def do_subscribe(opts):
LOGGER.info('Starting subscriber...')
try:
dsn = 'dbname={} user={} password={} host={} port={}'.format(
opts.db_name, opts.db_user, opts.db_password, opts.db_host,
opts.db_port)
database = Database(dsn)
database.connect()
subscriber = Subscriber(opts.connect)
subscriber.add_handler(get_events_handler(database))
known_blocks = database.fetch_last_known_blocks(KNOWN_COUNT)
known_ids = [block['block_id'] for block in known_blocks]
subscriber.start(known_ids=known_ids)
except KeyboardInterrupt:
sys.exit(0)
except Exception as err: # pylint: disable=broad-except
LOGGER.exception(err)
sys.exit(1)
finally:
try:
database.disconnect()
subscriber.stop()
except UnboundLocalError:
pass
LOGGER.info('Subscriber shut down successfully')