command check - fix subscriber

wallet_api/mqtt.py

@@ -0,0 +1,32 @@
+import paho.mqtt.client as mqtt
+
+MQTT_SERVER="10.211.114.214"
+MQTT_PORT=1883
+MQTT_KEEPALIVE=60
+MQTT_USER="pippo"
+MQTT_PASSWORD="batt1l0"
+MQTT_DS_TOPIC="$CONTROL/dynamic-security/v1"
+
+def on_connect(mqtt_client, userdata, flags, rc, properties):
+    if rc == 0:
+        print('Connected successfully. Properties:', properties)
+        mqtt_client.subscribe(MQTT_TOPIC)
+    else:
+        print('Bad connection. Code:', rc)
+
+def on_disconnect(mqtt_client, obj, flags, rc, properties):
+    print('disconnected. Code:', rc)
+
+def on_message(mqtt_client, userdata, msg):
+    print(f'Received message on topic: {msg.topic} with payload: {msg.payload}')
+
+client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, protocol=mqtt.MQTTv5)
+client.on_connect = on_connect
+client.on_disconnect = on_disconnect
+client.on_message = on_message
+client.username_pw_set(MQTT_USER, MQTT_PASSWORD)
+client.connect(
+    host=MQTT_SERVER,
+    port=MQTT_PORT,
+    keepalive=MQTT_KEEPALIVE
+)