def _extract_bytes(self, details):
# Replace it with the byte amount
real_size = self.SIZE_RE.search(details)
if not real_size:
raise ValueError(_('Invalid input value "%s".') % details)
magnitude = real_size.group(1)
unit_of_measure = real_size.group(2)
bytes_info = real_size.group(3)
if bytes_info:
return int(real_size.group(4))
elif not unit_of_measure:
return int(magnitude)
return strutils.string_to_bytes("%s%sB" % (magnitude, unit_of_measure), return_int=True)
def _extract_bytes(self, details):
# Replace it with the byte amount
real_size = self.SIZE_RE.search(details)
if not real_size:
raise ValueError(_('Invalid input value "%s".') % details)
magnitude = real_size.group(1)
unit_of_measure = real_size.group(2)
bytes_info = real_size.group(3)
if bytes_info:
return int(real_size.group(4))
elif not unit_of_measure:
return int(magnitude)
return strutils.string_to_bytes('%s%sB' % (magnitude, unit_of_measure),
return_int=True)
def _calculate_count(size_in_m, blocksize):
# Check if volume_dd_blocksize is valid
try:
# Rule out zero-sized/negative/float dd blocksize which
# cannot be caught by strutils
if blocksize.startswith(('-', '0')) or '.' in blocksize:
raise ValueError
bs = strutils.string_to_bytes('%sB' % blocksize)
except ValueError:
msg = (_("Incorrect value error: %(blocksize)s, "
"it may indicate that \'volume_dd_blocksize\' "
"was configured incorrectly. Fall back to default.")
% {'blocksize': blocksize})
LOG.warn(msg)
# Fall back to default blocksize
CONF.clear_override('volume_dd_blocksize')
blocksize = CONF.volume_dd_blocksize
bs = strutils.string_to_bytes('%sB' % blocksize)
count = math.ceil(size_in_m * units.Mi / bs)
return blocksize, int(count)
def test_string_to_bytes(self):
def _get_quantity(sign, magnitude, unit_suffix):
res = float('%s%s' % (sign, magnitude))
if unit_suffix in ['b', 'bit']:
res /= 8
return res
def _get_constant(unit_prefix, unit_system):
if not unit_prefix:
return 1
elif unit_system == 'SI':
res = getattr(units, unit_prefix)
elif unit_system == 'IEC':
if unit_prefix.endswith('i'):
res = getattr(units, unit_prefix)
else:
res = getattr(units, '%si' % unit_prefix)
return res
text = ''.join(
[self.sign, self.magnitude, self.unit_prefix, self.unit_suffix])
err_si = self.unit_system == 'SI' and (self.unit_prefix == 'K' or
self.unit_prefix.endswith('i'))
err_iec = self.unit_system == 'IEC' and self.unit_prefix == 'k'
if getattr(self, 'assert_error', False) or err_si or err_iec:
self.assertRaises(ValueError,
strutils.string_to_bytes,
text,
unit_system=self.unit_system,
return_int=self.return_int)
return
quantity = _get_quantity(self.sign, self.magnitude, self.unit_suffix)
constant = _get_constant(self.unit_prefix, self.unit_system)
expected = quantity * constant
actual = strutils.string_to_bytes(text,
unit_system=self.unit_system,
return_int=self.return_int)
if self.return_int:
self.assertEqual(actual, int(math.ceil(expected)))
else:
self.assertAlmostEqual(actual, expected)
def test_string_to_bytes(self):
def _get_quantity(sign, magnitude, unit_suffix):
res = float('%s%s' % (sign, magnitude))
if unit_suffix in ['b', 'bit']:
res /= 8
return res
def _get_constant(unit_prefix, unit_system):
if not unit_prefix:
return 1
elif unit_system == 'SI':
res = getattr(units, unit_prefix)
elif unit_system == 'IEC':
if unit_prefix.endswith('i'):
res = getattr(units, unit_prefix)
else:
res = getattr(units, '%si' % unit_prefix)
return res
text = ''.join([self.sign, self.magnitude, self.unit_prefix,
self.unit_suffix])
err_si = self.unit_system == 'SI' and (self.unit_prefix == 'K' or
self.unit_prefix.endswith('i'))
err_iec = self.unit_system == 'IEC' and self.unit_prefix == 'k'
if getattr(self, 'assert_error', False) or err_si or err_iec:
self.assertRaises(ValueError, strutils.string_to_bytes,
text, unit_system=self.unit_system,
return_int=self.return_int)
return
quantity = _get_quantity(self.sign, self.magnitude, self.unit_suffix)
constant = _get_constant(self.unit_prefix, self.unit_system)
expected = quantity * constant
actual = strutils.string_to_bytes(text, unit_system=self.unit_system,
return_int=self.return_int)
if self.return_int:
self.assertEqual(actual, int(math.ceil(expected)))
else:
self.assertAlmostEqual(actual, expected)