async def _extract_port_from_spawned_companion(stream: asyncio.StreamReader) -> int:
# The first line of stdout should contain launch info,
# otherwise something bad has happened
line = await stream.readline()
logging.debug(f"Read line from companion: {line}")
update = parse_json_line(line)
logging.debug(f"Got update from companion: {update}")
return int(update["grpc_port"])
async def _read_notifier_output(self, stream: asyncio.StreamReader) -> None:
while True:
line = await stream.readline()
if line is None:
return
update = parse_json_line(line)
if update["report_initial_state"]:
return