<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hello all, I wanted to get feedback on a proposal for a flask extension to make writing AWS Lambda web applications and services with Flask easier.<div class=""><br class=""></div><div class="">AWS Lambdas are little zip files of code and dependencies that can be executed without any extra infrastructure and can be provided as HTTP services. </div><div class=""><br class=""></div><div class="">I've found that Flask is really great for making even complex lambdas, and can be nearly as easy to maintain and manage as say a Heroku application. Except they run for basically free and you don't have to worry about having hosts to run your application or scaling web servers. I wrote about my setup here <a href="https://spiegelmock.com/2018/09/06/serverless-python-web-applications-with-aws-lambda-and-flask/" class="">https://spiegelmock.com/2018/09/06/serverless-python-web-applications-with-aws-lambda-and-flask/</a></div><div class=""><br class=""></div><div class="">I wrote a basic Flask service hooking into AWS SSM Parameter Store to provide encrypted secrets from AWS to the application, using aws-wsgi (<a href="https://pypi.org/project/aws-lambda-wsgi/" class="">https://pypi.org/project/aws-lambda-wsgi/</a>) to bridge lambda http proxy requests and responses with WSGI, and a small bit of tooling to vendor the application dependencies because they need to be shipped in the zip bundle. Code demonstrating all of this can be found here - <a href="https://github.com/revmischa/qanda/" class="">https://github.com/revmischa/qanda/</a>.</div><div class="">Local running and testing is handled by AWS SAM Local (<a href="https://github.com/awslabs/aws-sam-cli" class="">https://github.com/awslabs/aws-sam-cli</a>). It uses flask-apispec with marshmallow to make serialization and swagger generation effortless.</div><div class=""><br class=""></div><div class="">The project I made with integrating flask and lambda is in my opinion quite smooth and makes writing a serverless Flask application as straightforward as any other app. What I want to do now is find a way to make this pattern reusable for myself and others, but it's not so clear to me how to approach this. I think the combination is a very powerful and useful one but I realized I could use some help in designing something opinionated yet reusable with the goal of making a new Flask-based lambda web service as fast and painless as possible. </div><div class="">I took a crack at beginning to do this with <a href="https://github.com/revmischa/flask-serverless" class="">https://github.com/revmischa/flask-serverless</a> but I'm open to different ideas. What I'd like is provide configuration via AWS SSM or lambda config vars, aws-wsgi bridge, a way to bundle dependencies along with the application, CORS, marshmallow, and apispec all in a neat little starter kit to make it possible to create little flask webserverlesses with minimal setup or copy/pasting.</div><div class=""><br class=""></div><div class="">There do exist some third-party projects like Zappa and Serverless that provide some of these pieces, but I am trying to see how far I can get with Flask and AWS' own tooling.</div><div class=""><br class=""></div><div class="">Thanks for your input!</div><div class="">Mischa</div></body></html>