# Kafka + Quarkus + Docker : Demonstration

[![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://www.apache.org/licenses/LICENSE-2.0)
[![Kotlin](https://img.shields.io/badge/kotlin-1a73e8?logo=kotlin&logoColor=white)](https://kotlinlang.org/)
[![Kafka](https://img.shields.io/badge/kafka-231F20?logo=apache-kafka&logoColor=white)](https://kafka.apache.org/)
[![Quarkus](https://img.shields.io/badge/quarkus-4695EB?logo=quarkus&logoColor=white)](https://quarkus.io/)
[![Docker](https://img.shields.io/badge/docker-2496ED?logo=docker&logoColor=white)](https://www.docker.com/)

A small university project to discover the [Quarkus Framework](https://quarkus.io/) combined with the 
[Kafka library](https://kafka.apache.org/), the whole compatible with [Docker](https://www.docker.com/).

## Run
You can run the project very simply with either [Intellij IDEA](https://www.jetbrains.com/idea/), 
or directly within a terminal.

### Intellij IDEA
Simply clone and load the project into the IDE and in the 
[run configurations](https://www.jetbrains.com/help/idea/run-debug-configuration.html),
choose `compose`.

### Terminal
Alternatively, you can build and run the project manually by using 
[gradle](https://gradle.org/) and launching the application with [docker-compose](https://docs.docker.com/compose/).

```shell
# build the modules
(cd ./applications/consumer/ && ./gradlew build)
(cd ./applications/converter/ && ./gradlew build)
(cd ./applications/producer/ && ./gradlew build)
# start the docker based on the docker-compose.yaml file
docker compose up
```

## Configuration
The configuration can be modified in the [docker-compose.yaml](./docker-compose.yaml) file to fit your needs.

You can find a list for each module of the project containing their individual configuration :
- [producer](./applications/producer/README.md)
- [consumer](./applications/consumer/README.md)
- [converter](./applications/converter/README.md)

## Expectation
The `consumer` container shall print the current temperature at the selected place in Fahrenheit every minute.  
You can also access this value with the REST api at the `http://localhost:8080/v1/temperature` endpoint.  

## References
The project use the [Open-Meteo](https://open-meteo.com/) API to fetch the current temperature at the
given location.