ONOS-6903 Move EVPN from incubator to apps

Change-Id: Id84c59e28f2591535b0726afbc1a2fa3caf07db5
diff --git a/apps/evpn-route-service/api/src/main/java/org/onosproject/evpnrouteservice/RouteDistinguisher.java b/apps/evpn-route-service/api/src/main/java/org/onosproject/evpnrouteservice/RouteDistinguisher.java
new file mode 100644
index 0000000..ca217b6
--- /dev/null
+++ b/apps/evpn-route-service/api/src/main/java/org/onosproject/evpnrouteservice/RouteDistinguisher.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2017-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.evpnrouteservice;
+
+import java.util.Objects;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Represents Route Distinguisher of device in the network.
+ */
+public final class RouteDistinguisher {
+    private final String routeDistinguisher;
+
+    /**
+     * Constructor to initialize parameters.
+     *
+     * @param routeDistinguisher route distinguisher
+     */
+    private RouteDistinguisher(String routeDistinguisher) {
+        this.routeDistinguisher = routeDistinguisher;
+    }
+
+    /**
+     * Creates the route distinguisher.
+     *
+     * @param routeDistinguisher route distinguisher
+     * @return RouteDistinguisher
+     */
+    public static RouteDistinguisher routeDistinguisher(String routeDistinguisher) {
+        checkNotNull(routeDistinguisher);
+        return new RouteDistinguisher(routeDistinguisher);
+    }
+
+    /**
+     * get route distinguisher.
+     *
+     * @return distinguisher
+     */
+    public String getRouteDistinguisher() {
+        return routeDistinguisher;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(routeDistinguisher);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj instanceof RouteDistinguisher) {
+            RouteDistinguisher other = (RouteDistinguisher) obj;
+            return Objects.equals(this.routeDistinguisher, other.routeDistinguisher);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("routeDistinguisher", this.routeDistinguisher).toString();
+    }
+}