Inter-connect k8s and openstack intg bridge, kbr-ex and kbr-router

Change-Id: Id7d3c874e8b267252ca387b1ca6f67b9f9bc5116
diff --git a/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sRouterBridge.java b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sRouterBridge.java
new file mode 100644
index 0000000..7e5b472
--- /dev/null
+++ b/apps/k8s-node/api/src/main/java/org/onosproject/k8snode/api/K8sRouterBridge.java
@@ -0,0 +1,100 @@
+/*
+ * 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.k8snode.api;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.base.Strings;
+import org.onosproject.net.DeviceId;
+
+import java.util.Objects;
+
+import static org.onosproject.k8snode.api.Constants.ROUTER_BRIDGE;
+
+/**
+ * K8s router bridge.
+ */
+public class K8sRouterBridge implements K8sBridge {
+
+    private static final String OF_PREFIX = "of:";
+
+    private final int segmentId;
+
+    /**
+     * Default constructor.
+     *
+     * @param segmentId  segment identifier
+     */
+    public K8sRouterBridge(int segmentId) {
+        this.segmentId = segmentId;
+    }
+
+    /**
+     * Returns segment ID.
+     *
+     * @return segment ID
+     */
+    public int segmentId() {
+        return segmentId;
+    }
+
+    @Override
+    public DeviceId deviceId() {
+        return DeviceId.deviceId(dpid());
+    }
+
+    @Override
+    public String dpid() {
+        return genDpidFromName(name());
+    }
+
+    @Override
+    public String name() {
+        return ROUTER_BRIDGE + "-" + segmentId;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        K8sRouterBridge that = (K8sRouterBridge) o;
+        return segmentId == that.segmentId;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(segmentId);
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("segmentId", segmentId)
+                .toString();
+    }
+
+    private String genDpidFromName(String name) {
+        if (name != null) {
+            String hexString = Integer.toHexString(name.hashCode());
+            return OF_PREFIX + Strings.padStart(hexString, 16, '0');
+        }
+
+        return null;
+    }
+}