topic Re: Suppress Genie output when using in a script in Tools

Suppress Genie output when using in a script

Mike Assel — Thu, 18 Jul 2019 18:17:45 GMT

I'm playing around with using Genie in a python script. Whenever I do anything with Genie, like device.connect(), it prints the output to the console. How do I suppress that? Thanks, Mike

Re: Suppress Genie output when using in a script

Jeremy Schulman — Fri, 11 Oct 2019 15:38:35 GMT

Given a device instance, you can change the log settings via the connectionmgr instance.

For example:

import logging

# dev is a Device instance from a testbed

dev.connectionmgr.log.setLevel(logging.ERROR)

# now execute a command and you will not see the output on the console
resp = dev.execute('show version')

# you can print the response
print(resp)

Re: Suppress Genie output when using in a script

Jeremy Schulman — Tue, 15 Oct 2019 12:29:24 GMT

After further research, there are two other methods:

1) When you initially connect to a device, you can pass the argument dev.connect(log_stdout=False) to disable logging; this disable will be in-effect for the entire session until you re-enable it.

2) The device instance, after connection, provide a dev.log_user() method, which can be enabled/disabled passing True/False.

Re: Suppress Genie output when using in a script

Mike Assel — Mon, 21 Oct 2019 01:14:55 GMT

Thanks Jeremy! That did the trick. However when I use dev.connect(log_stdout=False) then the output is not logged to a file. A few follow up questions:

How did you find dev.connect(log_stdout=False) ???? I did a lot of googling and NOTHING comes up (other than your blog post 🙂
Assuming I can disable logging to the console but enable logging to a file, how would I specify the path?

Re: Suppress Genie output when using in a script

Jeremy Schulman — Mon, 21 Oct 2019 02:47:04 GMT

Hi @Mike Assel,

re: connect(log_stdout=False) I learned via a response on Twitter from one of the DevNet genie developers. After I learned this, I did a scan of the sourcecode and I could not find any reference to this Device() argument either. Seem like an opportunity for the DevNet team to add more documentation.

re: logging - even though the console logging is disabled, there is still a logfile. You can find it using the Device.logfile attribute, for example:

In [11]: dev.logfile
Out[11]: '/tmp/atlrs21-cli-20191021T024126194.log'

I have not experimented with changing the logfile value.

Hope this helps!

Re: Suppress Genie output when using in a script

Mike Assel — Mon, 21 Oct 2019 13:36:17 GMT

My bad. I had checked and thought I did not see a log file, but I checked again and indeed it was there. Thanks for the help.

Re: Suppress Genie output when using in a script

jmattbullen — Fri, 21 Jan 2022 15:33:31 GMT

@Jeremy Schulman

I know this is a blast from the past but would you be willing to take a walk down memory lane and walk me through how you found this? I've spent hours trying it myself. I think my hold up is I can't even find the connect method that the object of class genie.libs.conf.device.nxos.device.Device can run to inspect the code. I looked into all the inherited classes but didn't find a connect method. Using the inspect module it looks like it my be written in C and maybe thats why I can't see the code. How did you find out the exact syntax to use?

I'm using this code in ipython to test

from genie import testbed
tb = testbed.load(".\testbed.yaml")
core1 = tb.devices.Core1
core1.connect()

Re: Suppress Genie output when using in a script

jmattbullen — Fri, 21 Jan 2022 15:54:33 GMT

nevermind, I completely missed the post where you got that straight from a dev

Re: Suppress Genie output when using in a script

jmattbullen — Fri, 21 Jan 2022 16:17:34 GMT

stumbled across the documentation for the connect method. It uses another cisco framework call Unicon. On their docs it lists out the options you can use for pyats

https://developer.cisco.com/docs/unicon/

Re: Suppress Genie output when using in a script

mjbear257 — Mon, 13 May 2024 13:09:05 GMT

Here's a direct link to the Unicon device connection arguments.

https://pubhub.devnetcloud.com/media/unicon/docs/user_guide/connection.html#python-apis