This is a pre-assignment for a trainee application to the company Reaktor.

Full description of the assigment can be found here: Birdnest

The service should request for live drone location information and if an aerospace violation is detected, query for the drone owner information and publish it on website. Only data regarding owners of offending drones should be queried and published. The web page should update its contents regularly without user interaction.

The user interface is not important and the page should only show the list of the owners of the offending drones.

• The application is implemented in Python, using the Flask framework.
• The application will be published on Fly.io platform.
• There will be a scheduled method, which polls the drone detector in given intervals regardless if the front end has been used or not

The application doesn't use any persistent storage. All information is lost during the application shut down.

You should have Python 3 already installed in your system. I assume Linux or similar operating system is in use.

Clone the project from GitHub:

$ git clone https://github.com/jatufin/birdnest

Go to the project folder and build the Flask environment:

$ python3 -m venv venv
$ source venv/bin/activate

You might need to install dependecies:

(venv) $ pip install Flask
(venv) $ pip install wheel
(venv) $ pip install Flask-APScheduler
(venv) $ pip install requests

Start the application from within the active environment:

(venv) $ flask --app src/app.py run

The front end of the application can be opened in your browser: localhost:5000

There is also a ready-to-build Docker configuration for easy deployment.

The container can be build with command:

$ docker build . -t birdnest

And launched:

$ docker run birdnest

There exists fly.toml configuration file in the project root. The application name should be modified to be unique:

app = "jatufin-birdnest"

If one jas installe flyctl and registered to the service, the application can be launched to Fly.io by following command:

flyctl launch

Python variables containing configuration information can be found in the config.py file.

No environmental variables are used.

Unit tests can be found in the src/tests directory. They can be executed from the project root directory with following command:

$ python3 -m unittest

• Store bird nests in a list inside the Drones object. This way multiple nests with different size No Fly Zones could be surveyed.
• Current tests are not comprehensive and should be expanded
• Flask Blueprint should be used to more elegantly manage source tree (avoid imports from src module)
• Pilot cache should have Time To Live values. Now entries reside in the cache until shutdown.