new mqtt connection

ttn-vegapulsair-exporter.py

@@ -11,6 +11,9 @@ import time
 import json
 import sys
 import config
+import logging
+import ssl
+
 
 scrape_healthy = True
 startTime = datetime.now()
@@ -214,8 +217,27 @@ def on_message(mqttc, obj, msg):
             scrape_healthy = False
         print(f"Unable to parse uplink: {e}")
 
-def poll_mqtt(mqttc):
-    mqttc.loop_forever()
+def poll_mqtt(mqtt_client):
+    # Start the network loop
+    mqtt_client.loop_forever()
+
+def configure_mqtt_client():
+    client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
+    client.on_connect = on_connect
+    client.on_message = on_message
+    client.on_disconnect = on_disconnect
+
+    # Set credentials
+    client.username_pw_set(config.ttn_user, config.ttn_key)
+
+    # Set up TLS/SSL
+    client.tls_set(
+        cert_reqs=ssl.CERT_REQUIRED,
+        tls_version=ssl.PROTOCOL_TLSv1_2,  # Enforce TLS 1.2
+    )
+    client.tls_insecure_set(False)  # Enforce strict certificate validation
+
+    return client
 
 def main():
     global mqtt_client
@@ -229,29 +251,29 @@ def main():
     reconnect_thread.start()
 
     while True:
+        mqtt_client = configure_mqtt_client()
         try:
-            print("starting ...")
-            mqtt_client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
-            mqtt_client.on_connect = on_connect
-            mqtt_client.on_message = on_message
-            mqtt_client.on_disconnect = on_disconnect
-            mqtt_client.username_pw_set(config.ttn_user, config.ttn_key)
-            mqtt_client.tls_set()
-            mqtt_client.connect(
-                config.ttn_region.lower() + ".cloud.thethings.network", 8883, 60
-            )
-            mqtt_client.subscribe("#", 0)  # all device uplinks
+            # Connect to TTN broker
+            broker_url = f"{config.ttn_region.lower()}.cloud.thethings.network"
+            mqtt_client.connect(broker_url, 8883, 60)
+            
+            # Subscribe to all topics
+            mqtt_client.subscribe("#", 1)
+            logging.info(f"Subscribed to all topics.")
 
             poll_mqtt_thread = threading.Thread(target=poll_mqtt, args=((mqtt_client,)))
             poll_mqtt_thread.start()
+        except Exception as e:
+            logging.error(f"Error occurred: {e}")
+            mqtt_client.loop_stop()
 
-            webServer = HTTPServer((config.hostName, config.serverPort), RequestHandler)
-            print("Server started http://%s:%s" % (config.hostName, config.serverPort))
+        webServer = HTTPServer((config.hostName, config.serverPort), RequestHandler)
+        print("Server started http://%s:%s" % (config.hostName, config.serverPort))
 
-            try:
-                webServer.serve_forever()
-            except KeyboardInterrupt:
-                sys.exit(-1)
+        try:
+            webServer.serve_forever()
+        except KeyboardInterrupt:
+            sys.exit(-1)
 
             webServer.server_close()
             print("Server stopped.")