class SimpleSensorPublisher(threading.Thread):
def __init__(self, connection, context):
self.logger = logging.getLogger("SimpleSensorPublisher")
self.connection = connection
self.context = context
self.messagebus = context["messagebus"]
self.running = False
self.buffer = SerialBuffer(connection)
threading.Thread.__init__(self)
def run(self):
self.logger.info("Starting")
self.running = True
self.monitor_serial()
def monitor_serial(self):
while self.running:
line = self.buffer.readline()
if line is not None:
self.process_line(line)
self.connection.close()
self.logger.info("Stopped")
def process_line(self, line):
self.logger.debug(line)
message = self.parse_line(line)
if message is not None:
self.process_message(message)
def process_message(self, message):
self.logger.debug(message)
for sensor in message["sensors"]:
self.process_sensor_reading(sensor)
def process_sensor_reading(self, sensor):
name = sensor["name"]
value = sensor["raw_value"]
self.logger.debug("{} = {}".format(name, value))
source = "arduino." + name
data = {"value" : value}
event = Message(source=source, type="reading", data=data)
if self.messagebus is not None:
self.messagebus.send_message(event)
def parse_line(self, line):
try:
message = json.loads(line)
return message
except ValueError as ex:
print ex
return None
def stop(self):
self.running = False
self.logger.info("Stopping")
def __init__(self, connection, context):
self.logger = logging.getLogger("SimpleSensorPublisher")
self.connection = connection
self.context = context
self.messagebus = context["messagebus"]
self.running = False
self.buffer = SerialBuffer(connection)
threading.Thread.__init__(self)