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| 1 | +# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. |
| 2 | +# |
| 3 | +# Licensed under the Apache License, Version 2.0 (the "License"). You |
| 4 | +# may not use this file except in compliance with the License. A copy of |
| 5 | +# the License is located at |
| 6 | +# |
| 7 | +# http://aws.amazon.com/apache2.0/ |
| 8 | +# |
| 9 | +# or in the "license" file accompanying this file. This file is |
| 10 | +# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF |
| 11 | +# ANY KIND, either express or implied. See the License for the specific |
| 12 | +# language governing permissions and limitations under the License. |
| 13 | +"""This module stores filters related to SageMaker JumpStart.""" |
| 14 | +from __future__ import absolute_import |
| 15 | +from ast import literal_eval |
| 16 | +from enum import Enum |
| 17 | +from typing import List, Union, Any |
| 18 | + |
| 19 | +from sagemaker.jumpstart.types import JumpStartDataHolderType |
| 20 | + |
| 21 | + |
| 22 | +class BooleanValues(str, Enum): |
| 23 | + """Enum class for boolean values.""" |
| 24 | + |
| 25 | + TRUE = "true" |
| 26 | + FALSE = "false" |
| 27 | + UNKNOWN = "unknown" |
| 28 | + UNEVALUATED = "unevaluated" |
| 29 | + |
| 30 | + |
| 31 | +class FilterOperators(str, Enum): |
| 32 | + """Enum class for filter operators for JumpStart models.""" |
| 33 | + |
| 34 | + EQUALS = "equals" |
| 35 | + NOT_EQUALS = "not_equals" |
| 36 | + IN = "in" |
| 37 | + NOT_IN = "not_in" |
| 38 | + |
| 39 | + |
| 40 | +FILTER_OPERATOR_STRING_MAPPINGS = { |
| 41 | + FilterOperators.EQUALS: ["===", "==", "equals", "is"], |
| 42 | + FilterOperators.NOT_EQUALS: ["!==", "!=", "not equals", "is not"], |
| 43 | + FilterOperators.IN: ["in"], |
| 44 | + FilterOperators.NOT_IN: ["not in"], |
| 45 | +} |
| 46 | + |
| 47 | + |
| 48 | +class Operand: |
| 49 | + """Operand class for filtering JumpStart content.""" |
| 50 | + |
| 51 | + def __init__( |
| 52 | + self, unresolved_value: Any, resolved_value: BooleanValues = BooleanValues.UNEVALUATED |
| 53 | + ): |
| 54 | + self.unresolved_value = unresolved_value |
| 55 | + self.resolved_value = resolved_value |
| 56 | + |
| 57 | + def __iter__(self) -> Any: |
| 58 | + """Returns an iterator.""" |
| 59 | + yield self |
| 60 | + |
| 61 | + def eval(self) -> None: |
| 62 | + """Evaluates operand.""" |
| 63 | + return |
| 64 | + |
| 65 | + @staticmethod |
| 66 | + def validate_operand(operand: Any) -> Any: |
| 67 | + """Validate operand and return ``Operand`` object.""" |
| 68 | + if isinstance(operand, str): |
| 69 | + if operand.lower() == BooleanValues.TRUE.lower(): |
| 70 | + operand = Operand(operand, resolved_value=BooleanValues.TRUE) |
| 71 | + elif operand.lower() == BooleanValues.FALSE.lower(): |
| 72 | + operand = Operand(operand, resolved_value=BooleanValues.FALSE) |
| 73 | + elif operand.lower() == BooleanValues.UNKNOWN.lower(): |
| 74 | + operand = Operand(operand, resolved_value=BooleanValues.UNKNOWN) |
| 75 | + else: |
| 76 | + operand = Operand(parse_filter_string(operand)) |
| 77 | + elif not issubclass(type(operand), Operand): |
| 78 | + raise RuntimeError() |
| 79 | + return operand |
| 80 | + |
| 81 | + |
| 82 | +class Operator(Operand): |
| 83 | + """Operator class for filtering JumpStart content.""" |
| 84 | + |
| 85 | + def __init__( |
| 86 | + self, |
| 87 | + resolved_value: BooleanValues = BooleanValues.UNEVALUATED, |
| 88 | + unresolved_value: Any = None, |
| 89 | + ): |
| 90 | + """Initializes ``Operator`` instance. |
| 91 | +
|
| 92 | + Args: |
| 93 | + resolved_value (BooleanValues): Optional. The resolved value of the operator. |
| 94 | + (Default: BooleanValues.UNEVALUATED). |
| 95 | + unresolved_value (Any): Optional. The unresolved value of the operator. |
| 96 | + (Default: None). |
| 97 | + """ |
| 98 | + super().__init__(unresolved_value=unresolved_value, resolved_value=resolved_value) |
| 99 | + |
| 100 | + def eval(self) -> None: |
| 101 | + """Evaluates operator.""" |
| 102 | + return |
| 103 | + |
| 104 | + def __iter__(self) -> Any: |
| 105 | + """Returns an iterator.""" |
| 106 | + yield self |
| 107 | + |
| 108 | + |
| 109 | +class And(Operator): |
| 110 | + """And operator class for filtering JumpStart content.""" |
| 111 | + |
| 112 | + def __init__( |
| 113 | + self, |
| 114 | + *operands: Union[Operand, str], |
| 115 | + ) -> None: |
| 116 | + """Instantiates And object. |
| 117 | +
|
| 118 | + Args: |
| 119 | + operand (Operand): Operand for And-ing. |
| 120 | + """ |
| 121 | + self.operands: List[Operand] = list(operands) # type: ignore |
| 122 | + for i in range(len(self.operands)): |
| 123 | + self.operands[i] = Operand.validate_operand(self.operands[i]) |
| 124 | + super().__init__() |
| 125 | + |
| 126 | + def eval(self) -> None: |
| 127 | + """Evaluates operator.""" |
| 128 | + incomplete_expression = False |
| 129 | + for operand in self.operands: |
| 130 | + if not issubclass(type(operand), Operand): |
| 131 | + raise RuntimeError() |
| 132 | + if operand.resolved_value == BooleanValues.UNEVALUATED: |
| 133 | + operand.eval() |
| 134 | + if operand.resolved_value == BooleanValues.UNEVALUATED: |
| 135 | + raise RuntimeError() |
| 136 | + if not isinstance(operand.resolved_value, BooleanValues): |
| 137 | + raise RuntimeError() |
| 138 | + if operand.resolved_value == BooleanValues.FALSE: |
| 139 | + self.resolved_value = BooleanValues.FALSE |
| 140 | + return |
| 141 | + if operand.resolved_value == BooleanValues.UNKNOWN: |
| 142 | + incomplete_expression = True |
| 143 | + if not incomplete_expression: |
| 144 | + self.resolved_value = BooleanValues.TRUE |
| 145 | + else: |
| 146 | + self.resolved_value = BooleanValues.UNKNOWN |
| 147 | + |
| 148 | + def __iter__(self) -> Any: |
| 149 | + """Returns an iterator.""" |
| 150 | + for operand in self.operands: |
| 151 | + yield from operand |
| 152 | + yield self |
| 153 | + |
| 154 | + |
| 155 | +class Constant(Operator): |
| 156 | + """Constant operator class for filtering JumpStart content.""" |
| 157 | + |
| 158 | + def __init__( |
| 159 | + self, |
| 160 | + constant: BooleanValues, |
| 161 | + ): |
| 162 | + """Instantiates Constant operator object. |
| 163 | +
|
| 164 | + Args: |
| 165 | + constant (BooleanValues]): Value of constant. |
| 166 | + """ |
| 167 | + super().__init__(constant) |
| 168 | + |
| 169 | + def eval(self) -> None: |
| 170 | + """Evaluates constant""" |
| 171 | + return |
| 172 | + |
| 173 | + def __iter__(self) -> Any: |
| 174 | + """Returns an iterator.""" |
| 175 | + yield self |
| 176 | + |
| 177 | + |
| 178 | +class Identity(Operator): |
| 179 | + """Identity operator class for filtering JumpStart content.""" |
| 180 | + |
| 181 | + def __init__( |
| 182 | + self, |
| 183 | + operand: Union[Operand, str], |
| 184 | + ): |
| 185 | + """Instantiates Identity object. |
| 186 | +
|
| 187 | + Args: |
| 188 | + operand (Union[Operand, str]): Operand for identity operation. |
| 189 | + """ |
| 190 | + super().__init__() |
| 191 | + self.operand = Operand.validate_operand(operand) |
| 192 | + |
| 193 | + def __iter__(self) -> Any: |
| 194 | + """Returns an iterator.""" |
| 195 | + yield self |
| 196 | + yield from self.operand |
| 197 | + |
| 198 | + def eval(self) -> Any: |
| 199 | + """Evaluates operator.""" |
| 200 | + if not issubclass(type(self.operand), Operand): |
| 201 | + raise RuntimeError() |
| 202 | + if self.operand.resolved_value == BooleanValues.UNEVALUATED: |
| 203 | + self.operand.eval() |
| 204 | + if self.operand.resolved_value == BooleanValues.UNEVALUATED: |
| 205 | + raise RuntimeError() |
| 206 | + if not isinstance(self.operand.resolved_value, BooleanValues): |
| 207 | + raise RuntimeError(self.operand.resolved_value) |
| 208 | + self.resolved_value = self.operand.resolved_value |
| 209 | + |
| 210 | + |
| 211 | +class Or(Operator): |
| 212 | + """Or operator class for filtering JumpStart content.""" |
| 213 | + |
| 214 | + def __init__( |
| 215 | + self, |
| 216 | + *operands: Union[Operand, str], |
| 217 | + ) -> None: |
| 218 | + """Instantiates Or object. |
| 219 | +
|
| 220 | + Args: |
| 221 | + operands (Operand): Operand for Or-ing. |
| 222 | + """ |
| 223 | + self.operands: List[Operand] = list(operands) # type: ignore |
| 224 | + for i in range(len(self.operands)): |
| 225 | + self.operands[i] = Operand.validate_operand(self.operands[i]) |
| 226 | + super().__init__() |
| 227 | + |
| 228 | + def eval(self) -> None: |
| 229 | + """Evaluates operator.""" |
| 230 | + incomplete_expression = False |
| 231 | + for operand in self.operands: |
| 232 | + if not issubclass(type(operand), Operand): |
| 233 | + raise RuntimeError() |
| 234 | + if operand.resolved_value == BooleanValues.UNEVALUATED: |
| 235 | + operand.eval() |
| 236 | + if operand.resolved_value == BooleanValues.UNEVALUATED: |
| 237 | + raise RuntimeError() |
| 238 | + if not isinstance(operand.resolved_value, BooleanValues): |
| 239 | + raise RuntimeError() |
| 240 | + if operand.resolved_value == BooleanValues.TRUE: |
| 241 | + self.resolved_value = BooleanValues.TRUE |
| 242 | + return |
| 243 | + if operand.resolved_value == BooleanValues.UNKNOWN: |
| 244 | + incomplete_expression = True |
| 245 | + if not incomplete_expression: |
| 246 | + self.resolved_value = BooleanValues.FALSE |
| 247 | + else: |
| 248 | + self.resolved_value = BooleanValues.UNKNOWN |
| 249 | + |
| 250 | + def __iter__(self) -> Any: |
| 251 | + """Returns an iterator.""" |
| 252 | + for operand in self.operands: |
| 253 | + yield from operand |
| 254 | + yield self |
| 255 | + |
| 256 | + |
| 257 | +class Not(Operator): |
| 258 | + """Not operator class for filtering JumpStart content.""" |
| 259 | + |
| 260 | + def __init__( |
| 261 | + self, |
| 262 | + operand: Union[Operand, str], |
| 263 | + ) -> None: |
| 264 | + """Instantiates Not object. |
| 265 | +
|
| 266 | + Args: |
| 267 | + operand (Operand): Operand for Not-ing. |
| 268 | + """ |
| 269 | + self.operand: Operand = Operand.validate_operand(operand) |
| 270 | + super().__init__() |
| 271 | + |
| 272 | + def eval(self) -> None: |
| 273 | + """Evaluates operator.""" |
| 274 | + |
| 275 | + if not issubclass(type(self.operand), Operand): |
| 276 | + raise RuntimeError() |
| 277 | + if self.operand.resolved_value == BooleanValues.UNEVALUATED: |
| 278 | + self.operand.eval() |
| 279 | + if self.operand.resolved_value == BooleanValues.UNEVALUATED: |
| 280 | + raise RuntimeError() |
| 281 | + if not isinstance(self.operand.resolved_value, BooleanValues): |
| 282 | + raise RuntimeError() |
| 283 | + if self.operand.resolved_value == BooleanValues.TRUE: |
| 284 | + self.resolved_value = BooleanValues.FALSE |
| 285 | + return |
| 286 | + if self.operand.resolved_value == BooleanValues.FALSE: |
| 287 | + self.resolved_value = BooleanValues.TRUE |
| 288 | + return |
| 289 | + self.resolved_value = BooleanValues.UNKNOWN |
| 290 | + |
| 291 | + def __iter__(self) -> Any: |
| 292 | + """Returns an iterator.""" |
| 293 | + yield from self.operand |
| 294 | + yield self |
| 295 | + |
| 296 | + |
| 297 | +class ModelFilter(JumpStartDataHolderType): |
| 298 | + """Data holder class to store model filters. |
| 299 | +
|
| 300 | + For a given filter string "task == ic", the key corresponds to |
| 301 | + "task" and the value corresponds to "ic", with the operation being |
| 302 | + "==". |
| 303 | + """ |
| 304 | + |
| 305 | + __slots__ = ["key", "value", "operator"] |
| 306 | + |
| 307 | + def __init__(self, key: str, value: str, operator: str): |
| 308 | + """Instantiates ``ModelFilter`` object. |
| 309 | +
|
| 310 | + Args: |
| 311 | + key (str): The key in metadata for the model filter. |
| 312 | + value (str): The value of the metadata for the model filter. |
| 313 | + operator (str): The operator used in the model filter. |
| 314 | + """ |
| 315 | + self.key = key |
| 316 | + self.value = value |
| 317 | + self.operator = operator |
| 318 | + |
| 319 | + |
| 320 | +def parse_filter_string(filter_string: str) -> ModelFilter: |
| 321 | + """Parse filter string and return a serialized ``ModelFilter`` object. |
| 322 | +
|
| 323 | + Args: |
| 324 | + filter_string (str): The filter string to be serialized to an object. |
| 325 | + """ |
| 326 | + |
| 327 | + pad_alphabetic_operator = ( |
| 328 | + lambda operator: " " + operator + " " |
| 329 | + if any(character.isalpha() for character in operator) |
| 330 | + else operator |
| 331 | + ) |
| 332 | + |
| 333 | + acceptable_operators_in_parse_order = ( |
| 334 | + list( |
| 335 | + map( |
| 336 | + pad_alphabetic_operator, FILTER_OPERATOR_STRING_MAPPINGS[FilterOperators.NOT_EQUALS] |
| 337 | + ) |
| 338 | + ) |
| 339 | + + list( |
| 340 | + map(pad_alphabetic_operator, FILTER_OPERATOR_STRING_MAPPINGS[FilterOperators.NOT_IN]) |
| 341 | + ) |
| 342 | + + list( |
| 343 | + map(pad_alphabetic_operator, FILTER_OPERATOR_STRING_MAPPINGS[FilterOperators.EQUALS]) |
| 344 | + ) |
| 345 | + + list(map(pad_alphabetic_operator, FILTER_OPERATOR_STRING_MAPPINGS[FilterOperators.IN])) |
| 346 | + ) |
| 347 | + for operator in acceptable_operators_in_parse_order: |
| 348 | + split_filter_string = filter_string.split(operator) |
| 349 | + if len(split_filter_string) == 2: |
| 350 | + return ModelFilter( |
| 351 | + split_filter_string[0].strip(), split_filter_string[1].strip(), operator.strip() |
| 352 | + ) |
| 353 | + raise RuntimeError(f"Cannot parse filter string: {filter_string}") |
| 354 | + |
| 355 | + |
| 356 | +def evaluate_filter_expression( # pylint: disable=too-many-return-statements |
| 357 | + model_filter: ModelFilter, cached_model_value: Any |
| 358 | +) -> BooleanValues: |
| 359 | + """Evaluates model filter with cached model spec value, returns boolean. |
| 360 | +
|
| 361 | + Args: |
| 362 | + model_filter (ModelFilter): The model filter for evaluation. |
| 363 | + cached_model_value (Any): The value in the model manifest/spec that should be used to |
| 364 | + evaluate the filter. |
| 365 | + """ |
| 366 | + if model_filter.operator in FILTER_OPERATOR_STRING_MAPPINGS[FilterOperators.EQUALS]: |
| 367 | + model_filter_value = model_filter.value |
| 368 | + if isinstance(cached_model_value, bool): |
| 369 | + cached_model_value = str(cached_model_value).lower() |
| 370 | + model_filter_value = model_filter.value.lower() |
| 371 | + if str(model_filter_value) == str(cached_model_value): |
| 372 | + return BooleanValues.TRUE |
| 373 | + return BooleanValues.FALSE |
| 374 | + if model_filter.operator in FILTER_OPERATOR_STRING_MAPPINGS[FilterOperators.NOT_EQUALS]: |
| 375 | + if isinstance(cached_model_value, bool): |
| 376 | + cached_model_value = str(cached_model_value).lower() |
| 377 | + model_filter.value = model_filter.value.lower() |
| 378 | + if str(model_filter.value) == str(cached_model_value): |
| 379 | + return BooleanValues.FALSE |
| 380 | + return BooleanValues.TRUE |
| 381 | + if model_filter.operator in FILTER_OPERATOR_STRING_MAPPINGS[FilterOperators.IN]: |
| 382 | + if cached_model_value in literal_eval(model_filter.value): |
| 383 | + return BooleanValues.TRUE |
| 384 | + return BooleanValues.FALSE |
| 385 | + if model_filter.operator in FILTER_OPERATOR_STRING_MAPPINGS[FilterOperators.NOT_IN]: |
| 386 | + if cached_model_value in literal_eval(model_filter.value): |
| 387 | + return BooleanValues.FALSE |
| 388 | + return BooleanValues.TRUE |
| 389 | + raise RuntimeError(f"Bad operator: {model_filter.operator}") |
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