Refactored packet broadcasting framework. Previously only ARP packets were being broadcasted, but as part of reactive forwarding we need to broadcast all packets that we don't know where to send. This commit refactors the Hazelcast notification system used to tell other instances to send packet-outs.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IPacketOutEventHandler.java b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IPacketOutEventHandler.java
new file mode 100644
index 0000000..86b3728
--- /dev/null
+++ b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IPacketOutEventHandler.java
@@ -0,0 +1,18 @@
+package net.onrc.onos.ofcontroller.proxyarp;
+
+/**
+ * Classes may implement this interface if they wish to subscribe to
+ * packet out notifications from the datagrid service. Packet out notifications
+ * are used to direct other ONOS instances to send packets out particular
+ * ports under their control.
+ *
+ */
+public interface IPacketOutEventHandler {
+
+ /**
+ * Notify the packet out event handler that an packet out notification has
+ * been received.
+ * @param packetOutNotification An object describing the notification
+ */
+ public void packetOutNotification(PacketOutNotification packetOutNotification);
+}