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from abc import ABC, abstractmethod |
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from datetime import datetime |
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import logging |
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from typing import Any, ClassVar, Final |
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from pandas import DataFrame |
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import requests |
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from requests import HTTPError |
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from sqlalchemy import MetaData, Table |
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# future: remove the comment below when stubs for the library below are available |
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import xlrd # type: ignore |
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from src.new_data_processors.database_connection import Database |
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class DataProcessor(ABC): |
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TODAY = datetime.today().date() |
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def __init__(self) -> None: |
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super().__init__() |
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self.logger = logging.getLogger(__name__) |
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self.database = Database() |
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class TableUpdater(DataProcessor, ABC): |
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TABLE_NAME: ClassVar[str] = NotImplemented |
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database_metadata: ClassVar[MetaData] = NotImplemented |
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table: ClassVar[Table] = NotImplemented |
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def __init__(self) -> None: |
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super().__init__() |
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self.DATA_URL: str = NotImplemented |
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self.data: Any = NotImplemented |
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def run(self) -> None: |
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self.process_data() |
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self.store_data() |
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self.logger.info(f"Table `{self.TABLE_NAME}` sucessfully updated!") |
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@abstractmethod |
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def process_data(self) -> None: |
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pass |
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def store_data(self) -> None: |
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self.create_table_if_not_exists() |
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self.add_data() |
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def create_table_if_not_exists(self) -> None: |
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self.table.create( |
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bind=self.database.engine, |
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checkfirst=True, |
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) |
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self.logger.debug(f"Table `{self.TABLE_NAME}` sucessfully created (if needed)!") |
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@abstractmethod |
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def add_data(self) -> None: |
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pass |
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class DataDownloader(TableUpdater, ABC): |
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def __init__(self) -> None: |
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super().__init__() |
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self.data: DataFrame = NotImplemented |
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self._dowload_session = requests.Session() |
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def get_data(self, url: str) -> bytes: |
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try: |
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response = self._dowload_session.get( |
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url=url, |
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headers={ |
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"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) " |
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"AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.2 Safari/605.1.15" |
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}, |
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) |
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response.raise_for_status() |
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self.logger.debug(f"File successfully downloaded from {url}!") |
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return bytes(response.content) |
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except HTTPError: |
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self.logger.critical(f"Failed to download file from {url}!") |
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raise |
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def process_data(self) -> None: |
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self.correct_column_names() |
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self.delete_data() |
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self.correct_data() |
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def correct_column_names(self) -> None: |
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self.rename_columns_manually() |
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@abstractmethod |
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def rename_columns_manually(self) -> None: |
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pass |
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def delete_data(self) -> None: |
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pass |
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def correct_data(self) -> None: |
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self.correct_data_manually() |
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self.correct_boolean_values() |
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@abstractmethod |
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def correct_data_manually(self) -> None: |
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pass |
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@abstractmethod |
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def correct_boolean_values(self) -> None: |
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pass |
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class UICTableUpdater(DataDownloader, ABC): |
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def __init__(self) -> None: |
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super().__init__() |
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self.DATA_BASE_URL: Final = "https://uic.org/spip.php?action=telecharger&arg=" |
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self._data_to_process: bytes = NotImplemented |
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def rename_columns_manually(self) -> None: |
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pass |
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def correct_data_manually(self) -> None: |
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pass |
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def correct_boolean_values(self) -> None: |
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pass |
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gy-mate /
kalauz
