50 lines
1.8 KiB
Python
50 lines
1.8 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Utility Classes For Ochestrator"""
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import re
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import drydock_provisioner.error as errors
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class SimpleBytes():
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def calculate_bytes(size_str):
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"""
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Calculate the size in bytes of a size_str.
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#m or #M or #mb or #MB = # * 1024 * 1024
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#g or #G or #gb or #GB = # * 1024 * 1024 * 1024
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#t or #T or #tb or #TB = # * 1024 * 1024 * 1024 * 1024
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:param size_str: A string representing the desired size
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:return size: The calculated size in bytes
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"""
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pattern = r'(\d+)([mMbBgGtT]{1,2})'
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regex = re.compile(pattern)
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match = regex.match(size_str)
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if not match:
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raise errors.InvalidSizeFormat(
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"Invalid size string format: %s" % size_str)
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base_size = int(match.group(1))
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if match.group(2) in ['m', 'M', 'mb', 'MB']:
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computed_size = base_size * (1000 * 1000)
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elif match.group(2) in ['g', 'G', 'gb', 'GB']:
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computed_size = base_size * (1000 * 1000 * 1000)
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elif match.group(2) in ['t', 'T', 'tb', 'TB']:
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computed_size = base_size * (1000 * 1000 * 1000 * 1000)
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return computed_size
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