def post_telemetry(self, message): # pylint: disable=no-self-use
"""End point for receiving telemetry readings. Some phones don't support
websockets, so just use plain old POST.
"""
try:
message = json.loads(str(message))
if 'latitude_d' in message:
TelemetryProducer().gps_reading(
message['latitude_d'],
message['longitude_d'],
message['accuracy_m'],
message['heading_d'],
message['speed_m_s'],
message['timestamp_s'],
message['device_id'],
)
elif 'compass_d' in message:
TelemetryProducer().compass_reading(
message['compass_d'],
message['confidence'],
message['device_id'],
)
else:
AsyncLogger().error(
'Received unexpected web telemetry message: {}'.format(
message))
except Exception as exc: # pylint: disable=broad-except
AsyncLogger().error(
'Invalid POST telemetry message "{}": {} {}'.format(
message, type(exc), exc))
return {'success': False, 'message': str(exc)}
return {'success': True}
def received_message(message):
"""Handler for receiving a message on the websocket."""
try:
if message.is_binary:
# TODO(2016-08-13) Log an error
return
message = json.loads(str(message))
if 'latitude_d' in message:
TelemetryProducer().gps_reading(
message['latitude_d'],
message['longitude_d'],
message['accuracy_m'],
message['heading_d'],
message['speed_m_s'],
message['timestamp_s'],
message['device_id'],
)
elif 'compass_d' in message:
TelemetryProducer().compass_reading(
message['compass_d'],
message['confidence'],
message['device_id'],
)
else:
AsyncLogger().error(
'Received unexpected web telemetry message: "{}"'.format(
message))
# We need to catch all exceptions because any that are raised will close
# the websocket
except Exception as exc: # pylint: disable=broad-except
AsyncLogger().error(
'Error processing web telemetry message "{}": {} {}'.format(
message, type(exc), exc))
def __init__(self, serial):
"""Create the TelemetryData thread."""
super(Sup800fTelemetry, self).__init__()
self.name = self.__class__.__name__
self._telemetry = TelemetryProducer()
self._serial = serial
self._logger = AsyncLogger()
self._run = True
self._iterations = 0
# These initial measurements are from a calibration observation
self._compass_offsets = (-11.87, -5.97)
self._magnitude_mean = 353.310
self._magnitude_std_dev = 117.918
self._calibrate_compass_end_time = None
self._nmea_mode = True
self._last_compass_heading_d = 0.0
self._dropped_compass_messages = 0
self._dropped_threshold = 10
self._hdop = 5.0
def handle_message(message):
"""Handles command messages. Only cares about calibrate compass;
other messages are ignored.
"""
if message == 'calibrate-compass':
self.calibrate_compass(10)
consume = lambda: consume_messages(config.COMMAND_FORWARDED_EXCHANGE,
handle_message)
thread = threading.Thread(target=consume)
thread.name = '{}:consume_messages:{}'.format(
self.__class__.__name__, config.COMMAND_FORWARDED_EXCHANGE)
thread.start()