ryu-devel

[Ryu-devel] ArgsAlreadyParsedError in Ryu-manager ver 3.4

[Srini S. <sri...@gm...>]

Hi
I did a git clone of Ryu today (Ryu-manager version 3.4). When I ran the
manager with ryu/topology/switches and ryu/topology/dumper, I got the
ArgsAlreadyParsedError error. I read on the archive that it was fixed
previously. But, looks like there's some issue now.

ubuntu@ubuntu:~/ryu$ ./bin/ryu-manager --verbose --observe-links
ryu/topology/switches ryu/topology/dumper
loading app ryu/topology/switches
Traceback (most recent call last):
  File "./bin/ryu-manager", line 19, in <module>
    main()
  File "/home/ubuntu/ryu/ryu/cmd/manager.py", line 70, in main
    app_mgr.load_apps(app_lists)
  File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 210, in load_apps
    cls = self.load_app(app_cls_name)
  File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 194, in load_app
    mod = utils.import_module(name)
  File "/home/ubuntu/ryu/ryu/utils.py", line 86, in import_module
    __import__(name)
  File "/home/ubuntu/ryu/ryu/topology/switches.py", line 52, in <module>
    help='link discovery: explicitly drop lldp packet in')
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
1579, in __inner
    result = f(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
1741, in register_cli_opts
    self.register_cli_opt(opt, group, clear_cache=False)
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
1583, in __inner
    return f(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
1733, in register_cli_opt
    raise ArgsAlreadyParsedError("cannot register CLI option")
oslo.config.cfg.ArgsAlreadyParsedError: arguments already parsed: cannot
register CLI option

When I did a dump of the _args in the code that threw the
ArgsAlreadyParsedError, I saw the following entries in it:
['--verbose', '--observe-links', 'ryu/topology/switches',
'ryu/topology/dumper']

What am I doing wrong? I haven't made any changes after the git pull.

Thanks
Srini.

Re: [Ryu-devel] ArgsAlreadyParsedError in Ryu-manager ver 3.4

[<yam...@va...>]

> Hi
> I did a git clone of Ryu today (Ryu-manager version 3.4). When I ran the
> manager with ryu/topology/switches and ryu/topology/dumper, I got the
> ArgsAlreadyParsedError error. I read on the archive that it was fixed
> previously. But, looks like there's some issue now.
> 
> ubuntu@ubuntu:~/ryu$ ./bin/ryu-manager --verbose --observe-links
> ryu/topology/switches ryu/topology/dumper

please use
    ryu.topology.switches
or
    ryu/topology/switches.py

i recommend the former.

YAMAMOTO Takashi

> loading app ryu/topology/switches
> Traceback (most recent call last):
>   File "./bin/ryu-manager", line 19, in <module>
>     main()
>   File "/home/ubuntu/ryu/ryu/cmd/manager.py", line 70, in main
>     app_mgr.load_apps(app_lists)
>   File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 210, in load_apps
>     cls = self.load_app(app_cls_name)
>   File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 194, in load_app
>     mod = utils.import_module(name)
>   File "/home/ubuntu/ryu/ryu/utils.py", line 86, in import_module
>     __import__(name)
>   File "/home/ubuntu/ryu/ryu/topology/switches.py", line 52, in <module>
>     help='link discovery: explicitly drop lldp packet in')
>   File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
> 1579, in __inner
>     result = f(self, *args, **kwargs)
>   File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
> 1741, in register_cli_opts
>     self.register_cli_opt(opt, group, clear_cache=False)
>   File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
> 1583, in __inner
>     return f(self, *args, **kwargs)
>   File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
> 1733, in register_cli_opt
>     raise ArgsAlreadyParsedError("cannot register CLI option")
> oslo.config.cfg.ArgsAlreadyParsedError: arguments already parsed: cannot
> register CLI option
> 
> When I did a dump of the _args in the code that threw the
> ArgsAlreadyParsedError, I saw the following entries in it:
> ['--verbose', '--observe-links', 'ryu/topology/switches',
> 'ryu/topology/dumper']
> 
> What am I doing wrong? I haven't made any changes after the git pull.
> 
> Thanks
> Srini.

Re: [Ryu-devel] ArgsAlreadyParsedError in Ryu-manager ver 3.4

[Srini S. <sri...@gm...>]

Ah, ok. That works. Thanks Yamamoto-san.


On Thu, Dec 12, 2013 at 9:53 PM, YAMAMOTO Takashi <yam...@va...>wrote:

> > Hi
> > I did a git clone of Ryu today (Ryu-manager version 3.4). When I ran the
> > manager with ryu/topology/switches and ryu/topology/dumper, I got the
> > ArgsAlreadyParsedError error. I read on the archive that it was fixed
> > previously. But, looks like there's some issue now.
> >
> > ubuntu@ubuntu:~/ryu$ ./bin/ryu-manager --verbose --observe-links
> > ryu/topology/switches ryu/topology/dumper
>
> please use
>     ryu.topology.switches
> or
>     ryu/topology/switches.py
>
> i recommend the former.
>
> YAMAMOTO Takashi
>
> > loading app ryu/topology/switches
> > Traceback (most recent call last):
> >   File "./bin/ryu-manager", line 19, in <module>
> >     main()
> >   File "/home/ubuntu/ryu/ryu/cmd/manager.py", line 70, in main
> >     app_mgr.load_apps(app_lists)
> >   File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 210, in load_apps
> >     cls = self.load_app(app_cls_name)
> >   File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 194, in load_app
> >     mod = utils.import_module(name)
> >   File "/home/ubuntu/ryu/ryu/utils.py", line 86, in import_module
> >     __import__(name)
> >   File "/home/ubuntu/ryu/ryu/topology/switches.py", line 52, in <module>
> >     help='link discovery: explicitly drop lldp packet in')
> >   File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
> > 1579, in __inner
> >     result = f(self, *args, **kwargs)
> >   File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
> > 1741, in register_cli_opts
> >     self.register_cli_opt(opt, group, clear_cache=False)
> >   File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
> > 1583, in __inner
> >     return f(self, *args, **kwargs)
> >   File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line
> > 1733, in register_cli_opt
> >     raise ArgsAlreadyParsedError("cannot register CLI option")
> > oslo.config.cfg.ArgsAlreadyParsedError: arguments already parsed: cannot
> > register CLI option
> >
> > When I did a dump of the _args in the code that threw the
> > ArgsAlreadyParsedError, I saw the following entries in it:
> > ['--verbose', '--observe-links', 'ryu/topology/switches',
> > 'ryu/topology/dumper']
> >
> > What am I doing wrong? I haven't made any changes after the git pull.
> >
> > Thanks
> > Srini.
>