Traceback after subnet create

[Dr. Jens Harbott]

This happens with python-openstackclient=3.6.0, the creation of the subnet succeeds, but the result is not displayed.

$ openstack subnet create --subnet-range 10.242.4.0/24 --network private private1
'NoneType' object is not iterable
$ openstack subnet list
+--------------------------------------+----------+--------------------------------------+---------------+
| ID | Name | Network | Subnet |
+--------------------------------------+----------+--------------------------------------+---------------+
| cc0713f4-e6a1-48d4-aa71-25deb7cf9cff | private1 | 368d0e4b-c666-4227-91da-8a8da1417873 | 10.242.4.0/24 |
+--------------------------------------+----------+--------------------------------------+---------------+

Traceback (most recent call last):
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/osc_lib/shell.py", line 135, in run
    ret_val = super(OpenStackShell, self).run(argv)
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/cliff/app.py", line 279, in run
    result = self.run_subcommand(remainder)
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/osc_lib/shell.py", line 180, in run_subcommand
    ret_value = super(OpenStackShell, self).run_subcommand(argv)
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/cliff/app.py", line 400, in run_subcommand
    result = cmd.run(parsed_args)
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/osc_lib/command/command.py", line 41, in run
    return super(Command, self).run(parsed_args)
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/cliff/display.py", line 112, in run
    column_names, data = self.take_action(parsed_args)
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/openstackclient/network/v2/subnet.py", line 340, in take_action
    data = utils.get_item_properties(obj, columns, formatters=_formatters)
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/osc_lib/utils.py", line 324, in get_item_properties
    row.append(formatters[field](data))
  File "/home/ubuntu/ci_venv/local/lib/python2.7/site-packages/osc_lib/utils.py", line 209, in format_list
    return separator.join(sorted(data))
TypeError: 'NoneType' object is not iterable

Full debug log attached.

[Steve Martinelli (stevemar)]

seems like more fallout from the SDK refactor

[Steve Martinelli (stevemar)]

Just to make sure, what version of openstacksdk are you using?

[Dr. Jens Harbott (j-harbott)]

Just what got auto-installed after doing "pip install python-openstackclient" in a fresh venv:

$ pip freeze|grep sdk
openstacksdk==0.9.11

[Gary Kotton (garyk)]

This bug is now causes in CI to fail.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/417675

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/417675
Committed: https://git.openstack.org/cgit/openstack/osc-lib/commit/?id=f6c357d749fb6a8fa1497fe9c5c055e04ae59703
Submitter: Jenkins
Branch: master

commit f6c357d749fb6a8fa1497fe9c5c055e04ae59703
Author: Roey Chen <email address hidden>
Date: Sun Jan 8 04:27:07 2017 -0800

    Don't call formatters on None value

    Some object fields are allowed to be set to None, in such cases we
    shouldn't call any formatters on the field.
    For example, a subnet has a field 'service_types' which could be a list
    of values but is also nullable.

    Change-Id: I6574bdf742c0cd24cc824f08e8ba4c40d390cbe0
    Closes-Bug: #1652025

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/osc-lib 1.3.0 release.