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# Copyright 2016 OpenStack Foundation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import operator
from tempest.api.volume import base
from tempest.lib import decorators
class BackendsCapabilitiesAdminTestsJSON(base.BaseVolumeAdminTest):
"""Test backends capabilities"""
@classmethod
def resource_setup(cls):
super(BackendsCapabilitiesAdminTestsJSON, cls).resource_setup()
# Get host list, formation: host@backend-name
cls.hosts = [
pool['name'] for pool in
cls.admin_scheduler_stats_client.list_pools()['pools']
]
@decorators.idempotent_id('3750af44-5ea2-4cd4-bc3e-56e7e6caf854')
def test_get_capabilities_backend(self):
"""Test getting backend capabilities"""
# Check response schema
self.admin_capabilities_client.show_backend_capabilities(self.hosts[0])
@staticmethod
def _change_capabilities_storage_protocol(capabilities):
"""Convert storage_protocol to its canonical version"""
# List of storage protocols variants defined in cinder.common.constants
# The canonical name for storage protocol comes first in the list
VARIANTS = [['iSCSI', 'iscsi'], ['FC', 'fibre_channel', 'fc'],
['NFS', 'nfs'], ['NVMe-oF', 'NVMeOF', 'nvmeof']]
capabilities = sorted(list(capabilities))
# Cinder Bug #1966103: Some drivers were reporting different strings
# to represent the same storage protocol. For backward compatibility,
# the scheduler can handle the variants, but to standardize this for
# operators (who may need to refer to the protocol in volume-type
# extra-specs), the get-pools and get-capabilities response was changed
# to only report the canonical name for a storage protocol, but these
# 2 REST API call swere not changed simultaneously, so we may or may
# not get canonical names, so just convert canonical names.
for item in range(len(capabilities)):
for variants in VARIANTS:
if capabilities[item][2] in variants:
capabilities[item] = (capabilities[item][0],
capabilities[item][1],
variants[0])
return capabilities
@decorators.idempotent_id('a9035743-d46a-47c5-9cb7-3c80ea16dea0')
def test_compare_volume_stats_values(self):
"""Test comparing volume stats values
Compare volume stats between show_backend_capabilities and show_pools.
"""
VOLUME_STATS = ('vendor_name',
'volume_backend_name',
'storage_protocol')
# Get list backend capabilities using show_pools
cinder_pools = [
pool['capabilities'] for pool in
self.admin_scheduler_stats_client.list_pools(detail=True)['pools']
]
# Get list backends capabilities using show_backend_capabilities
capabilities = [
self.admin_capabilities_client.show_backend_capabilities(
host=host) for host in self.hosts
]
# Returns a tuple of VOLUME_STATS values
expected_list = self._change_capabilities_storage_protocol(
map(operator.itemgetter(*VOLUME_STATS), cinder_pools))
observed_list = self._change_capabilities_storage_protocol(
map(operator.itemgetter(*VOLUME_STATS), capabilities))
self.assertEqual(expected_list, observed_list)
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