AWS lambda

The purpose of this project is to build an API with a reallife usecase and a boilerplate with

• FastAPI and PostgreSQL
• Auto pep8
• CI/CD pipeline
• documenting

Installation

clone the repo and install requirements by

pip install -r requirements.txt

FastAPI

To run the FastAPI

cd app
uvicorn main:app --reload

Default hostname is http://localhost:8000 and as it has inbuild documentation, http://localhost:8000/docs can be used to view/test the API's. main.py is the main app which has API functionalities.

AWS deployment

For deploying it on AWS lambda, create a repo in Github and add the aws secret,access and region in the secrets environment. Create S3 bucket and lambda function and API endpoint and configure the endpoint to created lambda function. edit the main.yml file and input it with your bucket name. This is a one time setup.

After completing the setup. Deploy it to the git repo. It creates a action pipeline which does the rest of the work.

This app is live on https://z3reusmmg9.execute-api.us-east-1.amazonaws.com/dev/docs

Error codes

Error Code	Description
200	OK
409	Conflict
401	Un Authorized
404	Not Found
405	Method Not Allowed
400	Bad Request

Troubleshooting

The psycopg2 library which was installed doesnot work on aws lambda engine. reference >> jkehler/awslambda-psycopg2#47

I have downloaded the custom build and placed it in psycop2-fix folder. The pipeline automatically adds this build to the S3 bucket.