dxspot.py: refactor to use v1 api

dxspot.py

@@ -44,14 +44,14 @@ class EsStatusTracker:
 
 ALL_TRACKERS = [EsStatusTracker(DX_BAND_OPEN_WINDOW, DX_BAND_OPEN_THRESHOLD)]
 
-def on_connect(client, userdata, flags, reason_code, properties):
-    logging.info(f'Connected to MQTT broker: {reason_code}')
+def on_connect(client, userdata, flags, rc):
+    logging.info(f'Connected to MQTT broker: {str(rc)}')
     for topic in PSKREPORT_TOPICS:
         client.subscribe(topic)
 
 def on_message(client, userdata, msg):
     try:
-        spot = json.loads(msg.payload)
+        spot = json.loads(msg.payload.decode())
         tracker = ALL_TRACKERS[0]
     except:
         logging.warning('Failed to parse MQTT message, payload busted')
@@ -71,8 +71,6 @@ def update_image(state, font_path=IMG_FONT, output=IMG_OUT_PATH):
     margin = 6
     height = margin + 22 + 12 * 2 + margin
 
-    font_path = "FSEX302.ttf"
-
     img = Image.new("RGB", (width, height), '#000000')
     draw = ImageDraw.Draw(img)
 
@@ -103,8 +101,7 @@ def update_image(state, font_path=IMG_FONT, output=IMG_OUT_PATH):
     img.save(output)
 
 mqttc = mqtt_client.Client(
-    mqtt_client.CallbackAPIVersion.VERSION2,
-    f'dxspot-{MY_CALL}-{random.randint(0, 1000)}'
+    client_id=f'dxspot-{MY_CALL}-{random.randint(0, 1000)}'
 )
 
 mqttc.on_connect = on_connect