thermostat working

tools/device_simulator.py

@@ -19,6 +19,7 @@ import logging
 import os
 import signal
 import sys
+import uuid
 from datetime import datetime
 from typing import Dict, Any
 
@@ -224,11 +225,16 @@ class DeviceSimulator:
     
     async def run(self):
         """Main simulator loop."""
+        # Generate unique client ID to avoid collisions
+        base_client_id = "device_simulator"
+        client_suffix = os.environ.get("MQTT_CLIENT_ID_SUFFIX") or uuid.uuid4().hex[:6]
+        unique_client_id = f"{base_client_id}-{client_suffix}"
+        
         try:
             async with Client(
                 hostname=BROKER_HOST,
                 port=BROKER_PORT,
-                identifier="device_simulator"
+                identifier=unique_client_id
             ) as client:
                 self.client = client
                 logger.info(f"✅ Connected to MQTT broker {BROKER_HOST}:{BROKER_PORT}")