def run(self):
print("Running..")
brews = 1
brewcount = 0
# add the pumps
hlt_recirc = Pump(Pump.PUMP_BROWN)
mlt_recirc = Pump(Pump.PUMP_MARCH)
transfer = Pump(Pump.PUMP_MARCH)
# This will run forever.
while True:
# Initially this will just be doing a single batch at a time
# but this could allow recipes to be stacked.
try:
# load the recipe xml
recipe = Recipe('step_mash_recipe.xml')
# parse the recipe xml
recipe.parse()
except Exception as e:
error_str = "Recipe parsing failed!"
self.logger.critical(error_str)
print(error_str)
print("Mash steps are:")
mash_steps = recipe.get_mash_steps()
for steps in mash_steps:
print(steps.tag, steps.attrib)
for step in steps:
print(step.tag, step.text)
# setup the vessels
self.vessel_hlt = VesselHlt(self.logger, self.dbconn)
self.vessel_hlt.strike_in_mlt(self.strike_in_mlt)
self.vessel_hlt.set_target_strike_time() # UNIX timestamp
self.vessel_hlt.add_steps(recipe.get_mash_steps())
self.vessel_mlt = VesselMlt(self.logger, self.dbconn)
self.vessel_mlt.strike_in_mlt(self.strike_in_mlt)
self.vessel_mlt.add_steps(recipe.get_mash_steps())
self.vessel_ktl = VesselKettle(self.logger, self.dbconn)
self.sensor_logger = SensorLogger(self.logger, self.dbconn)
self.control = ControlInterface(self.logger, self.dbconn)
children = []
# Create forks for each vessel.
# from http://www.petercollingridge.co.uk/blog/running-multiple-processes-python
start_time = time.time()
processes = self.VESSEL_COUNT + 2 # number of vessels plus the logger and webservice threads
for process in range(self.VESSEL_COUNT):
pid = os.fork()
if pid:
children.append(pid)
else:
self.processLauncher(process)
os._exit(0)
# Wait for all the vessels to complete.
for i, child in enumerate(children):
os.waitpid(child, 0)
brewcount += 1
if (brewcount == brews):
print("All batches completed. Exiting.")
os._exit(0)
