Ruby Serverless Workshop 29 May 2021

Repository for the purpose of the Ruby Serverless workshop (details here)

Inside the project there is also a short presentation.

The application was developed during a workshop lasting several hours. It's a scalable back-end application made using Serverless Framework with Ruby. The app allows you to place pizza orders as well as preview all orders.

• Orders are stored in the DynamoDB NoSQL database.
• For computing the logic, we've used AWS Lambda.
• For the API part, we've used AWS API Gateway.
• For the purpose of assembling all the elements, we've used Serverless Framework.
• For bundling Ruby gems, we've used a serverless plugin https://www.npmjs.com/package/serverless-ruby-layer

Project Setup

Make sure, that you have your AWS credentials setup in ~/.aws/credentials file. It should look like:

[personal]
aws_access_key_id = access
aws_secret_access_key = secret
region = eu-central-1

• Ruby version is 2.7
• default region is eu-central-1
• AWS profile is personal

Installation

• npm ci

Deploying to AWS

• AWS_PROFILE=personal sls deploy
• For deploying single function changes (and avoid waiting for deploying the whole project again and again) it's worth using the command AWS_PROFILE=personal sls deploy -f function-name -v

Deleting stack

sls remove

Testing with Postman

• after the deployment, simply grab endpoints generated by Serverless Framework, and copy them to the postman, when you can create a collection for the purposes of the E2E tests.