Introducing concept of a physical or logical region to facilitate
support of geographically distributed cluster and to lay ground
for multiple/filtered topology layouts.
Added implementation of manager and store; unit-tests included.
Change-Id: Ia01673a0b711b8785c0ea68768552c2f61d7ea6d
diff --git a/core/api/src/main/java/org/onosproject/net/region/RegionListener.java b/core/api/src/main/java/org/onosproject/net/region/RegionListener.java
new file mode 100644
index 0000000..1a41c76
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/region/RegionListener.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2016 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.net.region;
+
+import org.onosproject.event.EventListener;
+
+/**
+ * Entity capable of receiving region related events.
+ */
+public interface RegionListener extends EventListener<RegionEvent> {
+}