sNodeState state() {
+        return state;
+    }
+
+    @Override
+    public K8sNode updateState(K8sNodeState newState) {
+        return new Builder()
+                .hostname(hostname)
+                .type(type)
+                .intgBridge(intgBridge)
+                .managementIp(managementIp)
+                .dataIp(dataIp)
+                .state(newState)
+                .build();
+    }
+
+    @Override
+    public PortNumber grePortNum() {
+        return tunnelPortNum(GRE_TUNNEL);
+    }
+
+    @Override
+    public PortNumber vxlanPortNum() {
+        return tunnelPortNum(VXLAN_TUNNEL);
+    }
+
+    @Override
+    public PortNumber genevePortNum() {
+        return tunnelPortNum(GENEVE_TUNNEL);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj instanceof DefaultK8sNode) {
+            DefaultK8sNode that = (DefaultK8sNode) obj;
+
+            return hostname.equals(that.hostname) &&
+                    type == that.type &&
+                    intgBridge.equals(that.intgBridge) &&
+                    managementIp.equals(that.managementIp) &&
+                    dataIp.equals(that.dataIp) &&
+                    state == that.state;
+        }
+
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(hostname, type, intgBridge, managementIp, dataIp, state);
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("hostname", hostname)
+                .add("type", type)
+                .add("intgBridge", intgBridge)
+                .add("managementIp", managementIp)
+                .add("dataIp", dataIp)
+                .add("state", state)
+                .toString();
+    }
+
+    private PortNumber tunnelPortNum(String tunnelType) {
+        if (dataIp == null) {
+            return null;
+        }
+        DeviceService deviceService = DefaultServiceDirectory.getService(DeviceService.class);
+        Port port = deviceService.getPorts(intgBridge).stream()
+                .filter(p -> p.isEnabled() &&
+                        Objects.equals(p.annotations().value(PORT_NAME), tunnelType))
+                .findAny().orElse(null);
+        return port != null ? port.number() : null;
+    }
+
+    /**
+     * Returns new builder instance.
+     *
+     * @return kubernetes node builder
+     */
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    /**
+     * Returns new builder instance with the given node as a default value.
+     *
+     * @param node kubernetes node
+     * @return kubernetes node builder
+     */
+    public static Builder from(K8sNode node) {
+        return new Builder()
+                .hostname(node.hostname())
+                .type(node.type())
+                .intgBridge(node.intgBridge())
+                .managementIp(node.managementIp())
+                .dataIp(node.dataIp())
+                .state(node.state());
+    }
+
+    public static final class Builder implements K8sNode.Builder {
+
+        private String hostname;
+        private Type type;
+        private DeviceId intgBridge;
+        private IpAddress managementIp;
+        private IpAddress dataIp;
+        private K8sNodeState state;
+
+        // private constructor not intended to use from external
+        private Builder() {
+        }
+
+        @Override
+        public K8sNode build() {
+            checkArgument(hostname != null, NOT_NULL_MSG, "hostname");
+            checkArgument(type != null, NOT_NULL_MSG, "type");
+            checkArgument(state != null, NOT_NULL_MSG, "state");
+            checkArgument(managementIp != null, NOT_NULL_MSG, "management IP");
+
+            return new DefaultK8sNode(hostname,
+                    type,
+                    intgBridge,
+                    managementIp,
+                    dataIp,
+                    state);
+        }
+
+        @Override
+        public Builder hostname(String hostname) {
+            this.hostname = hostname;
+            return this;
+        }
+
+        @Override
+        public Builder type(Type type) {
+            this.type = type;
+            return this;
+        }
+
+        @Override
+        public Builder intgBridge(DeviceId deviceId) {
+            this.intgBridge = deviceId;
+            return this;
+        }
+
+        @Override
+        public Builder managementIp(IpAddress managementIp) {
+            this.managementIp = managementIp;
+            return this;
+        }
+
+        @Override
+        public Builder dataIp(IpAddress dataIp) {
+            this.dataIp = dataIp;
+            return this;
+        }
+
+        @Override
+        public Builder state(K8sNodeState state) {
+            this.state = state;
+            return this;
+        }
+    }
+}
diff --git a/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sNode.java b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sNode.java
index 8f307b5..13b1f47 100644
--- a/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sNode.java
+++ b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sNode.java
@@ -89,6 +89,14 @@
     K8sNodeState state();
 
     /**
+     * Returns new kubernetes node instance with given state.
+     *
+     * @param newState updated state
+     * @return updated kubernetes node
+     */
+    K8sNode updateState(K8sNodeState newState);
+
+    /**
      * Returns the GRE tunnel port number.
      *
      * @return GRE port number; null if the GRE tunnel port does not exist
diff --git a/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sNodeEvent.java b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sNodeEvent.java
index 841fe01..e9209184 100644
--- a/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sNodeEvent.java
+++ b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sNodeEvent.java
@@ -59,7 +59,7 @@
      * @param type event type
      * @param subject kubernetes node
      */
-    protected K8sNodeEvent(Type type, K8sNode subject) {
+    public K8sNodeEvent(Type type, K8sNode subject) {
         super(type, subject);
     }
 }
diff --git a/apps/k8s-node/api/src/test/java/org/onosproject/k8snode/api/DefaultK8sNodeTest.java b/apps/k8s-node/api/src/test/java/org/onosproject/k8snode/api/DefaultK8sNodeTest.java
new file mode 100644
index 0000000..d30c798
--- /dev/null
+++ b/apps/k8s-node/api/src/test/java/org/onosproject/k8snode/api/DefaultK8sNodeTest.java
@@ -0,0 +1,202 @@
+/*
+ * Copyright 2019-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.k8snode.api;
+
+import com.google.common.testing.EqualsTester;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.packet.ChassisId;
+import org.onlab.packet.IpAddress;
+import org.onosproject.k8snode.api.K8sNode.Type;
+import org.onosproject.net.DefaultDevice;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.ProviderId;
+
+import static junit.framework.TestCase.assertEquals;
+import static junit.framework.TestCase.assertSame;
+import static org.onosproject.k8snode.api.K8sNode.Type.MINION;
+import static org.onosproject.k8snode.api.K8sNodeState.COMPLETE;
+import static org.onosproject.k8snode.api.K8sNodeState.DEVICE_CREATED;
+import static org.onosproject.k8snode.api.K8sNodeState.INIT;
+import static org.onosproject.net.Device.Type.SWITCH;
+
+/**
+ * Unit test for DefaultK8sNode.
+ */
+public final class DefaultK8sNodeTest {
+
+    private static final IpAddress TEST_IP = IpAddress.valueOf("10.100.0.3");
+
+    private static final String HOSTNAME_1 = "hostname_1";
+    private static final String HOSTNAME_2 = "hostname_2";
+    private static final Device DEVICE_1 = createDevice(1);
+    private static final Device DEVICE_2 = createDevice(2);
+
+    private static final IpAddress MANAGEMENT_IP = IpAddress.valueOf("10.10.10.10");
+    private static final IpAddress DATA_IP = IpAddress.valueOf("20.20.20.20");
+
+    private K8sNode refNode;
+
+    private static final K8sNode K8S_NODE_1 = createNode(
+            HOSTNAME_1,
+            MINION,
+            DEVICE_1,
+            TEST_IP,
+            INIT);
+    private static final K8sNode K8S_NODE_2 = createNode(
+            HOSTNAME_1,
+            MINION,
+            DEVICE_1,
+            TEST_IP,
+            INIT);
+    private static final K8sNode K8S_NODE_3 = createNode(
+            HOSTNAME_2,
+            MINION,
+            DEVICE_2,
+            TEST_IP,
+            INIT);
+
+    /**
+     * Initial setup for this unit test.
+     */
+    @Before
+    public void setUp() {
+        refNode = DefaultK8sNode.builder()
+                .hostname(HOSTNAME_1)
+                .type(MINION)
+                .managementIp(MANAGEMENT_IP)
+                .dataIp(DATA_IP)
+                .intgBridge(DEVICE_1.id())
+                .state(COMPLETE)
+                .build();
+    }
+
+    /**
+     * Checks equals method works as expected.
+     */
+    @Test
+    public void testEquality() {
+        new EqualsTester().addEqualityGroup(K8S_NODE_1, K8S_NODE_2)
+                .addEqualityGroup(K8S_NODE_3)
+                .testEquals();
+    }
+
+    /**
+     * Test object construction.
+     */
+    @Test
+    public void testConstruction() {
+        checkCommonProperties(refNode);
+        assertSame(refNode.state(), COMPLETE);
+        assertEquals(refNode.intgBridge(), DEVICE_1.id());
+    }
+
+    /**
+     * Checks the functionality of update state method.
+     */
+    @Test
+    public void testUpdateState() {
+        K8sNode updatedNode = refNode.updateState(DEVICE_CREATED);
+
+        checkCommonProperties(updatedNode);
+        assertSame(updatedNode.state(), DEVICE_CREATED);
+    }
+
+    /**
+     * Checks the functionality of from method.
+     */
+    @Test
+    public void testFrom() {
+        K8sNode updatedNode = DefaultK8sNode.from(refNode).build();
+
+        assertEquals(updatedNode, refNode);
+    }
+
+    /**
+     * Checks building a node without hostname fails with proper exception.
+     */
+    @Test(expected = IllegalArgumentException.class)
+    public void testBuildWithoutHostname() {
+        DefaultK8sNode.builder()
+                .type(MINION)
+                .intgBridge(DEVICE_1.id())
+                .managementIp(TEST_IP)
+                .dataIp(TEST_IP)
+                .state(INIT)
+                .build();
+    }
+
+    /**
+     * Checks building a node without type fails with proper exception.
+     */
+    @Test(expected = IllegalArgumentException.class)
+    public void testBuildWithoutType() {
+        DefaultK8sNode.builder()
+                .hostname(HOSTNAME_1)
+                .intgBridge(DEVICE_1.id())
+                .managementIp(TEST_IP)
+                .dataIp(TEST_IP)
+                .state(INIT)
+                .build();
+    }
+
+    /**
+     * Checks building a node without management IP address fails with
+     * proper exception.
+     */
+    @Test(expected = IllegalArgumentException.class)
+    public void testBuildWithoutManagementIp() {
+        DefaultK8sNode.builder()
+                .hostname(HOSTNAME_1)
+                .type(MINION)
+                .intgBridge(DEVICE_1.id())
+                .dataIp(TEST_IP)
+                .state(INIT)
+                .build();
+    }
+
+    private void checkCommonProperties(K8sNode node) {
+        assertEquals(node.hostname(), HOSTNAME_1);
+        assertEquals(node.type(), MINION);
+        assertEquals(node.managementIp(), MANAGEMENT_IP);
+        assertEquals(node.dataIp(), DATA_IP);
+    }
+
+    private static Device createDevice(long devIdNum) {
+        return new DefaultDevice(new ProviderId("of", "foo"),
+                DeviceId.deviceId(String.format("of:%016d", devIdNum)),
+                SWITCH,
+                "manufacturer",
+                "hwVersion",
+                "swVersion",
+                "serialNumber",
+                new ChassisId(1));
+    }
+
+    private static K8sNode createNode(String hostname, Type type,
+                                      Device intgBridge, IpAddress ipAddr,
+                                      K8sNodeState state) {
+        return DefaultK8sNode.builder()
+                .hostname(hostname)
+                .type(type)
+                .intgBridge(intgBridge.id())
+                .managementIp(ipAddr)
+                .dataIp(ipAddr)
+                .state(state)
+                .build();
+    }
+}
diff --git a/apps/k8s-node/app/BUILD b/apps/k8s-node/app/BUILD
index 90dc6e9..fd859b9 100644
--- a/apps/k8s-node/app/BUILD
+++ b/apps/k8s-node/app/BUILD
@@ -3,9 +3,10 @@
     "//apps/k8s-node/api:onos-apps-k8s-node-api",
 ]
 
-TEST_DEPS = TEST_ADAPTERS + [
+TEST_DEPS = TEST_ADAPTERS + TEST_REST + [
     "//core/api:onos-api-tests",
     "//core/common:onos-core-common-tests",
+    "//web/api:onos-rest-tests",
 ]
 
 osgi_jar_with_tests(
diff --git a/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/codec/K8sNodeCodec.java b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/codec/K8sNodeCodec.java
new file mode 100644
index 0000000..e07ad6c
--- /dev/null
+++ b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/codec/K8sNodeCodec.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2019-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.k8snode.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onlab.packet.IpAddress;
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.k8snode.api.DefaultK8sNode;
+import org.onosproject.k8snode.api.K8sNode;
+import org.onosproject.k8snode.api.K8sNodeState;
+import org.onosproject.net.DeviceId;
+import org.slf4j.Logger;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.onlab.util.Tools.nullIsIllegal;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Kubernetes node codec used for serializing and de-serializing JSON string.
+ */
+public final class K8sNodeCodec extends JsonCodec<K8sNode> {
+
+    private final Logger log = getLogger(getClass());
+
+    private static final String HOSTNAME = "hostname";
+    private static final String TYPE = "type";
+    private static final String MANAGEMENT_IP = "managementIp";
+    private static final String DATA_IP = "dataIp";
+    private static final String INTEGRATION_BRIDGE = "integrationBridge";
+    private static final String STATE = "state";
+
+    private static final String MISSING_MESSAGE = " is required in K8sNode";
+
+    @Override
+    public ObjectNode encode(K8sNode node, CodecContext context) {
+        checkNotNull(node, "Kubernetes node cannot be null");
+
+        ObjectNode result = context.mapper().createObjectNode()
+                .put(HOSTNAME, node.hostname())
+                .put(TYPE, node.type().name())
+                .put(STATE, node.state().name())
+                .put(MANAGEMENT_IP, node.managementIp().toString());
+
+        if (node.intgBridge() != null) {
+            result.put(INTEGRATION_BRIDGE, node.intgBridge().toString());
+        }
+
+        if (node.dataIp() != null) {
+            result.put(DATA_IP, node.dataIp().toString());
+        }
+
+        return result;
+    }
+
+    @Override
+    public K8sNode decode(ObjectNode json, CodecContext context) {
+        if (json == null || !json.isObject()) {
+            return null;
+        }
+
+        String hostname = nullIsIllegal(json.get(HOSTNAME).asText(),
+                HOSTNAME + MISSING_MESSAGE);
+        String type = nullIsIllegal(json.get(TYPE).asText(),
+                TYPE + MISSING_MESSAGE);
+        String mIp = nullIsIllegal(json.get(MANAGEMENT_IP).asText(),
+                MANAGEMENT_IP + MISSING_MESSAGE);
+
+        DefaultK8sNode.Builder nodeBuilder = DefaultK8sNode.builder()
+                .hostname(hostname)
+                .type(K8sNode.Type.valueOf(type))
+                .state(K8sNodeState.INIT)
+                .managementIp(IpAddress.valueOf(mIp));
+
+        if (json.get(DATA_IP) != null) {
+            nodeBuilder.dataIp(IpAddress.valueOf(json.get(DATA_IP).asText()));
+        }
+
+        JsonNode intBridgeJson = json.get(INTEGRATION_BRIDGE);
+        if (intBridgeJson != null) {
+            nodeBuilder.intgBridge(DeviceId.deviceId(intBridgeJson.asText()));
+        }
+
+        log.trace("node is {}", nodeBuilder.build().toString());
+
+        return nodeBuilder.build();
+    }
+}
diff --git a/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/DistributedK8sNodeStore.java b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/DistributedK8sNodeStore.java
new file mode 100644
index 0000000..15d2697
--- /dev/null
+++ b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/DistributedK8sNodeStore.java
@@ -0,0 +1,201 @@
+/*
+ * Copyright 2019-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.k8snode.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.k8snode.api.DefaultK8sNode;
+import org.onosproject.k8snode.api.K8sNode;
+import org.onosproject.k8snode.api.K8sNodeEvent;
+import org.onosproject.k8snode.api.K8sNodeState;
+import org.onosproject.k8snode.api.K8sNodeStore;
+import org.onosproject.k8snode.api.K8sNodeStoreDelegate;
+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.k8snode.api.K8sNodeEvent.Type.K8S_NODE_COMPLETE;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_CREATED;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_INCOMPLETE;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_REMOVED;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_UPDATED;
+import static org.onosproject.k8snode.api.K8sNodeState.COMPLETE;
+import static org.onosproject.k8snode.api.K8sNodeState.INCOMPLETE;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Implementation of kubernetes node store using consistent map.
+ */
+@Component(immediate = true, service = K8sNodeStore.class)
+public class DistributedK8sNodeStore
+        extends AbstractStore<K8sNodeEvent, K8sNodeStoreDelegate>
+        implements K8sNodeStore {
+
+    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.k8snode";
+
+    private static final KryoNamespace
+            SERIALIZER_K8S_NODE = KryoNamespace.newBuilder()
+            .register(KryoNamespaces.API)
+            .register(K8sNode.class)
+            .register(DefaultK8sNode.class)
+            .register(K8sNode.Type.class)
+            .register(K8sNodeState.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, K8sNode> nodeMapListener =
+            new K8sNodeMapListener();
+    private ConsistentMap<String, K8sNode> nodeStore;
+
+    @Activate
+    protected void activate() {
+        ApplicationId appId = coreService.registerApplication(APP_ID);
+        nodeStore = storageService.<String, K8sNode>consistentMapBuilder()
+                .withSerializer(Serializer.using(SERIALIZER_K8S_NODE))
+                .withName("k8s-nodestore")
+                .withApplicationId(appId)
+                .build();
+        nodeStore.addListener(nodeMapListener);
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        nodeStore.removeListener(nodeMapListener);
+        eventExecutor.shutdown();
+        log.info("Stopped");
+    }
+
+    @Override
+    public void createNode(K8sNode node) {
+        nodeStore.compute(node.hostname(), (hostname, existing) -> {
+            final String error = node.hostname() + ERR_DUPLICATE;
+            checkArgument(existing == null, error);
+            return node;
+        });
+    }
+
+    @Override
+    public void updateNode(K8sNode node) {
+        nodeStore.compute(node.hostname(), (hostname, existing) -> {
+            final String error = node.hostname() + ERR_NOT_FOUND;
+            checkArgument(existing != null, error);
+            return node;
+        });
+    }
+
+    @Override
+    public K8sNode removeNode(String hostname) {
+        Versioned<K8sNode> node = nodeStore.remove(hostname);
+        if (node == null) {
+            final String error = hostname + ERR_NOT_FOUND;
+            throw new IllegalArgumentException(error);
+        }
+        return node.value();
+    }
+
+    @Override
+    public Set<K8sNode> nodes() {
+        return ImmutableSet.copyOf(nodeStore.asJavaMap().values());
+    }
+
+    @Override
+    public K8sNode node(String hostname) {
+        return nodeStore.asJavaMap().get(hostname);
+    }
+
+    private class K8sNodeMapListener
+            implements MapEventListener<String, K8sNode> {
+
+        @Override
+        public void event(MapEvent<String, K8sNode> event) {
+
+            switch (event.type()) {
+                case INSERT:
+                    log.debug("Kubernetes node created {}", event.newValue());
+                    eventExecutor.execute(() ->
+                            notifyDelegate(new K8sNodeEvent(
+                                    K8S_NODE_CREATED, event.newValue().value()
+                    )));
+                    break;
+                case UPDATE:
+                    log.debug("Kubernetes node updated {}", event.newValue());
+                    eventExecutor.execute(() -> {
+                        notifyDelegate(new K8sNodeEvent(
+                                K8S_NODE_UPDATED,
+                                event.newValue().value()
+                        ));
+
+                        if (event.newValue().value().state() == COMPLETE) {
+                            notifyDelegate(new K8sNodeEvent(
+                                    K8S_NODE_COMPLETE,
+                                    event.newValue().value()
+                            ));
+                        } else if (event.newValue().value().state() == INCOMPLETE) {
+                            notifyDelegate(new K8sNodeEvent(
+                                    K8S_NODE_INCOMPLETE,
+                                    event.newValue().value()
+                            ));
+                        }
+                    });
+                    break;
+                case REMOVE:
+                    log.debug("Kubernetes node removed {}", event.oldValue());
+                    eventExecutor.execute(() ->
+                            notifyDelegate(new K8sNodeEvent(
+                                    K8S_NODE_REMOVED, event.oldValue().value()
+                            )));
+                    break;
+                default:
+                    // do nothing
+                    break;
+            }
+        }
+    }
+}
diff --git a/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/K8sNodeManager.java b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/K8sNodeManager.java
new file mode 100644
index 0000000..d80ef21
--- /dev/null
+++ b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/K8sNodeManager.java
@@ -0,0 +1,219 @@
+/*
+ * Copyright 2019-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.k8snode.impl;
+
+import com.google.common.base.Strings;
+import com.google.common.collect.ImmutableSet;
+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.k8snode.api.K8sNode;
+import org.onosproject.k8snode.api.K8sNode.Type;
+import org.onosproject.k8snode.api.K8sNodeAdminService;
+import org.onosproject.k8snode.api.K8sNodeEvent;
+import org.onosproject.k8snode.api.K8sNodeListener;
+import org.onosproject.k8snode.api.K8sNodeService;
+import org.onosproject.k8snode.api.K8sNodeStore;
+import org.onosproject.k8snode.api.K8sNodeStoreDelegate;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceService;
+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.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.k8snode.api.K8sNodeState.COMPLETE;
+import static org.onosproject.k8snode.impl.OsgiPropertyConstants.OVSDB_PORT;
+import static org.onosproject.k8snode.impl.OsgiPropertyConstants.OVSDB_PORT_NUM_DEFAULT;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Service administering the inventory of kubernetes nodes.
+ */
+@Component(
+        immediate = true,
+        service = { K8sNodeService.class, K8sNodeAdminService.class },
+        property = {
+                OVSDB_PORT + ":Integer=" + OVSDB_PORT_NUM_DEFAULT
+        }
+)
+public class K8sNodeManager
+        extends ListenerRegistry<K8sNodeEvent, K8sNodeListener>
+        implements K8sNodeService, K8sNodeAdminService {
+
+    private final Logger log = getLogger(getClass());
+
+    private static final String MSG_NODE = "Kubernetes 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 ERR_NULL_NODE = "Kubernetes node cannot be null";
+    private static final String ERR_NULL_HOSTNAME = "Kubernetes node hostname cannot be null";
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected K8sNodeStore 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 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 K8sNodeStoreDelegate delegate = new K8sNodeManager.InternalNodeStoreDelegate();
+
+    private ApplicationId appId;
+
+    @Activate
+    protected void activate() {
+        appId = coreService.registerApplication(APP_ID);
+        nodeStore.setDelegate(delegate);
+
+        leadershipService.runForLeadership(appId.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(K8sNode node) {
+        checkNotNull(node, ERR_NULL_NODE);
+        nodeStore.createNode(node);
+        log.info(String.format(MSG_NODE, node.hostname(), MSG_CREATED));
+    }
+
+    @Override
+    public void updateNode(K8sNode node) {
+        checkNotNull(node, ERR_NULL_NODE);
+        nodeStore.updateNode(node);
+        log.info(String.format(MSG_NODE, node.hostname(), MSG_UPDATED));
+    }
+
+    @Override
+    public K8sNode removeNode(String hostname) {
+        checkArgument(!Strings.isNullOrEmpty(hostname), ERR_NULL_HOSTNAME);
+        K8sNode node = nodeStore.removeNode(hostname);
+        log.info(String.format(MSG_NODE, hostname, MSG_REMOVED));
+        return node;
+    }
+
+    @Override
+    public Set<K8sNode> nodes() {
+        return nodeStore.nodes();
+    }
+
+    @Override
+    public Set<K8sNode> nodes(Type type) {
+        Set<K8sNode> nodes = nodeStore.nodes().stream()
+                .filter(node -> Objects.equals(node.type(), type))
+                .collect(Collectors.toSet());
+        return ImmutableSet.copyOf(nodes);
+    }
+
+    @Override
+    public Set<K8sNode> completeNodes() {
+        Set<K8sNode> nodes = nodeStore.nodes().stream()
+                .filter(node -> node.state() == COMPLETE)
+                .collect(Collectors.toSet());
+        return ImmutableSet.copyOf(nodes);
+    }
+
+    @Override
+    public Set<K8sNode> completeNodes(Type type) {
+        Set<K8sNode> nodes = nodeStore.nodes().stream()
+                .filter(node -> node.type() == type &&
+                        node.state() == COMPLETE)
+                .collect(Collectors.toSet());
+        return ImmutableSet.copyOf(nodes);
+    }
+
+    @Override
+    public K8sNode node(String hostname) {
+        return nodeStore.node(hostname);
+    }
+
+    @Override
+    public K8sNode node(DeviceId deviceId) {
+        return nodeStore.nodes().stream()
+                .filter(node -> Objects.equals(node.intgBridge(), deviceId) ||
+                        Objects.equals(node.ovsdb(), deviceId))
+                .findFirst().orElse(null);
+    }
+
+    private class InternalNodeStoreDelegate implements K8sNodeStoreDelegate {
+
+        @Override
+        public void notify(K8sNodeEvent event) {
+            if (event != null) {
+                log.trace("send kubernetes node event {}", event);
+                process(event);
+            }
+        }
+    }
+}
diff --git a/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/OsgiPropertyConstants.java b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/OsgiPropertyConstants.java
new file mode 100644
index 0000000..eed9d93
--- /dev/null
+++ b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/impl/OsgiPropertyConstants.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2019-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.k8snode.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/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeCodecRegister.java b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeCodecRegister.java
new file mode 100644
index 0000000..cb283f9
--- /dev/null
+++ b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeCodecRegister.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2019-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.k8snode.web;
+
+import org.onosproject.codec.CodecService;
+import org.onosproject.k8snode.api.K8sNode;
+import org.onosproject.k8snode.codec.K8sNodeCodec;
+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 static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Implementation of the JSON codec brokering service for K8sNode.
+ */
+@Component(immediate = true)
+public class K8sNodeCodecRegister {
+
+    private final Logger log = getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected CodecService codecService;
+
+    @Activate
+    protected void activate() {
+
+        codecService.registerCodec(K8sNode.class, new K8sNodeCodec());
+
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+
+        codecService.unregisterCodec(K8sNode.class);
+
+        log.info("Stopped");
+    }
+}
diff --git a/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeWebApplication.java b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeWebApplication.java
new file mode 100644
index 0000000..7b13666
--- /dev/null
+++ b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeWebApplication.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019-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.k8snode.web;
+
+import org.onlab.rest.AbstractWebApplication;
+
+import java.util.Set;
+
+/**
+ * Kubernetes node REST APIs web application.
+ */
+public class K8sNodeWebApplication extends AbstractWebApplication {
+    @Override
+    public Set<Class<?>> getClasses() {
+        return getClasses(K8sNodeWebResource.class);
+    }
+}
diff --git a/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeWebResource.java b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeWebResource.java
new file mode 100644
index 0000000..0367e0f
--- /dev/null
+++ b/apps/k8s-node/app/src/main/java/org/onosproject/k8snode/web/K8sNodeWebResource.java
@@ -0,0 +1,178 @@
+/*
+ * Copyright 2019-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.k8snode.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.k8snode.api.K8sNode;
+import org.onosproject.k8snode.api.K8sNodeAdminService;
+import org.onosproject.rest.AbstractWebResource;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.ws.rs.Consumes;
+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 kubernetes node config.
+ */
+
+@Path("configure")
+public class K8sNodeWebResource 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 DELETE = "DELETE";
+
+    private static final String HOST_NAME = "hostname";
+    private static final String ERROR_MESSAGE = " cannot be null";
+
+    private final K8sNodeAdminService adminService = get(K8sNodeAdminService.class);
+
+    @Context
+    private UriInfo uriInfo;
+
+    /**
+     * Creates a set of kubernetes nodes' config from the JSON input stream.
+     *
+     * @param input kubernetes nodes JSON input stream
+     * @return 201 CREATED if the JSON is correct, 400 BAD_REQUEST if the JSON
+     * is malformed
+     * @onos.rsModel K8sNode
+     */
+    @POST
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response createNodes(InputStream input) {
+        log.trace(String.format(MESSAGE_NODE, CREATE));
+
+        readNodeConfiguration(input).forEach(node -> {
+            K8sNode existing = adminService.node(node.hostname());
+            if (existing == null) {
+                adminService.createNode(node);
+            }
+        });
+
+        UriBuilder locationBuilder = uriInfo.getBaseUriBuilder()
+                .path(NODES)
+                .path(NODE_ID);
+
+        return created(locationBuilder.build()).build();
+    }
+
+    /**
+     * Updates a set of kubernetes nodes' config from the JSON input stream.
+     *
+     * @param input kubernetes nodes JSON input stream
+     * @return 200 OK with the updated kubernetes node's config, 400 BAD_REQUEST
+     * if the JSON is malformed, and 304 NOT_MODIFIED without the updated config
+     * @onos.rsModel K8sNode
+     */
+    @PUT
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response updateNodes(InputStream input) {
+        log.trace(String.format(MESSAGE_NODE, UPDATE));
+
+        Set<K8sNode> nodes = readNodeConfiguration(input);
+        for (K8sNode node: nodes) {
+            K8sNode existing = adminService.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)) {
+                adminService.updateNode(node);
+            }
+        }
+
+        return Response.ok().build();
+    }
+
+    /**
+     * Removes a set of kubernetes nodes' config from the JSON input stream.
+     *
+     * @param hostname host name contained in kubernetes nodes configuration
+     * @return 204 NO_CONTENT, 400 BAD_REQUEST if the JSON is malformed, and
+     * 304 NOT_MODIFIED without the updated config
+     * @onos.rsModel K8sNode
+     */
+    @javax.ws.rs.DELETE
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Path("{hostname}")
+    public Response deleteNodes(@PathParam("hostname") String hostname) {
+        log.trace(String.format(MESSAGE_NODE, DELETE));
+
+        K8sNode existing =
+                adminService.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 {
+            adminService.removeNode(hostname);
+        }
+
+        return Response.noContent().build();
+    }
+
+    private Set<K8sNode> readNodeConfiguration(InputStream input) {
+        Set<K8sNode> 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();
+                    K8sNode k8sNode =
+                            codec(K8sNode.class).decode(objectNode, this);
+
+                    nodeSet.add(k8sNode);
+                } 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/k8s-node/app/src/main/resources/definitions/K8sNode.json b/apps/k8s-node/app/src/main/resources/definitions/K8sNode.json
new file mode 100644
index 0000000..34823d2
--- /dev/null
+++ b/apps/k8s-node/app/src/main/resources/definitions/K8sNode.json
@@ -0,0 +1,43 @@
+{
+  "type": "object",
+  "required": [
+    "nodes"
+  ],
+  "properties": {
+    "nodes": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "required": [
+          "hostname",
+          "type",
+          "managementIp",
+          "dataIp",
+          "integrationBridge",
+        ],
+        "properties": {
+          "hostname": {
+            "type": "string",
+            "example": "host1"
+          },
+          "type": {
+            "type": "string",
+            "example": "GATEWAY"
+          },
+          "managementIp": {
+            "type": "string",
+            "example": "10.10.10.1"
+          },
+          "dataIp": {
+            "type": "string",
+            "example": "20.20.20.2"
+          },
+          "integrationBridge": {
+            "type": "string",
+            "example": "of:0000000000000001"
+          }
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/apps/k8s-node/app/src/main/webapp/WEB-INF/web.xml b/apps/k8s-node/app/src/main/webapp/WEB-INF/web.xml
new file mode 100644
index 0000000..1896e3f
--- /dev/null
+++ b/apps/k8s-node/app/src/main/webapp/WEB-INF/web.xml
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2019-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.
+  -->
+<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://java.sun.com/xml/ns/javaee"
+         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
+         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
+         id="ONOS" version="2.5">
+    <display-name>Kubernetes Node REST API v1.0</display-name>
+
+    <security-constraint>
+        <web-resource-collection>
+            <web-resource-name>Secured</web-resource-name>
+            <url-pattern>/*</url-pattern>
+        </web-resource-collection>
+        <auth-constraint>
+            <role-name>admin</role-name>
+            <role-name>viewer</role-name>
+        </auth-constraint>
+    </security-constraint>
+
+    <security-role>
+        <role-name>admin</role-name>
+        <role-name>viewer</role-name>
+    </security-role>
+
+    <login-config>
+        <auth-method>BASIC</auth-method>
+        <realm-name>karaf</realm-name>
+    </login-config>
+
+    <servlet>
+        <servlet-name>JAX-RS Service</servlet-name>
+        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
+        <init-param>
+            <param-name>javax.ws.rs.Application</param-name>
+            <param-value>org.onosproject.k8snode.web.K8sNodeWebApplication</param-value>
+        </init-param>
+        <load-on-startup>1</load-on-startup>
+    </servlet>
+
+    <servlet-mapping>
+        <servlet-name>JAX-RS Service</servlet-name>
+        <url-pattern>/*</url-pattern>
+    </servlet-mapping>
+</web-app>
diff --git a/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/codec/K8sNodeCodecTest.java b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/codec/K8sNodeCodecTest.java
new file mode 100644
index 0000000..7f156e8
--- /dev/null
+++ b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/codec/K8sNodeCodecTest.java
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2019-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.k8snode.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.packet.IpAddress;
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.codec.impl.CodecManager;
+import org.onosproject.core.CoreService;
+import org.onosproject.k8snode.api.DefaultK8sNode;
+import org.onosproject.k8snode.api.K8sNode;
+import org.onosproject.k8snode.api.K8sNodeState;
+import org.onosproject.net.DeviceId;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Map;
+
+import static junit.framework.TestCase.assertEquals;
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.replay;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.onosproject.k8snode.codec.K8sNodeJsonMatcher.matchesK8sNode;
+import static org.onosproject.net.NetTestTools.APP_ID;
+
+/**
+ * Unit tests for Kubernetes Node codec.
+ */
+public class K8sNodeCodecTest {
+
+    MockCodecContext context;
+
+    JsonCodec<K8sNode> k8sNodeCodec;
+
+    final CoreService mockCoreService = createMock(CoreService.class);
+    private static final String REST_APP_ID = "org.onosproject.rest";
+
+    /**
+     * Initial setup for this unit test.
+     */
+    @Before
+    public void setUp() {
+        context = new MockCodecContext();
+        k8sNodeCodec = new K8sNodeCodec();
+
+        assertThat(k8sNodeCodec, notNullValue());
+
+        expect(mockCoreService.registerApplication(REST_APP_ID))
+                .andReturn(APP_ID).anyTimes();
+        replay(mockCoreService);
+        context.registerService(CoreService.class, mockCoreService);
+    }
+
+    /**
+     * Tests the kubernetes minion node encoding.
+     */
+    @Test
+    public void testK8sMinionNodeEncode() {
+        K8sNode node = DefaultK8sNode.builder()
+                .hostname("minion")
+                .type(K8sNode.Type.MINION)
+                .state(K8sNodeState.INIT)
+                .managementIp(IpAddress.valueOf("10.10.10.1"))
+                .dataIp(IpAddress.valueOf("20.20.20.2"))
+                .intgBridge(DeviceId.deviceId("kbr-int"))
+                .build();
+
+        ObjectNode nodeJson = k8sNodeCodec.encode(node, context);
+        assertThat(nodeJson, matchesK8sNode(node));
+    }
+
+    /**
+     * Tests the kubernetes minion node decoding.
+     *
+     * @throws IOException IO exception
+     */
+    @Test
+    public void testK8sMinionNodeDecode() throws IOException {
+        K8sNode node = getK8sNode("K8sMinionNode.json");
+
+        assertEquals("minion", node.hostname());
+        assertEquals("MINION", node.type().name());
+        assertEquals("172.16.130.4", node.managementIp().toString());
+        assertEquals("172.16.130.4", node.dataIp().toString());
+        assertEquals("of:00000000000000a1", node.intgBridge().toString());
+    }
+
+    private K8sNode getK8sNode(String resourceName) throws IOException {
+        InputStream jsonStream = K8sNodeCodecTest.class.getResourceAsStream(resourceName);
+        JsonNode json = context.mapper().readTree(jsonStream);
+        assertThat(json, notNullValue());
+        K8sNode node = k8sNodeCodec.decode((ObjectNode) json, context);
+        assertThat(node, notNullValue());
+        return node;
+    }
+
+    private class MockCodecContext implements CodecContext {
+        private final ObjectMapper mapper = new ObjectMapper();
+        private final CodecManager manager = new CodecManager();
+        private final Map<Class<?>, Object> services = new HashMap<>();
+
+        /**
+         * Constructs a new mock codec context.
+         */
+        public MockCodecContext() {
+            manager.activate();
+        }
+
+        @Override
+        public ObjectMapper mapper() {
+            return mapper;
+        }
+
+        @Override
+        @SuppressWarnings("unchecked")
+        public <T> JsonCodec<T> codec(Class<T> entityClass) {
+            if (entityClass == K8sNode.class) {
+                return (JsonCodec<T>) k8sNodeCodec;
+            }
+            return manager.getCodec(entityClass);
+        }
+
+        @SuppressWarnings("unchecked")
+        @Override
+        public <T> T getService(Class<T> serviceClass) {
+            return (T) services.get(serviceClass);
+        }
+
+        // for registering mock services
+        public <T> void registerService(Class<T> serviceClass, T impl) {
+            services.put(serviceClass, impl);
+        }
+    }
+}
diff --git a/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/codec/K8sNodeJsonMatcher.java b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/codec/K8sNodeJsonMatcher.java
new file mode 100644
index 0000000..58b15d2
--- /dev/null
+++ b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/codec/K8sNodeJsonMatcher.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2019-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.k8snode.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.hamcrest.Description;
+import org.hamcrest.TypeSafeDiagnosingMatcher;
+import org.onosproject.k8snode.api.K8sNode;
+
+/**
+ * Hamcrest matcher for kubernetes node.
+ */
+public final class K8sNodeJsonMatcher extends TypeSafeDiagnosingMatcher<JsonNode> {
+
+    private final K8sNode node;
+
+    private static final String HOSTNAME = "hostname";
+    private static final String TYPE = "type";
+    private static final String MANAGEMENT_IP = "managementIp";
+    private static final String DATA_IP = "dataIp";
+    private static final String INTEGRATION_BRIDGE = "integrationBridge";
+    private static final String STATE = "state";
+
+    private K8sNodeJsonMatcher(K8sNode node) {
+        this.node = node;
+    }
+
+    @Override
+    protected boolean matchesSafely(JsonNode jsonNode, Description description) {
+
+        // check hostname
+        String jsonHostname = jsonNode.get(HOSTNAME).asText();
+        String hostname = node.hostname();
+        if (!jsonHostname.equals(hostname)) {
+            description.appendText("hostname was " + jsonHostname);
+            return false;
+        }
+
+        // check type
+        String jsonType = jsonNode.get(TYPE).asText();
+        String type = node.type().name();
+        if (!jsonType.equals(type)) {
+            description.appendText("type was " + jsonType);
+            return false;
+        }
+
+        // check management IP
+        String jsonMgmtIp = jsonNode.get(MANAGEMENT_IP).asText();
+        String mgmtIp = node.managementIp().toString();
+        if (!jsonMgmtIp.equals(mgmtIp)) {
+            description.appendText("management IP was " + jsonMgmtIp);
+            return false;
+        }
+
+        // check integration bridge
+        JsonNode jsonIntgBridge = jsonNode.get(INTEGRATION_BRIDGE);
+        if (jsonIntgBridge != null) {
+            String intgBridge = node.intgBridge().toString();
+            if (!jsonIntgBridge.asText().equals(intgBridge)) {
+                description.appendText("integration bridge was " + jsonIntgBridge);
+                return false;
+            }
+        }
+
+        // check state
+        String jsonState = jsonNode.get(STATE).asText();
+        String state = node.state().name();
+        if (!jsonState.equals(state)) {
+            description.appendText("state was " + jsonState);
+            return false;
+        }
+
+        // check data IP
+        JsonNode jsonDataIp = jsonNode.get(DATA_IP);
+        if (jsonDataIp != null) {
+            String dataIp = node.dataIp().toString();
+            if (!jsonDataIp.asText().equals(dataIp)) {
+                description.appendText("Data IP was " + jsonDataIp.asText());
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    @Override
+    public void describeTo(Description description) {
+        description.appendText(node.toString());
+    }
+
+    /**
+     * Factory to allocate an kubernetes node matcher.
+     *
+     * @param node kubernetes node object we are looking for
+     * @return matcher
+     */
+    public static K8sNodeJsonMatcher matchesK8sNode(K8sNode node) {
+        return new K8sNodeJsonMatcher(node);
+    }
+}
diff --git a/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/impl/K8sNodeManagerTest.java b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/impl/K8sNodeManagerTest.java
new file mode 100644
index 0000000..066647b
--- /dev/null
+++ b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/impl/K8sNodeManagerTest.java
@@ -0,0 +1,334 @@
+/*
+ * Copyright 2019-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.k8snode.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.ChassisId;
+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.k8snode.api.DefaultK8sNode;
+import org.onosproject.k8snode.api.K8sNode;
+import org.onosproject.k8snode.api.K8sNodeEvent;
+import org.onosproject.k8snode.api.K8sNodeListener;
+import org.onosproject.k8snode.api.K8sNodeState;
+import org.onosproject.net.DefaultDevice;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.store.service.TestStorageService;
+
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.onosproject.k8snode.api.K8sNode.Type.MINION;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_COMPLETE;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_CREATED;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_INCOMPLETE;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_REMOVED;
+import static org.onosproject.k8snode.api.K8sNodeEvent.Type.K8S_NODE_UPDATED;
+import static org.onosproject.k8snode.api.K8sNodeState.COMPLETE;
+import static org.onosproject.k8snode.api.K8sNodeState.INCOMPLETE;
+import static org.onosproject.k8snode.api.K8sNodeState.INIT;
+import static org.onosproject.net.Device.Type.SWITCH;
+
+/**
+ * Unit tests for Kubernetes node manager.
+ */
+public class K8sNodeManagerTest {
+
+    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 MINION_1_HOSTNAME = "minion_1";
+    private static final String MINION_2_HOSTNAME = "minion_2";
+    private static final String MINION_3_HOSTNAME = "minion_3";
+
+    private static final Device MINION_1_INTG_DEVICE = createDevice(1);
+    private static final Device MINION_2_INTG_DEVICE = createDevice(2);
+    private static final Device MINION_3_INTG_DEVICE = createDevice(3);
+
+    private static final K8sNode MINION_1 = createNode(
+            MINION_1_HOSTNAME,
+            MINION,
+            MINION_1_INTG_DEVICE,
+            IpAddress.valueOf("10.100.0.1"),
+            INIT
+    );
+    private static final K8sNode MINION_2 = createNode(
+            MINION_2_HOSTNAME,
+            MINION,
+            MINION_2_INTG_DEVICE,
+            IpAddress.valueOf("10.100.0.2"),
+            INIT
+    );
+    private static final K8sNode MINION_3 = createNode(
+            MINION_3_HOSTNAME,
+            MINION,
+            MINION_3_INTG_DEVICE,
+            IpAddress.valueOf("10.100.0.3"),
+            COMPLETE
+    );
+
+    private final TestK8sNodeListener testListener = new TestK8sNodeListener();
+
+    private K8sNodeManager target;
+    private DistributedK8sNodeStore nodeStore;
+
+    /**
+     * Initial setup for this unit test.
+     */
+    @Before
+    public void setUp() {
+        nodeStore = new DistributedK8sNodeStore();
+        TestUtils.setField(nodeStore, "coreService", new TestCoreService());
+        TestUtils.setField(nodeStore, "storageService", new TestStorageService());
+        TestUtils.setField(nodeStore, "eventExecutor", MoreExecutors.newDirectExecutorService());
+        nodeStore.activate();
+
+        nodeStore.createNode(MINION_2);
+        nodeStore.createNode(MINION_3);
+
+        target = new K8sNodeManager();
+        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();
+    }
+
+    /**
+     * Clean up unit test.
+     */
+    @After
+    public void tearDown() {
+        target.removeListener(testListener);
+        target.deactivate();
+        nodeStore.deactivate();
+        nodeStore = null;
+        target = null;
+    }
+
+    /**
+     * Checks if creating and removing a node work well with proper events.
+     */
+    @Test
+    public void testCreateAndRemoveNode() {
+        target.createNode(MINION_1);
+        assertEquals(ERR_SIZE, 3, target.nodes().size());
+        assertNotNull(target.node(MINION_1_HOSTNAME));
+
+        target.removeNode(MINION_1_HOSTNAME);
+        assertEquals(ERR_SIZE, 2, target.nodes().size());
+        assertNull(target.node(MINION_1_HOSTNAME));
+
+        validateEvents(K8S_NODE_CREATED, K8S_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(MINION_1);
+        target.createNode(MINION_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() {
+        K8sNode updated = DefaultK8sNode.from(MINION_2)
+                .dataIp(IpAddress.valueOf("10.200.0.100"))
+                .build();
+        target.updateNode(updated);
+        assertEquals(ERR_NOT_MATCH, updated, target.node(MINION_2_INTG_DEVICE.id()));
+        validateEvents(K8S_NODE_UPDATED);
+    }
+
+    /**
+     * Checks if updating a node state to complete generates proper events.
+     */
+    @Test
+    public void testUpdateNodeStateComplete() {
+        K8sNode updated = DefaultK8sNode.from(MINION_2)
+                .state(COMPLETE)
+                .build();
+        target.updateNode(updated);
+        assertEquals(ERR_NOT_MATCH, updated, target.node(MINION_2_HOSTNAME));
+        validateEvents(K8S_NODE_UPDATED, K8S_NODE_COMPLETE);
+    }
+
+    /**
+     * Checks if updating a node state to incomplete generates proper events.
+     */
+    @Test
+    public void testUpdateNodeStateIncomplete() {
+        K8sNode updated = DefaultK8sNode.from(MINION_3)
+                .state(INCOMPLETE)
+                .build();
+        target.updateNode(updated);
+        assertEquals(ERR_NOT_MATCH, updated, target.node(MINION_3_HOSTNAME));
+        validateEvents(K8S_NODE_UPDATED, K8S_NODE_INCOMPLETE);
+    }
+
+    /**
+     * Checks if updating a null node fails with proper exception.
+     */
+    @Test(expected = NullPointerException.class)
+    public void testUpdateNullNode() {
+        target.updateNode(null);
+    }
+
+    /**
+     * Checks if updating not existing node fails with proper exception.
+     */
+    @Test(expected = IllegalArgumentException.class)
+    public void testUpdateNotExistingNode() {
+        target.updateNode(MINION_1);
+    }
+
+    /**
+     * Checks if getting all nodes method returns correct set of nodes.
+     */
+    @Test
+    public void testGetAllNodes() {
+        assertEquals(ERR_SIZE, 2, target.nodes().size());
+        assertTrue(ERR_NOT_FOUND, target.nodes().contains(MINION_2));
+        assertTrue(ERR_NOT_FOUND, target.nodes().contains(MINION_3));
+    }
+
+    /**
+     * Checks if getting complete nodes method returns correct set of nodes.
+     */
+    @Test
+    public void testGetCompleteNodes() {
+        assertEquals(ERR_SIZE, 1, target.completeNodes().size());
+        assertTrue(ERR_NOT_FOUND, target.completeNodes().contains(MINION_3));
+    }
+
+    /**
+     * Checks if getting nodes by type method returns correct set of nodes.
+     */
+    @Test
+    public void testGetNodesByType() {
+        assertEquals(ERR_SIZE, 2, target.nodes(MINION).size());
+        assertTrue(ERR_NOT_FOUND, target.nodes(MINION).contains(MINION_2));
+        assertTrue(ERR_NOT_FOUND, target.nodes(MINION).contains(MINION_3));
+    }
+
+    /**
+     * Checks if getting a node by hostname returns correct node.
+     */
+    @Test
+    public void testGetNodeByHostname() {
+        assertEquals(ERR_NOT_FOUND, target.node(MINION_2_HOSTNAME), MINION_2);
+        assertEquals(ERR_NOT_FOUND, target.node(MINION_3_HOSTNAME), MINION_3);
+    }
+
+    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 Device createDevice(long devIdNum) {
+        return new DefaultDevice(new ProviderId("of", "foo"),
+                DeviceId.deviceId(String.format("of:%016d", devIdNum)),
+                SWITCH,
+                "manufacturer",
+                "hwVersion",
+                "swVersion",
+                "serialNumber",
+                new ChassisId(1));
+    }
+
+    private static class TestK8sNodeListener implements K8sNodeListener {
+        private List<K8sNodeEvent> events = Lists.newArrayList();
+
+        @Override
+        public void event(K8sNodeEvent event) {
+            events.add(event);
+        }
+    }
+
+    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 {
+
+    }
+
+    private static K8sNode createNode(String hostname, K8sNode.Type type,
+                                      Device intgBridge, IpAddress ipAddr,
+                                      K8sNodeState state) {
+        return DefaultK8sNode.builder()
+                .hostname(hostname)
+                .type(type)
+                .intgBridge(intgBridge.id())
+                .managementIp(ipAddr)
+                .dataIp(ipAddr)
+                .state(state)
+                .build();
+    }
+}
diff --git a/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeCodecRegisterTest.java b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeCodecRegisterTest.java
new file mode 100644
index 0000000..09958bd
--- /dev/null
+++ b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeCodecRegisterTest.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2019-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.k8snode.web;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+import org.junit.Test;
+import org.onlab.junit.TestUtils;
+import org.onosproject.codec.CodecService;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.k8snode.api.K8sNode;
+import org.onosproject.k8snode.codec.K8sNodeCodec;
+
+import java.util.Map;
+import java.util.Set;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+/**
+ * Unit tests for kubernetes node codec register.
+ */
+public final class K8sNodeCodecRegisterTest {
+
+    private K8sNodeCodecRegister register;
+
+    /**
+     * Tests codec register activation and deactivation.
+     */
+    @Test
+    public void testActivateDeactivate() {
+        register = new K8sNodeCodecRegister();
+        CodecService codecService = new TestCodecService();
+
+        TestUtils.setField(register, "codecService", codecService);
+        register.activate();
+
+        assertEquals(K8sNodeCodec.class.getName(),
+                codecService.getCodec(K8sNode.class).getClass().getName());
+
+        register.deactivate();
+
+        assertNull(codecService.getCodec(K8sNode.class));
+    }
+
+    private static class TestCodecService implements CodecService {
+
+        private Map<String, JsonCodec> codecMap = Maps.newConcurrentMap();
+
+        @Override
+        public Set<Class<?>> getCodecs() {
+            return ImmutableSet.of();
+        }
+
+        @Override
+        public <T> JsonCodec<T> getCodec(Class<T> entityClass) {
+            return codecMap.get(entityClass.getName());
+        }
+
+        @Override
+        public <T> void registerCodec(Class<T> entityClass, JsonCodec<T> codec) {
+            codecMap.put(entityClass.getName(), codec);
+        }
+
+        @Override
+        public void unregisterCodec(Class<?> entityClass) {
+            codecMap.remove(entityClass.getName());
+        }
+    }
+}
diff --git a/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeWebResourceTest.java b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeWebResourceTest.java
new file mode 100644
index 0000000..c52f398
--- /dev/null
+++ b/apps/k8s-node/app/src/test/java/org/onosproject/k8snode/web/K8sNodeWebResourceTest.java
@@ -0,0 +1,214 @@
+/*
+ * Copyright 2019-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.k8snode.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.k8snode.api.DefaultK8sNode;
+import org.onosproject.k8snode.api.K8sNode;
+import org.onosproject.k8snode.api.K8sNodeAdminService;
+import org.onosproject.k8snode.api.K8sNodeState;
+import org.onosproject.k8snode.codec.K8sNodeCodec;
+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 Kubernetes node REST API.
+ */
+public class K8sNodeWebResourceTest extends ResourceTest {
+
+    final K8sNodeAdminService mockK8sNodeAdminService = createMock(K8sNodeAdminService.class);
+    private static final String PATH = "configure";
+
+    private K8sNode k8sNode;
+
+    /**
+     * Constructs a kubernetes node resource test instance.
+     */
+    public K8sNodeWebResourceTest() {
+        super(ResourceConfig.forApplicationClass(K8sNodeWebApplication.class));
+    }
+
+    /**
+     * Sets up the global values for all the tests.
+     */
+    @Before
+    public void setUpTest() {
+        final CodecManager codecService = new CodecManager();
+        codecService.activate();
+        codecService.registerCodec(K8sNode.class, new K8sNodeCodec());
+        ServiceDirectory testDirectory =
+                new TestServiceDirectory()
+                .add(K8sNodeAdminService.class, mockK8sNodeAdminService)
+                .add(CodecService.class, codecService);
+        setServiceDirectory(testDirectory);
+
+        k8sNode = DefaultK8sNode.builder()
+                .hostname("minion-node")
+                .type(K8sNode.Type.MINION)
+                .dataIp(IpAddress.valueOf("10.134.34.222"))
+                .managementIp(IpAddress.valueOf("10.134.231.30"))
+                .intgBridge(DeviceId.deviceId("of:00000000000000a1"))
+                .state(K8sNodeState.INIT)
+                .build();
+    }
+
+    /**
+     * Tests the results of the REST API POST method with creating new nodes operation.
+     */
+    @Test
+    public void testCreateNodesWithCreateOperation() {
+        expect(mockK8sNodeAdminService.node(anyString())).andReturn(null).once();
+        mockK8sNodeAdminService.createNode(anyObject());
+        replay(mockK8sNodeAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = K8sNodeWebResourceTest.class
+                .getResourceAsStream("k8s-node-minion-config.json");
+        Response response = wt.path(PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .post(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(201));
+
+        verify(mockK8sNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API POST method without creating new nodes operation.
+     */
+    @Test
+    public void testCreateNodesWithoutCreateOperation() {
+        expect(mockK8sNodeAdminService.node(anyString())).andReturn(k8sNode).once();
+        replay(mockK8sNodeAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = K8sNodeWebResourceTest.class
+                .getResourceAsStream("k8s-node-minion-config.json");
+        Response response = wt.path(PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .post(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(201));
+
+        verify(mockK8sNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API PUT method with modifying the nodes.
+     */
+    @Test
+    public void testUpdateNodesWithoutModifyOperation() {
+        expect(mockK8sNodeAdminService.node(anyString())).andReturn(k8sNode).once();
+        mockK8sNodeAdminService.updateNode(anyObject());
+        replay(mockK8sNodeAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = K8sNodeWebResourceTest.class
+                .getResourceAsStream("k8s-node-minion-config.json");
+        Response response = wt.path(PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .put(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(200));
+
+        verify(mockK8sNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API PUT method without modifying the nodes.
+     */
+    @Test
+    public void testUpdateNodesWithModifyOperation() {
+        expect(mockK8sNodeAdminService.node(anyString())).andReturn(null).once();
+        replay(mockK8sNodeAdminService);
+
+        final WebTarget wt = target();
+        InputStream jsonStream = K8sNodeWebResourceTest.class
+                .getResourceAsStream("k8s-node-minion-config.json");
+        Response response = wt.path(PATH).request(MediaType.APPLICATION_JSON_TYPE)
+                .put(Entity.json(jsonStream));
+        final int status = response.getStatus();
+
+        assertThat(status, is(304));
+
+        verify(mockK8sNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API DELETE method with deleting the nodes.
+     */
+    @Test
+    public void testDeleteNodesWithDeletionOperation() {
+        expect(mockK8sNodeAdminService.node(anyString())).andReturn(k8sNode).once();
+        expect(mockK8sNodeAdminService.removeNode(anyString())).andReturn(k8sNode).once();
+        replay(mockK8sNodeAdminService);
+
+        String location = PATH + "/minion-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(mockK8sNodeAdminService);
+    }
+
+    /**
+     * Tests the results of the REST API DELETE method without deleting the nodes.
+     */
+    @Test
+    public void testDeleteNodesWithoutDeletionOperation() {
+        expect(mockK8sNodeAdminService.node(anyString())).andReturn(null).once();
+        replay(mockK8sNodeAdminService);
+
+        String location = PATH + "/minion-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(mockK8sNodeAdminService);
+    }
+}
diff --git a/apps/k8s-node/app/src/test/resources/org/onosproject/k8snode/codec/K8sMinionNode.json b/apps/k8s-node/app/src/test/resources/org/onosproject/k8snode/codec/K8sMinionNode.json
new file mode 100644
index 0000000..a6760f5
--- /dev/null
+++ b/apps/k8s-node/app/src/test/resources/org/onosproject/k8snode/codec/K8sMinionNode.json
@@ -0,0 +1,7 @@
+{
+  "hostname": "minion",
+  "type": "MINION",
+  "managementIp": "172.16.130.4",
+  "dataIp": "172.16.130.4",
+  "integrationBridge": "of:00000000000000a1"
+}
\ No newline at end of file
diff --git a/apps/k8s-node/app/src/test/resources/org/onosproject/k8snode/web/k8s-node-minion-config.json b/apps/k8s-node/app/src/test/resources/org/onosproject/k8snode/web/k8s-node-minion-config.json
new file mode 100644
index 0000000..725766e
--- /dev/null
+++ b/apps/k8s-node/app/src/test/resources/org/onosproject/k8snode/web/k8s-node-minion-config.json
@@ -0,0 +1,11 @@
+{
+  "nodes" : [
+    {
+      "hostname" : "minion-node",
+      "type" : "MINION",
+      "managementIp" : "10.134.231.32",
+      "dataIp" : "10.134.34.224",
+      "integrationBridge" : "of:00000000000000a2"
+    }
+  ]
+}
\ No newline at end of file