db: Remove use of 'as_scalar()'

Resolve the following RemovedIn20Warning warning:

  The SelectBase.as_scalar() method is deprecated and will be removed in
  a future release.

Change-Id: If1179e8d94cce54cdc8ac1a30eb63a3bf943042d
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
changes/56/837356/3
Stephen Finucane 10 months ago
parent dce5f293f5
commit 3073d698f0

@ -3361,8 +3361,15 @@ def volume_qos_allows_retype(new_vol_type):
specifies anything other than the back-end in any of the 2 volume_types.
"""
# Query to get the qos of the volume type new_vol_type
q = sql.select(models.VolumeType.qos_specs_id).where(
and_(~models.VolumeType.deleted, models.VolumeType.id == new_vol_type)
q = (
sql.select(models.VolumeType.qos_specs_id)
.where(
and_(
~models.VolumeType.deleted,
models.VolumeType.id == new_vol_type,
)
)
.scalar_subquery()
)
# Construct the filter to check qos when volume is 'in-use'
return or_(
@ -3373,7 +3380,7 @@ def volume_qos_allows_retype(new_vol_type):
and_(
~models.VolumeType.deleted,
models.VolumeType.id == models.Volume.volume_type_id,
models.VolumeType.qos_specs_id == q.as_scalar(),
models.VolumeType.qos_specs_id == q,
)
),
# Or they are different specs but they are handled by the backend or

@ -197,13 +197,6 @@ class WarningsFixture(fixtures.Fixture):
category=sqla_exc.SADeprecationWarning,
)
warnings.filterwarnings(
'ignore',
module='cinder',
message=r'The SelectBase.as_scalar\(\) method is deprecated ',
category=sqla_exc.SADeprecationWarning,
)
warnings.filterwarnings(
'ignore',
module='cinder',

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