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feature.py
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64 lines (57 loc) · 2.26 KB
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# Copyright 2019 The Feast Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from feast.core.FeatureSet_pb2 import FeatureSpec as FeatureProto
from feast.field import Field
from feast.types import Value_pb2 as ValueTypeProto
from feast.value_type import ValueType
class Feature(Field):
"""Feature field type"""
def to_proto(self) -> FeatureProto:
"""Converts Feature object to its Protocol Buffer representation"""
value_type = ValueTypeProto.ValueType.Enum.Value(self.dtype.name)
return FeatureProto(
name=self.name,
value_type=value_type,
presence=self.presence,
group_presence=self.group_presence,
shape=self.shape,
value_count=self.value_count,
domain=self.domain,
int_domain=self.int_domain,
float_domain=self.float_domain,
string_domain=self.string_domain,
bool_domain=self.bool_domain,
struct_domain=self.struct_domain,
natural_language_domain=self.natural_language_domain,
image_domain=self.image_domain,
mid_domain=self.mid_domain,
url_domain=self.url_domain,
time_domain=self.time_domain,
time_of_day_domain=self.time_of_day_domain,
)
@classmethod
def from_proto(cls, feature_proto: FeatureProto):
"""
Args:
feature_proto: FeatureSpec protobuf object
Returns:
Feature object
"""
feature = cls(
name=feature_proto.name, dtype=ValueType(feature_proto.value_type),
)
feature.update_presence_constraints(feature_proto)
feature.update_shape_type(feature_proto)
feature.update_domain_info(feature_proto)
return feature