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# Copyright 2017 Hewlett Packard Enterprise Development LP
#
# 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.
__author__ = 'HPE'
import sushy
from proliantutils import exception
from proliantutils import log
from proliantutils.redfish import utils
LOG = log.get_logger(__name__)
def _get_attribute_value_of(resource, attribute_name, default=None):
"""Gets the value of attribute_name from the resource
It catches the exception, if any, while retrieving the
value of attribute_name from resource and returns default.
:param resource: The resource object
:attribute_name: Property of the resource
:returns the property value if no error encountered
else return 0.
"""
try:
return getattr(resource, attribute_name)
except (sushy.exceptions.SushyError,
exception.MissingAttributeError) as e:
msg = (('The Redfish controller failed to get the '
'attribute %(attribute)s from resource %(resource)s. '
'Error %(error)s') % {'error': str(e),
'attribute': attribute_name,
'resource':
resource.__class__.__name__})
LOG.debug(msg)
return default
def get_local_gb(system_obj):
"""Gets the largest volume or the largest disk
:param system_obj: The HPESystem object.
:returns the size in GB
"""
local_max_bytes = 0
logical_max_mib = 0
volume_max_bytes = 0
physical_max_mib = 0
drives_max_bytes = 0
simple_max_bytes = 0
# Gets the resources and properties
# its quite possible for a system to lack the resource, hence its
# URI may also be lacking.
# Check if smart_storage resource exist at the system
smart_resource = _get_attribute_value_of(system_obj, 'smart_storage')
# Check if storage resource exist at the system
storage_resource = _get_attribute_value_of(system_obj, 'storages')
if smart_resource is not None:
logical_max_mib = _get_attribute_value_of(
smart_resource, 'logical_drives_maximum_size_mib', default=0)
if storage_resource is not None:
volume_max_bytes = _get_attribute_value_of(
storage_resource, 'volumes_maximum_size_bytes', default=0)
# Get the largest volume from the system.
local_max_bytes = utils.max_safe([(logical_max_mib * 1024 * 1024),
volume_max_bytes])
# if volume is not found, then traverse through the possible disk drives
# and get the biggest disk.
if local_max_bytes == 0:
if smart_resource is not None:
physical_max_mib = _get_attribute_value_of(
smart_resource, 'physical_drives_maximum_size_mib', default=0)
if storage_resource is not None:
drives_max_bytes = _get_attribute_value_of(
storage_resource, 'drives_maximum_size_bytes', default=0)
# Check if the SimpleStorage resource exist at the system.
simple_resource = _get_attribute_value_of(system_obj,
'simple_storages')
if simple_resource is not None:
simple_max_bytes = _get_attribute_value_of(
simple_resource, 'maximum_size_bytes', default=0)
local_max_bytes = utils.max_safe([(physical_max_mib * 1024 * 1024),
drives_max_bytes, simple_max_bytes])
# Convert the received size to GB and reduce the value by 1 Gb as
# ironic requires the local_gb to be returned 1 less than actual size.
local_gb = 0
if local_max_bytes > 0:
local_gb = int(local_max_bytes / (1024 * 1024 * 1024)) - 1
else:
msg = ('The maximum size for the hard disk or logical '
'volume could not be determined.')
LOG.debug(msg)
return local_gb
def has_ssd(system_obj):
"""Gets if the system has any drive as SSD drive
:param system_obj: The HPESystem object.
:returns True if system has SSD drives.
"""
smart_value = False
storage_value = False
smart_resource = _get_attribute_value_of(system_obj, 'smart_storage')
if smart_resource is not None:
smart_value = _get_attribute_value_of(
smart_resource, 'has_ssd', default=False)
if smart_value:
return smart_value
# Its returned before just to avoid hitting BMC if we have
# already got the SSD device above.
storage_resource = _get_attribute_value_of(system_obj, 'storages')
if storage_resource is not None:
storage_value = _get_attribute_value_of(
storage_resource, 'has_ssd', default=False)
return storage_value
def has_rotational(system_obj):
"""Gets if the system has any drive as HDD drive
:param system_obj: The HPESystem object.
:returns True if system has HDD drives.
"""
smart_value = False
storage_value = False
smart_resource = _get_attribute_value_of(system_obj, 'smart_storage')
if smart_resource is not None:
smart_value = _get_attribute_value_of(
smart_resource, 'has_rotational', default=False)
if smart_value:
return smart_value
# Its returned before just to avoid hitting BMC if we have
# already got the HDD device above.
storage_resource = _get_attribute_value_of(system_obj, 'storages')
if storage_resource is not None:
storage_value = _get_attribute_value_of(
storage_resource, 'has_rotational', default=False)
return storage_value
def has_nvme_ssd(system_obj):
"""Gets if the system has any drive as NVMe SSD drive
:param system_obj: The HPESystem object.
:returns True if system has SSD drives and protocol is NVMe.
"""
storage_value = False
storage_resource = _get_attribute_value_of(system_obj, 'storages')
if storage_resource is not None:
storage_value = _get_attribute_value_of(
storage_resource, 'has_nvme_ssd', default=False)
return storage_value
def get_drive_rotational_speed_rpm(system_obj):
"""Gets the set of rotational speed rpms of the disks.
:param system_obj: The HPESystem object.
:returns the set of rotational speed rpms of the HDD devices.
"""
speed = set()
smart_resource = _get_attribute_value_of(system_obj, 'smart_storage')
if smart_resource is not None:
speed.update(_get_attribute_value_of(
smart_resource, 'drive_rotational_speed_rpm', default=set()))
storage_resource = _get_attribute_value_of(system_obj, 'storages')
if storage_resource is not None:
speed.update(_get_attribute_value_of(
storage_resource, 'drive_rotational_speed_rpm', default=set()))
return speed
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