ryu controller can not start when ovs_ryuapp.py compiled to pyc

[Rong.Wang]

hi,
I found a problem in my openstack,
when I use the of_interface 'native' mode, if I compiled the ovs_rpyapp.py to pyc(and remove the ovs_rpyapp.py file), and restart the openstack-openvswitch-agent.service, found that the ryu-controller could not be connected by ovs.
And, if I reuse the ovs_rpyapp.py to restart the openstack-openvswitch-agent.service, then the controller is ok can be connected by ovs.

So, whether this is a bug? or something I missed ?
Thanks a lot.

[Tristan Cacqueray (tristan-cacqueray)]

Removing the private setting since this doesn't describe a security bug.

[Rong.Wang (stormflying)]

I confirmed how does this problem occurs.
Ryu (app/ofctl/api.py) uses the call stack to load the dependent-app('ryu.app.ofctl.service').
When ovs_ryuapp.py be compiled to pyc, the call stack changed and missed the stack of ovs_ryuapp.
So, the dependent-app will not be assigned to ovs_ryuapp, then the ofctl would not be loaded.
This may be the bug of Ryu, and NOT compile the ovs_ryuapp.py to pyc may avoid this problem.