def wrapper(req, *args, **kwargs):
roughness = req.get('roughness', 1.5)
internal_dimension = get_internal_diameter(req['nominal_diameter'],
req['material'])
if not internal_dimension:
return error_response(400, 'Wrong pipe diameter value.')
if 2 * roughness >= internal_dimension:
return error_response(400, 'Wrong roughness value.')
return func(*args,
req=req,
roughness=roughness,
internal_dimension=internal_dimension,
**kwargs)
def gravity_flow(req):
"""Calculate gravity flow and velocity.
:param req: request.get_json() flask's method to get json from user
"""
height = req['height']
if 'diameter' in req:
diameter = req['diameter']
if height > diameter:
return error_response(400, 'Height couldn\'t be higher than diameter.')
angle = angle_in_partial_filled_pipe(diameter, height)
area = circular_water_cross_sectional_area(angle, diameter, height)
perimeter = circular_wetted_perimeter(angle, diameter)
else:
width = req['width']
area = rectangular_dict(width, height, 'm')
perimeter = rectangular_wetted_perimeter(width, height)
hydraulic_radius_value = hydraulic_radius(area, perimeter)
velocity = manning_equation(hydraulic_radius_value, req['manning_coefficient'], req['slope'])
return api_response(
{
'velocity': round(velocity, 2),
'velocity_unit': 'm/s',
'flow': round(velocity * area * 3600, 2),
'flow_unit': 'm3/h',
}
)
def wrapper(*args, **kwargs):
try:
req = request.get_json()
jsonschema.validate(req, schema)
return func(*args, req=req, **kwargs)
except jsonschema.exceptions.ValidationError as exc:
return error_response(400, exc.message)
def wrapper(req, *args, **kwargs):
if 'power' in req:
power = unit_convertion(req['power'], req['power_unit'], 'W',
'power')
temperature_delta = abs(req['temperature_supply'] -
req['temperature_return'])
if not temperature_delta:
return error_response(
400,
'Temperature supply and return can not have the same value.'
)
flow = power / (temperature_delta * req['density'] *
req['specific_heat'])
req.update({'flow': flow, 'flow_unit': 'm3/s'})
return func(*args, req=req, **kwargs)
def wrong_method(e):
return error_response(405, 'wrong method')
def not_found(e):
return error_response(404, 'not found')