ONOS-685: Network Configuration Manager support for Segment Routing application

Change-Id: Ia15bfd24559dd5542633c8b76d500b2d31362340
diff --git a/src/main/java/org/onosproject/segmentrouting/grouphandler/DeviceProperties.java b/src/main/java/org/onosproject/segmentrouting/grouphandler/DeviceProperties.java
new file mode 100644
index 0000000..816ca7b
--- /dev/null
+++ b/src/main/java/org/onosproject/segmentrouting/grouphandler/DeviceProperties.java
@@ -0,0 +1,57 @@
+/*
+ * 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.segmentrouting.grouphandler;
+
+import java.util.List;
+
+import org.onlab.packet.MacAddress;
+import org.onosproject.net.DeviceId;
+
+/**
+ * Mechanism through which group handler module retrieves
+ * the device specific attributes such as segment ID,
+ * Mac address...etc from group handler applications.
+ */
+public interface DeviceProperties {
+    /**
+     * Returns the segment id of a device to be used in group creation.
+     *
+     * @param deviceId device identifier
+     * @return segment id of a device
+     */
+    int getSegmentId(DeviceId deviceId);
+    /**
+     * Returns the Mac address of a device to be used in group creation.
+     *
+     * @param deviceId device identifier
+     * @return mac address of a device
+     */
+    MacAddress getDeviceMac(DeviceId deviceId);
+    /**
+     * Indicates whether a device is edge device or transit/core device.
+     *
+     * @param deviceId device identifier
+     * @return boolean
+     */
+    boolean isEdgeDevice(DeviceId deviceId);
+    /**
+     * Returns all segment IDs to be considered in building auto
+     *
+     * created groups.
+     * @return list of segment IDs
+     */
+    List<Integer> getAllDeviceSegmentIds();
+}