def handler():
"""postfork hanlder, creates global domain object"""
global domain
persistence = Persistence('tve.db')
acquisition = Acquisition('/dev/ttyACM0')
service = Service(persistence)
domain = Domain(persistence, acquisition, service)
logging.basicConfig(level=logging.INFO,
format='%(asctime)s %(levelname)s %(message)s')
logging.info('Domain object initialized')
