def __validate_netem_parameter(self):
self.validate_bandwidth_rate()
self.__validate_network_delay()
self.__validate_packet_loss_rate()
self.__validate_packet_duplicate_rate()
self.__validate_corruption_rate()
self.__validate_reordering_rate()
self.__validate_reordering_and_delay()
netem_param_value_list = [
self.bandwidth_rate,
self.packet_loss_rate,
self.packet_duplicate_rate,
self.corruption_rate,
self.reordering_rate,
]
if all([
not RealNumber(netem_param_value).is_type()
or netem_param_value <= 0
for netem_param_value in netem_param_value_list
] + [
self.latency_time <= HumanReadableTime(
Tc.ValueRange.LatencyTime.MIN)
]):
raise InvalidParameterError(
"there are no valid net emulation parameters found. "
"at least one or more following parameters are required: "
"--rate, --delay, --loss, --duplicate, --corrupt, --reordering"
)
def __validate_netem_parameter(self):
try:
self.validate_bandwidth_rate()
except EmptyParameterError:
pass
self.__validate_network_delay()
self.__validate_packet_loss_rate()
self.__validate_packet_duplicate_rate()
self.__validate_corruption_rate()
self.__validate_reordering_rate()
self.__validate_reordering_and_delay()
netem_param_value_list = [
self.bandwidth_rate,
self.latency_ms,
self.packet_loss_rate,
self.packet_duplicate_rate,
self.corruption_rate,
self.reordering_rate
]
if all([not RealNumber(
netem_param_value).is_type() or netem_param_value == 0 for
netem_param_value in netem_param_value_list]):
raise ValueError(
"there is no valid net emulation parameter value."
"at least one or more following parameters are required: "
"--rate, --delay, --loss, --corrupt"
)
def is_invalid_param(rate, delay, packet_loss, packet_duplicate, corrupt,
reordering):
param_value_list = [
delay,
packet_loss,
packet_duplicate,
corrupt,
reordering,
]
print(param_value_list)
is_invalid = all([
not RealNumber(param_value).is_type() or param_value <= 0
for param_value in param_value_list
])
try:
Humanreadable(rate, kilo_size=1000).to_bit()
except (TypeError, ValueError):
pass
else:
is_invalid = False
return is_invalid
def validate_bandwidth_rate(self):
if not RealNumber(self.bandwidth_rate).is_type():
raise EmptyParameterError("bandwidth_rate is empty")
if self.bandwidth_rate <= 0:
raise InvalidParameterError(
"rate must be greater than zero: actual={}".format(
self.bandwidth_rate))
def __get_additional_format_len(self):
if not RealNumber(self.data).is_type():
return 0
format_len = 0
if float(self.data) < 0:
# for minus character
format_len += 1
return format_len
def test_normal_send_parse(self, transmitter, ping_parser, host, count):
transmitter.destination_host = host
transmitter.count = count
result = transmitter.ping()
ping_parser.parse(result.stdout)
assert ping_parser.packet_transmit >= count
assert RealNumber(ping_parser.packet_receive).is_type()
assert RealNumber(ping_parser.packet_loss_rate).is_type()
assert RealNumber(ping_parser.packet_loss_count).is_type()
assert RealNumber(ping_parser.packet_duplicate_rate).is_type()
assert RealNumber(ping_parser.packet_duplicate_count).is_type()
assert RealNumber(ping_parser.rtt_min).is_type()
assert RealNumber(ping_parser.rtt_avg).is_type()
assert RealNumber(ping_parser.rtt_max).is_type()
assert RealNumber(ping_parser.rtt_mdev).is_type()
def is_invalid_param(rate, delay, loss, corrupt):
params = [
delay,
loss,
corrupt,
]
is_invalid = all([
not RealNumber(param).is_type() or param == 0 for param in params
])
try:
Humanreadable(rate, kilo_size=1000).to_no_prefix_value()
except ValueError:
pass
else:
is_invalid = False
return is_invalid
def validate_bandwidth_rate(self):
if typepy.is_null_string(self.__bandwidth_rate):
return
# convert bandwidth string [K/M/G bit per second] to a number
bandwidth_rate = Humanreadable(
self.__bandwidth_rate, kilo_size=KILO_SIZE).to_kilo_bit()
if not RealNumber(bandwidth_rate).is_type():
raise InvalidParameterError(
"bandwidth_rate must be a number", value=bandwidth_rate)
if bandwidth_rate <= 0:
raise InvalidParameterError(
"bandwidth_rate must be greater than zero",
value=bandwidth_rate)
no_limit_kbits = get_no_limit_kbits(self.get_tc_device())
if bandwidth_rate > no_limit_kbits:
raise InvalidParameterError(
"bandwidth_rate must be less than {}".format(no_limit_kbits),
value=bandwidth_rate)
def get_integer_digit(value):
from typepy import TypeConversionError
from typepy.type import RealNumber
float_type = RealNumber(value)
try:
abs_value = abs(float_type.convert())
except TypeConversionError:
raise ValueError(
"the value must be a number: value='{}' type='{}'".format(
value, type(value)))
if abs_value.is_zero():
return 1
try:
return len(
str(abs_value.quantize(Decimal("1."),
rounding=decimal.ROUND_DOWN)))
except decimal.InvalidOperation as e:
raise ValueError(e)
def __validate_netem_parameter(self):
try:
self.validate_bandwidth_rate()
except EmptyParameterError:
pass
self.__validate_network_delay()
self.__validate_packet_loss_rate()
self.__validate_corruption_rate()
netem_param_value_list = [
self.bandwidth_rate,
self.latency_ms,
self.packet_loss_rate,
self.corruption_rate,
]
if all([
not RealNumber(netem_param_value).is_type()
or netem_param_value == 0
for netem_param_value in netem_param_value_list
]):
raise ValueError("there is no valid net emulation parameter value")
def update(self, value):
store_value = RealNumber(value).try_convert()
if store_value is None:
return
self.__value_list.append(store_value)