get_environment not working on IOS-XE using the IOS driver

[tcaiazza]

Description of Issue/Question

When I try to use the get_environment() on an ios-xe device of mine I get the following stack trace

/home/tim/code/napalm/napalm/ios/ios.py in get_environment(self)
   2098         if "Invalid input detected at" not in output:
   2099             for line in output.splitlines():
-> 2100                 if "Processor" in line:
   2101                     _, _, proc_total_mem, proc_used_mem, _ = line.split()[:5]
   2102                 elif "I/O" in line or "io" in line:

UnboundLocalError: local variable 'proc_total_mem' referenced before assignment

The ios driver is looking to run the command show memory statistics which isn't valid on an ios-xe device, the command is just show memory

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• [] No

Setup

napalm version

(Paste verbatim output from pip freeze | grep napalm between quotes below)

napalm==2.4.0

Network operating system version

(Paste verbatim output from show version - or equivalent - between quotes below)

Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.06E RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Sat 17-Dec-16 00:22 by prod_rel_team



Cisco IOS-XE software, Copyright (c) 2005-2015 by cisco Systems, Inc.
All rights reserved.  Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0.  The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY.  You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.
(http://www.gnu.org/licenses/gpl-2.0.html) For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.



ROM: IOS-XE ROMMON
BOOTLDR: CAT3K_CAA Boot Loader (CAT3K_CAA-HBOOT-M) Version 3.58, RELEASE SOFTWARE (P)

core1 uptime is 3 weeks, 2 days, 7 hours, 12 minutes
Uptime for this control processor is 3 weeks, 2 days, 7 hours, 15 minutes
System returned to ROM by Power Failure
System image file is "flash:packages.conf"
Last reload reason: Power Failure



This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

License Level: Ipservices
License Type: Permanent
Next reload license Level: Ipservices

cisco WS-C3850-48P (MIPS) processor with 4194304K bytes of physical memory.
Processor board ID FCW2103F010
6 Virtual Ethernet interfaces
52 Gigabit Ethernet interfaces
4 Ten Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
252000K bytes of Crash Files at crashinfo:.
1611414K bytes of Flash at flash:.
0K bytes of Dummy USB Flash at usbflash0:.
0K bytes of  at webui:.

Base Ethernet MAC Address          : 
Motherboard Assembly Number        : 
Motherboard Serial Number          :
Model Revision Number              : AB0
Motherboard Revision Number        : A0
Model Number                       : WS-C3850-48P
System Serial Number               :


Switch Ports Model              SW Version        SW Image              Mode
------ ----- -----              ----------        ----------            ----
*    1 56    WS-C3850-48P       03.06.06E         cat3k_caa-universalk9 INSTALL


Configuration register is 0x102

Steps to Reproduce the Issue

Connect to a device running ios-xe and run the function get_environment()

Error Traceback

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

/home/tim/code/napalm/napalm/ios/ios.py in get_environment(self)
   2098         if "Invalid input detected at" not in output:
   2099             for line in output.splitlines():
-> 2100                 if "Processor" in line:
   2101                     _, _, proc_total_mem, proc_used_mem, _ = line.split()[:5]
   2102                 elif "I/O" in line or "io" in line:

UnboundLocalError: local variable 'proc_total_mem' referenced before assignment