Renamed datagrid and datastore packages
net.onrc.onos.datagrid.* => net.onrc.onos.core.datagrid.*
net.onrc.onos.datastore.* => net.onrc.onos.core.datastore.*
Change-Id: Ibe1894a6fabae08ea7cfcbf6595f0c91b05ef497
diff --git a/src/main/java/net/onrc/onos/core/datagrid/IEventChannelListener.java b/src/main/java/net/onrc/onos/core/datagrid/IEventChannelListener.java
new file mode 100644
index 0000000..ca18aa7
--- /dev/null
+++ b/src/main/java/net/onrc/onos/core/datagrid/IEventChannelListener.java
@@ -0,0 +1,27 @@
+package net.onrc.onos.core.datagrid;
+
+/**
+ * Event Channel Listener Interface.
+ */
+public interface IEventChannelListener<K, V> {
+ /**
+ * Receive a notification that an entry is added.
+ *
+ * @param value the value for the entry.
+ */
+ void entryAdded(V value);
+
+ /**
+ * Receive a notification that an entry is removed.
+ *
+ * @param value the value for the entry.
+ */
+ void entryRemoved(V value);
+
+ /**
+ * Receive a notification that an entry is updated.
+ *
+ * @param value the value for the entry.
+ */
+ void entryUpdated(V value);
+}