Python MQTTClient.on_message方法代码示例

# 需要导入模块: from Adafruit_IO import MQTTClient [as 别名]
# 或者: from Adafruit_IO.MQTTClient import on_message [as 别名]
def dataAdafruitHandler():
    client = MQTTClient(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)

    client.on_connect    = connected
    client.on_disconnect = disconnected
    client.on_message    = message

    client.connect()
    client.loop_background()
    while True:
        value = random.randint(0, 100)
        print 'Publishing {0} to my-data.'.format(value)
        client.publish('my-data', value)
        time.sleep(5)

# 需要导入模块: from Adafruit_IO import MQTTClient [as 别名]
# 或者: from Adafruit_IO.MQTTClient import on_message [as 别名]
def main():

    # Create a mqttclient
    client = MQTTClient(IO_USERNAME, IO_KEY)

    # Assign handlers for events
    client.on_connect    = connected
    client.on_disconnect = disconnected
    client.on_message    = message

    logger.debug('Connect to Adafruit IO server')
    client.connect()

    logger.debug('Start background thread for messaging')
    client.loop_background()

    temp_buffer = []
    hum_buffer = []
    while True:
        humidity, temperature = measure()
        if humidity is not None and temperature is not None:
            logger.info('Temperature={0:0.1f}, Humidity={1:0.1f}'.format(temperature, humidity))
            temp_buffer.append(temperature)
            hum_buffer.append(humidity)

        # Send median of last three records
        if len(temp_buffer) == BUFFER_SIZE:
            temp_buffer = sorted(temp_buffer)
            temp_median = temp_buffer[BUFFER_SIZE // 2]
            temp_median = round(temp_median, 1)
            logger.debug('Rounded median of temp_buffer({}) is {}'.format(temp_buffer, temp_median))
            publish(client, 'temperature', temp_median)
            temp_buffer = []

        # Send median of last three records
        if len(hum_buffer) == BUFFER_SIZE:
            hum_buffer = sorted(hum_buffer)
            hum_median = hum_buffer[BUFFER_SIZE // 2]
            hum_median = round(hum_median, 1)
            logger.debug('Rounded median of hum_buffer({}) is {}'.format(hum_buffer, hum_median))
            publish(client, 'humidity', hum_median)
            hum_buffer = []

        sleep(TIME_INTERVAL)

# 需要导入模块: from Adafruit_IO import MQTTClient [as 别名]
# 或者: from Adafruit_IO.MQTTClient import on_message [as 别名]
 def test_subscribe_and_publish(self):
     # Create MQTT test client.
     client = MQTTClient(self.get_test_username(), self.get_test_key())
     # Save all on_message handler responses.
     messages = []
     def on_message(mqtt_client, feed, payload):
         self.assertEqual(mqtt_client, client)
         messages.append((feed, payload))
     client.on_message = on_message
     # Connect and wait until on_connect event is fired.
     client.connect()
     self.wait_until_connected(client)
     # Subscribe to changes on a feed.
     client.subscribe('testfeed')
     # Publish a message on the feed.
     client.publish('testfeed', 42)
     # Wait for message to be received or timeout.
     start = time.time()
     while len(messages) == 0 and (time.time() - start) < TIMEOUT_SEC:
         client.loop()
         time.sleep(0)
     # Verify one update message with payload is received.
     self.assertListEqual(messages, [('testfeed', '42')])

# 需要导入模块: from Adafruit_IO import MQTTClient [as 别名]
# 或者: from Adafruit_IO.MQTTClient import on_message [as 别名]
def instance_start(c, name):
 # Using 'c' instead of 'client' for easier reading/writing
 #Last field 'name' of client will be used to set '_instance_name' so we can read a unique name inside callback functions
 logger.info('Setting up instance and connecting: %s', name)
 c['instance'] = MQTTClient(c['USERNAME'], c['PASSWORD'], c['SERVER'], int(c['PORT']), c['CLIENTID'], c['TOPIC_FMT'], name)  # Create MQTTClient instance
 logger.debug("New instance: %s *PASSWORD* %s %s %s %s %s ",c['USERNAME'], c['SERVER'], int(c['PORT']), c['CLIENTID'], c['TOPIC_FMT'], name)
 # Setup the callback functions defined below.
 c['instance'].on_connect    = connected
 c['instance'].on_disconnect = disconnected
 c['instance'].on_message    = message
 #Setup TLS for basic connection encryption (like a web browser using HTTPS)
 # - You can probably do other TLS connection types like pre-shared key authentication if you modify this code and add setting variables
 # For Adafruit, just use normal OS CA lookup bundle file in /etc/ssl/certs/:  (Probably OS-dependent location)
 if c['TLS_SET'] == "1":
   logger.debug("Set TLS: %s", c['CACERT'])
   c['instance'].tls_set(c['CACERT'])  # If you need more of the TLS settings, feel free to add to config file and here.
 # Connect to servers
 # Need to convert these from strings to integers to use for counting
 c['RETRY_COUNTER'] = int(c['RETRY_COUNTER'])
 c['MAX_RETRIES'] = int(c['MAX_RETRIES'])
 while True:   #Loop until complete or retry limit hit
   try:
     c['instance'].connect()  # Try to connect.  Some errors might be fatal.
   except:  # Have only seen 'socket.errors', but could be other kinds
     if c['RETRY_COUNTER'] > c['MAX_RETRIES']:
       logger.critical('Giving up retries to %s (%s).  Terminating process.', c['instance']._service_host, c['instance']._instance_name)
       for name in settings_dict:
        if 'instance' in settings_dict[name]:  #For each existing instance besides this one
         settings_dict[name]['instance'].disconnect()  # Terminate instance
       sys.exit(1)
     logger.error('%s connect error for %s. Retry # %s', str(sys.exc_info()[0]), c['instance']._instance_name, str(c['RETRY_COUNTER']))
     c['RETRY_COUNTER'] += 1;  # Iterate try
     time.sleep(5)  # Delay before retry
   else:
     # Connection Worked.  Reset counter and break loop
     c['RETRY_COUNTER'] = 1;
     break

# 需要导入模块: from Adafruit_IO import MQTTClient [as 别名]
# 或者: from Adafruit_IO.MQTTClient import on_message [as 别名]
def disconnected(client):
    # Disconnected function will be called when the client disconnects.
    print 'Disconnected from Adafruit IO!'
    sys.exit(1)

def message(client, feed_id, payload):
    # Message function will be called when a subscribed feed has a new value.
    # The feed_id parameter identifies the feed, and the payload parameter has
    # the new value.
    print 'Feed {0} received new value: {1}'.format(feed_id, payload)
    # Set a global var with the payload then check for it above
    global msg
    msg = payload

# Create an MQTT client instance
client = MQTTClient(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)

# Setup the callback functions defined above
client.on_connect = connected
client.on_disconnect = disconnected
client.on_message = message

# Connect to the Adafruit IO server
client.connect()

ble.initialize()

ble.run_mainloop_with(ble_main)