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Show HN: Run a Python Flask HTTP Server in AWS Lambda (w/Poetry) (github.com)

3 points by cnuss ↗ HN
Scaffoldly allows you to run any HTTP server inside AWS Lambda. It requires no code changes to your existing server and a simple configuration in the project's pyproject.toml. Deployments can be done locally or in GitHub Actions.

In this example, we're running a Flask server in AWS Lambda, and the scaffoldly toolchain handles packaging, deployment, and routing of AWS Lambda HTTP requests.

4 comments

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billconan
it uses the port 5000, can lambda open any port?
cnuss
Yup! Change the `handler` and `start` command:

``` handler = "localhost:5000" ... start = "poetry run flask --app flask_poetry run -p 12345" ```

billconan
is this port publicly accessible? or the traffic is forwarded by lambda's interface?
cnuss
It's not publicly accessible, per-se..., there's a reverse proxy I've written

1. There's a Function URL that then creates a Lambda HTTP Event

2. There's a reverse proxy in the container that converts the Lambda HTTP Event back into a HTTP Request

3. Then the HTTP Respose is transformed back into a Lambda HTTP Event Response

@billconan if you'd like, join my Discord and I'd be happy dive into details and/or provide more docs: https://scaffoldly.dev/community