def scan(self):
'''
scan the queues and create pairs of vehicle--event
'''
# reload work, reload when get device signal
# for vehicle in self._vehicles.getIdleAndEmptyVehicles():
# TaskManager.createReloadTask(vehicle)
for vehicle in self._vehicles.getIdleAndFullVehicles():
TaskManager.createDropTask(vehicle)
# normal work
for queue in self._queues:
# no event
if len(queue) == 0:
continue
# check event nearby vehicle TODO
#
evt = queue[0]
vehicle = self._vehicles.getAvailableVehicleByEvent(evt)
# no available vehicle
if None == vehicle:
continue
queue.popleft()
TaskManager.createNormalTask(evt, vehicle)
