47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
# This file is part of Compute
|
|
#
|
|
# Compute is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# Ansible is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
"""Tools for data units convertion."""
|
|
|
|
from enum import StrEnum
|
|
|
|
from compute.exceptions import InvalidDataUnitError
|
|
|
|
|
|
class DataUnit(StrEnum):
|
|
"""Data units enumerated."""
|
|
|
|
BYTES = 'bytes'
|
|
KIB = 'KiB'
|
|
MIB = 'MiB'
|
|
GIB = 'GiB'
|
|
TIB = 'TiB'
|
|
|
|
|
|
def to_bytes(value: int, unit: DataUnit = DataUnit.BYTES) -> int:
|
|
"""Convert value to bytes. See :class:`DataUnit`."""
|
|
try:
|
|
_ = DataUnit(unit)
|
|
except ValueError as e:
|
|
raise InvalidDataUnitError(e, list(DataUnit)) from e
|
|
powers = {
|
|
DataUnit.BYTES: 0,
|
|
DataUnit.KIB: 1,
|
|
DataUnit.MIB: 2,
|
|
DataUnit.GIB: 3,
|
|
DataUnit.TIB: 4,
|
|
}
|
|
return value * pow(1024, powers[unit])
|