stores-info --detail command fails if swift store is enabled

[Abhishek Kekane]

If you enable swift store in multiple stores setup then glance stores-info --detail or glance stores-info command fails with 500 error "oslo_config.cfg.NoSuchOptError: no such option store_description in group [dummy]".

Note: This error only occurs when you specify "swift_store_config_file = /etc/glance/glance-swift-store.conf and swift_store_multi_tenant = True" for swift store. Ideally it is recommended not to use "swift_store_config_file" when multi tenant is enabled for swift but it should not fail with 500 error and give appropriate 400 BadRequest error to the user.

Sample configuration glance-api.conf:

[DEFAULT]
enabled_backends = dummy:swift

[dummy]
swift_store_multi_tenant = True
default_swift_reference = ref1
swift_store_config_file = /etc/glance/glance-swift-store.conf
swift_store_create_container_on_put = True
store_description = "This is swift store"

Also in second scenario if you set swift store as below in glance-api.conf then it gives 500 error "Apr 17 04:40:20 akekane-zed-dev glance-api[3389648]: ERROR glance.common.wsgi [None req-7dcd5c18-7b31-43e5-9b22-77e20505cab7 admin admin] Caught error: 'MultiTenantStore' object has no attribute 'container': AttributeError: 'MultiTenantStore' object has no attribute 'container'" fot glance stores-info --detail command

[dummy]
swift_store_multi_tenant = True
default_swift_reference = ref1
swift_store_create_container_on_put = True
store_description = "This is swift store"

Ideally in scenario 1 glance stores-info --detail command should raise 400 Bad Request and for scenario 2 we need to identify what is ideal configuration for swift multi tenant and return the response accordingly.

[Pranali Deore (pranali-deore)]

While reproducing this issue, I noticed that image-create also fails with same 500 error if "swift_store_config_file = /etc/glance/glance-swift-store.conf and swift_store_multi_tenant = True" are specified dor swift store.

$ glance image-create --name testing-swift-1 --container-format bare --disk-format qcow2 --file requirements.txt --store dummy
HTTP 500 Internal Server Error: The server has either erred or is incapable of performing the requested operation.

g-api error: "oslo_config.cfg.NoSuchOptError: no such option store_description in group [dummy]".

The fix would be common for both store-info & image-create since get_stores_detail() internally calls get_stores().

Regarding scenario 2: swift container value can be return as None if it's not set.

In case of swift multitenant enabled, swift recreates the conatiner[1] during image create if it's not set during store configuration. So incase of multitenant enabled, container value could be return None if it's not set while fetching the store details.

[1]: https://github.com/openstack/glance_store/blob/142593aaee5b34115f493a9a04aab0ec4cbf1846/glance_store/_drivers/swift/store.py#L938

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/glance/+/920170