Adding EVPN App code
Change-Id: Id3b2192f56f054cadcd8384092245b8757a781a9
diff --git a/apps/evpnopenflow/src/main/java/org/onosproject/evpnopenflow/rsc/VpnInstance.java b/apps/evpnopenflow/src/main/java/org/onosproject/evpnopenflow/rsc/VpnInstance.java
new file mode 100755
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+++ b/apps/evpnopenflow/src/main/java/org/onosproject/evpnopenflow/rsc/VpnInstance.java
@@ -0,0 +1,78 @@
+/*
+ * 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.evpnopenflow.rsc;
+
+import org.onosproject.incubator.net.routing.EvpnInstanceName;
+import org.onosproject.incubator.net.routing.RouteDistinguisher;
+import org.onosproject.incubator.net.routing.VpnRouteTarget;
+
+import java.util.Set;
+
+/**
+ * Representation of a VPN instance.
+ */
+public interface VpnInstance {
+
+ /**
+ * Returns the VPN instance identifier.
+ *
+ * @return VPN instance identifier
+ */
+ VpnInstanceId id();
+
+ /**
+ * Returns the VPN instance description.
+ *
+ * @return VPN instance description
+ */
+ String description();
+
+ /**
+ * Returns the VPN instance route distinguishes.
+ *
+ * @return VPN instance route distinguishes
+ */
+ RouteDistinguisher routeDistinguisher();
+
+ /**
+ * Returns the VPN instance name.
+ *
+ * @return VPN instance name
+ */
+ EvpnInstanceName vpnInstanceName();
+
+ /**
+ * Returns the export route target information.
+ *
+ * @return export route target information
+ */
+ Set<VpnRouteTarget> getExportRouteTargets();
+
+ /**
+ * Returns the import route target information.
+ *
+ * @return VPN instance ipv4 family
+ */
+ Set<VpnRouteTarget> getImportRouteTargets();
+
+ /**
+ * Returns the config route target information.
+ *
+ * @return config route target information.
+ */
+ Set<VpnRouteTarget> getConfigRouteTargets();
+}