[LIBCLOUD-840] libcloud crashs when accessing Swift based object store using Keystone auth API v3

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Component/s: Storage

Environment

ANY

• Flags: Patch
• Assignee: Unassigned
• Reporter: Mario Oschwald
• Created: 27/Jul/16 11:50
• Updated: 11/Aug/17 04:56

Description

libcloud crashs when accessing Swift based object store using Keystone auth API v3

Code to reproduce:

from libcloud.storage.types import Provider
from libcloud.storage.providers import get_driver

cls = get_driver(Provider.OPENSTACK_SWIFT)
driver = cls('USER', 'PASSWORD', ex_force_auth_version='3.x_password',  ex_force_auth_url='https://keystone.cst.de:5001',
ex_tenant_name='signing_service', ex_domain_name='AD', ex_force_service_name='ceph')
container = driver.create_container(container_name='fnord')

This produces the following stack trace:

Traceback (most recent call last):
  File "D:/DEV/MAIN/Release Management/bin/cstutil/cloudtools.py", line 18, in <module>
    main()
  File "D:/DEV/MAIN/Release Management/bin/cstutil/cloudtools.py", line 14, in main
    container = driver.create_container(container_name='fnord')
  File "C:\Python27\lib\site-packages\libcloud\storage\drivers\cloudfiles.py", line 358, in create_container
    '/%s' % (container_name_encoded), method='PUT')
  File "C:\Python27\lib\site-packages\libcloud\storage\drivers\cloudfiles.py", line 163, in request
    raw=raw)
  File "C:\Python27\lib\site-packages\libcloud\common\openstack.py", line 227, in request
    raw=raw)
  File "C:\Python27\lib\site-packages\libcloud\common\base.py", line 753, in request
    action = self.morph_action_hook(action)
  File "C:\Python27\lib\site-packages\libcloud\common\openstack.py", line 294, in morph_action_hook
    self._populate_hosts_and_request_paths()
  File "C:\Python27\lib\site-packages\libcloud\common\openstack.py", line 338, in _populate_hosts_and_request_paths
    url = self._ex_force_base_url or self.get_endpoint()
  File "C:\Python27\lib\site-packages\libcloud\storage\drivers\cloudfiles.py", line 141, in get_endpoint
    if endpoint:
UnboundLocalError: local variable 'endpoint' referenced before assignment

Please see attached patch for a trivial fix. Using the 2.0 endpoint locator
mechanism works fine with 3.x

Issue Links

• links to: GitHub Pull Request #1068