[ONOS-2162][ONOS-2259]-- OVSDB- The implementation of OvsdbProviderService
and OvsdbClientService.

Change-Id: I3e04d7c111adf16201f8ad7ec732eb81de05b960
diff --git a/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbConstant.java b/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbConstant.java
new file mode 100644
index 0000000..c1133bb
--- /dev/null
+++ b/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbConstant.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.ovsdb.controller;
+
+/**
+ * Ovsdb related constants.
+ */
+public final class OvsdbConstant {
+
+    /**
+     * Default constructor.
+     *
+     * The constructor is private to prevent creating an instance of this
+     * utility class.
+     */
+    private OvsdbConstant() {
+    }
+
+    /** Ovsdb database Open_vSwitch. */
+    public static final String DATABASENAME = "Open_vSwitch";
+
+    /** Ovsdb table Bridge. */
+    public static final String BRIDGE = "Bridge";
+
+    /** Ovsdb table Interface. */
+    public static final String INTERFACE = "Interface";
+
+    /** Ovsdb table Controller. */
+    public static final String CONTROLLER = "Controller";
+
+    /** Ovsdb table Port. */
+    public static final String PORT = "Port";
+
+    /** Ovsdb bridge name. */
+    public static final String INTEGRATION_BRIDGE = "br-int";
+
+    /** Ovsdb vxlan tunnel type. */
+    public static final String TYPEVXLAN = "vxlan";
+
+    /** Openflow version. */
+    public static final String OPENFLOW13 = "OpenFlow13";
+
+    /** Ovsdb external_id_interface_id.. */
+    public static final String EXTERNAL_ID_INTERFACE_ID = "iface-id";
+
+    /** Ovsdb external_id_vm_mac. */
+    public static final String EXTERNAL_ID_VM_MAC = "attached-mac";
+
+    /** Openflow port. */
+    public static final int OFPORT = 6633;
+
+    /** Ovsdb port. */
+    public static final int OVSDBPORT = 6640;
+
+}