payment gateway

Environment

This project needs:

• Python 3.9, because AWS lambda requires specific Python
• (AWS SAM CLI)[https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/what-is-sam.html], to manage infrastructure
• access to AWS account

The best way to manage the environment and dependencies is to use (Conda)[https://docs.conda.io/en/latest/miniconda.html].

Once you have conda installed you need to create a virtual environment:

conda create -n payment-gateway python=3.9

once this is done you can activate your environment:

conda activate payment-gateway

and install AWS SAM (we are using pip, there is something wrong with conda package):

pip install aws-sam-cli

If you want to see if SAM template works, you can run sync of lambda code with AWS or run local API instance.

Deploy lambda locally for testing

sam local start-api

Deploy lambda in AWS for testing

REMEMBER: you need to configure access to AWS, https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html

sam sync --stack-name sam-app --watch

This will deploy lambda and redeploy it every time you change lambda code. HTTP URL lambda will be printed out in the command output:

Key                 HelloWorldApi                                                               
Description         API Gateway endpoint URL for Prod stage for Hello World function            
Value               https://jfeln3n803.execute-api.eu-north-1.amazonaws.com/Prod/hello/ 

Enter URL in a browser to see if it works.