Serving not working with datetime64 numpy env.

[fengyu05]

Expected Behavior

should work.

Current Behavior

Serving not working with datetime64 numpy env.

  File "/Users/zf/go/src/github.com/opendoor-labs/code/py/.venv/lib/python3.9/site-packages/feast/type_map.py", line 332, in python_values_to_proto_values
    return _python_value_to_proto_value(value_type, values)
  File "/Users/zf/go/src/github.com/opendoor-labs/code/py/.venv/lib/python3.9/site-packages/feast/type_map.py", line 293, in _python_value_to_proto_value
    return [ProtoValue(int64_val=int(value)) for value in values]
  File "/Users/zf/go/src/github.com/opendoor-labs/code/py/.venv/lib/python3.9/site-packages/feast/type_map.py", line 293, in <listcomp>
    return [ProtoValue(int64_val=int(value)) for value in values]
TypeError: int() argument must be a string, a bytes-like object or a number, not 'datetime.datetime'

Steps to reproduce

Serve a feature

Specifications

• Version:
• Platform:
• Subsystem:

Possible Solution

Fix:
https://github.com/feast-dev/feast/blob/master/sdk/python/feast/type_map.py#L292

++ this to type map

            elif isinstance(sample, np.datetime64):
                return [
                ProtoValue(int64_val=int(pd.Timestamp(value).to_pydatetime().timestamp())) for value in values
                ]

72bae7d

[judahrand]

Would you be able to open a Pull Request with this fix?