Dropwizard Scala Example

Docker: docker run -p 8080:8080 -p 8081:8081 -it jecklgamis/dropwizard-scala-example:main

This is an example Dropwizard app using Scala.

What's In The Box?

• JDK 21
• Dropwizard 5.x
• Scala 2.13
• Kubernetes deployment

Running The App

Ensure you have Java 21 or later.

mvn clean package
java -jar target/dropwizard-scala-example.jar

Running The App Using Docker

Ensure you have a working Docker environment.

make up

Endpoints

curl -v http://localhost:8080/
curl -v http://localhost:8081/

Deploying To Kubernetes

Ensure:

• You have helmcommand installed (Mac OS: brew install helm)
• You can deploy to a Kubernetes cluster that can access Docker Hub

Build and install Helm chart:

cd deployment/k8s/helm
make install 

This creates:

• a service account
• a pod running on port 8080
• a service listening on port 80
• a deployment
• an ingress

To connect to the app locally, create a tunnel to the service:

kubectl port-forward service/dropwizard-scala-example 8080:80
curl http://localhost:8080

If you have ingress controller installed in your cluster, you can connect using

curl -k -v -H "Host:dropwizard-scala-example.local" https://<your-ingress-load-balancer-dns>

Contributing

Please raise issue or pull request! Thanks!