fix: only log config on `debug` log level, fix trtllm warnings (#3590)

Signed-off-by: William Arnold <7565007+Aphoh@users.noreply.github.com>

components/src/dynamo/common/config_dump/config_dumper.py

@@ -98,9 +98,9 @@ def dump_config(dump_config_to: Optional[str], config: Any) -> None:
     Raises:
         Logs errors but does not raise exceptions to ensure graceful degradation.
     """
-    config_dump_payload = get_config_dump(config)
 
     if dump_config_to:
+        config_dump_payload = get_config_dump(config)
         try:
             dump_path = pathlib.Path(dump_config_to)
             dump_path.parent.mkdir(parents=True, exist_ok=True)
@@ -108,13 +108,17 @@ def dump_config(dump_config_to: Optional[str], config: Any) -> None:
                 f.write(config_dump_payload)
             logger.info(f"Dumped config to {dump_path.resolve()}")
         except (OSError, IOError):
-            logger.exception(f"Failed to dump config to {dump_config_to}")
+            logger.exception(
+                f"Failed to dump config to {dump_config_to}, dropping to stdout"
+            )
             logger.info(f"CONFIG_DUMP: {config_dump_payload}")
         except Exception:
-            logger.exception("Unexpected error dumping config")
+            logger.exception("Unexpected error dumping config, dropping to stdout")
             logger.info(f"CONFIG_DUMP: {config_dump_payload}")
-    else:
-        logger.info(f"CONFIG_DUMP: {config_dump_payload}")
+    elif logger.getEffectiveLevel() <= logging.DEBUG:
+        # only collect/dump config if the logger is at DEBUG level or lower
+        config_dump_payload = get_config_dump(config)
+        logger.debug(f"CONFIG_DUMP: {config_dump_payload}")
 
 
 def get_config_dump(config: Any, extra_info: Optional[Dict[str, Any]] = None) -> str:
@@ -183,6 +187,21 @@ def add_config_dump_args(parser: argparse.ArgumentParser):
     )
 
 
+try:
+    # trtllm uses pydantic, but it's not a hard dependency
+    import pydantic
+
+    def try_process_pydantic(obj: Any) -> Optional[dict]:
+        if isinstance(obj, pydantic.BaseModel):
+            return obj.model_dump()
+        return None
+
+except ImportError:
+
+    def try_process_pydantic(obj: Any) -> Optional[dict]:
+        return None
+
+
 @functools.singledispatch
 def _preprocess_for_encode(obj: object) -> object:
     """
@@ -193,6 +212,10 @@ def _preprocess_for_encode(obj: object) -> object:
     """
     if dataclasses.is_dataclass(obj) and not isinstance(obj, type):
         return dataclasses.asdict(obj)
+
+    if (result := try_process_pydantic(obj)) is not None:
+        return result
+
     logger.warning(f"Unknown type {type(obj)}, using __dict__ or str(obj)")
     if hasattr(obj, "__dict__"):
         return obj.__dict__

components/src/dynamo/trtllm/utils/trtllm_utils.py

@@ -8,7 +8,7 @@ from typing import Optional
 from tensorrt_llm.llmapi import BuildConfig
 
 from dynamo._core import get_reasoning_parser_names, get_tool_parser_names
-from dynamo.common.config_dump import add_config_dump_args
+from dynamo.common.config_dump import add_config_dump_args, register_encoder
 from dynamo.trtllm import __version__
 from dynamo.trtllm.request_handlers.handler_base import (
     DisaggregationMode,
@@ -98,6 +98,13 @@ class Config:
         )
 
 
+@register_encoder(Config)
+def _preprocess_for_encode_config(
+    obj: Config,
+) -> dict:  # pyright: ignore[reportUnusedFunction]
+    return obj.__dict__
+
+
 def is_first_worker(config):
     """
     Check if the current worker is the first worker in the disaggregation chain.