def send_request(self, value):
msg = IpcMessage("cmd", value)
success, reply = self._send_message(msg)
if success:
return reply
else:
self._raise_reply_error(msg, reply)
def _send_message(self, msg, timeout=1000):
self.logger.debug("Sending control message:\n%s", msg.encode())
with self._lock:
self.ctrl_channel.send(msg.encode())
pollevts = self.ctrl_channel.poll(timeout)
if pollevts == zmq.POLLIN:
reply = IpcMessage(from_str=self.ctrl_channel.recv())
if reply.is_valid() and reply.get_msg_type() == IpcMessage.ACK:
self.logger.debug("Request successful")
return True, reply.attrs
else:
self.logger.debug("Request unsuccessful")
return False, reply.attrs
else:
self.logger.warning("Received no response")
return False, None
def send_configuration(self, content, target=None, valid_error=None):
msg = IpcMessage("cmd", "configure")
if target is not None:
msg.set_param(target, content)
else:
for parameter, value in content.items():
msg.set_param(parameter, value)
success, reply = self._send_message(msg)
if not success and None not in [reply, valid_error]:
if reply["params"]["error"] != valid_error:
self._raise_reply_error(msg, reply)
else:
self.logger.debug("Got valid error for request %s: %s", msg,
reply)
return success, reply
def while_waiting(self):
if self.parentApp._running == True:
millis = int(round(time.time() * 1000))
if millis > (self.parentApp._last_millis + int(1000 / self.parentApp._frame_rate)):
msg = IpcMessage("notify", "frame_ready")
msg.set_param("frame", self.parentApp._frames_sent)
buff_id = self.parentApp._frames_sent % self.parentApp._frames
msg.set_param("buffer_id", buff_id)
self.parentApp.send_message(msg)
self.parentApp._frames_sent = self.parentApp._frames_sent + 1
self.parentApp._last_millis = millis
if self.parentApp._frames_sent == self.parentApp._no_of_frames:
self.parentApp._running = False
self.t3.values = ["Running: " + str(self.parentApp._running),
"Frames: " + str(self.parentApp._frames_sent)]
self.t3.display()
self.t2.entry_widget.value = None
self.t2.entry_widget._old_value = None
self.t2.display()
def _read_message(self, timeout):
pollevts = self.ctrl_channel.poll(timeout)
if pollevts == zmq.POLLIN:
reply = IpcMessage(from_str=self.ctrl_channel.recv())
return reply