Glance depends on swift client

[Matt Kassawara]

Using the cloud archive repository for Liberty, the glance-api service (2:11.0.0-0ubuntu1~cloud0) appears to depend on the swift client regardless of whether or not the glance configuration uses the swift back-end.

ERROR stevedore.extension [-] Could not load 'glance.store.swift.Store': No module named swiftclient
ERROR stevedore.extension [-] No module named swiftclient
ERROR stevedore.extension Traceback (most recent call last):
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 162, in _load_plugins
ERROR stevedore.extension verify_requirements,
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 183, in _load_one_plugin
ERROR stevedore.extension plugin = ep.resolve()
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2361, in resolve
ERROR stevedore.extension module = __import__(self.module_name, fromlist=['__name__'], level=0)
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/glance_store/_drivers/swift/__init__.py", line 17, in <module>
ERROR stevedore.extension from glance_store._drivers.swift.store import * # noqa
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/glance_store/_drivers/swift/store.py", line 28, in <module>
ERROR stevedore.extension import swiftclient
ERROR stevedore.extension ImportError: No module named swiftclient
ERROR stevedore.extension
ERROR stevedore.extension [-] Could not load 'swift': cannot import name utils
ERROR stevedore.extension [-] cannot import name utils
ERROR stevedore.extension Traceback (most recent call last):
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 162, in _load_plugins
ERROR stevedore.extension verify_requirements,
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 183, in _load_one_plugin
ERROR stevedore.extension plugin = ep.resolve()
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2361, in resolve
ERROR stevedore.extension module = __import__(self.module_name, fromlist=['__name__'], level=0)
ERROR stevedore.extension File "/usr/lib/python2.7/dist-packages/glance_store/_drivers/swift/__init__.py", line 16, in <module>
ERROR stevedore.extension from glance_store._drivers.swift import utils # noqa
ERROR stevedore.extension ImportError: cannot import name utils
ERROR stevedore.extension

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alejandro Comisario (alejandro-f)]

amazing, but true

[Corey Bryant (corey.bryant)]

Looking at the upstream code for glance_store stable/liberty (https://github.com/openstack/glance_store) there are optional dependencies listed in setup.cfg [extras], which include swiftclient. It looks like these need to be added to the package's debian/control Suggests or Depends section for glance_store. Typically we determine package dependencies based on the upstream (test-)requirements.txt, so I think this is a gap in where we're looking for upstream dependencies.

  55 [extras]
  56 # Dependencies for each of the optional stores
  57 s3 =
  58 boto>=2.32.1
  59 vmware =
  60 oslo.vmware>=1.16.0 # Apache-2.0
  61 swift =
  62 httplib2>=0.7.5
  63 python-swiftclient>=2.2.0,<3.0.0
  64 gridfs =
  65 pymongo>=3.0.2
  66 cinder =
  67 python-cinderclient>=1.3.1

[Corey Bryant (corey.bryant)]

After further consultation these should be added to debian/control Suggests since they are optional dependencies.

[Corey Bryant (corey.bryant)]

Matt, I'm going to also target this bug at upstream also since you're saying that you're not using the swift backend but the glance_store code is using the swift driver.

[Ian Cordasco (icordasc)]

Matt, what does your Glance configuration file look like?