Great! I will try it. Thanks a lot.
发件人: Eros Spalla [mailto:[email protected]]
发送时间: 2014年4月9日 8:59
收件人: LIU, Kun
抄送: FUJITA Tomonori; [email protected]
主题: Re: 答复: 答复: [Ryu-devel] How does a RYU app trigger an event like
EventOFPPacketIn ?
The start method is called after the constructor.
class YourRyuApp(RyuApp):
def __init__(self):
pass
def start(self):
super(YourRyuApp, self).start()
# do what you want here. For exemple, send events, loops, open
connections
@handler.set_ev_cls(ofp_event.
EventOFPStateChange, [handler.MAIN_DISPATCHER, handler.DEAD_DISPATCHER]) #This
is to not terminate the application
def _state_change_handler(self, ev):
pass
Cheers.
2014-04-08 21:19 GMT-03:00 LIU, Kun
<[email protected]<mailto:[email protected]>>:
Thank you! I think I could trigger my own events in the handler functions of
EventOFPXXX, and then handle them. I don’t understand how to use the start()
method to do this work, can you give me an example, please?
Best Regards,
Kun Liu
发件人: Eros Spalla [mailto:[email protected]<mailto:[email protected]>]
发送时间: 2014年4月8日 22:25
收件人: LIU, Kun
抄送: FUJITA Tomonori;
[email protected]<mailto:[email protected]>
主题: Re: 答复: [Ryu-devel] How does a RYU app trigger an event like
EventOFPPacketIn ?
can I think that these events(EventOFPXXX, EventNetworkXXX) are RYU’s built-in
events? Yes.
and we can only define(and send) our own events during the handling of these
build-in events? No. You can define your own event and send it whenever you
want. For exemple, you can use ryu events, or the constructor method or the
start() method to trigger your event.
Cheers.
2014-04-08 5:51 GMT-03:00 LIU, Kun
<[email protected]<mailto:[email protected]>>:
Hi, Spalla and Tomonori, thank you for the reply. I read the RYU
book(http://osrg.github.io/ryu-book/en/Ryubook.pdf) and learned that the
application programming model(Page 135), there is a data path thread which will
send events to the event loop, can I think that these events(EventOFPXXX,
EventNetworkXXX) are RYU’s built-in events ? and we can only define(and send)
our own events during the handling of these build-in events ?
发件人: Eros Spalla [mailto:[email protected]<mailto:[email protected]>]
发送时间: 2014年4月7日 21:07
收件人: FUJITA Tomonori
抄送: LIU, Kun;
[email protected]<mailto:[email protected]>
主题: Re: [Ryu-devel] How does a RYU app trigger an event like EventOFPPacketIn ?
Kun Liu. These links may help you.
http://comments.gmane.org/gmane.network.ryu.devel/5728
http://ryu.readthedocs.org/en/latest/api_ref.html
2014-04-06 22:10 GMT-03:00 FUJITA Tomonori
<[email protected]<mailto:[email protected]>>:
On Thu, 3 Apr 2014 17:20:59 +0800
"LIU, Kun" <[email protected]<mailto:[email protected]>> wrote:
> I am wondering how does a RYU app trigger an event
> (e.g. ,EventOFPPacketIn) ? I plan to develop my own app with some
> new defined events, however I do not know the mechanism of events,
> and I cannot find out from the source codes. Thanks a lot.
I would recommend you to check out a simpler example:
https://github.com/osrg/ryu/blob/master/ryu/app/simple_switch_lacp.py
https://github.com/osrg/ryu/blob/master/ryu/lib/lacplib.py
The above example is not best though, however, good enough for
defining your own events.
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