I am using simple_switch.py from app folder as
{noformat}
ryu-manager ryu/app/simple_switch.py
{noformat}
I want to use the functions from the file ryu/topology/api.py inside
simple_switch.py above.
If I try to use it inside __init__ function fo SimpleSwitch class as below
{noformat}
def __init__(self, *args, **kwargs):
super(SimpleSwitch, self).__init__(*args, **kwargs)
self.mac_to_port = {}
s_list = get_all_switch(app_manager)
{noformat}
I get the following error.
{noformat}
loading app ryu/app/simple_switch.py
loading app ryu.controller.ofp_handler
instantiating app ryu.controller.ofp_handler of OFPHandler
instantiating app ryu/app/simple_switch.py of SimpleSwitch
Traceback (most recent call last):
File "/usr/local/bin/ryu-manager", line 9, in <module>
load_entry_point('ryu==3.8', 'console_scripts', 'ryu-manager')()
File "/usr/local/lib/python2.7/dist-packages/ryu/cmd/manager.py", line
73, in main
services.extend(app_mgr.instantiate_apps(**contexts))
File "/usr/local/lib/python2.7/dist-packages/ryu/base/app_manager.py",
line 434, in instantiate_apps
self._instantiate(app_name, cls, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/ryu/base/app_manager.py",
line 420, in _instantiate
app = cls(*args, **kwargs)
File "/home/karthik/Projects/ryu/ryu/app/simple_switch.py", line 35, in
__init__
s_list = get_all_switch(app_manager)
NameError: global name 'get_all_switch' is not defined
{noformat}
My questions are as follows.
1) Can I get the topology information about my mininet topology using
- get_all_switch() and
- get_all_link() defined in
ryu/topology/api.py?
2) If yes,Why isn't the code above not working as expected?
Thanks & Regards,
Karthik.
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