def test_get_nested_attr(self):
expected_attr = Mock()
intermediate_attr = Mock(spec=["expected_attr"])
containing_obj = Mock(spec=["intermediate_attr"])
intermediate_attr.expected_attr = expected_attr
containing_obj.intermediate_attr = intermediate_attr
existing_attr_path = ["intermediate_attr", "expected_attr"]
self.assertEqual(
expected_attr,
utils.get_nested_attr(containing_obj, existing_attr_path))
missing_attrs_pathes = [
["missing_attr", "expected_attr"],
["intermediate_attr", "missing_attr"],
]
for attr_path in missing_attrs_pathes:
self.assertIsNone(utils.get_nested_attr(containing_obj, attr_path))
def test_get_nested_attr(self):
expected_attr = Mock()
intermediate_attr = Mock(spec=["expected_attr"])
containing_obj = Mock(spec=["intermediate_attr"])
intermediate_attr.expected_attr = expected_attr
containing_obj.intermediate_attr = intermediate_attr
existing_attr_path = ["intermediate_attr", "expected_attr"]
self.assertEqual(
expected_attr,
utils.get_nested_attr(containing_obj, existing_attr_path)
)
missing_attrs_pathes = [
["missing_attr", "expected_attr"],
["intermediate_attr", "missing_attr"],
]
for attr_path in missing_attrs_pathes:
self.assertIsNone(
utils.get_nested_attr(containing_obj, attr_path)
)
def get_info_from_os_resource_manager(client_provider, resource_name):
"""Use OpenStack resource manager to retrieve information about resource
Utilize clients provided by client_provider instance to retrieve
data for resource_name, description of which is stored in
resources_description data structure.
:param client_provider: objects that provides instances of openstack
clients as its attributes
:param resource_name: string that contains name of resource for which
info should be collected from installation
:returns: data that store collected info
"""
resource_description = resources_description[resource_name]
client_name = resource_description["retrieved_from_component"]
client_inst = getattr(client_provider, client_name)
client_api_version = utils.get_nested_attr(
client_inst,
client_provider.clients_version_attr_path[client_name]
)
matched_api = \
resource_description["supported_api_versions"][client_api_version]
resource_manager_name = matched_api["resource_manager_name"]
resource_manager = getattr(client_inst, resource_manager_name)
attributes_white_list = matched_api["attributes_white_list"]
additional_display_options = \
matched_api.get("additional_display_options", {})
resource_info = _get_data_from_resource_manager(
resource_manager,
attributes_white_list,
additional_display_options
)
return resource_info
def get_info_from_os_resource_manager(client_provider, resource_name):
"""Use OpenStack resource manager to retrieve information about resource
Utilize clients provided by client_provider instance to retrieve
data for resource_name, description of which is stored in
resources_description data structure.
:param client_provider: objects that provides instances of openstack
clients as its attributes
:param resource_name: string that contains name of resource for which
info should be collected from installation
:returns: data that store collected info
"""
resource_description = resources_description[resource_name]
client_name = resource_description["retrieved_from_component"]
client_inst = getattr(client_provider, client_name)
client_api_version = utils.get_nested_attr(
client_inst, client_provider.clients_version_attr_path[client_name])
matched_api = \
resource_description["supported_api_versions"][client_api_version]
resource_manager_name = matched_api["resource_manager_name"]
resource_manager = getattr(client_inst, resource_manager_name)
attributes_white_list = matched_api["attributes_white_list"]
additional_display_options = \
matched_api.get("additional_display_options", {})
resource_info = _get_data_from_resource_manager(
resource_manager, attributes_white_list, additional_display_options)
return resource_info