README.md

Inflation Calculator: See How The Value of Money Has Changed 💰

A full stack web app that uses the FRED api to calculate inflation. This involves a React Frontend, a Python backend, and Terraform for IaC to configure the AWS lambda the backend runs on. This can be viewed at: https://davidzirinsky.com/inflation/

Getting a FRED API key 🔑

Before doing anything visit https://fred.stlouisfed.org/docs/api/api_key.html to get an api key.

Create a terraform.tfvars file in the infra folder with the contents:

FRED_API_KEY = "API_KEY_YOU_GET"

Deploy the backend 🛠

Go to the lambda_code_and_deps folder:

cd lambda_code_and_deps/

Lambda dependencies can be tricky, so run this command to install the requests module:

pip install requests -t .

Zip it on up:

zip -r ../infra/lambda.zip ./*

Then go to the infra folder and run this:

cd ../infra
terraform plan
terraform apply

As a debug step you can always to this, the advatages of this command are if networking isn't set up you can still test that the lambda is running. The AWS console is also quite helpful

aws lambda invoke --function-name inflation_lambda response.json

To run backend unit tests run this from the root directory of the project:

pytest

Running the Frontend 🏗️

In the frontend directory, you can do the following:

Run the debub server:

npm start

Run tests:

npm test

Create a production build:

npm run build

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