def update_resource_provider_inventories(
self,
resource_provider_uuid,
inventories,
resource_provider_generation=None):
"""Replaces the set of inventory records for a resource provider.
:param resource_provider_uuid: UUID of the resource provider.
:param inventories: The inventories. A dict in the format (see:
Placement API ref: https://goo.gl/F22mtk)
{resource_class(required):
{allocation_ratio(required):
total(required):
max_unit(required):
min_unit(required):
reserved(required):
step_size(required):
}}
:param resource_provider_generation: The generation of the resource
provider. Optional.
:raises PlacementResourceProviderNotFound: if the resource provider
is not found.
:raises PlacementResourceProviderGenerationConflict: if the generation
of the resource
provider does not
match with the
server side.
:returns: The updated set of inventory records.
"""
if resource_provider_generation is None:
resource_provider_generation = self.get_resource_provider(
resource_provider_uuid=resource_provider_uuid)['generation']
url = '/resource_providers/%s/inventories' % resource_provider_uuid
body = {
'resource_provider_generation': resource_provider_generation,
'inventories': inventories
}
try:
return self._put(url, body).json()
except ks_exc.NotFound:
raise n_exc.PlacementResourceProviderNotFound(
resource_provider=resource_provider_uuid)
except ks_exc.Conflict:
raise n_exc.PlacementResourceProviderGenerationConflict(
resource_provider=resource_provider_uuid,
generation=resource_provider_generation)
def _put_with_retry_for_generation_conflict(
self,
url,
body,
resource_provider_uuid,
resource_provider_generation=None):
if resource_provider_generation is None:
# If the client's user did not supply a generation to us we dare to
# retry without handing the control back to our caller.
max_tries = GENERATION_CONFLICT_RETRIES
else:
# If the client's user supplied a generation to us we don't dare to
# retry on her behalf since we don't know her intention.
max_tries = 1
body['resource_provider_generation'] = resource_provider_generation
for i in range(max_tries):
if resource_provider_generation is None:
# In the bodies of
# PUT /resource_providers/{uuid}/traits
# PUT /resource_providers/{uuid}/inventories
# PUT /resource_providers/{uuid}/inventories/{resource_class}
# resource_provider_generation happens to be at the same place.
body['resource_provider_generation'] = \
self.get_resource_provider(
resource_provider_uuid=resource_provider_uuid)[
'generation']
try:
return self._put(url, body).json()
except ks_exc.Conflict as e:
if e.response.json(
)['errors'][0]['code'] == 'placement.concurrent_update':
continue
else:
raise
raise n_exc.PlacementResourceProviderGenerationConflict(
resource_provider=resource_provider_uuid,
generation=body['resource_provider_generation'])