63 lines
2.0 KiB
Python
63 lines
2.0 KiB
Python
# Copyright 2020 Inspur Electronic Information Industry Co.,LTD.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Cyborg Generic SSD driver implementation.
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"""
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from oslo_log import log as logging
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from cyborg.accelerator.common import utils as pci_utils
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from cyborg.accelerator.drivers.ssd import utils
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LOG = logging.getLogger(__name__)
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VENDOR_MAPS = pci_utils.get_vendor_maps()
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class SSDDriver(object):
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"""Generic class for SSD drivers.
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This is just a virtual SSD drivers interface.
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Vendor should implement their specific drivers.
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"""
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@classmethod
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def create(cls, vendor=None, *args, **kwargs):
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if not vendor:
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return cls(*args, **kwargs)
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for sclass in cls.__subclasses__():
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vendor_name = VENDOR_MAPS.get(vendor, vendor)
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if vendor_name == sclass.VENDOR:
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return sclass(*args, **kwargs)
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raise LookupError("Not find the SSD driver for vendor %s" % vendor)
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def discover(self):
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"""Discover SSD information of current vendor(Identified by class).
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If no vendor-specific driver provided, this will return all NVMe SSD
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devices
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:return: List of SSD information dict.
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"""
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LOG.info('The method "discover" is called in generic.SSDDriver')
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devs = utils.discover_ssds()
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return devs
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@classmethod
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def discover_vendors(cls):
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"""Discover SSD vendors of current node.
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:return: SSD vendor ID list.
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"""
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return utils.discover_vendors()
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