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a49e0b2037
* First cut at adding enc type factory * Finalized enc type factory * Adding unit test * PyLinting * Adding license * Apply suggestions from code review Co-authored-by: Jesse Yang <jesse.yang@airbnb.com> * Moving things from enc -> encrypt * CI commit * One more fix * Tweaking config name * Fixing broken test * Fixing broken test again Co-authored-by: Jesse Yang <jesse.yang@airbnb.com>
67 lines
2.3 KiB
Python
67 lines
2.3 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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from abc import ABC, abstractmethod
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from typing import Any, Dict, List, Optional
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from flask import Flask
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from sqlalchemy import TypeDecorator
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from sqlalchemy_utils import EncryptedType
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class AbstractEncryptedFieldAdapter(ABC):
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@abstractmethod
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def create(
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self,
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app_config: Optional[Dict[str, Any]],
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*args: List[Any],
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**kwargs: Optional[Dict[str, Any]]
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) -> TypeDecorator:
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pass
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class SQLAlchemyUtilsAdapter(AbstractEncryptedFieldAdapter):
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def create(
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self,
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app_config: Optional[Dict[str, Any]],
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*args: List[Any],
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**kwargs: Optional[Dict[str, Any]]
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) -> TypeDecorator:
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if app_config:
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return EncryptedType(*args, app_config["SECRET_KEY"], **kwargs)
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raise Exception("Missing app_config kwarg")
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class EncryptedFieldFactory:
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def __init__(self) -> None:
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self._concrete_type_adapter: Optional[AbstractEncryptedFieldAdapter] = None
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self._config: Optional[Dict[str, Any]] = None
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def init_app(self, app: Flask) -> None:
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self._config = app.config
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self._concrete_type_adapter = self._config[
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"SQLALCHEMY_ENCRYPTED_FIELD_TYPE_ADAPTER"
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]()
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def create(
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self, *args: List[Any], **kwargs: Optional[Dict[str, Any]]
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) -> TypeDecorator:
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if self._concrete_type_adapter:
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return self._concrete_type_adapter.create(self._config, *args, **kwargs)
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raise Exception("App not initialized yet. Please call init_app first")
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