Merged in bugfix/background-tasks (pull request #3)

Fix celery task runner and task import

.env

@@ -1,3 +1,4 @@
 DATABASE_URL="postgresql://localhost"
 REDIS_URL=redis://localhost:6379
 CELERY_TASK_SERIALIZER=json
+DEBUG=True

Procfile

@@ -1,3 +1,3 @@
 release: ./release-tasks.sh
 web: gunicorn app.core:app -w 4 --preload
-worker: celery -A app.celery_builder.celery worker
+worker: celery -A app.celery_builder.task_builder worker

app/celery_builder.py

@@ -7,3 +7,4 @@ app.config.from_object('config')
 app.config.from_pyfile('config.py', silent=True)
 app.config['MQTT_CLIENT_ID'] = 'final-iot-backend-server-worker'
 task_builder = make_celery(app)
+task_builder.autodiscover_tasks(['app.devices'])

app/devices/tasks.py

@@ -1,12 +1,12 @@
 import sys
 from app.celery_builder import task_builder
-from .blueprint import devices_bp
+from flask import current_app as app
 
 
 @task_builder.task()
 def send_config(device_id, config):
     from flask_mqtt import Mqtt, MQTT_ERR_SUCCESS
-    mqtt = Mqtt(devices_bp)
+    mqtt = Mqtt(app)
 
     @mqtt.on_log()
     def handle_logging(client, userdata, level, buf):

config.py

@@ -1,7 +1,7 @@
 import os
 
 # App configuration
-DEBUG = False
+DEBUG = os.environ['DEBUG']
 
 # Define the application directory
 BASE_DIR = os.path.abspath(os.path.dirname(__file__))