Hey there
Whats the right way to implement a custom-Event between two app's?
That's the way I have done this:
### file: ryu/app/app_one.py ###
import ryu.app.AppOne
...
class EventAppOne(event.EventBase):
def __init__ ...
...
class AppOne(app_manager.RyuApp):
def __init__ ...
...
def foo(self, dp):
self.send_event_to_observers(ryu.app.AppOne.EventAppOne(dp))
### file: ryu/app/app_two.py ###
from ryu.app import AppOne
...
class AppTwo(app_manager.RyuApp):
def __init__ ...
...
@set_ev_cls(AppOne.EventAppOne)
def bar(self, ev):
...
The Problem is in the app_manager.py (or I do not understand how to
implement events is the reason...) in the method:
def get_observers(self, ev, state):
observers = []
for k, v in self.observers.get(ev.__class__, {}).iteritems():
if not state or not v or state in v:
observers.append(k)
If you send the event to the oveservers as follows:
self.send_event_to_observers(EventAppOne(dp))
then the attribute ev.__class__ in def get_observers(self, ev, state)
contains the key "AppOne.EventAppOne" but in the observers dict is the
key "ryu.app.AppOne.EventAppOne". So the event is not thrown.
If you send the event like this (and described before):
self.send_event_to_observers(ryu.app.AppOne.EventAppOne(dp))
then the attribute ev.__class__ in def get_observers(self, ev, state)
contains the right value that is "ryu.app.AppOne.EventAppOne" which is
the same as the key in observers dict and the event is thrown.
I hope I explained it correctly.
g *pae
--
ZHAW - Zurich University of Applied Sciences
Institute of Applied Information Technology InIT
InIT Cloud Computing Laboratory ICCLab
Philipp Aeschlimann
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CH-8401 Winterthur
Tel. +41 58 934 6964 (intern 6964)
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