Assignment task

Task

1. Design a database schema to record customer’s information:
   • First name
   • Last name
   • Email address
   • Password
   • Date of birth
   • 8 alphanumeric policy code
   • Genetic result
2. Design a RESTful service so that customers may
   • Login and logout
   • Retrieve personal data
   • Retrieve genetic result
3. Design a Web frontend application to serve the content provided by the RESTful service

Services

I decided to implement this system using SOA, cause of such benefits:

• Easy scalability: you can run as many instance of each service as you wish.
• Flexibility: any service may be easily refactored, plugged/unplugged, turned on or off.
• You can implement different parts of the system using different technology stack (you can pick right tools for specific problems)

1. Auth application

Central auth application, that stores customer's data and access tokens. Based on Python3.6, Django, DRF and allauth. Provides simple REST API for login/logout/registration/password resetting and retrieving the information about the authenticated user.

2. Auth database

PostgreSQL database backend for auth application. For the demo purposes and "one-line startup without dependencies", PostgreSQL stored in container without volume mounting.

3. Nginx proxy

Front nginx. Entry point for all incoming traffic, also serves front-end application (that's not right).

4. Genetic result worker

Not implemented yet.

Worker that calculates/process users data and returns a genetic result (puts it into queue in RabbitMQ). Unfortunately, still not implemented, so fake data generated using migrations.

5. Genetic result API

Application, that provides REST API for getting user's genetic result and that responsible for genetic results storage.

6. Front-end application

Angular-based application that allows user to login/logout/sign up and get his genetic result.

Installation

All these components are implemented as docker containers. There is single docker-compose.yml that allow you to run the whole components together using only one command. Ofcourse, it's a bad idea to use such approach in production. For more information about what should be changed – read TODO.md

$ git clone https://github.com/kaduev13/technical-challenge.git
$ cd technical-challenge
$ docker-compose up --force-recreate --build

After that command execution, just open your browser and go to localhost:8991.

Testing

Unfortunatelly, no tests at all – implementation took a lot of time – much more than I expected.