scala3-quarkus-quickstart

This project is quickstart using Scala 3 and Quarkus, the Supersonic Subatomic Java Framework.

If you want to learn more about Quarkus, please visit its website: https://quarkus.io/.

To learn more about Scala and new in Scala 3, check-out https://docs.scala-lang.org/scala3/new-in-scala3.html.

Development tools recommendation

To start developing in Quarkus/Scala 3, I recommend the following:

Coursier to manage Scala tools and JVM install
GraalVM 21 installed thru Coursier
Quarkus CLI
VSCode as IDE
The following VSCode Extensions
- Metals by ScalaMeta
- Scala Syntax
- Scaladex search
- Quarkus Tools

The repository also comes with a Github Action that runs tests on PRs and pushes.

Running the application in dev mode

Run your application in dev mode that enables live coding using:

./mvnw compile quarkus:dev
# or using the quarkus-cli (https://quarkus.io/get-started/)
quarkus dev

NOTE: Quarkus now ships with a Dev UI, which is available in dev mode only at http://localhost:8080/q/dev/.

To run tests, use:

# using quarkus-cli which will run in continuous testing
quarkus test

Packaging and running the application

The application can be packaged using:

./mvnw package

It produces the quarkus-run.jar file in the target/quarkus-app/ directory. Be aware that it’s not an über-jar as the dependencies are copied into the target/quarkus-app/lib/ directory.

The application is now runnable using java -jar target/quarkus-app/quarkus-run.jar.

If you want to build an über-jar, execute the following command:

./mvnw package -Dquarkus.package.type=uber-jar

The application, packaged as an über-jar, is now runnable using java -jar target/*-runner.jar.

Creating a native executable

You can create a native executable using:

./mvnw package -Dnative

Or, if you don't have GraalVM installed, you can run the native executable build in a container using:

./mvnw package -Dnative -Dquarkus.native.container-build=true

You can then execute your native executable with: ./target/code-with-quarkus-1.0.0-SNAPSHOT-runner

If you want to learn more about building native executables, please consult https://quarkus.io/guides/maven-tooling.

Provided Code

RESTEasy Reactive

Easily start your Reactive RESTful Web Services

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riccardomerolla / scala3-quarkus-quickstart