def _validate_instantiation_props(self, prop, prop_name, default_value):
""" Method to determine if instantiation properties like batch_size, flush_interval
and timeout_interval are valid.
Args:
prop: Property value that needs to be validated.
prop_name: Property name.
default_value: Default value for property.
Returns:
False if property value is None or less than or equal to 0 or not a finite number.
False if property name is batch_size and value is a floating point number.
True otherwise.
"""
is_valid = True
if prop is None or not validator.is_finite_number(prop) or prop <= 0:
is_valid = False
if prop_name == 'batch_size' and not isinstance(prop, numbers.Integral):
is_valid = False
if is_valid is False:
self.logger.info('Using default value {} for {}.'.format(default_value, prop_name))
return is_valid
def test_is_finite_number(self):
""" Test that it returns true if value is a number and not NAN, INF, -INF or greater than 2^53.
Otherwise False.
"""
# test non number values
self.assertFalse(validator.is_finite_number('HelloWorld'))
self.assertFalse(validator.is_finite_number(True))
self.assertFalse(validator.is_finite_number(False))
self.assertFalse(validator.is_finite_number(None))
self.assertFalse(validator.is_finite_number({}))
self.assertFalse(validator.is_finite_number([]))
self.assertFalse(validator.is_finite_number(()))
# test invalid numbers
self.assertFalse(validator.is_finite_number(float('inf')))
self.assertFalse(validator.is_finite_number(float('-inf')))
self.assertFalse(validator.is_finite_number(float('nan')))
self.assertFalse(validator.is_finite_number(int(2**53) + 1))
self.assertFalse(validator.is_finite_number(-int(2**53) - 1))
self.assertFalse(validator.is_finite_number(float(2**53) + 2.0))
self.assertFalse(validator.is_finite_number(-float(2**53) - 2.0))
if PY2:
self.assertFalse(validator.is_finite_number(long(2**53) + 1))
self.assertFalse(validator.is_finite_number(-long(2**53) - 1))
# test valid numbers
self.assertTrue(validator.is_finite_number(0))
self.assertTrue(validator.is_finite_number(5))
self.assertTrue(validator.is_finite_number(5.5))
# float(2**53) + 1.0 evaluates to float(2**53)
self.assertTrue(validator.is_finite_number(float(2**53) + 1.0))
self.assertTrue(validator.is_finite_number(-float(2**53) - 1.0))
self.assertTrue(validator.is_finite_number(int(2**53)))
if PY2:
self.assertTrue(validator.is_finite_number(long(2**53)))