- Added MODIFY fucntion in the driver
- Decoupled topology event handler from events notification thread
- Added a logic to handle link failure and backup (using MODIFY-STRICT feature)

Change-Id: I8da952634299068e61b0b969e1d90274f5c4f46e
diff --git a/src/main/java/net/onrc/onos/core/matchaction/MatchActionOperations.java b/src/main/java/net/onrc/onos/core/matchaction/MatchActionOperations.java
index 7d9063f..e912956 100644
--- a/src/main/java/net/onrc/onos/core/matchaction/MatchActionOperations.java
+++ b/src/main/java/net/onrc/onos/core/matchaction/MatchActionOperations.java
@@ -27,6 +27,11 @@
 
         /** Remove an existing match action. */
         REMOVE,
+
+        /*** Modify an existing match action entry strictly matching wildcards
+         * and priority (works as MODIFY StRICT). */
+        MODIFY,
+
     }
 
     /**