shuttle-cobra 0.1.3

Shuttle inspired framework for Python

Shuttle Cobra 🐍

Shuttle Cobra is a framework that empowers you to effortlessly deploy your Python applications and their required AWS infrastructure with a delightful, Python-native development experience.

Define your application and its cloud resources directly in Python code using type hints and annotations, and let the Shuttle CLI handle the provisioning, building, and deployment to AWS.

✨ Features

• Python-Native Infrastructure: Define AWS resources like S3 buckets, PostgreSQL databases, and scheduled tasks using standard Python syntax.
• Declarative Deployment: The Shuttle CLI understands your Python code and provisions/updates your infrastructure on AWS to match your definitions.
• Local Development: Run your Shuttle applications locally, seamlessly connecting to your provisioned remote resources or local emulations.
• Simplified Workflow: Focus on your application logic, not complex infrastructure-as-code configurations.
• Powered by uv: Leverages uv for fast, robust dependency management.

🚀 Getting Started

Follow these steps to set up your environment and deploy your first Shuttle Cobra application.

Prerequisites

1. AWS Account and Credentials: Ensure you have an AWS account and your credentials configured. You can authenticate with AWS using one of the following methods:
   • SSO Enabled: Use aws configure sso for AWS Single Sign-On.
   • IAM User Account: Use aws configure for standard IAM user credentials.
   • Temporary IAM Credentials: Set the following environment variables:
     • AWS_ACCESS_KEY_ID
     • AWS_SECRET_ACCESS_KEY
     • AWS_SESSION_TOKEN
   • Other Options: IAM role metadata and OIDC federation are also supported.
2. uv installed: uv is recommended for managing Python environments and dependencies. Install it via pip:

   pip install uv
   

Installation

Once uv is installed, you can create a virtual environment and install the Shuttle CLI:

# Create a new virtual environment
uv venv

# Activate the virtual environment (Linux/macOS)
source .venv/bin/activate

# Activate the virtual environment (Windows PowerShell)
.venv\Scripts\Activate.ps1

# Install Shuttle CLI and its dependencies
uv init
uv add shuttle-cobra

Invoking Shuttle Commands

Once Shuttle is installed and your virtual environment is activated (using source .venv/bin/activate or .venv\Scripts\Activate.ps1), you can invoke all Shuttle commands directly using shuttle.

If you are outside your virtual environment (i.e., you haven't activated it), you can invoke all Shuttle commands using uv run -m shuttle.

Throughout this guide, examples will primarily use the shuttle command, assuming your virtual environment is activated. We will also provide the uv run -m shuttle equivalent where relevant.

Create Your First Project

Start a new Shuttle project by defining a main.py file inside your virtual environment.

Navigate into your project directory (or create a new one for your main.py file). Open main.py (or your chosen application file) and define your application.

Here's an example of a simple scheduled task that uses an S3 bucket:

from typing import Annotated
import shuttle_runtime
import shuttle_task
from shuttle_aws.s3 import Bucket, BucketOptions

@shuttle_task.cron(schedule="0 * * * ? *") # Runs every hour
async def run(
    bucket: Annotated[
        Bucket,
        BucketOptions(bucket_name="my-unique-shuttle-bucket", policies=[]),
    ]
):
    print(f"Hello from Shuttle! Bucket name: {bucket.options.bucket_name}")
    # Use bucket.get_client() for boto3 S3 client operations

if __name__ == "__main__":
    shuttle_runtime.main(main)

Deploy Your Application

Once your AWS credentials are configured and your application defined, deploy it with a single command:

shuttle deploy
# or
uv run -m shuttle deploy

The CLI will show you a plan of the infrastructure changes and prompt for confirmation before provisioning resources on AWS.

View Logs

To see the output from your deployed application, use the logs command:

shuttle logs
# or
uv run -m shuttle logs

Run Locally

Develop and test your application locally while connecting to your deployed cloud resources:

shuttle run
# or
uv run -m shuttle run

This will execute your run function (or equivalent entrypoint) in your local environment, using the remote AWS resources provisioned by Shuttle.

Destroy Resources

When you no longer need your deployed application and its associated infrastructure, you can destroy it:

shuttle destroy
# or
uv run -m shuttle destroy

🛠️ Development

To set up the development environment for Shuttle Cobra:

1. Clone the repository:

   git clone https://github.com/shuttle/shuttle-cobra.git # Replace with actual repo URL
   cd shuttle-cobra
   

2. Create and activate a virtual environment:

   uv venv
   source .venv/bin/activate
   

Running Tests

Ensure your LOCALSTACK_AUTH_TOKEN environment variable is set for integration tests (if applicable).

# Run all tests
uv run pytest --capture=no shuttle*/test*.py

# Or, for more granular control, activate venv and run pytest directly
source .venv/bin/activate
pytest --capture=no shuttle*/test*.py

Contributing

We welcome contributions! Please see our CONTRIBUTING.md for more details on how to get involved.

❤️ Support & Community

• Documentation: Visit the official Shuttle Python documentation for in-depth guides and API references.
• Community: Join our community forum or Discord channel (links to be provided).
• Issue Tracker: Report bugs or request features on our GitHub Issues.

📄 License

This project is licensed under the Apache v2 License - see the LICENSE file for details.