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[v2] Implement Placement allocationcandidates - #3708
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Related #526 API reference: https://docs.openstack.org/api-ref/placement/#list-allocation-candidates Code reference: https://opendev.org/openstack/placement/src/branch/stable/2026.1/placement/handlers/allocation_candidate.py#L256-L304 Signed-off-by: Dominik Danelski <[email protected]>
Full deserialisation could crash on older structure defined for 1.10. Co-authored-by: Martin André <[email protected]> Signed-off-by: Dominik Danelski <[email protected]>
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The allocationcandidates test fixtures import internal/ptr but the package was missing from this branch, causing a linter typecheck failure. Partial backport from #3190.
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coverage: 63.809% (+0.03%) from 63.778% — bp-v2-15c319c-0f34606 into v2 |
mandre
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Apr 10, 2026
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Backport: #3701
Related #526
API reference:
https://docs.openstack.org/api-ref/placement/#list-allocation-candidates
Code reference:
https://opendev.org/openstack/placement/src/branch/stable/2026.1/placement/handlers/allocation_candidate.py#L256-L304
I didn't create separate microversions for every change when an argument could be repeated starting from … (change from
stringto[]string), since one can create a single-element slice, so the request can still be expressed using this structure for any microversion 1.12+ unlike the array to map transition at 1.11 to 1.12. Having separate microversions for every such change would balloon the number of structures and related tests to 5+.I also made the newer request structure the default and put the one from the first 2 microversions (1.10-1.11) in microversions.go, as the old version was made in 2018 and there's a low chance one would default to the original shape, which is very limited in expressiveness of request and response.
Please let me know if any of these decisions would prevent this patch from being merged.