e33d6bfb0b
In some modules the global LOG is not used any more. And the import of logging is not used. This patch removes the unused logging import and LOG vars. Co-Authored-By: ChangBo Guo(gcb) <eric.guo@easystack.cn> Change-Id: Ia72f99688ce00aeecca9239f9ef123611259a2fa
64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
# Copyright (c) 2014 Navneet Singh. All rights reserved.
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# Copyright (c) 2014 Clinton Knight. All rights reserved.
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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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Utilities for NetApp E-series drivers.
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"""
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import base64
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import binascii
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import uuid
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import six
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MULTI_ATTACH_HOST_GROUP_NAME = 'cinder-multi-attach'
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NULL_REF = '0000000000000000000000000000000000000000'
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MAX_LUNS_PER_HOST = 256
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MAX_LUNS_PER_HOST_GROUP = 256
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def encode_hex_to_base32(hex_string):
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"""Encodes hex to base32 bit as per RFC4648."""
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bin_form = binascii.unhexlify(hex_string)
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return base64.b32encode(bin_form)
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def decode_base32_to_hex(base32_string):
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"""Decodes base32 string to hex string."""
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bin_form = base64.b32decode(base32_string)
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return binascii.hexlify(bin_form)
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def convert_uuid_to_es_fmt(uuid_str):
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"""Converts uuid to e-series compatible name format."""
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uuid_base32 = encode_hex_to_base32(uuid.UUID(six.text_type(uuid_str)).hex)
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es_label = uuid_base32.strip(b'=')
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if six.PY3:
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es_label = es_label.decode('ascii')
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return es_label
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def convert_es_fmt_to_uuid(es_label):
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"""Converts e-series name format to uuid."""
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if isinstance(es_label, six.text_type):
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es_label = es_label.encode('utf-8')
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if es_label.startswith(b'tmp-'):
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es_label = es_label[4:]
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es_label = es_label.ljust(32, b'=')
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es_label = binascii.hexlify(base64.b32decode(es_label))
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if six.PY3:
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es_label = es_label.decode('ascii')
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return uuid.UUID(es_label)
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