# Config Manager
### tbi-config-manager (0.0.3)
A flexible configuration management library for Python with multiple provider support (Environment, GCP Secret Manager, etc.) and easy extensibility.
# Features
- **Multiple Provider Support**
- Built-in Environment Variables (.env) support
- Built-in GCP Secret Manager integration
- Configurable provider priority
- Easy to extend with custom providers
- **Type Safety & Flexibility**
- Strong typing support
- Optional value handling
- Default value support
- Attribute-style access
- **Developer Friendly**
- Simple API
- Clear error messages
- Comprehensive logging
- Easy to test
# Installation
```bash
$ pip install tbi-config-manager
```
### Prerequisites
- Python >=3.8
- GCP credentials (optional, GCP project Service Account, for Secret Manager support)
# How to Use
Basic usage example:
```python
from config_manager import ConfigManager, Provider
# Default to environment variables only
config = ConfigManager()
value = config.get("DATABASE_URL")
# With specific .env file
config = ConfigManager(env_file=".env.dev")
# ENV has higher priority than GCP.
config = ConfigManager(
providers=[Provider.ENV, Provider.GCP],
project_id="your-project-id",
credentials_path="path/to/credentials.json",
secret_prefix="APP_"
)
# GCP has higher priority than ENV.
config = ConfigManager(
providers=[Provider.GCP, Provider.ENV]
...
)
# Only use GCP Secret Manager
config = ConfigManager(
providers=[Provider.GCP]
...
)
DATABASE_URL = config.get("DATABASE_URL")
...
```
In your `config.py`:
```python
from config_manager import ConfigManager, Provider
config = ConfigManager(
providers=[Provider.ENV, Provider.GCP],
project_id="config-manager",
credentials_path="path/to/credentials.json",
secret_prefix="PROD_"
)
# Access configs as attributes
DATABASE_URL = config.get("DATABASE_URL")
API_KEY = config.get("API_KEY")
ENV = config.get("ENV", default="dev")
PROVIDER = config.get("PROVIDER", "GCP") # Optional parameter with default
```
# How to Contribute
## Setup
```bash
git clone https://github.com/TaiwanBigdata/config-manager.git
cd readgen
python -m venv env
source env/bin/activate # Linux/Mac
pip install -e .
```
## Implementing Custom Providers
The config-manager library is designed for extensibility. Here's how to implement your own configuration provider:
### 1. Add New Provider Type
Add your provider type to the enum
`src/config_manager/typing.py`
```python
from enum import Enum
class Provider(Enum):
"""Available configuration provider types"""
ENV = "env" # Environment variables
GCP = "gcp" # Google Cloud Secret Manager
REDIS = "redis" # Your new provider
```
### 2. Implement Provider Class
Create your provider implementation under providers directory
`src/config_manager/providers/redis.py`
```python
from config_manager import ConfigProvider
from typing import Optional
# Inherit from the base abstract class ConfigProvider
class RedisProvider(ConfigProvider):
def __init__(self, redis_url: str, prefix: str = ""):
self.redis_url = redis_url
self.prefix = prefix
self._client = redis.Redis.from_url(redis_url)
# Required interface implementations
def get(self, key: str) -> Optional[str]: ...
def has(self, key: str) -> bool: ...
def reload(self) -> None: ...
@property
def name(self) -> str: ...
```
### 3. Register Provider
Register your provider in factory
`src/config_manager/providers/factory.py`
```python
class ProviderFactory:
...
# Register providers here
ProviderFactory.register(Provider.ENV, EnvProvider)
ProviderFactory.register(Provider.GCP, GCPProvider)
```
### 4. Export Provider
Export your provider in the module level
`src/config_manager/providers/__init__.py`
```python
from .redis import RedisProvider
__all__ = [
...
"RedisProvider",
]
```
Export your provider in the package level
`src/config_manager/__init__.py`
```python
from .providers import ProviderFactory, EnvProvider, GCPProvider, RedisProvider
__all__ = [
...
"RedisProvider",
]
```
### Examples of Potential Custom Providers
- AWS Secrets Manager
- Azure Key Vault
- HashiCorp Vault
- Redis
- MongoDB
- Local JSON/YAML files
- Remote HTTP endpoints
### Each provider needs to implement the ConfigProvider interface and handle:
- Configuration retrieval
- Key existence checking
- Reloading mechanism
- Error handling
# Dependencies
### Core
- python-dotenv>=1.0.0
- google-cloud-secret-manager>=2.0.0
- typing-extensions>=4.0.0
# License
This project is licensed under the MIT License.
# Project Structure
```
config-manager/
├── .gitignore
├── LICENSE
├── README.md
├── pyproject.toml
├── readgen.toml # ReadGen - Readme Generator CLI tool configuration file
├── requirements.txt
└── src/
└── config_manager/ # Register providers at the project level
├── config.py # Configuration manager that orchestrates multiple providers to retrieve config values
├── exceptions.py
├── providers/ # Register providers at the model level
│ ├── base.py # Abstract base class for configuration providers
│ ├── composite.py # Implements composite pattern to aggregate multiple config providers in priority order
│ ├── env.py # Local environment configuration for the `.env` provider
│ ├── factory.py # Register and initialize providers in this file
│ └── gcp.py # The Provider class
├── typing.py # Type definitions and enums
└── utils/
├── cache.py
└── logger.py
```
---
> This document was automatically generated by [ReadGen](https://github.com/TaiwanBigdata/readgen).
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"description": "# Config Manager\n\n### tbi-config-manager (0.0.3)\nA flexible configuration management library for Python with multiple provider support (Environment, GCP Secret Manager, etc.) and easy extensibility.\n\n\n# Features\n\n- **Multiple Provider Support**\n - Built-in Environment Variables (.env) support\n - Built-in GCP Secret Manager integration\n - Configurable provider priority\n - Easy to extend with custom providers\n\n- **Type Safety & Flexibility**\n - Strong typing support\n - Optional value handling\n - Default value support\n - Attribute-style access\n\n- **Developer Friendly**\n - Simple API\n - Clear error messages\n - Comprehensive logging\n - Easy to test\n\n\n# Installation\n\n```bash\n$ pip install tbi-config-manager\n```\n### Prerequisites\n- Python >=3.8\n- GCP credentials (optional, GCP project Service Account, for Secret Manager support)\n\n\n# How to Use\n\nBasic usage example:\n```python\nfrom config_manager import ConfigManager, Provider\n\n# Default to environment variables only\nconfig = ConfigManager()\nvalue = config.get(\"DATABASE_URL\")\n\n# With specific .env file\nconfig = ConfigManager(env_file=\".env.dev\")\n\n# ENV has higher priority than GCP.\nconfig = ConfigManager(\n providers=[Provider.ENV, Provider.GCP], \n project_id=\"your-project-id\",\n credentials_path=\"path/to/credentials.json\",\n secret_prefix=\"APP_\"\n)\n\n# GCP has higher priority than ENV.\nconfig = ConfigManager(\n providers=[Provider.GCP, Provider.ENV] \n ...\n)\n\n# Only use GCP Secret Manager\nconfig = ConfigManager(\n providers=[Provider.GCP] \n ...\n)\n\nDATABASE_URL = config.get(\"DATABASE_URL\")\n...\n```\n\nIn your `config.py`:\n```python\nfrom config_manager import ConfigManager, Provider\n\nconfig = ConfigManager(\n providers=[Provider.ENV, Provider.GCP], \n project_id=\"config-manager\",\n credentials_path=\"path/to/credentials.json\",\n secret_prefix=\"PROD_\"\n)\n\n# Access configs as attributes\nDATABASE_URL = config.get(\"DATABASE_URL\")\nAPI_KEY = config.get(\"API_KEY\")\nENV = config.get(\"ENV\", default=\"dev\")\nPROVIDER = config.get(\"PROVIDER\", \"GCP\") # Optional parameter with default\n```\n\n\n# How to Contribute\n\n## Setup\n```bash\ngit clone https://github.com/TaiwanBigdata/config-manager.git\ncd readgen\npython -m venv env\nsource env/bin/activate # Linux/Mac\npip install -e .\n```\n\n## Implementing Custom Providers\n\nThe config-manager library is designed for extensibility. Here's how to implement your own configuration provider:\n\n### 1. Add New Provider Type\nAdd your provider type to the enum\n`src/config_manager/typing.py`\n```python\nfrom enum import Enum\n\nclass Provider(Enum):\n \"\"\"Available configuration provider types\"\"\"\n ENV = \"env\" # Environment variables\n GCP = \"gcp\" # Google Cloud Secret Manager\n REDIS = \"redis\" # Your new provider\n```\n\n### 2. Implement Provider Class\nCreate your provider implementation under providers directory \n`src/config_manager/providers/redis.py`\n\n```python\nfrom config_manager import ConfigProvider\nfrom typing import Optional\n\n# Inherit from the base abstract class ConfigProvider\nclass RedisProvider(ConfigProvider):\n def __init__(self, redis_url: str, prefix: str = \"\"):\n self.redis_url = redis_url\n self.prefix = prefix\n self._client = redis.Redis.from_url(redis_url)\n \n # Required interface implementations\n def get(self, key: str) -> Optional[str]: ...\n def has(self, key: str) -> bool: ...\n def reload(self) -> None: ...\n @property\n def name(self) -> str: ...\n```\n### 3. Register Provider\nRegister your provider in factory\n`src/config_manager/providers/factory.py`\n\n```python\nclass ProviderFactory:\n ...\n\n# Register providers here\nProviderFactory.register(Provider.ENV, EnvProvider)\nProviderFactory.register(Provider.GCP, GCPProvider)\n```\n\n### 4. 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