Questions & Answers API

Rust-based API for a StackOverflow-like app.

This API has two primary features:

• Question creation, retrieval & deletion
• Answer creation, retrieval & deletion

Persistence layer

For this purpose, we will PostgreSQL to store the info about Questions and Answers. The tables are:

Question

Name	Type	Description
question_uuid	UUID	Generated identifier unique to each question
title	VARCHAR(255)	Title of the question
description	VARCHAR(255)	Description of the question
created_at	TIMESTAMP	Creation timestamp of the question

Answer

Name	Type	Description
answer_uuid	UUID	Generated identifier unique to each answer
question_uuid	UUID	Generated identifier unique to each question
content	VARCHAR(255)	Content of the answer
created_at	TIMESTAMP	Creation timestamp of the answer

As you can see, this is a very simple 1:N relationship between Questions and Answers. One question might have N answers potentially. If a question is deleted, all the related answeres will be deleted as well.

Testing

In order to test the, you need to run a docker container with a Postgres instances and execute the migration process to create the expected tables:

docker run --name stack-overflow-db -e POSTGRES_PASSWORD=postgrespw -p 55008:5432 -d postgres

sqlx migrate run

NOTE: If you don't have sql installed already, you can install execute this cargo command:

cargo install sqlx-cli   

Use the following cURL operations to add and retrieve some data

Create question

curl --request POST \
  --url http://localhost:8000/question \
  --header 'Accept: application/json' \
  --data '{
	"title": "Title",
	"description": "Description"
}'

Get questions

curl --request GET \
  --url http://localhost:8000/questions \
  --header 'Accept: application/json'

Delete question

curl --request DELETE \
  --url http://localhost:8000/question \
  --header 'Accept: application/json' \
  --data '{
	"question_uuid": "[UUID of a created question]"
}'

Create answer

curl --request POST \
  --url http://localhost:8000/answer \
  --header 'Accept: application/json' \
  --data '{
	"question_uuid": "[UUID of a created question]",
	"content": "Content"
}'

Get answers

curl --request GET \
  --url http://localhost:8000/answers \
  --header 'Accept: application/json' \
  --data '{
	"question_uuid": "[UUID of a created question]"
}'

Delete answer

curl --request DELETE \
  --url http://localhost:8000/answer \
  --header 'Accept: application/json' \
  --data '{
	"answer_uuid": "[UUID of a created answer]"
}'