fix: Schema update

docs/getting-started/concepts/feature-view.md

@@ -144,10 +144,10 @@ from feast import Field, Float64, RequestSource
 # available at request time (e.g. part of the user initiated HTTP request)
 input_request = RequestSource(
     name="vals_to_add",
-    schema={
-        "val_to_add": ValueType.INT64,
-        "val_to_add_2": ValueType.INT64
-    }
+    schema=[
+        Field(name="val_to_add", dtype=PrimitiveFeastType.INT64),
+        Field(name="val_to_add_2": dtype=PrimitiveFeastType.INT64),
+    ]
 )
 
 # Use the input data and feature view features to create new features

docs/how-to-guides/adding-a-new-offline-store.md

@@ -246,7 +246,7 @@ Finally, the custom data source class can be use in the feature repo to define a
 ```python
 pdriver_hourly_stats = CustomFileDataSource(
     path="feature_repo/data/driver_stats.parquet",
-    event_timestamp_column="event_timestamp",
+    timestamp_field="event_timestamp",
     created_timestamp_column="created",
 )
 

examples/java-demo/feature_repo/driver_repo.py

@@ -5,6 +5,7 @@
 from feast.request_feature_view import RequestFeatureView
 from feast.types import Float32, Float64, Int64, String
 from google.protobuf.duration_pb2 import Duration
+from feast.field import Field
 
 from feast import Entity, Feature, FeatureView, FileSource, ValueType
 
@@ -33,7 +34,10 @@
 # available at request time (e.g. part of the user initiated HTTP request)
 input_request = RequestSource(
     name="vals_to_add",
-    schema={"val_to_add": ValueType.INT64, "val_to_add_2": ValueType.INT64},
+    schema=[
+        Field(name="val_to_add", dtype=Int64),
+        Field(name="val_to_add_2", dtype=Int64),
+    ],
 )
 
 # Define an on demand feature view which can generate new features based on
@@ -59,6 +63,9 @@ def transformed_conv_rate(inputs: pd.DataFrame) -> pd.DataFrame:
 driver_age_request_fv = RequestFeatureView(
     name="driver_age",
     request_data_source=RequestSource(
-        name="driver_age", schema={"driver_age": ValueType.INT64,}
+        name="driver_age",
+        schema=[
+            Field(name="driver_age", dtype=Int64),
+        ],
     ),
 )

go/internal/feast/model/ondemandfeatureview.go

@@ -55,8 +55,8 @@ func (fs *OnDemandFeatureView) ProjectWithFeatures(featureNames []string) (*OnDe
 func (fs *OnDemandFeatureView) GetRequestDataSchema() map[string]types.ValueType_Enum {
 	schema := make(map[string]types.ValueType_Enum)
 	for _, requestDataSource := range fs.SourceRequestDataSources {
-		for fieldName, fieldValueType := range requestDataSource.Schema {
-			schema[fieldName] = fieldValueType
+		for _, featureSpec := range requestDataSource.Schema {
+			schema[featureSpec.Name] = featureSpec.ValueType
 		}
 	}
 	return schema

java/serving/src/test/resources/docker-compose/feast10/definitions.py

@@ -8,7 +8,6 @@
 from feast.types import Float32, Float64, Int64
 from feast.value_type import ValueType
 from google.protobuf.duration_pb2 import Duration
-
 from feast import FileSource
 
 file_path = "driver_stats.parquet"

protos/feast/core/DataSource.proto

@@ -24,6 +24,7 @@ option java_package = "feast.proto.core";
 
 import "feast/core/DataFormat.proto";
 import "feast/types/Value.proto";
+import "feast/core/Feature.proto";
 
 // Defines a Data Source that can be used source Feature data
 // Next available id: 28
@@ -212,7 +213,10 @@ message DataSource {
   message RequestDataOptions {
     reserved 1;
     // Mapping of feature name to type
-    map<string, feast.types.ValueType.Enum> schema = 2;
+    map<string, feast.types.ValueType.Enum> deprecated_schema = 2;
+
+    repeated FeatureSpecV2 schema = 3;
+
   }
 
   // Defines options for DataSource that supports pushing data to it. This allows data to be pushed to

protos/feast/types/Field.proto

@@ -26,5 +26,5 @@ option go_package = "github.com/feast-dev/feast/go/protos/feast/types";
 
 message Field {
   string name = 1;
-  feast.types.Value value = 2;
+  feast.types.ValueType.Enum value = 2;
 }

sdk/python/feast/data_source.py

@@ -15,14 +15,16 @@
 import enum
 import warnings
 from abc import ABC, abstractmethod
-from typing import Any, Callable, Dict, Iterable, Optional, Tuple
+from typing import Any, Callable, Dict, Iterable, List, Optional, Tuple, Union
 
 from google.protobuf.json_format import MessageToJson
 
 from feast import type_map
 from feast.data_format import StreamFormat
+from feast.field import Field
 from feast.protos.feast.core.DataSource_pb2 import DataSource as DataSourceProto
 from feast.repo_config import RepoConfig, get_data_source_class_from_type
+from feast.types import VALUE_TYPES_TO_FEAST_TYPES
 from feast.value_type import ValueType
 
 
@@ -449,27 +451,45 @@ class RequestSource(DataSource):
 
     Args:
         name: Name of the request data source
-        schema: Schema mapping from the input feature name to a ValueType
+        schema Union[Dict[str, ValueType], List[Field]]: Schema mapping from the input feature name to a ValueType
         description (optional): A human-readable description.
         tags (optional): A dictionary of key-value pairs to store arbitrary metadata.
         owner (optional): The owner of the request data source, typically the email of the primary
             maintainer.
     """
 
     name: str
-    schema: Dict[str, ValueType]
+    schema: List[Field]
 
     def __init__(
         self,
         name: str,
-        schema: Dict[str, ValueType],
+        schema: Union[Dict[str, ValueType], List[Field]],
         description: Optional[str] = "",
         tags: Optional[Dict[str, str]] = None,
         owner: Optional[str] = "",
     ):
         """Creates a RequestSource object."""
         super().__init__(name=name, description=description, tags=tags, owner=owner)
-        self.schema = schema
+        if isinstance(schema, Dict):
+            warnings.warn(
+                "Schema in RequestSource is changing type. The schema data type Dict[str, ValueType] is being deprecated in Feast 0.23. "
+                "Please use List[Field] instead for the schema",
+                DeprecationWarning,
+            )
+            schemaList = []
+            for key, valueType in schema.items():
+                schemaList.append(
+                    Field(name=key, dtype=VALUE_TYPES_TO_FEAST_TYPES[valueType])
+                )
+            self.schema = schemaList
+        elif isinstance(schema, List):
+            self.schema = schema
+        else:
+            raise Exception(
+                "Schema type must be either dictionary or list, not "
+                + str(type(schema))
+            )
 
     def validate(self, config: RepoConfig):
         pass
@@ -479,33 +499,86 @@ def get_table_column_names_and_types(
     ) -> Iterable[Tuple[str, str]]:
         pass
 
+    def __eq__(self, other):
+        if not isinstance(other, RequestSource):
+            raise TypeError(
+                "Comparisons should only involve RequestSource class objects."
+            )
+        if (
+            self.name != other.name
+            or self.description != other.description
+            or self.owner != other.owner
+            or self.tags != other.tags
+        ):
+            return False
+        if isinstance(self.schema, List) and isinstance(other.schema, List):
+            for field1, field2 in zip(self.schema, other.schema):
+                if field1 != field2:
+                    return False
+            return True
+        else:
+            return False
+
+    def __hash__(self):
+        return super().__hash__()
+
     @staticmethod
     def from_proto(data_source: DataSourceProto):
+
+        deprecated_schema = data_source.request_data_options.deprecated_schema
         schema_pb = data_source.request_data_options.schema
-        schema = {}
-        for key, val in schema_pb.items():
-            schema[key] = ValueType(val)
-        return RequestSource(
-            name=data_source.name,
-            schema=schema,
-            description=data_source.description,
-            tags=dict(data_source.tags),
-            owner=data_source.owner,
-        )
+
+        if deprecated_schema and not schema_pb:
+            warnings.warn(
+                "Schema in RequestSource is changing type. The schema data type Dict[str, ValueType] is being deprecated in Feast 0.23. "
+                "Please use List[Field] instead for the schema",
+                DeprecationWarning,
+            )
+            dict_schema = {}
+            for key, val in deprecated_schema.items():
+                dict_schema[key] = ValueType(val)
+            return RequestSource(
+                name=data_source.name,
+                schema=dict_schema,
+                description=data_source.description,
+                tags=dict(data_source.tags),
+                owner=data_source.owner,
+            )
+        else:
+            list_schema = []
+            for field_proto in schema_pb:
+                list_schema.append(Field.from_proto(field_proto))
+
+            return RequestSource(
+                name=data_source.name,
+                schema=list_schema,
+                description=data_source.description,
+                tags=dict(data_source.tags),
+                owner=data_source.owner,
+            )
 
     def to_proto(self) -> DataSourceProto:
-        schema_pb = {}
-        for key, value in self.schema.items():
-            schema_pb[key] = value.value
-        options = DataSourceProto.RequestDataOptions(schema=schema_pb)
+
+        schema_pb = []
+
+        if isinstance(self.schema, Dict):
+            for key, value in self.schema.items():
+                schema_pb.append(
+                    Field(
+                        name=key, dtype=VALUE_TYPES_TO_FEAST_TYPES[value.value]
+                    ).to_proto()
+                )
+        else:
+            for field in self.schema:
+                schema_pb.append(field.to_proto())
         data_source_proto = DataSourceProto(
             name=self.name,
             type=DataSourceProto.REQUEST_SOURCE,
-            request_data_options=options,
             description=self.description,
             tags=self.tags,
             owner=self.owner,
         )
+        data_source_proto.request_data_options.schema.extend(schema_pb)
 
         return data_source_proto
 

sdk/python/feast/field.py

@@ -74,7 +74,7 @@ def from_proto(cls, field_proto: FieldProto):
             field_proto: FieldProto protobuf object
         """
         value_type = ValueType(field_proto.value_type)
-        return cls(name=field_proto.name, dtype=from_value_type(value_type))
+        return cls(name=field_proto.name, dtype=from_value_type(value_type=value_type))
 
     @classmethod
     def from_feature(cls, feature: Feature):

sdk/python/feast/on_demand_feature_view.py

@@ -352,7 +352,17 @@ def from_proto(cls, on_demand_feature_view_proto: OnDemandFeatureViewProto):
     def get_request_data_schema(self) -> Dict[str, ValueType]:
         schema: Dict[str, ValueType] = {}
         for request_source in self.source_request_sources.values():
-            schema.update(request_source.schema)
+            if isinstance(request_source.schema, List):
+                new_schema = {}
+                for field in request_source.schema:
+                    new_schema[field.name] = field.dtype.to_value_type()
+                schema.update(new_schema)
+            elif isinstance(request_source.schema, Dict):
+                schema.update(request_source.schema)
+            else:
+                raise Exception(
+                    f"Request source schema is not correct type: ${str(type(request_source.schema))}"
+                )
         return schema
 
     def get_transformed_features_df(
@@ -409,9 +419,9 @@ def infer_features(self):
                 )
                 df[f"{feature.name}"] = pd.Series(dtype=dtype)
         for request_data in self.source_request_sources.values():
-            for feature_name, feature_type in request_data.schema.items():
-                dtype = feast_value_type_to_pandas_type(feature_type)
-                df[f"{feature_name}"] = pd.Series(dtype=dtype)
+            for field in request_data.schema:
+                dtype = feast_value_type_to_pandas_type(field.dtype.to_value_type())
+                df[f"{field.name}"] = pd.Series(dtype=dtype)
         output_df: pd.DataFrame = self.udf.__call__(df)
         inferred_features = []
         for f, dt in zip(output_df.columns, output_df.dtypes):

sdk/python/feast/request_feature_view.py

@@ -5,7 +5,7 @@
 from feast.base_feature_view import BaseFeatureView
 from feast.data_source import RequestSource
 from feast.feature_view_projection import FeatureViewProjection
-from feast.field import Field, from_value_type
+from feast.field import Field
 from feast.protos.feast.core.RequestFeatureView_pb2 import (
     RequestFeatureView as RequestFeatureViewProto,
 )
@@ -63,12 +63,17 @@ def __init__(
             DeprecationWarning,
         )
 
+        if isinstance(request_data_source.schema, Dict):
+            new_features = [
+                Field(name=name, dtype=dtype)
+                for name, dtype in request_data_source.schema.items()
+            ]
+        else:
+            new_features = request_data_source.schema
+
         super().__init__(
             name=name,
-            features=[
-                Field(name=name, dtype=from_value_type(value_type))
-                for name, value_type in request_data_source.schema.items()
-            ],
+            features=new_features,
             description=description,
             tags=tags,
             owner=owner,

sdk/python/feast/types.py

@@ -80,6 +80,15 @@ def to_value_type(self) -> ValueType:
     def __str__(self):
         return PRIMITIVE_FEAST_TYPES_TO_STRING[self.name]
 
+    def __eq__(self, other):
+        if isinstance(other, PrimitiveFeastType):
+            return self.value == other.value
+        else:
+            return False
+
+    def __hash__(self):
+        return hash((PRIMITIVE_FEAST_TYPES_TO_STRING[self.name]))
+
 
 Invalid = PrimitiveFeastType.INVALID
 Bytes = PrimitiveFeastType.BYTES

sdk/python/tests/integration/feature_repos/universal/feature_views.py

@@ -123,7 +123,9 @@ def similarity_feature_view(
 
 
 def create_conv_rate_request_source():
-    return RequestSource(name="conv_rate_input", schema={"val_to_add": ValueType.INT32})
+    return RequestSource(
+        name="conv_rate_input", schema=[Field(name="val_to_add", dtype=Int32)],
+    )
 
 
 def create_similarity_request_source():