rbd StopIteration Incompatible with py37

[Attila Fazekas]

glance with ceph backed failed during

$ stestr run tempest.api.image.v2.test_images.BasicOperationsImagesTest.test_deactivate_reactivate_image .

https://github.com/openstack/glance_store/blob/db75918208ed8e8f6754cb5377196f781745d533/glance_store/_drivers/rbd.py#L244

Related PEP:
https://www.python.org/dev/peps/pep-0479/

Feb 09 16:30:31 f29-dev-02 glance-api[9702]: 2019-02-09 16:30:31.166 9842 INFO eventlet.wsgi.server [req-883a29ae-b94e-4f84-84a2-0785166c6b24 331d3b4e54b84dec818f60c8811779bf 643c8c215d184bc18c06f8842b3b3ead - >
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: File "/usr/local/lib/python3.7/site-packages/glance_store/_drivers/rbd.py", line 244, in __iter__
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: raise StopIteration()
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: StopIteration
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: The above exception was the direct cause of the following exception:
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: Traceback (most recent call last):
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: File "/usr/local/lib/python3.7/site-packages/eventlet/wsgi.py", line 563, in handle_one_response
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: for data in result:
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: File "/opt/stack/glance/glance/notifier.py", line 403, in _get_chunk_data_iterator
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: for chunk in data:
Feb 09 16:30:31 f29-dev-02 glance-api[9702]: RuntimeError: generator raised StopIteration
Feb 09 16:30:31 f29-dev-02 glance-api[9702]:

[Cyril Roelandt (cyril-roelandt)]

I proposed a patch: https://review.openstack.org/#/c/636194/

Could you test it and confirm that it fixes your issue?

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/636194
Committed: https://git.openstack.org/cgit/openstack/glance_store/commit/?id=d54ee8437fc2d74573229ce21789b6eb4acb4a45
Submitter: Zuul
Branch: master

commit d54ee8437fc2d74573229ce21789b6eb4acb4a45
Author: Cyril Roelandt <email address hidden>
Date: Mon Feb 11 18:56:21 2019 +0100

    Do not raise StopIteration

    The current code will not work in Python3.7 because of PEP479. This
    commit fixes it so that it works with both 3.6 and 3.7.

    [1] https://www.python.org/dev/peps/pep-0479/

    Closes-bug: #1815335
    Change-Id: I6adf23e0569db8655806a07d53c5000f5fd0918f

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/glance_store 0.28.0 release.