We want to build a simple API interface prototype

• API_KEY: The API key is hardcoded at the moment, you can generate your own API key. The product API shall parse this key upon request from the header X-API-KEY and reject the rest without the header
• FLASK_PORT: Default 5000, this is the port which the flask application will be bound to

1. Fork this repository
2. Create branch from a previous commit id of master: git checkout -b dev 9a09dc2f77e2551bb764c86f9269543442007606
3. Add the following piece of code on dev and merge the branch to main via pull request, for the sake of health-checking:

@app.route("/health")
def health_check():
    return "", 200

4. Briefly read through the source code and build the docker image. Push this to your docker repository. If you may, please leave us a simple script in hack/ for testing the docker image locally
5. Gain access to the Kubernetes cluster. Deploy your images from docker repository. (Please leave your deployment files in config/)
6. After ensuring the functionality of your application on Kubernetes, please add the healthcheck functionallity using the /health endpoint you have added, to ensure the application is alive
7. To increase scalability of the application, please avoid hard-coding your API_KEY and FLASK_PORT. Store these into secrets and configmaps respectively
8. Deploy gitops tools, e.g., fluxcd or argocd to the cluster, so that whenever you have pushed a new image to docker repository, the latest version of image will be deployed automatically
9. build a docker CI pipeline to build and upload the docker image when there is a git push or merge. You can use any service as you like

In your submission we would like to have your repository structurized like this:

.
|
| --- src/
| --- config/
| --- hack/
| --- Dockerfile
| --- requirements.txt
| --- README.md

src/: Containing scripts

config/: The configuration files, possibly including your Dockerfile, Kubernetes, CI/CD configuration files

hack/: (optional) some random quick-hack one-liners you find useful and convenient to use