Fixed database operations in MQTT calls

src/app.py

@@ -11,7 +11,7 @@ from db import db
 from marshm import ma
 from mqtt_flask_instance import mqtt
 
-import mqtt_methods  # This file contains a decorator
+from mqtt_methods import handle_status_message
 
 """
 Main Flask RESTful API
@@ -77,6 +77,14 @@ def handle_connect(client, userdata, flags, rc):
     mqtt.subscribe(f"{MQTT_STATUS_TOPIC}/#")
 
 
+@mqtt.on_topic(f"{config.MQTT_STATUS_TOPIC}/#")
+def handle_status_message_proxy(*args, **kwargs):
+    """
+    This proxy puts the call into a Flask context, so database operations can be performed
+    """
+    with app.app_context():
+        handle_status_message(*args, **kwargs)
+
 api.add_resource(AllDevicesResource, "/devices")
 api.add_resource(AllDevicesOfflineResource, "/devices/offline")
 api.add_resource(AllDevicesOnlineResource, "/devices/online")

src/mqtt_methods.py

@@ -20,7 +20,6 @@ sensorschema = SensorSchema(many=False)
 LOGGER = logging.getLogger(__name__)
 
 
-@mqtt.on_topic(f"{config.MQTT_STATUS_TOPIC}/#")
 def handle_status_message(client, userdata, message):
     data = dict(
         topic=message.topic,