LCORE-1375: minor updates in sources

Author: tisnik

src/llama_stack_configuration.py

@@ -8,7 +8,7 @@
 import os
 from argparse import ArgumentParser
 from pathlib import Path
-from typing import Any
+from typing import Any, Optional
 
 import yaml
 from azure.core.exceptions import ClientAuthenticationError
@@ -44,7 +44,7 @@ def increase_indent(self, flow: bool = False, indentless: bool = False) -> None:
 
 
 def setup_azure_entra_id_token(
-    azure_config: dict[str, Any] | None, env_file: str
+    azure_config: Optional[dict[str, Any]], env_file: str
 ) -> None:
     """Generate Azure Entra ID access token and write to .env file.
 

src/observability/splunk.py

@@ -2,7 +2,7 @@
 
 import platform
 import time
-from typing import Any
+from typing import Any, Optional
 
 import aiohttp
 
@@ -18,7 +18,7 @@ def _get_hostname() -> str:
     return platform.node() or "unknown"
 
 
-def _read_token_from_file(token_path: str) -> str | None:
+def _read_token_from_file(token_path: str) -> Optional[str]:
     """Read HEC token from file path."""
     try:
         with open(token_path, encoding="utf-8") as f:

src/utils/mcp_oauth_probe.py

@@ -1,5 +1,6 @@
 """Probe MCP server for OAuth and raise 401 with WWW-Authenticate when required."""
 
+from typing import Optional
 import aiohttp
 from fastapi import HTTPException
 
@@ -12,7 +13,7 @@
 
 async def probe_mcp_oauth_and_raise_401(
     url: str,
-    chain_from: BaseException | None = None,
+    chain_from: Optional[BaseException] = None,
 ) -> None:
     """Probe MCP endpoint and raise 401 so the client can perform OAuth.
 

src/utils/prompts.py

@@ -1,13 +1,14 @@
 """Utility functions for system prompts."""
 
+from typing import Optional
 from fastapi import HTTPException
 
 import constants
 from configuration import configuration
 from models.responses import UnprocessableEntityResponse
 
 
-def get_system_prompt(system_prompt: str | None) -> str:
+def get_system_prompt(system_prompt: Optional[str]) -> str:
     """
     Resolve which system prompt to use for a query.