Attempt to hotfix coffee scale crash

coffee_scale/__init__.py

@@ -1,3 +1,6 @@
 from . import mqtt
+import logging
+logger = logging.getLogger(__name__)
 
+logger.debug('Starting mqtt loop')
 mqtt.client.loop_start()

coffee_scale/mqtt.py

@@ -3,6 +3,8 @@ import logging
 import datetime
 from collections import deque
 
+MQTT_HOST = "mqtt.sik.party"
+
 TOPIC_TEMP = "sik/kiltahuone/kahvivaaka/temperature"
 TOPIC_WEIGHT = "sik/kiltahuone/kahvivaaka/weight"
 
@@ -31,10 +33,10 @@ def on_message(client, userdata, msg):
 
 
 def on_disconnect(client, userdata, rc):
-    client.loop_stop(force=False)
     if rc != 0:
         print("Unexpected disconnection.")
     else:
+        client.loop_stop(force=False)
         print("Disconnected")
 
 
@@ -62,4 +64,11 @@ client.on_connect = on_connect
 client.on_message = on_message
 client.on_disconnect = on_disconnect
 
-client.connect("mqtt.sik.party", 1883, 60)
+
+try:
+    logging.info('Connecting to MQTT at {}...'.format(MQTT_HOST))
+    client.connect_async(MQTT_HOST, 1883, 60)
+    logging.info('Connected successfully to MQTT.')
+except Exception as ex:
+    logging.error(ex)
+    logging.error('Failed to connect to MQTT at {}'.format(MQTT_HOST))

coffee_scale/views.py

@@ -3,9 +3,15 @@ from django.http import JsonResponse
 
 import datetime
 from .mqtt import get_latest
-
 import coffee_scale.mqtt  # somehow this is needed
 
+import logging
+from django.conf import settings
+
+logger = logging.getLogger(__name__)
+logging.basicConfig(format='[%(levelname)s]%(asctime)s %(message)s',
+                    level=settings.LOGGERLEVEL, filename=settings.LOGPATH)
+
 
 def get_cups_from_weight(weight):
     if not weight:
@@ -21,7 +27,7 @@ def get_cups_from_weight(weight):
     if cups > 10:
         cups = 10
 
-    print("cups: ", cups, "weight: ", weight)
+    logger.debug("cups: {}, weight: {}".format(cups, weight))
     return cups