My solution to Reaktor's Developer Trainee, summer 2023 pre-assignment.

The application consists of two parts, server (Back-end) and client (Front-end).

The server has scheduled a task that polls Reaktor's API every 2 seconds. It then determines the violating drones and drones that have violations within 10 minutes. Those violations get pushed to a Redis database with an expiry of 10 minutes. The Redis database will automatically drop the violations if they are not renewed within that 10 minutes.

The server also exposes a WebSocket-based RSocket endpoint that sends the client all saved violations and then sends events about violations added/updated or removed. These events are backed by Redis keyspace notifications that are converted to messages.

The client is a simple SPA that subscribes to the RSocket stream and display the information to the user.

• Gradle: Build tool
• RSocket: Reactive Streams Application protocol
• Redis: In-memory data store

• Vue 3: JavaScript UI Framework
• Vuetify: Material Design Component Framework
• io-ts: Runtime I/O type system

• Kotlin: Programming language
• Spring Boot 3: Spring application framework
• Project Reactor: Reactive programming library for Java
• Google Jib: Java container build tool
• "Distroless" Container Images: Minimal container base images

• Docker Compose: Multi-container orchestration tool
• Nginx Proxy Manager: Easy Nginx-based reverse proxy management

• Java Development Kit (JDK) 17+

Clone the repository to your desired location and enter the folder

git clone https://github.com/ChargedByte/reaktor-summer-2023.git && cd reaktor-summer-2023

On UNIX, you may need to make the Gradle Wrapper script executable

chmod +x gradlew

Build by running the assemble Gradle task

./gradlew assemble

You can find the Jar file at server/build/libs/server-<version>.jar

Build by running the jibDockerBuild or the jibBuildTar

./gradlew jibDockerBuild
# or
./gradlew jibBuildTar

With jibDockerBuild the image is added to docker directory If using jibBuildTar the image file is located at server/build/jib-image.tar and can be loaded with docker load --input jib-image.tar.

Build by running the jibBuildTar with the `` argument

./gradlew jibBuildTar -Djib.container.format="OCI"

You can find the image file located at server/build/jib-image.tar

This project is licensed under the MIT License.