add logging for debugging

run.py

@@ -1,4 +1,5 @@
 import asyncio
+import logging
 import os
 import toml
 import paho.mqtt.client as mqtt
@@ -25,15 +26,20 @@ async def main():
 
     mqtt_client = mqtt.Client()
     mqtt_client.username_pw_set(config["mqtt"]["username"], config["mqtt"]["password"])
+    try:
         mqtt_client.connect(config["mqtt"]["broker"], config["mqtt"]["port"])
+    except:
+        logging.error("Invalid credentials, check your configuration.")
+        exit(2)
 
     while True:
         item = await queue.get()
+        logging.debug(item)
         for i in item.data:
             return_code, _ = mqtt_client.publish(f"{config['mqtt']['topic']}/{item.name}/{i}", item.data[i])
-            if return_code == 4:
-                print("Invalid credentials, check your configuration.")
-                exit(1)
+            if return_code != 0:
+                await queue.put(item)
+                mqtt_client.reconnect()
 
 
 if __name__ == '__main__':