this is a small exercise with very simple logic to be implemented: you are dealing with an AWS lambda (basically a function that runs on a cloud server) that receives an event (you can inspect the payload of the event in models/index.ts) and needs to store the product present in the payload in Dynamo DB, a no-sql database managed by AWS (you can inspect the structure of the db in bin/entrypoint.setup.sh).
there are two steps to clear the exercise, if you finish the first you can try the second one:
- step1: just save the data in the db
- step2: before saving the data, validate some properties of the data and, where needed, return an error. The properties to be validated are:
- the product name should not contain special characters
- the product name should be trimmed
- the product expiring_date should not be in the past
- no two products with the same ean should be present in the db
The idea behind this exercise is that we are not interested in you solving complex algorithmic problems, nor are we interested in you finishing the exercise with the "correct answer", we just want to give you a realistic problem and take a look at how you usually work, so take your time and structure everything in the same way as you would do for a real project.
Given that deploying the lambda on AWS is a tedious process, you are given a dockerized tests environment that you can use to check that your lambda is behaving.
to run the integration tests you can just launch docker-compose up from the project root and a few services should be initialized in order to allow you to work locally.
If you have any questions don't hesitate to ask, this is a pairing session! And most of all, have fun! :)