class BreweryControll(object):
def __init__(self, process):
self.heat_order = process.recipe.get_heat_order()
process.actual_heat = Heat.objects.get(pk=self.heat_order.get('1'))
process.save()
self.process = process
self.next_heat = '2'
self.serial_comunication = SerialCalls()
def handle_states(self):
state = self.process.state
if state == STATES.get('initial_boiling'):
logger.info("[Brewery] Function defined: initial_boiling")
self.initial_boiling()
elif state == STATES.get('heating'):
self.serial_comunication.turn_on_engine()
self.heating()
elif state == STATES.get('heat_controll'):
logger.info("[Brewery] Function defined: heat_controll")
self.heat_controll()
def initial_boiling(self):
boiling_temperature = self.process.recipe.initial_boiling_temperature
self.serial_comunication.turn_on_resistor(boiling_temperature)
temperature = ThermalSensor.get_current_temperature()
logger.info("[Brewery] Temperature: %.2f" % temperature)
if temperature < boiling_temperature:
logger.info("[Brewery] Actual temperature is lower "
"than %.2f" % boiling_temperature)
self.serial_comunication.turn_on_resistor(boiling_temperature)
pass
else:
logger.info("[Brewery] Actual temperature is greater "
"than %.2f" % boiling_temperature)
self.serial_comunication.turn_off_resistor(1)
self.process.state = STATES.get('insert_malt')
self.serial_comunication.activate_alarm()
logger.info("[Brewery] State changed! New state: insert_malt")
self.process.save()
def heating(self):
self.serial_comunication.turn_on_resistor(
self.process.recipe.boiling_temperature)
logger.info("[Brewery] Function defined: heating")
temperature = ThermalSensor.get_current_temperature()
logger.info("[Brewery] Temperature: %.2f" % temperature)
if temperature < self.process.actual_heat.temperature:
logger.info("[Brewery] Temperature less than actual "
"heat temperature")
self.serial_comunication.turn_on_resistor(
self.process.actual_heat.temperature)
else:
logger.info("[Brewery] Temperature greater than "
"actual_heat temperature")
self.process.actual_heat_time = timezone.now()
self.process.state = STATES.get('heat_controll')
logger.info("[Brewery] State changed! New state: heat_controll")
self.process.save()
def heat_controll(self):
if self.process.change_heat():
logger.info('[Brewery] Previous heating is done. Change heat!')
if self.check_next():
heat = Heat.objects.get(pk=self.get_next_heat())
self.process.next_heat += 1
self.process.actual_heat = heat
self.process.state = STATES.get('heating')
logger.info("[Brewery] State changed! New state: heating")
else:
self.process.state = STATES.get('iodine_test')
self.serial_comunication.activate_alarm()
logger.info("[Brewery] State changed! New state: iodine_test")
else:
# Maintain temperature
pass
self.process.save()
def check_next(self):
if self.process.next_heat <= len(self.heat_order):
return True
else:
return False
def get_next_heat(self):
next_heat = self.process.next_heat
return self.heat_order.get(str(next_heat))
