stats: use persistent UUID identifier

rhodecode/lib/utils.py

@@ -900,9 +900,27 @@ def generate_platform_uuid():
     Generates platform UUID based on it's name
     """
     import platform
+    import uuid
+
+    def generate_stable_v5_uuid():
+        """Generates a stable, repeatable Version 5 UUID based on the MAC address."""
+        # Use a fixed, arbitrary UUID as the namespace for the machine IDs.
+        # This ensures that all generated IDs are distinct from standard UUID namespaces.
+        machine_namespace = uuid.UUID("10000000-0000-0000-0000-000000000001")
+
+        # Get the 48-bit MAC address as an integer
+        mac_int = uuid.getnode()
+
+        # Convert MAC address integer to a string name
+        mac_str = str(mac_int)
+
+        # Create the Version 5 UUID (SHA-1 hash of Namespace + MAC string)
+        stable_uuid = uuid.uuid5(machine_namespace, mac_str)
+
+        return str(stable_uuid)
 
     try:
-        uuid_list = [platform.platform()]
+        uuid_list = [platform.platform(), generate_stable_v5_uuid()]
         return sha256_safe(":".join(uuid_list))
     except Exception as e:
         log.error("Failed to generate host uuid: %s", e)