Hi, I'm looking to make use of https://github.com/apache/beam/issues/23373 so I can use a java avro schema with enums xlang from python.
Are there existing ideas on how to implement this? I tried taking a look and the Python SDK has a very simple map from concrete python type to logical type, which doesn't seem sufficient to encode additional type info from an argument, since a map from class to logical type and the associated _from_typing(class) conversion doesn't maintain any arguments. I tried comparing this with the Java SDK, but it looks like it has a full abstraction around a schema model, which directly encodes the logical arg type/arg from the protobuf and then handles the conversions implicitly somehow/elsewhere. As far as I could tell, this abstraction is missing from python, in the sense that schemas_test.py roundtrips proto classes through concrete python types like typing.Mapping[typing.Optional[numpy.int64], bytes] rather than an SDK-defined schema class. The simplest solution might be to just update language_type() to return a tuple of class, arg, and register that in the logical type mapping. Does this make sense?
