expected string or bytes-like object on get_facts

[brantleyp1]

Description of Issue/Question

I've got napalm/napalm-ros installed on an instance of NetBox and am hitting an error "napalm - ERROR - method - Failed: expected string or bytes-like object" either calling get_facts via CLI or NetBox GUI

Setup

Fresh install of Ubuntu 20.04 that has updates run.

The Napalm/Napalm-ROS are being installed in both /usr/local/lib/python3.8 and /opt/netbox/venv/lib/python3.8, but seeing same results from either. This is an artifact of the ansible role I'm using to build the netbox install.

napalm-ros version

napalm-ros==1.0.1

ROS version

 #   NAME                                                     VERSION                                                    SCHEDULED
 0   routeros-arm64                                           6.48.1
 1   system                                                   6.48.1
 2   ipv6                                                     6.48.1
 3 X wireless                                                 6.48.1
 4 X hotspot                                                  6.48.1
 5 X mpls                                                     6.48.1
 6   routing                                                  6.48.1
 7   ppp                                                      6.48.1
 8   dhcp                                                     6.48.1
 9   security                                                 6.48.1
10   advanced-tools                                           6.48.1

Steps to Reproduce the Issue

Install napalm==3.4.1 and napalm_ros==1.0.1

Running into an issue with netmiko that is required for napalm>=4.0.0 so keeping at 3.4.1 for now.

Error Traceback

(Paste the complete traceback of the exception between quotes below)

napalm --user yep --password 'uhhuh' --vendor ros 172.X.X.3 call get_facts
2022-07-13 16:04:29,089 - napalm - ERROR - method - Failed: expected string or bytes-like object

================= Traceback =================

Traceback (most recent call last):
  File "/usr/local/bin/napalm", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.8/dist-packages/napalm/base/clitools/cl_napalm.py", line 308, in main
    run_tests(args)
  File "/usr/local/lib/python3.8/dist-packages/napalm/base/clitools/cl_napalm.py", line 291, in run_tests
    call_getter(device, args.method, **method_kwargs)
  File "/usr/local/lib/python3.8/dist-packages/napalm/base/clitools/cl_napalm.py", line 27, in wrapper
    r = func(*args, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/napalm/base/clitools/cl_napalm.py", line 255, in call_getter
    r = func(**kwargs)
  File "/usr/local/lib/python3.8/dist-packages/napalm_ros/ros.py", line 382, in get_facts
    'interface_list': napalm.base.utils.string_parsers.sorted_nicely(
  File "/usr/local/lib/python3.8/dist-packages/napalm/base/utils/string_parsers.py", line 19, in sorted_nicely
    return sorted(sort_me, key=alphanum_key)
  File "/usr/local/lib/python3.8/dist-packages/napalm/base/utils/string_parsers.py", line 14, in alphanum_key
    return [convert(c) for c in re.split("([0-9]+)", key)]
  File "/usr/lib/python3.8/re.py", line 231, in split
    return _compile(pattern, flags).split(string, maxsplit)
TypeError: expected string or bytes-like object

Workaround

I'm able to work around it by changing the function and removing the call to napalm.base.string_parsers:

    def get_facts(self):
        resource = tuple(self.api('/system/resource/print'))[0]
        identity = tuple(self.api('/system/identity/print'))[0]
        routerboard = tuple(self.api('/system/routerboard/print'))[0]
        interfaces = tuple(self.api('/interface/print'))
        return {
            'uptime': to_seconds(resource['uptime']),
            'vendor': resource['platform'],
            'model': resource['board-name'],
            'hostname': identity['name'],
            'fqdn': u'',
            'os_version': resource['version'],
            'serial_number': routerboard.get('serial-number', ''),
            'interface_list': tuple(iface['name'] for iface in interfaces),
        #    'interface_list': napalm.base.utils.string_parsers.sorted_nicely(
        #        tuple(iface['name'] for iface in interfaces),
        #    ),
        }

Which nets a better result:

napalm --user xxxxxxx --password 'xxxxxxx' --vendor ros 172.x.x.3 call get_facts
{
    "uptime": 4188696,
    "vendor": "MikroTik",
    "model": "CCR2004-1G-12S+2XS",
    "hostname": "xxxxxxx",
    "fqdn": "",
    "os_version": "6.48.1 (stable)",
    "serial_number": "xxxxxxxx",
    "interface_list": [
        "ether1-COPPER-TEST-PORT",
etc...
        "WiFi-Management"
    ]
}

[Łukasz Kostka]

Please provide all interface names for a device that crashes napalm-ros. I suspect some strange character in name.

[stale]

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