ENH: Graceful metadata validation

src/fmu/dataio/_utils.py

@@ -11,16 +11,19 @@
 from copy import deepcopy
 from datetime import datetime
 from pathlib import Path
+from pprint import pformat
 from typing import Any, Final, Literal
 
 import pandas as pd
 import xtgeo
 import yaml
+from pydantic import ValidationError
 
 from fmu.config import utilities as ut
 
 from . import _design_kw
 from ._logging import null_logger
+from .datastructure.meta import meta
 
 logger: Final = null_logger(__name__)
 
@@ -82,6 +85,15 @@ def export_metadata_file(
             "Export of metadata was requested, but no metadata are present."
         )
 
+    try:
+        meta.Root.model_validate(metadata)
+    except ValidationError as e:
+        logger.warning(
+            "Unable to validate metadata(%s)",
+            pformat(metadata, indent=2),
+            exc_info=e,
+        )
+
     if savefmt == "yaml":
         with open(file, "w", encoding="utf8") as stream:
             stream.write(