Add celery task for config update

app/celery_builder.py

@@ -1,4 +1,5 @@
 # App initialization
+import sys
 from flask import Flask
 from .tasks import celery as celery_configurator
 
@@ -7,3 +8,35 @@ app.config.from_object('config')
 app.config.from_pyfile('config.py', silent=True)
 app.config['MQTT_CLIENT_ID'] = 'final-iot-backend-server-worker'
 celery = celery_configurator.make_celery(app)
+
+
+@celery.task()
+def send_config(device_id, config):
+    from flask_mqtt import Mqtt, MQTT_ERR_SUCCESS
+    mqtt = Mqtt(app)
+
+    @mqtt.on_log()
+    def handle_logging(client, userdata, level, buf):
+        print(level, buf)
+
+    @mqtt.on_connect()
+    def handle_connect(client, userdata, flags, rc):
+        print('MQTT worker client connected')
+        print("Sending configuration to device: " + str(device_id))
+        print("Configuration: " + str(config))
+        topic = 'device/' + str(device_id) + '/config'
+        print("Targeting topic: " + topic)
+        try:
+            (result, mid) = mqtt.publish(topic, config, 2)
+            if (result == MQTT_ERR_SUCCESS):
+                print("Success!!!")
+            print("Result: " + str(result))
+            print("Message id: " + str(mid))
+            mqtt.client.disconnect()
+        except Exception:
+            print("ERROR!")
+            error_type, error_instance, traceback = sys.exc_info()
+            print("Type: " + str(error_type))
+            print("Instance: " + str(error_instance))
+            mqtt.client.disconnect()
+            return

app/devices/__init__.py

@@ -48,11 +48,11 @@ def set_device_configuration(device_id, configuration_json):
     :type configuration_json: JSON
     :rtype: Boolean
     """
-    from app.mqtt.mqtt_client import MqttClient
+    from app.celery_builder import send_config
     device = Device.get(id=device_id)
     device.configuration = configuration_json
     device.save()
-    MqttClient.send_config(device_id, str(configuration_json))
+    send_config.delay(device_id, str(configuration_json))
 
 
 def get_device_configuration(device_id):

app/mqtt/mqtt_client.py

@@ -1,6 +1,6 @@
 import sys
 import json
-from flask_mqtt import Mqtt, MQTT_ERR_SUCCESS
+from flask_mqtt import Mqtt
 import app.devices as devices
 
 
@@ -74,22 +74,3 @@ class MqttClient:
             return int(device_id)
         else:
             raise ValueError("Topic is in invalid format")
-
-    @staticmethod
-    def send_config(device_id, config):
-        print("Sending configuration to device: " + str(device_id))
-        print("Configuration: " + str(config))
-        topic = 'device/' + str(device_id) + '/config'
-        print("Targeting topic: " + topic)
-        try:
-            (result, mid) = MqttClient.mqtt.publish(topic, config, 2)
-            if (result == MQTT_ERR_SUCCESS):
-                print("Success!!!")
-            print("Result: " + str(result))
-            print("Message id: " + str(mid))
-        except Exception:
-            print("ERROR!")
-            error_type, error_instance, traceback = sys.exc_info()
-            print("Type: " + str(error_type))
-            print("Instance: " + str(error_instance))
-            return