Coverage for opt/mealie/lib/python3.12/site-packages/mealie/repos/repository_generic.py: 84%

275 statements  

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1from __future__ import annotations 1i

2 

3import random 1i

4from collections.abc import Iterable 1i

5from datetime import UTC, datetime 1i

6from math import ceil 1i

7from typing import Any 1i

8 

9from fastapi import HTTPException 1i

10from pydantic import UUID4, BaseModel 1i

11from sqlalchemy import ColumnElement, Select, case, delete, func, nulls_first, nulls_last, select 1i

12from sqlalchemy.orm import InstrumentedAttribute 1i

13from sqlalchemy.orm.session import Session 1i

14from sqlalchemy.sql import sqltypes 1i

15 

16from mealie.core.root_logger import get_logger 1i

17from mealie.db.models._model_base import SqlAlchemyBase 1i

18from mealie.schema._mealie import MealieModel 1i

19from mealie.schema.response.pagination import ( 1i

20 OrderByNullPosition, 

21 OrderDirection, 

22 PaginationBase, 

23 PaginationQuery, 

24 RequestQuery, 

25) 

26from mealie.schema.response.query_filter import QueryFilterBuilder 1i

27from mealie.schema.response.query_search import SearchFilter 1i

28 

29from ._utils import NOT_SET, NotSet 1i

30 

31 

32class RepositoryGeneric[Schema: MealieModel, Model: SqlAlchemyBase]: 1i

33 """A Generic BaseAccess Model method to perform common operations on the database 

34 

35 Args: 

36 Schema: Represents the Pydantic Model 

37 Model: Represents the SqlAlchemyModel Model 

38 """ 

39 

40 session: Session 1i

41 

42 _group_id: UUID4 | None = None 1i

43 _household_id: UUID4 | None = None 1i

44 

45 def __init__( 1i

46 self, 

47 session: Session, 

48 primary_key: str, 

49 sql_model: type[Model], 

50 schema: type[Schema], 

51 ) -> None: 

52 self.session = session 1iqfpodjbehgklcmna

53 self.primary_key = primary_key 1iqfpodjbehgklcmna

54 self.model = sql_model 1iqfpodjbehgklcmna

55 self.schema = schema 1iqfpodjbehgklcmna

56 

57 self.logger = get_logger() 1iqfpodjbehgklcmna

58 

59 @property 1i

60 def group_id(self) -> UUID4 | None: 1i

61 return self._group_id 1iqfpodjbehgklcmna

62 

63 @property 1i

64 def household_id(self) -> UUID4 | None: 1i

65 return self._household_id 1iqfpodjbehgklcmna

66 

67 @property 1i

68 def column_aliases(self) -> dict[str, ColumnElement]: 1i

69 return {} 1ifdjbehgklcmna

70 

71 def _random_seed(self) -> str: 1i

72 return str(datetime.now(tz=UTC)) 1fdjbehgklcma

73 

74 def _log_exception(self, e: Exception) -> None: 1i

75 self.logger.error(f"Error processing query for Repo model={self.model.__name__} schema={self.schema.__name__}") 1fdjbehca

76 self.logger.error(e) 1fdjbehca

77 

78 def _query(self, override_schema: type[MealieModel] | None = None, with_options=True): 1i

79 q = select(self.model) 1iqfpodjbehgklcmna

80 if with_options: 1iqfpodjbehgklcmna

81 schema = override_schema or self.schema 1qfpodjbehgklcmna

82 return q.options(*schema.loader_options()) 1qfpodjbehgklcmna

83 else: 

84 return q 1ifdjbehgklcmna

85 

86 def _filter_builder(self, **kwargs) -> dict[str, Any]: 1i

87 dct = {} 1iqfpodjbehgklcmna

88 if self.group_id: 1iqfpodjbehgklcmna

89 dct["group_id"] = self.group_id 1qfpodjbehgklcmna

90 if self.household_id: 1iqfpodjbehgklcmna

91 dct["household_id"] = self.household_id 1qfpodjbehgklcmna

92 

93 return {**dct, **kwargs} 1iqfpodjbehgklcmna

94 

95 def get_all( 1i

96 self, 

97 limit: int | None = None, 

98 order_by: str | None = None, 

99 order_descending: bool = True, 

100 override=None, 

101 ) -> list[Schema]: 

102 pq = PaginationQuery( 1ia

103 per_page=limit or -1, 

104 order_by=order_by, 

105 order_direction=OrderDirection.desc if order_descending else OrderDirection.asc, 

106 page=1, 

107 ) 

108 

109 results = self.page_all(pq, override=override) 1ia

110 

111 return results.items 1ia

112 

113 def multi_query( 1i

114 self, 

115 query_by: dict[str, str | bool | int | UUID4], 

116 start=0, 

117 limit: int | None = None, 

118 override_schema=None, 

119 order_by: str | None = None, 

120 ) -> list[Schema]: 

121 # sourcery skip: remove-unnecessary-cast 

122 eff_schema = override_schema or self.schema 1qfpodjbehgklcmna

123 

124 fltr = self._filter_builder(**query_by) 1qfpodjbehgklcmna

125 q = self._query(override_schema=eff_schema).filter_by(**fltr) 1qfpodjbehgklcmna

126 

127 if order_by: 127 ↛ 128line 127 didn't jump to line 128 because the condition on line 127 was never true1qfpodjbehgklcmna

128 if order_attr := getattr(self.model, str(order_by)): 

129 order_attr = order_attr.desc() 

130 q = q.order_by(order_attr) 

131 

132 q = q.offset(start).limit(limit) 1qfpodjbehgklcmna

133 result = self.session.execute(q).unique().scalars().all() 1qfpodjbehgklcmna

134 return [eff_schema.model_validate(x) for x in result] 1qfpodjbehgklcmna

135 

136 def _query_one(self, match_value: str | int | UUID4, match_key: str | None = None) -> Model: 1i

137 """ 

138 Query the sql database for one item an return the sql alchemy model 

139 object. If no match key is provided the primary_key attribute will be used. 

140 """ 

141 if match_key is None: 1fpodbegkcna

142 match_key = self.primary_key 1fpodbca

143 

144 fltr = self._filter_builder(**{match_key: match_value}) 1fpodbegkcna

145 return self.session.execute(self._query().filter_by(**fltr)).unique().scalars().one() 1fpodbegkcna

146 

147 def get_one( 1i

148 self, 

149 value: str | int | UUID4, 

150 key: str | None = None, 

151 any_case=False, 

152 override_schema=None, 

153 ) -> Schema | None: 

154 key = key or self.primary_key 1qfpodjbehgklcmna

155 eff_schema = override_schema or self.schema 1qfpodjbehgklcmna

156 

157 q = self._query(override_schema=eff_schema) 1qfpodjbehgklcmna

158 

159 if any_case: 1qfpodjbehgklcmna

160 search_attr = getattr(self.model, key) 1fodjbehgklcma

161 q = q.where(func.lower(search_attr) == str(value).lower()).filter_by(**self._filter_builder()) 1fodjbehgklcma

162 else: 

163 q = q.filter_by(**self._filter_builder(**{key: value})) 1qfpodjbehgklcmna

164 

165 result = self.session.execute(q).unique().scalars().one_or_none() 1qfpodjbehgklcmna

166 

167 if not result: 1qfpodjbehgklcmna

168 return None 1qfodjbehgklcma

169 

170 return eff_schema.model_validate(result) 1fpodjbehgklcmna

171 

172 def create(self, data: Schema | BaseModel | dict) -> Schema: 1i

173 try: 1iqfpodjbehgklcmna

174 data = data if isinstance(data, dict) else data.model_dump() 1iqfpodjbehgklcmna

175 new_document = self.model(session=self.session, **data) 1iqfpodjbehgklcmna

176 self.session.add(new_document) 1iqfpodjbehgklcmna

177 self.session.commit() 1iqfpodjbehgklcmna

178 except Exception: 1qfodjbehgklcma

179 self.session.rollback() 1qfodjbehgklcma

180 raise 1qfodjbehgklcma

181 

182 self.session.refresh(new_document) 1iqfpodjbehgklcmna

183 

184 return self.schema.model_validate(new_document) 1iqfpodjbehgklcmna

185 

186 def create_many(self, data: Iterable[Schema | dict]) -> list[Schema]: 1i

187 new_documents = [] 1fdjbehgklcmna

188 for document in data: 1fdjbehgklcmna

189 document = document if isinstance(document, dict) else document.model_dump() 1djbehgklcmna

190 new_document = self.model(session=self.session, **document) 1djbehgklcmna

191 new_documents.append(new_document) 1djbehgklcmna

192 

193 self.session.add_all(new_documents) 1fdjbehgklcmna

194 self.session.commit() 1fdjbehgklcmna

195 

196 for created_document in new_documents: 1fdjbehgklcmna

197 self.session.refresh(created_document) 1djbehgklcmna

198 

199 return [self.schema.model_validate(x) for x in new_documents] 1fdjbehgklcmna

200 

201 def update(self, match_value: str | int | UUID4, new_data: dict | BaseModel) -> Schema: 1i

202 """Update a database entry. 

203 Args: 

204 session (Session): Database Session 

205 match_value (str): Match "key" 

206 new_data (str): Match "value" 

207 

208 Returns: 

209 dict: Returns a dictionary representation of the database entry 

210 """ 

211 new_data = new_data if isinstance(new_data, dict) else new_data.model_dump() 1fpodbca

212 

213 entry = self._query_one(match_value=match_value) 1fpodbca

214 entry.update(session=self.session, **new_data) 1fpodbca

215 

216 self.session.commit() 1fpodbca

217 return self.schema.model_validate(entry) 1fpodbca

218 

219 def update_many(self, data: Iterable[Schema | dict]) -> list[Schema]: 1i

220 document_data_by_id: dict[str, dict] = {} 

221 for document in data: 

222 document_data = document if isinstance(document, dict) else document.model_dump() 

223 document_data_by_id[document_data["id"]] = document_data 

224 

225 documents_to_update_query = self._query().filter(self.model.id.in_(list(document_data_by_id.keys()))) 

226 documents_to_update = self.session.execute(documents_to_update_query).unique().scalars().all() 

227 

228 updated_documents = [] 

229 for document_to_update in documents_to_update: 229 ↛ 230line 229 didn't jump to line 230 because the loop on line 229 never started

230 data = document_data_by_id[document_to_update.id] # type: ignore 

231 document_to_update.update(session=self.session, **data) # type: ignore 

232 updated_documents.append(document_to_update) 

233 

234 self.session.commit() 

235 return [self.schema.model_validate(x) for x in updated_documents] 

236 

237 def patch(self, match_value: str | int | UUID4, new_data: dict | BaseModel) -> Schema: 1i

238 new_data = new_data if isinstance(new_data, dict) else new_data.model_dump() 

239 

240 entry = self._query_one(match_value=match_value) 

241 

242 entry_as_dict = self.schema.model_validate(entry).model_dump() 

243 entry_as_dict.update(new_data) 

244 

245 return self.update(match_value, entry_as_dict) 

246 

247 def delete(self, value, match_key: str | None = None) -> Schema: 1i

248 match_key = match_key or self.primary_key 1fdbegkcna

249 

250 result = self._query_one(value, match_key) 1fdbegkcna

251 result_as_model = self.schema.model_validate(result) 1begcna

252 

253 try: 1begcna

254 self.session.delete(result) 1begcna

255 self.session.commit() 1begcna

256 except Exception as e: 

257 self.session.rollback() 

258 raise e 

259 

260 return result_as_model 1begcna

261 

262 def delete_many(self, values: Iterable) -> list[Schema]: 1i

263 query = self._query().filter(self.model.id.in_(values)) 1fa

264 results = self.session.execute(query).unique().scalars().all() 1fa

265 results_as_model = [self.schema.model_validate(result) for result in results] 1fa

266 

267 try: 1fa

268 # we create a delete statement for each row 

269 # we don't delete the whole query in one statement because postgres doesn't cascade correctly 

270 for result in results: 270 ↛ 271line 270 didn't jump to line 271 because the loop on line 270 never started1fa

271 self.session.delete(result) 

272 

273 self.session.commit() 1fa

274 except Exception as e: 

275 self.session.rollback() 

276 raise e 

277 

278 return results_as_model 1fa

279 

280 def delete_all(self) -> None: 1i

281 delete(self.model) 

282 self.session.commit() 

283 

284 def count_all(self, match_key=None, match_value=None) -> int: 1i

285 q = select(func.count(self.model.id)) 

286 if None not in [match_key, match_value]: 

287 q = q.filter_by(**{match_key: match_value}) 

288 return self.session.scalar(q) 

289 

290 def _count_attribute( 1i

291 self, 

292 attribute_name: str, 

293 attr_match: str | None = None, 

294 count=True, 

295 override_schema=None, 

296 ) -> int | list[Schema]: # sourcery skip: assign-if-exp 

297 eff_schema = override_schema or self.schema 

298 

299 if count: 

300 q = select(func.count(self.model.id)).filter(attribute_name == attr_match) 

301 return self.session.scalar(q) 

302 else: 

303 q = self._query(override_schema=eff_schema).filter(attribute_name == attr_match) 

304 return [eff_schema.model_validate(x) for x in self.session.execute(q).scalars().all()] 

305 

306 def page_all(self, pagination: PaginationQuery, override=None, search: str | None = None) -> PaginationBase[Schema]: 1i

307 """ 

308 pagination is a method to interact with the filtered database table and return a paginated result 

309 using the PaginationBase that provides several data points that are needed to manage pagination 

310 on the client side. This method does utilize the _filter_build method to ensure that the results 

311 are filtered by the group id when applicable. 

312 

313 NOTE: When you provide an override you'll need to manually type the result of this method 

314 as the override, as the type system is not able to infer the result of this method. 

315 """ 

316 eff_schema = override or self.schema 1ifdjbehgklcmna

317 # Copy this, because calling methods (e.g. tests) might rely on it not getting mutated 

318 pagination_result = pagination.model_copy() 1ifdjbehgklcmna

319 q = self._query(override_schema=eff_schema, with_options=False) 1ifdjbehgklcmna

320 

321 fltr = self._filter_builder() 1ifdjbehgklcmna

322 q = q.filter_by(**fltr) 1ifdjbehgklcmna

323 if search: 1ifdjbehgklcmna

324 q = self.add_search_to_query(q, eff_schema, search) 1djbehgklcma

325 

326 if not pagination_result.order_by and not search: 1ifdjbehgklcmna

327 # default ordering if not searching 

328 pagination_result.order_by = "created_at" 1ifdjbehgklcmna

329 

330 q, count, total_pages = self.add_pagination_to_query(q, pagination_result) 1ifdjbehgklcmna

331 

332 # Apply options late, so they do not get used for counting 

333 q = q.options(*eff_schema.loader_options()) 1ifdjbehgklcmna

334 try: 1ifdjbehgklcmna

335 data = self.session.execute(q).unique().scalars().all() 1ifdjbehgklcmna

336 except Exception as e: 1fdjbehca

337 self._log_exception(e) 1fdjbehca

338 self.session.rollback() 1fdjbehca

339 raise e 1fdjbehca

340 return PaginationBase( 1ifdjbehgklcmna

341 page=pagination_result.page, 

342 per_page=pagination_result.per_page, 

343 total=count, 

344 total_pages=total_pages, 

345 items=[eff_schema.model_validate(s) for s in data], 

346 ) 

347 

348 def add_pagination_to_query(self, query: Select, pagination: PaginationQuery) -> tuple[Select, int, int]: 1i

349 """ 

350 Adds pagination data to an existing query. 

351 

352 :returns: 

353 - query - modified query with pagination data 

354 - count - total number of records (without pagination) 

355 - total_pages - the total number of pages in the query 

356 """ 

357 

358 if pagination.query_filter: 1ifdjbehgklcmna

359 try: 1fdjbehgklcmna

360 query_filter_builder = QueryFilterBuilder(pagination.query_filter) 1fdjbehgklcmna

361 query = query_filter_builder.filter_query(query, model=self.model, column_aliases=self.column_aliases) 1fdjbehgklcmna

362 

363 except ValueError as e: 1djbehgla

364 self.logger.error(e) 1dbehgla

365 raise HTTPException(status_code=400, detail=str(e)) from e 1dbehgla

366 

367 count_query = select(func.count()).select_from(query.subquery()) 1ifdjbehgklcmna

368 count = self.session.scalar(count_query) 1ifdjbehgklcmna

369 if not count: 1ifdjbehgklcmna

370 count = 0 1ifdjbehgklcmna

371 

372 # interpret -1 as "get_all" 

373 if pagination.per_page == -1: 1ifdjbehgklcmna

374 pagination.per_page = count 1ifdjbehgklcmna

375 

376 try: 1ifdjbehgklcmna

377 total_pages = ceil(count / pagination.per_page) 1ifdjbehgklcmna

378 except ZeroDivisionError: 1ifdbhkca

379 total_pages = 0 1ifdbhkca

380 

381 # interpret -1 as "last page" 

382 if pagination.page == -1: 382 ↛ 383line 382 didn't jump to line 383 because the condition on line 382 was never true1ifdjbehgklcmna

383 pagination.page = total_pages 

384 

385 # failsafe for user input error 

386 if pagination.page < 1: 1ifdjbehgklcmna

387 pagination.page = 1 1fdjbehgklcmna

388 

389 query = self.add_order_by_to_query(query, pagination) 1ifdjbehgklcmna

390 return query.limit(pagination.per_page).offset((pagination.page - 1) * pagination.per_page), count, total_pages 1ifdjbehgklcmna

391 

392 def add_order_attr_to_query( 1i

393 self, 

394 query: Select, 

395 order_attr: InstrumentedAttribute, 

396 order_dir: OrderDirection, 

397 order_by_null: OrderByNullPosition | None, 

398 ) -> Select: 

399 order_attr = self.column_aliases.get(order_attr.key, order_attr) 1ifdjbehgklcmna

400 

401 # queries handle uppercase and lowercase differently, which is undesirable 

402 if isinstance(order_attr.type, sqltypes.String): 1ifdjbehgklcmna

403 order_attr = func.lower(order_attr) 1djbehgklcma

404 

405 if order_dir is OrderDirection.asc: 1ifdjbehgklcmna

406 order_attr = order_attr.asc() 1fdjbehgklcma

407 elif order_dir is OrderDirection.desc: 407 ↛ 410line 407 didn't jump to line 410 because the condition on line 407 was always true1ifdjbehgklcmna

408 order_attr = order_attr.desc() 1ifdjbehgklcmna

409 

410 if order_by_null is OrderByNullPosition.first: 1ifdjbehgklcmna

411 order_attr = nulls_first(order_attr) 1djbehgklcma

412 elif order_by_null is OrderByNullPosition.last: 1ifdjbehgklcmna

413 order_attr = nulls_last(order_attr) 1djbehgklcma

414 

415 return query.order_by(order_attr) 1ifdjbehgklcmna

416 

417 def add_order_by_to_query(self, query: Select, request_query: RequestQuery) -> Select: 1i

418 if not request_query.order_by: 1ifdjbehgklcmna

419 return query 1djbehglcma

420 

421 elif request_query.order_by == "random": 1ifdjbehgklcmna

422 # randomize outside of database, since not all db's can set random seeds 

423 # this solution is db-independent & stable to paging 

424 temp_query = query.with_only_columns(self.model.id) 1fdjbehgklcma

425 allids = self.session.execute(temp_query).scalars().all() # fast because id is indexed 1fdjbehgklcma

426 if not allids: 426 ↛ 429line 426 didn't jump to line 429 because the condition on line 426 was always true1fdjbehgklcma

427 return query 1fdjbehgklcma

428 

429 order = list(range(len(allids))) 

430 random.seed(request_query.pagination_seed) 

431 random.shuffle(order) 

432 random_dict = dict(zip(allids, order, strict=True)) 

433 case_stmt = case(random_dict, value=self.model.id) 

434 return query.order_by(case_stmt) 

435 

436 else: 

437 for order_by_val in request_query.order_by.split(","): 1ifdjbehgklcmna

438 try: 1ifdjbehgklcmna

439 order_by_val = order_by_val.strip() 1ifdjbehgklcmna

440 if ":" in order_by_val: 1ifdjbehgklcmna

441 order_by, order_dir_val = order_by_val.split(":") 1ga

442 order_dir = OrderDirection(order_dir_val) 1ga

443 else: 

444 order_by = order_by_val 1ifdjbehgklcmna

445 order_dir = request_query.order_direction 1ifdjbehgklcmna

446 

447 _, order_attr, query = QueryFilterBuilder.get_model_and_model_attr_from_attr_string( 1ifdjbehgklcmna

448 order_by, self.model, query=query 

449 ) 

450 

451 query = self.add_order_attr_to_query( 1ifdjbehgklcmna

452 query, order_attr, order_dir, request_query.order_by_null_position 

453 ) 

454 

455 except ValueError as e: 1fdjbehgklcma

456 raise HTTPException( 1fdjbehgklcma

457 status_code=400, 

458 detail=f'Invalid order_by statement "{request_query.order_by}": "{order_by_val}" is invalid', 

459 ) from e 

460 

461 return query 1ifdjbehgklcmna

462 

463 def add_search_to_query(self, query: Select, schema: type[Schema], search: str) -> Select: 1i

464 search_filter = SearchFilter(self.session, search, schema._normalize_search) 1djbehgklcma

465 return search_filter.filter_query_by_search(query, schema, self.model) 1djbehgklcma

466 

467 

468class GroupRepositoryGeneric[Schema: MealieModel, Model: SqlAlchemyBase](RepositoryGeneric[Schema, Model]): 1i

469 def __init__( 1i

470 self, 

471 session: Session, 

472 primary_key: str, 

473 sql_model: type[Model], 

474 schema: type[Schema], 

475 *, 

476 group_id: UUID4 | None | NotSet, 

477 ) -> None: 

478 super().__init__(session, primary_key, sql_model, schema) 1iqfpodjbehgklcmna

479 if group_id is NOT_SET: 479 ↛ 480line 479 didn't jump to line 480 because the condition on line 479 was never true1iqfpodjbehgklcmna

480 raise ValueError("group_id must be set") 

481 self._group_id = group_id if group_id else None 1iqfpodjbehgklcmna

482 

483 

484class HouseholdRepositoryGeneric[Schema: MealieModel, Model: SqlAlchemyBase](RepositoryGeneric[Schema, Model]): 1i

485 def __init__( 1i

486 self, 

487 session: Session, 

488 primary_key: str, 

489 sql_model: type[Model], 

490 schema: type[Schema], 

491 *, 

492 group_id: UUID4 | None | NotSet, 

493 household_id: UUID4 | None | NotSet, 

494 ) -> None: 

495 super().__init__(session, primary_key, sql_model, schema) 1iqfpodjbehgklcmna

496 if group_id is NOT_SET: 496 ↛ 497line 496 didn't jump to line 497 because the condition on line 496 was never true1iqfpodjbehgklcmna

497 raise ValueError("group_id must be set") 

498 self._group_id = group_id if group_id else None 1iqfpodjbehgklcmna

499 

500 if household_id is NOT_SET: 500 ↛ 501line 500 didn't jump to line 501 because the condition on line 500 was never true1iqfpodjbehgklcmna

501 raise ValueError("household_id must be set") 

502 self._household_id = household_id if household_id else None 1iqfpodjbehgklcmna