def make_cocktail(slot_volume_dict):
# run a thread for each slot
for el in slot_volume_dict:
gpio_control = GpioControl(slot=el['slot_id'], volume=el['volume'])
gpio_control.start()
# get the timeout delay from this volume and the concerned slot
timeout_delay = get_time_delay_for_slot_and_volume(slot_volume_dict)
print "timeout max: " + str(timeout_delay)
# create file locker
filelock = FileLock("raspidrink", timeout=int(timeout_delay))
filelock.create_lock_file()
