rshatch/flask-lambda

Python 3.6+ module to make Flask compatible with AWS Lambda

flask-lambda-support

Write Flask applications that support being run in in AWS Lambda behind API Gateway.

This project was forked from: https://github.com/techjacker/flask-lambda

Improvements:

• Expose original input event from AWS on Flask's request object
• Production-grade logging

Requirements

• Python 3.6+
• Flask 0.10+

Installation

pip install flask-lambda-support

Usage

Here is an example of what a Flask app using this library would look like:

from flask_lambda import FlaskLambda

app = FlaskLambda(__name__)


@app.route('/foo', methods=['GET', 'POST'])
def foo():
   data = {
       'form': request.form.copy(),
       'args': request.args.copy(),
       'json': request.json
   }
   return (
       json.dumps(data, indent=4, sort_keys=True),
       200,
       {'Content-Type': 'application/json'}
   )


if __name__ == '__main__':
    app.run(debug=True)

You can access the original input event and context on the Flask request context:

from flask import request

assert request.aws_event['input']['httpMethod'] == 'POST'
assert request.aws_context.get_remaining_time_in_millis() == 10_000

Development

You can publish a new version to PyPI with the following commands:

python3 setup.py sdist bdist_wheel
twine upload PATH_TO_WHL_FILE

[Refer to the official documentation on Python packaging for more information](https://packaging.python.org/tutorials/packaging-projects)