chore(logging): use stdlib logger with plain format strings for auth forwarding

pallas/_fastagent_patch.py

@@ -23,7 +23,7 @@ from fast_agent.config import MCPServerSettings as _MCPServerSettings
 from fast_agent.mcp import mcp_connection_manager as _mcm
 from fast_agent.mcp.auth.context import request_bearer_token
 
-logger = logging.getLogger(__name__)
+logger = logging.getLogger("pallas.forward")
 
 _AUTH_HEADER_KEYS = {"authorization", "x-hf-authorization"}
 _original_prepare = _mcm._prepare_headers_and_auth
@@ -35,41 +35,33 @@ def _prepare_headers_and_auth_with_forward(server_config, **kwargs):
     server_name = getattr(server_config, "name", None)
     forward_flag = getattr(server_config, "forward_inbound_auth", False)
 
+    logger.info(
+        "forward_check server=%s forward_flag=%s",
+        server_name, forward_flag,
+    )
+
     if not forward_flag:
         return headers, oauth_auth, user_auth_keys
 
     if user_auth_keys:
-        logger.info(
-            "fastagent_forward_skipped_user_auth",
-            extra={"server": server_name},
-        )
+        logger.info("forward_skipped_user_auth server=%s", server_name)
         return headers, oauth_auth, user_auth_keys
 
     if oauth_auth is not None:
-        logger.info(
-            "fastagent_forward_skipped_oauth",
-            extra={"server": server_name},
-        )
+        logger.info("forward_skipped_oauth server=%s", server_name)
         return headers, oauth_auth, user_auth_keys
 
     inbound = request_bearer_token.get()
     if not inbound:
-        logger.info(
-            "fastagent_forward_no_inbound",
-            extra={"server": server_name},
-        )
+        logger.info("forward_no_inbound server=%s", server_name)
         return headers, oauth_auth, user_auth_keys
 
     headers = dict(headers)
     headers["Authorization"] = f"Bearer {inbound}"
     user_auth_keys = set(user_auth_keys) | {"Authorization"}
     logger.info(
-        "fastagent_forward_inbound_auth",
-        extra={
-            "server": server_name,
-            "token_len": len(inbound),
-            "token_prefix": inbound[:8],
-        },
+        "forward_inbound_auth server=%s token_len=%d prefix=%s",
+        server_name, len(inbound), inbound[:8],
     )
     return headers, oauth_auth, user_auth_keys
 

pallas/multimodal_server.py

@@ -46,6 +46,8 @@ def _get_request_bearer_token() -> str | None:
     the request scope, so get_access_token() always returns None here. The token
     is an opaque string forwarded to opted-in downstream servers by _fastagent_patch.
     """
+    import logging as _stdlib_logging
+    _diag = _stdlib_logging.getLogger("pallas.bearer")
     try:
         from fastmcp.server.dependencies import get_http_request
 
@@ -53,17 +55,14 @@ def _get_request_bearer_token() -> str | None:
         auth = request.headers.get("authorization", "")
         if auth.lower().startswith("bearer "):
             token = auth[7:]
-            logger.info(
-                "pallas_inbound_bearer_captured",
-                data={"token_len": len(token), "token_prefix": token[:8]},
+            _diag.info(
+                "pallas_inbound_bearer_captured token_len=%d prefix=%s",
+                len(token), token[:8],
             )
             return token
-        logger.info(
-            "pallas_inbound_bearer_absent",
-            data={"has_auth_header": bool(auth)},
-        )
+        _diag.info("pallas_inbound_bearer_absent has_auth_header=%s", bool(auth))
     except Exception as exc:
-        logger.warning("pallas_inbound_bearer_error", data={"error": str(exc)})
+        _diag.warning("pallas_inbound_bearer_error error=%s", exc)
     return None