horizen-fastapi-template 0.0.0.1.dev1

A reusable FastAPI application factory

FastAPI Template

A reusable FastAPI application factory packaged for quick reuse. The package exposes a single public function, create_app, which returns a fully configured FastAPI instance with logging, metrics, documentation, and health-check routes ready to go.

🚀 Quick Start

Installation

pip install horizen-fastapi-template

Usage

Create a new file (for example main.py) and bootstrap your API:

from fastapi_template import create_app

app = create_app()

Run the application with Uvicorn:

uvicorn main:app --reload

🔧 Configuration

Application behaviour is configured through environment variables using pydantic-settings. Create a .env file alongside your application if you need to override defaults:

PORT=8000
LOG_LEVEL=INFO
APP_NAME=MyFastAPIApp
PROCESS_TIME_HEADER=X-Process-Time
SWAGGER_STATIC_FILES=/static/swagger
SWAGGER_OPENAPI_JSON_URL=/openapi.json
LOG_REQUEST_EXCLUDE_PATHS=["/health", "/metrics", "/static", "/docs", "/redoc", "/openapi.json", "/.well-known"]

The same settings object is used internally to configure logging, documentation, and middleware. Although the implementation lives under fastapi_template._internal, those modules are considered private and may change without notice.

🧩 Features

• Logging – Structured logging powered by loguru with an optional request logging middleware.
• Monitoring – Prometheus-compatible metrics endpoint and uptime background task ready to register in your observability stack.
• Documentation – Swagger UI and ReDoc served through customisable static assets bundled with the package.
• Middleware – Request timing, exception handling, and request logging middleware that can be toggled through configuration flags.
• Utilities – Helper clients for HTTP APIs, FTP servers, and Kubernetes interactions, plus shared Pydantic models for error responses.

📁 Project Structure

FastApiTemplate/
├── app/
│   └── main.py               # Example application entrypoint
├── package/
│   └── fastapi_template/
│       ├── __init__.py       # Public package exposing `create_app`
│       ├── application.py    # Application factory implementation
│       ├── _internal/        # Private framework modules
│       └── static/           # Bundled static assets for Swagger UI
├── pyproject.toml            # Packaging metadata
└── README.md

🛠️ Development

Install dependencies in editable mode when working on the package:

pip install -e .

Run the example application from the repository root:

python -m app.main

📄 License

Distributed under the terms of the MIT license. See the LICENSE file for details.