class FilteringControll(object):
def __init__(self, process):
self.process = process
self.serial_comunication = SerialCalls()
def handle_states(self):
state = self.process.state
if state == STATES.get('open_pot_valve'):
logger.info("[Filtering] Function defined: open_pot_valve")
self.open_pot_valve()
elif state == STATES.get('insert_water'):
logger.info("[Filtering] Function defined: insert_water")
self.insert_water()
elif state == STATES.get('check_level'):
logger.info("[Filtering] Function defined: check_level")
self.check_level()
elif state == STATES.get('stop_water'):
logger.info("[Filtering] Function defined: stop_water")
self.stop_water()
def open_pot_valve(self):
now = timezone.now()
minutes = timedelta(minutes=1)
if now > self.process.filtering_init + minutes:
self.process.filtering_init = now
logger.info("[Filtering] 20 minutes after filtering init")
self.serial_comunication.activate_alarm()
self.process.state = STATES.get('insert_water')
self.process.save()
logger.info("[Filtering] State changed! New state: insert_water")
def insert_water(self):
self.serial_comunication.insert_water()
logger.info("[Filtering] Turn on the water")
self.process.state = STATES.get('check_level')
self.process.save()
logger.info("[Filtering] State changed! New state: check_level")
def check_level(self):
logger.info("[Filtering] Checking level of pot2. . .")
now = timezone.now()
minutes = timedelta(minutes=10)
if now > self.process.filtering_init + minutes:
logger.info("[Filtering] Pot water level reached")
self.process.state = STATES.get('stop_water')
self.process.save()
logger.info("[Filtering] State changed! New state: stop_water")
else:
logger.info("[Filtering] Pot water level not reached")
def stop_water(self):
self.serial_comunication.stop_water()
logger.info("[Filtering] Closing valve")
self.process.state = boiling.STATES.get('warm_must')
self.process.save()
self.serial_comunication.turn_on_resistor()
logger.info("[Filtering] State changed! New state: warm_must "
"(from boiling process)")
class PreBreweryControll(object):
def __init__(self, process):
self.process = process
self.valve = Valve.objects.get(pk=1)
self.serial_comunication = SerialCalls()
def handle_states(self):
state = self.process.state
if state == STATES.get('insert_water'):
logger.info("[PreBrewery] Function defined: insert_water")
self.insert_water()
elif state == STATES.get('waiting_water'):
logger.info("[PreBrewery] Function defined: waiting_water")
self.waiting_water()
elif state == STATES.get('stop_water'):
logger.info("[PreBrewery] Function defined: stop_water")
self.stop_water()
def insert_water(self):
self.valve = Valve.objects.get(pk=1)
self.serial_comunication.insert_water()
self.valve.is_opened = 1
self.process.state = STATES.get('waiting_water')
self.process.save()
logger.info("[PreBrewery] State changed! New state: waiting_water")
def waiting_water(self):
now = timezone.now()
waiting_time = timedelta(minutes=self.process.recipe.insert_water_time)
if now > self.process.initial_datetime + waiting_time:
logger.info("[PreBrewery] Pot water level reached")
self.process.state = STATES.get('stop_water')
self.process.save()
logger.info("[PreBrewery] State changed! New state: stop_water")
else:
logger.info("[PreBrewery] Pot water level not reached")
self.process.state = STATES.get('waiting_water')
self.process.save()
def stop_water(self):
self.serial_comunication.stop_water()
self.valve.is_opened = 0
self.process.state = brewery.STATES.get('initial_boiling')
self.process.save()
logger.info("[PreBrewery] State changed! New state: "
"initial_boiling (from brewery process)")
