reraise as a unknown codec error

Author: keewis

src/zarr/core/metadata/v3.py

@@ -34,7 +34,7 @@
 )
 from zarr.core.config import config
 from zarr.core.metadata.common import parse_attributes
-from zarr.errors import MetadataValidationError, NodeTypeValidationError
+from zarr.errors import MetadataValidationError, NodeTypeValidationError, UnknownCodecError
 from zarr.registry import get_codec_class
 
 
@@ -63,7 +63,11 @@ def parse_codecs(data: object) -> tuple[Codec, ...]:
             out += (c,)
         else:
             name_parsed, _ = parse_named_configuration(c, require_configuration=False)
-            out += (get_codec_class(name_parsed).from_dict(c),)
+
+            try:
+                out += (get_codec_class(name_parsed).from_dict(c),)
+            except KeyError as e:
+                raise UnknownCodecError(e.args[0]) from e
 
     return out