Finished implementing FlowPusherService.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/IFlowPusherService.java b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/IFlowPusherService.java
new file mode 100644
index 0000000..830d47f
--- /dev/null
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/IFlowPusherService.java
@@ -0,0 +1,37 @@
+package net.onrc.onos.ofcontroller.flowmanager;
+
+import net.floodlightcontroller.core.IOFSwitch;
+import net.floodlightcontroller.core.module.IFloodlightService;
+
+import org.openflow.protocol.OFMessage;
+
+public interface IFlowPusherService extends IFloodlightService {
+ /**
+ * Add a message to the queue of a switch.
+ * @param sw
+ * @param msg
+ * @return
+ */
+ void addMessage(long dpid, OFMessage msg);
+
+ /**
+ * Suspend pushing message to a switch.
+ * @param sw
+ * @return true if success
+ */
+ boolean suspend(long dpid);
+
+ /**
+ * Resume pushing message to a switch.
+ * @param sw
+ * @return true if success
+ */
+ boolean resume(long dpid);
+
+ /**
+ * Get whether pushing of message is suspended or not.
+ * @param sw
+ * @return true if suspended
+ */
+ boolean isSuspended(long dpid);
+}