def StreamCall(
self, request_iterator: Iterable[phone_pb2.StreamCallRequest],
context: grpc.ServicerContext
) -> Iterable[phone_pb2.StreamCallResponse]:
try:
request = next(request_iterator)
logging.info("Received a phone call request for number [%s]",
request.phone_number)
except StopIteration:
raise RuntimeError("Failed to receive call request")
# Simulate the acceptance of call request
time.sleep(1)
yield create_state_response(phone_pb2.CallState.NEW)
# Simulate the start of the call session
time.sleep(1)
call_info = self._create_call_session()
context.add_callback(lambda: self._clean_call_session(call_info))
response = phone_pb2.StreamCallResponse()
response.call_info.session_id = call_info.session_id
response.call_info.media = call_info.media
yield response
yield create_state_response(phone_pb2.CallState.ACTIVE)
# Simulate the end of the call
time.sleep(2)
yield create_state_response(phone_pb2.CallState.ENDED)
logging.info("Call finished [%s]", request.phone_number)
def create_state_response(
call_state: phone_pb2.CallState.State) -> phone_pb2.StreamCallResponse:
response = phone_pb2.StreamCallResponse()
response.call_state.state = call_state
return response