Fabrick Coding Challenge Task 2 - Airports and stations

This project is a REST API providing an endpoint to retrieve closest observation stations given an airport and closest airports given an observation station. The project uses the Aviation Weather Center Open API to retrieve the data. The API is a Spring Boot and Java 22 application development project. The project also includes unit testing of the service layer using JUnit and Mockito. The project uses Redis as a cache to reduce the number of requests to the Aviation Weather Center Open API.

Configuration

• Java 22
• Apache Maven 3.9.6
• Redis Stack running on localhost:6379 (default configuration) (Docker is recommended)

Redis docker image configuration

Redis Docker documentation

$ docker run -d --name my-redis-stack -p 6379:6379  redis/redis-stack-server:latest

Test

• In order to test remember to start the Redis Stack server

• a Postman collection is provided at the following path:

  http\Task 2.postman_collection.json

---

Task 2 - Airports and stations

The goal of this task is to code a REST API project that expose the following APIs:

• Given an airport, it will find all the closest observation stations
• Given an observation station, it will find all the closest airports

Here is an example of the APIs we want to expose:

GET /api/fabrick/v1.0/airports/{airportId}/stations?closestBy={value?0.0}
[
   {
    "id": "KAFF",
    "site": "Air Force Academy Arfld",
    "state": "CO",
    "country": "US",
    "latitude": 38.971,
    "longitude": -104.816,
    "elevation:: 2003
  },
  ...
]


GET /api/fabrick/v1.0/stations/{stationId}/airports?closestBy={value?0.0}
[
  {
    "id": "KDEN",
    "name: "DENVER/DENVER_INTL",
    "state": "CO",
    "country": "US",
    "latitude": 39.8617,
    "longitude": -104.6732,
    "elevation": 1656.6
  },
  ...
]

You can rely on the official Aviation Weather Center Open API; have a look at the APIs Airport Info and Station Info

Constraints

• The query parameter closestBy is optional, by default 0.0
• airportId and stationId are the ICAO Airport Codes
• Please note that closestBy should be used as the bounding box modifier, so for example if I send closestBy=1.0 and I have latitude=2.0 and longitude=2.0, the bounding box should be (1.0, 1.0, 3.0, 3.0)

Bonus points

• Implement unit testing using some mocking stub framework
• Implement a local cache or database layer; please note that the database layer should be bootstrapped by the application (we don't want to deal with external systems)