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GeezerVison is showing github.com — feast/sdk/python/feast/proto_json.py at master · luodinglin/feast Expand file tree/ Copy pathproto_json.pyMore file actions 237 lines (197 loc) · 8.04 KB / Copy pathproto_json.pyFile metadata and controls237 lines (197 loc) · 8.04 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 import uuid from importlib.metadata import version as importlib_version from typing import Any, Callable, Type from google.protobuf.json_format import ( # type: ignore _WKTJSONMETHODS, ParseError, _Parser, _Printer, ) from packaging import version from feast.protos.feast.serving.ServingService_pb2 import FeatureList from feast.protos.feast.types.Value_pb2 import RepeatedValue, Value ProtoMessage = Any JsonObject = Any def _patch_proto_json_encoding( proto_type: Type[ProtoMessage], to_json_object: Callable[[_Printer, ProtoMessage], JsonObject], from_json_object: Callable[[_Parser, JsonObject, ProtoMessage], None], ) -> None: """Patch Protobuf JSON Encoder / Decoder for a desired Protobuf type with to_json & from_json methods.""" to_json_fn_name = "_" + uuid.uuid4().hex from_json_fn_name = "_" + uuid.uuid4().hex setattr(_Printer, to_json_fn_name, to_json_object) setattr(_Parser, from_json_fn_name, from_json_object) _WKTJSONMETHODS[proto_type.DESCRIPTOR.full_name] = [ to_json_fn_name, from_json_fn_name, ] def _patch_feast_value_json_encoding(): """Patch Protobuf JSON Encoder / Decoder with a Feast Value type. This allows encoding the proto object as a native type, without the dummy structural wrapper. Here's a before example: { "value_1": { "int64_val": 1 }, "value_2": { "double_list_val": [1.0, 2.0, 3.0] }, } And here's an after example: { "value_1": 1, "value_2": [1.0, 2.0, 3.0] } """ def to_json_object(printer: _Printer, message: ProtoMessage) -> JsonObject: which = message.WhichOneof("val") # If the Value message is not set treat as null_value when serialize # to JSON. The parse back result will be different from original message. if which is None or which == "null_val": return None elif "_list_" in which: value = list(getattr(message, which).val) else: value = getattr(message, which) return value def from_json_object( parser: _Parser, value: JsonObject, message: ProtoMessage ) -> None: if value is None: message.null_val = 0 elif isinstance(value, bool): message.bool_val = value elif isinstance(value, str): message.string_val = value elif isinstance(value, int): message.int64_val = value elif isinstance(value, float): message.double_val = value elif isinstance(value, list): if len(value) == 0: # Clear will mark the struct as modified so it will be created even if there are no values message.int64_list_val.Clear() elif isinstance(value[0], bool): message.bool_list_val.val.extend(value) elif isinstance(value[0], str): message.string_list_val.val.extend(value) elif isinstance(value[0], (float, int, type(None))): # Identify array as ints if all of the elements are ints if all(isinstance(item, int) for item in value): message.int64_list_val.val.extend(value) # If any of the elements are floats or nulls, then parse it as a float array else: # Convert each null as NaN. message.double_list_val.val.extend( [item if item is not None else float("nan") for item in value] ) else: raise ParseError( "Value {0} has unexpected type {1}.".format( value[0], type(value[0]) ) ) else: raise ParseError( "Value {0} has unexpected type {1}.".format(value, type(value)) ) def from_json_object_updated( parser: _Parser, value: JsonObject, message: ProtoMessage, path: str ): from_json_object(parser, value, message) # https://github.com/feast-dev/feast/issues/2484 Certain feast users need a higher version of protobuf but the # parameters of `from_json_object` changes in feast 3.20.1. This change gives users flexibility to use earlier versions. current_version = importlib_version("protobuf") if version.parse(current_version) < version.parse("3.20"): _patch_proto_json_encoding(Value, to_json_object, from_json_object) else: _patch_proto_json_encoding(Value, to_json_object, from_json_object_updated) def _patch_feast_repeated_value_json_encoding(): """Patch Protobuf JSON Encoder / Decoder with a Feast RepeatedValue type. This allows list of lists without dummy field name "val". Here's a before example: { "repeated_value": [ {"val": [1,2,3]}, {"val": [4,5,6]} ] } And here's an after example: { "repeated_value": [ [1,2,3], [4,5,6] ] } """ def to_json_object(printer: _Printer, message: ProtoMessage) -> JsonObject: return [printer._MessageToJsonObject(item) for item in message.val] def from_json_object_updated( parser: _Parser, value: JsonObject, message: ProtoMessage, path: str ) -> None: array = value if isinstance(value, list) else value["val"] for item in array: parser.ConvertMessage(item, message.val.add(), path) def from_json_object( parser: _Parser, value: JsonObject, message: ProtoMessage ) -> None: array = value if isinstance(value, list) else value["val"] for item in array: parser.ConvertMessage(item, message.val.add()) # https://github.com/feast-dev/feast/issues/2484 Certain feast users need a higher version of protobuf but the # parameters of `from_json_object` changes in feast 3.20.1. This change gives users flexibility to use earlier versions. current_version = importlib_version("protobuf") if version.parse(current_version) < version.parse("3.20"): _patch_proto_json_encoding(RepeatedValue, to_json_object, from_json_object) else: _patch_proto_json_encoding( RepeatedValue, to_json_object, from_json_object_updated ) def _patch_feast_feature_list_json_encoding(): """Patch Protobuf JSON Encoder / Decoder with a Feast FeatureList type. This allows list of lists without dummy field name "features". Here's a before example: { "feature_list": { "features": [ "feature-1", "feature-2", "feature-3" ] } } And here's an after example: { "feature_list": [ "feature-1", "feature-2", "feature-3" ] } """ def to_json_object(printer: _Printer, message: ProtoMessage) -> JsonObject: return list(message.val) def from_json_object( parser: _Parser, value: JsonObject, message: ProtoMessage ) -> None: array = value if isinstance(value, list) else value["val"] message.val.extend(array) def from_json_object_updated( parser: _Parser, value: JsonObject, message: ProtoMessage, path: str ) -> None: from_json_object(parser, value, message) # https://github.com/feast-dev/feast/issues/2484 Certain feast users need a higher version of protobuf but the # parameters of `from_json_object` changes in feast 3.20.1. This change gives users flexibility to use earlier versions. current_version = importlib_version("protobuf") if version.parse(current_version) < version.parse("3.20"): _patch_proto_json_encoding(FeatureList, to_json_object, from_json_object) else: _patch_proto_json_encoding( FeatureList, to_json_object, from_json_object_updated ) def patch(): """Patch Protobuf JSON Encoder / Decoder with all desired Feast types.""" _patch_feast_value_json_encoding() _patch_feast_repeated_value_json_encoding() _patch_feast_feature_list_json_encoding() |
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