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GeezerVison is showing github.com — feast/sdk/python/feast/utils.py at master · iamcodingcat/feast Expand file tree/ Copy pathutils.pyMore file actions 1562 lines (1329 loc) · 59 KB / Copy pathutils.pyFile metadata and controls1562 lines (1329 loc) · 59 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 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deserialize_entity_key from feast.protos.feast.serving.ServingService_pb2 import ( FieldStatus, GetOnlineFeaturesResponse, ) from feast.protos.feast.types.EntityKey_pb2 import EntityKey as EntityKeyProto from feast.protos.feast.types.Value_pb2 import FloatList as FloatListProto from feast.protos.feast.types.Value_pb2 import RepeatedValue as RepeatedValueProto from feast.protos.feast.types.Value_pb2 import Value as ValueProto from feast.type_map import python_values_to_proto_values from feast.types import ComplexFeastType, PrimitiveFeastType from feast.value_type import ValueType from feast.version import get_version if typing.TYPE_CHECKING: from feast.base_feature_view import BaseFeatureView from feast.feature_service import FeatureService from feast.feature_view import FeatureView from feast.infra.registry.base_registry import BaseRegistry from feast.on_demand_feature_view import OnDemandFeatureView APPLICATION_NAME = "feast-dev/feast" USER_AGENT = "{}/{}".format(APPLICATION_NAME, get_version()) def get_user_agent(): return USER_AGENT def make_tzaware(t: datetime) -> datetime: """We assume tz-naive datetimes are UTC""" if t.tzinfo is None: return t.replace(tzinfo=timezone.utc) else: return t def make_df_tzaware(t: pd.DataFrame) -> pd.DataFrame: """Make all datetime type columns tzaware; leave everything else intact.""" df = t.copy() # don't modify incoming dataframe inplace for column in df.columns: if pd.api.types.is_datetime64_any_dtype(df[column]): df[column] = pd.to_datetime(df[column], utc=True) return df def to_naive_utc(ts: datetime) -> datetime: if ts.tzinfo is None: return ts else: return ts.astimezone(timezone.utc).replace(tzinfo=None) def maybe_local_tz(t: datetime) -> datetime: if t.tzinfo is None: return t.replace(tzinfo=tzlocal()) else: return t def get_default_yaml_file_path(repo_path: Path) -> Path: if FEAST_FS_YAML_FILE_PATH_ENV_NAME in os.environ: yaml_path = os.environ[FEAST_FS_YAML_FILE_PATH_ENV_NAME] return Path(yaml_path) else: return repo_path / "feature_store.yaml" def _get_requested_feature_views_to_features_dict( feature_refs: List[str], feature_views: List["FeatureView"], on_demand_feature_views: List["OnDemandFeatureView"], ) -> Tuple[Dict["FeatureView", List[str]], Dict["OnDemandFeatureView", List[str]]]: """Create a dict of FeatureView -> List[Feature] for all requested features. Set full_feature_names to True to have feature names prefixed by their feature view name. """ feature_views_to_feature_map: Dict["FeatureView", List[str]] = defaultdict(list) on_demand_feature_views_to_feature_map: Dict["OnDemandFeatureView", List[str]] = ( defaultdict(list) ) for ref in feature_refs: ref_parts = ref.split(":") feature_view_from_ref = ref_parts[0] feature_from_ref = ref_parts[1] found = False for fv in feature_views: if fv.projection.name_to_use() == feature_view_from_ref: found = True feature_views_to_feature_map[fv].append(feature_from_ref) for odfv in on_demand_feature_views: if odfv.projection.name_to_use() == feature_view_from_ref: found = True on_demand_feature_views_to_feature_map[odfv].append(feature_from_ref) if not found: raise ValueError(f"Could not find feature view from reference {ref}") return feature_views_to_feature_map, on_demand_feature_views_to_feature_map def _get_column_names( feature_view: "FeatureView", entities: List[Entity] ) -> Tuple[List[str], List[str], str, Optional[str]]: """ If a field mapping exists, run it in reverse on the join keys, feature names, event timestamp column, and created timestamp column to get the names of the relevant columns in the offline feature store table. Returns: Tuple containing the list of reverse-mapped join_keys, reverse-mapped feature names, reverse-mapped event timestamp column, and reverse-mapped created timestamp column that will be passed into the query to the offline store. """ # if we have mapped fields, use the original field names in the call to the offline store timestamp_field = feature_view.batch_source.timestamp_field # For feature views with aggregations, read INPUT columns from aggregations. # This applies to StreamFeatureView, BatchFeatureView, # or any FeatureView that has aggregations. if hasattr(feature_view, "aggregations") and feature_view.aggregations: # Extract unique input columns from aggregations, preserving order feature_names = list( dict.fromkeys(agg.column for agg in feature_view.aggregations) ) else: # For regular feature views, use the feature names feature_names = [feature.name for feature in feature_view.features] created_timestamp_column = feature_view.batch_source.created_timestamp_column from feast.feature_view import DUMMY_ENTITY_ID join_keys = [ entity.join_key for entity in entities if entity.join_key != DUMMY_ENTITY_ID ] if feature_view.batch_source.field_mapping is not None: reverse_field_mapping = { v: k for k, v in feature_view.batch_source.field_mapping.items() } timestamp_field = ( reverse_field_mapping[timestamp_field] if timestamp_field in reverse_field_mapping.keys() else timestamp_field ) created_timestamp_column = ( reverse_field_mapping[created_timestamp_column] if created_timestamp_column and created_timestamp_column in reverse_field_mapping.keys() else created_timestamp_column ) join_keys = [ reverse_field_mapping[col] if col in reverse_field_mapping.keys() else col for col in join_keys ] feature_names = [ reverse_field_mapping[col] if col in reverse_field_mapping.keys() else col for col in feature_names ] # We need to exclude join keys and timestamp columns from the list of features, after they are mapped to # their final column names via the `field_mapping` field of the source. feature_names = [ name for name in feature_names if name not in join_keys and name != timestamp_field and name != created_timestamp_column ] return ( join_keys, feature_names, timestamp_field, created_timestamp_column, ) def _run_pyarrow_field_mapping( table: pyarrow.Table, field_mapping: Dict[str, str], ) -> pyarrow.Table: # run field mapping in the forward direction cols = table.column_names mapped_cols = [ field_mapping[col] if col in field_mapping.keys() else col for col in cols ] table = table.rename_columns(mapped_cols) return table def _get_fields_with_aliases( fields: List[str], field_mappings: Dict[str, str], ) -> Tuple[List[str], List[str]]: """ Get a list of fields with aliases based on the field mappings. """ for field in fields: if "." in field and field not in field_mappings: raise ValueError( f"Feature {field} contains a '.' character, which is not allowed in field names. Use field mappings to rename fields." ) fields_with_aliases = [ f"{field} AS {field_mappings[field]}" if field in field_mappings else field for field in fields ] aliases = [ field_mappings[field] if field in field_mappings else field for field in fields ] return (fields_with_aliases, aliases) def _coerce_datetime(ts): """ Depending on underlying time resolution, arrow to_pydict() sometimes returns pd timestamp type (for nanosecond resolution), and sometimes you get standard python datetime (for microsecond resolution). While pd timestamp class is a subclass of python datetime, it doesn't always behave the same way. We convert it to normal datetime so that consumers downstream don't have to deal with these quirks. """ if isinstance(ts, pd.Timestamp): return ts.to_pydatetime() else: return ts def _columns_to_proto_values( table: pyarrow.RecordBatch, columns: List[Tuple[str, ValueType]], allow_missing: bool = False, ) -> Dict[str, List[ValueProto]]: """Convert table columns to proto values dict. Args: table: PyArrow RecordBatch containing the data. columns: List of (column_name, value_type) tuples to convert. allow_missing: If True, skip columns not found in table. If False, raise ValueError. Returns: Dict mapping column names to lists of ValueProto. """ result: Dict[str, List[ValueProto]] = {} for column, value_type in columns: if column in table.column_names: result[column] = python_values_to_proto_values( table.column(column).to_numpy(zero_copy_only=False), value_type ) elif not allow_missing: raise ValueError(f"Column {column} not found in table") return result def _build_entity_keys( num_rows: int, join_keys: Dict[str, ValueType], proto_values: Dict[str, List[ValueProto]], ) -> List[EntityKeyProto]: """Build entity key protos for each row. Args: num_rows: Number of rows to generate entity keys for. join_keys: Dict mapping join key names to their value types. proto_values: Dict mapping column names to lists of ValueProto values. Returns: List of EntityKeyProto, one per row. """ return [ EntityKeyProto( join_keys=list(join_keys.keys()), entity_values=[ proto_values[k][idx] for k in join_keys if k in proto_values ], ) for idx in range(num_rows) ] def _convert_arrow_to_proto( table: Union[pyarrow.Table, pyarrow.RecordBatch], feature_view: Union["FeatureView", "BaseFeatureView", "OnDemandFeatureView"], join_keys: Dict[str, ValueType], ) -> List[Tuple[EntityKeyProto, Dict[str, ValueProto], datetime, Optional[datetime]]]: # This is a workaround for isinstance(feature_view, OnDemandFeatureView), which triggers a circular import # Check for source_request_sources or source_feature_view_projections attributes to identify ODFVs if ( getattr(feature_view, "source_request_sources", None) is not None or getattr(feature_view, "source_feature_view_projections", None) is not None ): return _convert_arrow_odfv_to_proto(table, feature_view, join_keys) # type: ignore[arg-type] else: return _convert_arrow_fv_to_proto(table, feature_view, join_keys) # type: ignore[arg-type] def _convert_arrow_fv_to_proto( table: Union[pyarrow.Table, pyarrow.RecordBatch], feature_view: "FeatureView", join_keys: Dict[str, ValueType], ) -> List[Tuple[EntityKeyProto, Dict[str, ValueProto], datetime, Optional[datetime]]]: # Avoid ChunkedArrays which guarantees `zero_copy_only` available. if isinstance(table, pyarrow.Table): table = table.to_batches()[0] # TODO: This will break if the feature view has aggregations or transformations columns = [ (field.name, field.dtype.to_value_type()) for field in feature_view.features ] + list(join_keys.items()) proto_values_by_column = _columns_to_proto_values( table, columns, allow_missing=False ) entity_keys = _build_entity_keys(table.num_rows, join_keys, proto_values_by_column) # Serialize the features per row feature_dict = { feature.name: proto_values_by_column[feature.name] for feature in feature_view.features } features = [dict(zip(feature_dict, vars)) for vars in zip(*feature_dict.values())] # Convert event_timestamps event_timestamps = [ _coerce_datetime(val) for val in pd.to_datetime( table.column(feature_view.batch_source.timestamp_field).to_numpy( zero_copy_only=False ) ) ] # Convert created_timestamps if they exist if feature_view.batch_source.created_timestamp_column: created_timestamps = [ _coerce_datetime(val) for val in pd.to_datetime( table.column( feature_view.batch_source.created_timestamp_column ).to_numpy(zero_copy_only=False) ) ] else: created_timestamps = [None] * table.num_rows return list(zip(entity_keys, features, event_timestamps, created_timestamps)) def _convert_arrow_odfv_to_proto( table: Union[pyarrow.Table, pyarrow.RecordBatch], feature_view: "OnDemandFeatureView", join_keys: Dict[str, ValueType], ) -> List[Tuple[EntityKeyProto, Dict[str, ValueProto], datetime, Optional[datetime]]]: # Avoid ChunkedArrays which guarantees `zero_copy_only` available. if isinstance(table, pyarrow.Table): table = table.to_batches()[0] columns = [ (field.name, field.dtype.to_value_type()) for field in feature_view.features ] + list(join_keys.items()) # Convert columns that exist in the table proto_values_by_column = _columns_to_proto_values( table, columns, allow_missing=True ) # Ensure join keys are included, creating null values if missing from table for join_key, value_type in join_keys.items(): if join_key not in proto_values_by_column: if join_key in table.column_names: proto_values_by_column[join_key] = python_values_to_proto_values( table.column(join_key).to_numpy(zero_copy_only=False), value_type ) else: # Create null proto values directly (no need to build a PyArrow array) proto_values_by_column[join_key] = python_values_to_proto_values( [None] * table.num_rows, value_type ) # Cache column names set to avoid recreating list in loop column_names = {c[0] for c in columns} # Adding On Demand Features that are missing from proto_values for feature in feature_view.features: if feature.name in column_names and feature.name not in proto_values_by_column: # Create null proto values directly (more efficient than building PyArrow array) proto_values_by_column[feature.name] = python_values_to_proto_values( [None] * table.num_rows, feature.dtype.to_value_type() ) entity_keys = _build_entity_keys(table.num_rows, join_keys, proto_values_by_column) # Serialize the features per row feature_dict = { feature.name: proto_values_by_column[feature.name] for feature in feature_view.features if feature.name in proto_values_by_column } if feature_view.write_to_online_store: table_columns = {col.name for col in table.schema} for feature in feature_view.schema: if feature.name not in feature_dict and feature.name in table_columns: feature_dict[feature.name] = proto_values_by_column[feature.name] features = [dict(zip(feature_dict, vars)) for vars in zip(*feature_dict.values())] # We need to artificially add event_timestamps and created_timestamps now = _utc_now() event_timestamps = [ _coerce_datetime(pd.Timestamp(now)) for _ in range(table.num_rows) ] # setting them equivalent created_timestamps = event_timestamps return list(zip(entity_keys, features, event_timestamps, created_timestamps)) def _validate_entity_values(join_key_values: Dict[str, List[ValueProto]]): set_of_row_lengths = {len(v) for v in join_key_values.values()} if len(set_of_row_lengths) > 1: raise ValueError("All entity rows must have the same columns.") return set_of_row_lengths.pop() def _validate_feature_refs(feature_refs: List[str], full_feature_names: bool = False): """ Validates that there are no collisions among the feature references. Args: feature_refs: List of feature references to validate. Feature references must have format "feature_view:feature", e.g. "customer_fv:daily_transactions". full_feature_names: If True, the full feature references are compared for collisions; if False, only the feature names are compared. Raises: FeatureNameCollisionError: There is a collision among the feature references. """ collided_feature_refs = [] if full_feature_names: collided_feature_refs = [ ref for ref, occurrences in Counter(feature_refs).items() if occurrences > 1 ] else: feature_names = [ref.split(":")[1] for ref in feature_refs] collided_feature_names = [ ref for ref, occurrences in Counter(feature_names).items() if occurrences > 1 ] for feature_name in collided_feature_names: collided_feature_refs.extend( [ref for ref in feature_refs if ref.endswith(":" + feature_name)] ) if len(collided_feature_refs) > 0: raise FeatureNameCollisionError(collided_feature_refs, full_feature_names) def _group_feature_refs( features: List[str], all_feature_views: List["FeatureView"], all_on_demand_feature_views: List["OnDemandFeatureView"], ) -> Tuple[ List[Tuple[Union["FeatureView", "OnDemandFeatureView"], List[str]]], List[Tuple["OnDemandFeatureView", List[str]]], ]: """Get list of feature views and corresponding feature names based on feature references""" # view name to view proto view_index: Dict[str, Union["FeatureView", "OnDemandFeatureView"]] = { view.projection.name_to_use(): view for view in all_feature_views } # on demand view to on demand view proto on_demand_view_index: Dict[str, "OnDemandFeatureView"] = {} for view in all_on_demand_feature_views: if view.projection and not view.write_to_online_store: on_demand_view_index[view.projection.name_to_use()] = view elif view.projection and view.write_to_online_store: # we insert the ODFV view to FVs for ones that are written to the online store view_index[view.projection.name_to_use()] = view # view name to feature names views_features = defaultdict(set) # on demand view name to feature names on_demand_view_features = defaultdict(set) for ref in features: view_name, feat_name = ref.split(":") if view_name in view_index: if hasattr(view_index[view_name], "write_to_online_store"): tmp_feat_name = [ f for f in view_index[view_name].schema if f.name == feat_name ] if len(tmp_feat_name) > 0: feat_name = tmp_feat_name[0].name else: view_index[view_name].projection.get_feature( feat_name ) # For validation views_features[view_name].add(feat_name) elif view_name in on_demand_view_index: on_demand_view_index[view_name].projection.get_feature( feat_name ) # For validation on_demand_view_features[view_name].add(feat_name) # Let's also add in any FV Feature dependencies here. for input_fv_projection in on_demand_view_index[ view_name ].source_feature_view_projections.values(): for input_feat in input_fv_projection.features: views_features[input_fv_projection.name].add(input_feat.name) else: raise FeatureViewNotFoundException(view_name) fvs_result: List[Tuple[Union["FeatureView", "OnDemandFeatureView"], List[str]]] = [] odfvs_result: List[Tuple["OnDemandFeatureView", List[str]]] = [] for view_name, feature_names in views_features.items(): fvs_result.append((view_index[view_name], list(feature_names))) for view_name, feature_names in on_demand_view_features.items(): odfvs_result.append((on_demand_view_index[view_name], list(feature_names))) return fvs_result, odfvs_result def construct_response_feature_vector( values_vector: Iterable[Any], statuses_vector: Iterable[Any], timestamp_vector: Iterable[Any], mapping_indexes: Iterable[List[int]], output_len: int, ) -> GetOnlineFeaturesResponse.FeatureVector: values_output: Iterable[Any] = [None] * output_len statuses_output: Iterable[Any] = [None] * output_len timestamp_output: Iterable[Any] = [None] * output_len for i, destinations in enumerate(mapping_indexes): for idx in destinations: values_output[idx] = values_vector[i] # type: ignore[index] statuses_output[idx] = statuses_vector[i] # type: ignore[index] timestamp_output[idx] = timestamp_vector[i] # type: ignore[index] return GetOnlineFeaturesResponse.FeatureVector( values=values_output, statuses=statuses_output, event_timestamps=timestamp_output, ) def _apply_aggregations_to_response( response_data: Union[pyarrow.Table, Dict[str, List[Any]]], aggregations, group_keys: Optional[List[str]], mode: str, ) -> Union[pyarrow.Table, Dict[str, List[Any]]]: """ Apply aggregations using PandasBackend. Args: response_data: Either a pyarrow.Table or dict of lists containing the data aggregations: List of Aggregation objects to apply group_keys: List of column names to group by (optional) mode: Transformation mode ("python", "pandas", or "substrait") Returns: Aggregated data in the same format as input TODO: Consider refactoring to support backends other than pandas in the future. """ if not aggregations: return response_data backend = PandasBackend() # Convert to pandas DataFrame if isinstance(response_data, dict): df = pd.DataFrame(response_data) else: # pyarrow.Table df = backend.from_arrow(response_data) if df.empty: return response_data # Convert aggregations to agg_ops format agg_ops = aggregation_specs_to_agg_ops( aggregations, time_window_unsupported_error_message=( "Time window aggregation is not supported in online serving." ), ) # Apply aggregations using PandasBackend if group_keys: result_df = backend.groupby_agg(df, group_keys, agg_ops) else: # No grouping - aggregate over entire dataset result_df = backend.groupby_agg(df, [], agg_ops) # Convert back to original format if mode == "python": return {col: result_df[col].tolist() for col in result_df.columns} else: # pandas or substrait return backend.to_arrow(result_df) def _augment_response_with_on_demand_transforms( online_features_response: GetOnlineFeaturesResponse, feature_refs: List[str], requested_on_demand_feature_views: List["OnDemandFeatureView"], full_feature_names: bool, ): """Computes on demand feature values and adds them to the result rows. Assumes that 'online_features_response' already contains the necessary request data and input feature views for the on demand feature views. Unneeded feature values such as request data and unrequested input feature views will be removed from 'online_features_response'. Args: online_features_response: Protobuf object to populate feature_refs: List of all feature references to be returned. requested_on_demand_feature_views: List of all odfvs that have been requested. full_feature_names: A boolean that provides the option to add the feature view prefixes to the feature names, changing them from the format "feature" to "feature_view__feature" (e.g., "daily_transactions" changes to "customer_fv__daily_transactions"). """ from feast.online_response import OnlineResponse requested_odfv_map = {odfv.name: odfv for odfv in requested_on_demand_feature_views} requested_odfv_feature_names = requested_odfv_map.keys() odfv_feature_refs = defaultdict(list) for feature_ref in feature_refs: view_name, feature_name = feature_ref.split(":") if view_name in requested_odfv_feature_names: odfv_feature_refs[view_name].append( f"{requested_odfv_map[view_name].projection.name_to_use()}__{feature_name}" if full_feature_names else feature_name ) initial_response = OnlineResponse(online_features_response) initial_response_arrow: Optional[pyarrow.Table] = None initial_response_dict: Optional[Dict[str, List[Any]]] = None # Apply on demand transformations and augment the result rows odfv_result_names = set() for odfv_name, _feature_refs in odfv_feature_refs.items(): odfv = requested_odfv_map[odfv_name] if not odfv.write_to_online_store: # Apply aggregations if configured. if odfv.aggregations: if odfv.mode == "python": if initial_response_dict is None: initial_response_dict = initial_response.to_dict() initial_response_dict = _apply_aggregations_to_response( initial_response_dict, odfv.aggregations, odfv.entities, odfv.mode, ) elif odfv.mode in {"pandas", "substrait"}: if initial_response_arrow is None: initial_response_arrow = initial_response.to_arrow() initial_response_arrow = _apply_aggregations_to_response( initial_response_arrow, odfv.aggregations, odfv.entities, odfv.mode, ) # Apply transformation. Note: aggregations and transformation configs are mutually exclusive # TODO: Fix to make it work for having both aggregation and transformation # ticket: https://github.com/feast-dev/feast/issues/5689 elif odfv.mode == "python": if initial_response_dict is None: initial_response_dict = initial_response.to_dict() transformed_features_dict: Dict[str, List[Any]] = odfv.transform_dict( initial_response_dict ) elif odfv.mode in {"pandas", "substrait"}: if initial_response_arrow is None: initial_response_arrow = initial_response.to_arrow() transformed_features_arrow = odfv.transform_arrow( initial_response_arrow, full_feature_names ) else: raise Exception( f"Invalid OnDemandFeatureMode: {odfv.mode}. Expected one of 'pandas', 'python', or 'substrait'." ) transformed_features = ( transformed_features_dict if odfv.mode == "python" else transformed_features_arrow ) transformed_columns = ( transformed_features.column_names if isinstance(transformed_features, pyarrow.Table) else transformed_features ) selected_subset = [f for f in transformed_columns if f in _feature_refs] proto_values = [] schema_dict = {k.name: k.dtype for k in odfv.schema} for selected_feature in selected_subset: feature_vector = transformed_features[selected_feature] selected_feature_type = schema_dict.get(selected_feature, None) feature_type: ValueType = ValueType.UNKNOWN if selected_feature_type is not None: if isinstance( selected_feature_type, (ComplexFeastType, PrimitiveFeastType) ): feature_type = selected_feature_type.to_value_type() elif not isinstance(selected_feature_type, ValueType): raise TypeError( f"Unexpected type for feature_type: {type(feature_type)}" ) proto_values.append( python_values_to_proto_values( feature_vector if isinstance(feature_vector, list) else [feature_vector] if odfv.mode == "python" else feature_vector.to_numpy(), feature_type, ) ) odfv_result_names |= set(selected_subset) online_features_response.metadata.feature_names.val.extend(selected_subset) for feature_idx in range(len(selected_subset)): online_features_response.results.append( GetOnlineFeaturesResponse.FeatureVector( values=proto_values[feature_idx], statuses=[FieldStatus.PRESENT] * len(proto_values[feature_idx]), event_timestamps=[Timestamp()] * len(proto_values[feature_idx]), ) ) def _get_entity_maps( registry, project, feature_views, ) -> Tuple[Dict[str, str], Dict[str, ValueType], Set[str]]: # TODO(felixwang9817): Support entities that have different types for different feature views. entities = registry.list_entities(project, allow_cache=True) entity_by_name: Dict[str, "Entity"] = {entity.name: entity for entity in entities} entity_name_to_join_key_map: Dict[str, str] = {} entity_type_map: Dict[str, ValueType] = {} for entity in entities: entity_name_to_join_key_map[entity.name] = entity.join_key for feature_view in feature_views: for entity_name in feature_view.entities: entity = entity_by_name.get(entity_name) if entity is None: from feast.errors import EntityNotFoundException raise EntityNotFoundException(entity_name, project=project) # User directly uses join_key as the entity reference in the entity_rows for the # entity mapping case. entity_name = feature_view.projection.join_key_map.get( entity.join_key, entity.name ) join_key = feature_view.projection.join_key_map.get( entity.join_key, entity.join_key ) entity_name_to_join_key_map[entity_name] = join_key for entity_column in feature_view.entity_columns: dtype = entity_column.dtype.to_value_type() entity_join_key_column_name = feature_view.projection.join_key_map.get( entity_column.name, entity_column.name ) entity_type_map[entity_join_key_column_name] = dtype return ( entity_name_to_join_key_map, entity_type_map, set(entity_name_to_join_key_map.values()), ) def _get_table_entity_values( table: "FeatureView", entity_name_to_join_key_map: Dict[str, str], join_key_proto_values: Dict[str, List[ValueProto]], ) -> Dict[str, List[ValueProto]]: # The correct join_keys expected by the OnlineStore for this Feature View. table_join_keys = [ entity_name_to_join_key_map[entity_name] for entity_name in table.entities ] # If the FeatureView has a Projection then the join keys may be aliased. alias_to_join_key_map = {v: k for k, v in table.projection.join_key_map.items()} # Subset to columns which are relevant to this FeatureView and # give them the correct names. entity_values = { alias_to_join_key_map.get(k, k): v for k, v in join_key_proto_values.items() if alias_to_join_key_map.get(k, k) in table_join_keys } return entity_values def _get_unique_entities( table: "FeatureView", join_key_values: Dict[str, List[ValueProto]], entity_name_to_join_key_map: Dict[str, str], ) -> Tuple[Tuple[Dict[str, ValueProto], ...], Tuple[List[int], ...], int]: """Return the set of unique composite Entities for a Feature View and the indexes at which they appear. This method allows us to query the OnlineStore for data we need only once rather than requesting and processing data for the same combination of Entities multiple times. """ # Get the correct set of entity values with the correct join keys. table_entity_values = _get_table_entity_values( table, entity_name_to_join_key_map, join_key_values, ) # Validate that all expected join keys exist and have non-empty values. expected_keys = set(entity_name_to_join_key_map.values()) expected_keys.discard("__dummy_id") missing_keys = sorted( list(set([key for key in expected_keys if key not in table_entity_values])) ) empty_keys = sorted( list(set([key for key in expected_keys if not table_entity_values.get(key)])) ) if missing_keys or empty_keys: if not any(table_entity_values.values()): raise KeyError( f"Missing join key values for keys: {missing_keys}. " f"No values provided for keys: {empty_keys}. " f"Provided join_key_values: {list(join_key_values.keys())}" ) # Convert the column-oriented table_entity_values into row-wise data. keys = list(table_entity_values.keys()) # Each row is a tuple of ValueProto objects corresponding to the join keys. rowise = list(enumerate(zip(*table_entity_values.values()))) # If there are no rows, return empty tuples. if not rowise: return (), (), 0 # Sort rowise so that rows with the same join key values are adjacent. rowise.sort(key=lambda row: tuple(getattr(x, x.WhichOneof("val")) for x in row[1])) # Group rows by their composite join key value. groups = [ (dict(zip(keys, key_tuple)), [idx for idx, _ in group]) for key_tuple, group in itertools.groupby(rowise, key=lambda row: row[1]) ] # If no groups were formed (should not happen for valid input), return empty tuples. if not groups: return (), (), 0 # Unpack the unique entities and their original row indexes. unique_entities, indexes = tuple(zip(*groups)) return unique_entities, indexes, len(rowise) def _get_unique_entities_from_values( table_entity_values: Dict[str, List[ValueProto]], ) -> Tuple[Tuple[Dict[str, ValueProto], ...], Tuple[List[int], ...], int]: """Return the set of unique composite Entities for a Feature View and the indexes at which they appear. This method allows us to query the OnlineStore for data we need only once rather than requesting and processing data for the same combination of Entities multiple times. """ keys = table_entity_values.keys() # Sort the rowise data to allow for grouping but keep original index. This lambda is # sufficient as Entity types cannot be complex (ie. lists). rowise = list(enumerate(zip(*table_entity_values.values()))) rowise.sort(key=lambda row: tuple(getattr(x, x.WhichOneof("val")) for x in row[1])) # Identify unique entities and the indexes at which they occur. unique_entities: Tuple[Dict[str, ValueProto], ...] indexes: Tuple[List[int], ...] unique_entities, indexes = tuple( zip( *[ (dict(zip(keys, k)), [_[0] for _ in g]) for k, g in itertools.groupby(rowise, key=lambda x: x[1]) ] ) ) return unique_entities, indexes, len(rowise) def _drop_unneeded_columns( online_features_response: GetOnlineFeaturesResponse, requested_result_row_names: Set[str], ): """ Unneeded feature values such as request data and unrequested input feature views will be removed from 'online_features_response'. Args: online_features_response: Protobuf object to populate requested_result_row_names: Fields from 'result_rows' that have been requested, and therefore should not be dropped. """ # Drop values that aren't needed unneeded_feature_indices = [ idx for idx, val in enumerate(online_features_response.metadata.feature_names.val) if val not in requested_result_row_names ] for idx in reversed(unneeded_feature_indices): del online_features_response.metadata.feature_names.val[idx] del online_features_response.results[idx] def _populate_result_rows_from_columnar( online_features_response: GetOnlineFeaturesResponse, data: Dict[str, List[ValueProto]], ): timestamp = Timestamp() # Only initialize this timestamp once. # Add more values to the existing result rows for feature_name, feature_values in data.items(): online_features_response.metadata.feature_names.val.append(feature_name) online_features_response.results.append( GetOnlineFeaturesResponse.FeatureVector( values=feature_values, statuses=[FieldStatus.PRESENT] * len(feature_values), event_timestamps=[timestamp] * len(feature_values), ) ) def get_needed_request_data( grouped_odfv_refs: List[Tuple["OnDemandFeatureView", List[str]]], ) -> Set[str]: needed_request_data: Set[str] = set() for odfv, _ in grouped_odfv_refs: odfv_request_data_schema = odfv.get_request_data_schema() # if odfv.write_to_online_store, we should not pass in the request data needed_request_data.update(odfv_request_data_schema.keys()) return needed_request_data def ensure_request_data_values_exist( needed_request_data: Set[str], |
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