Hello, i am trying to implement a controller module that handles two types of Events: the already existing FlowRemoved and another of my own creation "CustomEvent" that i will execute in various circumstances.
I have read the section on custom events contained in the POX manual ( https://openflow.stanford.edu/display/ONL/POX+Wiki#POXWiki-TheEventSystem%3Apox.lib.revent ) and have successfully executed the examples. I have looked up a bit how the POX raises events such as PacketIn. I added the following lines of code in pox/pox/openflow/__init__.py class CustomEvent(Event): """ Our own custom event """ def __init__(self): Event.__init__(self) Then i added a handler for that event in an already existing controller module, def _handle_CustomEvent (self, event): log.debug('The Event was raised successfully') However when i manually raise the above event, (e.g. during the handling of a PacketIn event in forwarding.l2_learning) nothing happens. I used both the method explained in the manual (creating a subclass of EventMixin with _eventMixin_set=([CustomEvent], creating an instance of that class and raising the event on that instance), and the core.raiselater method. Important note: In the same module there is a handler for FlowRemoved Events, that is notified without issues, when a flow is removed from the switch, so i don't think there is a listener issue. In my efforts to find the problem i tried to experiment in openflow/of_01.py and specifically in lines 85, 177 where FlowRemoved and PacketIn events are raised from the Controller, i tried to force raise my own event when a PacketIn was supposed to be raised. def handle_PACKET_IN (con, msg): #A e = con.ofnexus.raiseEventNoErrors(CustomEvent, con, msg) if e is None or e.halt != True: con.raiseEventNoErrors(CustomEvent, con, msg) Nothing happened either (apart from losing connectivity between the hosts). I would appreciate any help, Adam Pavlidis
