Proof of concept app done as part of a recruiting process. Runs over Spring Boot. Maven required.

Go to the root of the project and run

./mvnw package && java -jar target/spring-boot-docker-0.0.1-SNAPSHOT.jar

App should start and listen on port 8080. The relevant endpoint is /order/tracking/

If performing a GET request against it, a list in form of JSON will be returned with the data of all the current orders.

When performing a POST, the body of the request has to contain a JSON with the order tracking data. e.g.

{"orderTrackings": [
	{
		"orderId": 230688716,
		"trackingStatusId": 2,
		"changeStatusDate": "2019-01-27T07:18:23.108+00:00"
	},
	{
		"orderId": 953688716,
		"trackingStatusId": 2,
		"changeStatusDate": "2019-01-27T07:18:23.108+00:00"
	},
	{
		"orderId": 189688716,
		"trackingStatusId": 2,
		"changeStatusDate": "2019-01-27T07:18:23.108+00:00"
	}
]}

In my case I have leveraged curl to test:

• GET

curl localhost:8080/order/tracking/

• POST (trackingData.json file included in the repo)

curl -X POST -H "Content-Type: application/json" -d @trackingData.json localhost:8080/order/tracking/

• Proper error handling (Invalid requests (5xx errors), 4xx errors)
• Sanitize content (JSON) receceived in the endpoint to detect invalid fields
• Store history of changes for a given Order Id
• Check dates when updating an order (update date > order last modification date)
• Log Invalid requests
• Log when an invalid statr transition tried to be done