def bool_from_string(subject, strict=False, default=False):
"""Interpret a string as a boolean.
A case-insensitive match is performed such that strings matching 't',
'true', 'on', 'y', 'yes', or '1' are considered True and, when
`strict=False`, anything else returns the value specified by 'default'.
Useful for JSON-decoded stuff and config file parsing.
If `strict=True`, unrecognized values, including None, will raise a
ValueError which is useful when parsing values passed in from an API call.
Strings yielding False are 'f', 'false', 'off', 'n', 'no', or '0'.
"""
if not isinstance(subject, six.string_types):
subject = six.text_type(subject)
lowered = subject.strip().lower()
if lowered in TRUE_STRINGS:
return True
elif lowered in FALSE_STRINGS:
return False
elif strict:
acceptable = ', '.join("'%s'" % s
for s in sorted(TRUE_STRINGS + FALSE_STRINGS))
msg = _("Unrecognized value '%(val)s', acceptable values are:"
" %(acceptable)s") % {
'val': subject,
'acceptable': acceptable
}
raise ValueError(msg)
else:
return default
def bool_from_string(subject, strict=False, default=False):
"""Interpret a string as a boolean.
A case-insensitive match is performed such that strings matching 't',
'true', 'on', 'y', 'yes', or '1' are considered True and, when
`strict=False`, anything else returns the value specified by 'default'.
Useful for JSON-decoded stuff and config file parsing.
If `strict=True`, unrecognized values, including None, will raise a
ValueError which is useful when parsing values passed in from an API call.
Strings yielding False are 'f', 'false', 'off', 'n', 'no', or '0'.
"""
if not isinstance(subject, six.string_types):
subject = six.text_type(subject)
lowered = subject.strip().lower()
if lowered in TRUE_STRINGS:
return True
elif lowered in FALSE_STRINGS:
return False
elif strict:
acceptable = ', '.join(
"'%s'" % s for s in sorted(TRUE_STRINGS + FALSE_STRINGS))
msg = _("Unrecognized value '%(val)s', acceptable values are:"
" %(acceptable)s") % {'val': subject,
'acceptable': acceptable}
raise ValueError(msg)
else:
return default
def string_to_bytes(text, unit_system='IEC', return_int=False):
"""Converts a string into an float representation of bytes.
The units supported for IEC ::
Kb(it), Kib(it), Mb(it), Mib(it), Gb(it), Gib(it), Tb(it), Tib(it)
KB, KiB, MB, MiB, GB, GiB, TB, TiB
The units supported for SI ::
kb(it), Mb(it), Gb(it), Tb(it)
kB, MB, GB, TB
Note that the SI unit system does not support capital letter 'K'
:param text: String input for bytes size conversion.
:param unit_system: Unit system for byte size conversion.
:param return_int: If True, returns integer representation of text
in bytes. (default: decimal)
:returns: Numerical representation of text in bytes.
:raises ValueError: If text has an invalid value.
"""
try:
base, reg_ex = UNIT_SYSTEM_INFO[unit_system]
except KeyError:
msg = _('Invalid unit system: "%s"') % unit_system
raise ValueError(msg)
match = reg_ex.match(text)
if match:
magnitude = float(match.group(1))
unit_prefix = match.group(2)
if match.group(3) in ['b', 'bit']:
magnitude /= 8
else:
msg = _('Invalid string format: %s') % text
raise ValueError(msg)
if not unit_prefix:
res = magnitude
else:
res = magnitude * pow(base, UNIT_PREFIX_EXPONENT[unit_prefix])
if return_int:
return int(math.ceil(res))
return res
def string_to_bytes(text, unit_system='IEC', return_int=False):
"""Converts a string into an float representation of bytes.
The units supported for IEC ::
Kb(it), Kib(it), Mb(it), Mib(it), Gb(it), Gib(it), Tb(it), Tib(it)
KB, KiB, MB, MiB, GB, GiB, TB, TiB
The units supported for SI ::
kb(it), Mb(it), Gb(it), Tb(it)
kB, MB, GB, TB
Note that the SI unit system does not support capital letter 'K'
:param text: String input for bytes size conversion.
:param unit_system: Unit system for byte size conversion.
:param return_int: If True, returns integer representation of text
in bytes. (default: decimal)
:returns: Numerical representation of text in bytes.
:raises ValueError: If text has an invalid value.
"""
try:
base, reg_ex = UNIT_SYSTEM_INFO[unit_system]
except KeyError:
msg = _('Invalid unit system: "%s"') % unit_system
raise ValueError(msg)
match = reg_ex.match(text)
if match:
magnitude = float(match.group(1))
unit_prefix = match.group(2)
if match.group(3) in ['b', 'bit']:
magnitude /= 8
else:
msg = _('Invalid string format: %s') % text
raise ValueError(msg)
if not unit_prefix:
res = magnitude
else:
res = magnitude * pow(base, UNIT_PREFIX_EXPONENT[unit_prefix])
if return_int:
return int(math.ceil(res))
return res
def __init__(self, requested, permitted):
msg = _("Length of %(given)d is too long, max = %(maximum)d")
message = msg % {'given': requested, 'maximum': permitted}
super(CryptoutilsException, self).__init__(message)
def main():
usage = "usage: %prog [options] name [-l | target message]"
parser = optparse.OptionParser(usage=usage)
parser.add_option("-v",
"--verbose",
dest="verbose",
help=u._("Be verbose."),
action="store_true",
default=False)
parser.add_option('--kite_host',
help=u._('Kite server host address.'),
default="localhost"),
parser.add_option('--kite_port',
help=u._('Kite server port number.'),
default="9109"),
parser.add_option('--key', "-k", help=u._('Optional base64 encoded key.')),
parser.add_option('--queue',
"-q",
help=u._('Message queue url.'),
default="rabbit://localhost"),
parser.add_option('--listen',
"-l",
help=u._('Listen for incoming messages.'),
action="store_true",
default=False),
(options, args) = parser.parse_args()
if not args:
parser.print_usage()
return -1
# NOTE(tkelsey): using developer interface to remove the need to run
# a keystone server.
name = args[0]
host = options.kite_host
port = options.kite_port
kite = "http://%s:%s/v1" % (host, port)
auth = token_endpoint.Token(kite, 'aToken')
transport_obj = transport.Transport(target=name, url=options.queue)
session_obj = session.Session(auth=auth)
client_obj = client.KiteClient(name,
transport_obj,
key=options.key,
session=session_obj,
verbose=options.verbose)
if options.listen:
try:
message = client_obj.recv()
print(message)
except KeyboardInterrupt:
pass
else:
if len(args) < 3:
print("target and message are required when not listening")
parser.print_usage()
return -1
else:
targ = args[1]
body = args[2]
resp = client_obj.send(body, targ)
print(resp)
def __init__(self, requested, permitted):
msg = _("Length of %(given)d is too long, max = %(maximum)d")
message = msg % {'given': requested, 'maximum': permitted}
super(CryptoutilsException, self).__init__(message)
class CryptoutilsException(Exception):
"""Generic Exception for Crypto utilities."""
message = _("An unknown error occurred in crypto utils.")
def main():
usage = "usage: %prog [options] name [-l | target message]"
parser = optparse.OptionParser(usage=usage)
parser.add_option("-v", "--verbose", dest="verbose",
help=u._("Be verbose."), action="store_true",
default=False)
parser.add_option('--kite_host',
help=u._('Kite server host address.'),
default="localhost"),
parser.add_option('--kite_port',
help=u._('Kite server port number.'),
default="9109"),
parser.add_option('--key', "-k",
help=u._('Optional base64 encoded key.')),
parser.add_option('--queue', "-q",
help=u._('Message queue url.'),
default="rabbit://localhost"),
parser.add_option('--listen', "-l",
help=u._('Listen for incoming messages.'),
action="store_true", default=False),
(options, args) = parser.parse_args()
if not args:
parser.print_usage()
return -1
# NOTE(tkelsey): using developer interface to remove the need to run
# a keystone server.
name = args[0]
host = options.kite_host
port = options.kite_port
kite = "http://%s:%s/v1" % (host, port)
auth = token_endpoint.Token(kite, 'aToken')
transport_obj = transport.Transport(target=name, url=options.queue)
session_obj = session.Session(auth=auth)
client_obj = client.KiteClient(name, transport_obj,
key=options.key,
session=session_obj,
verbose=options.verbose)
if options.listen:
try:
message = client_obj.recv()
print(message)
except KeyboardInterrupt:
pass
else:
if len(args) < 3:
print("target and message are required when not listening")
parser.print_usage()
return -1
else:
targ = args[1]
body = args[2]
resp = client_obj.send(body, targ)
print(resp)
