201-quarkus-live-update

Quarkus Live Update with Tilt

A demo to show how sync local Quarkus sources with pod running in kubernetes and use the quarkus:dev mode to hot reload the changes.

Important

This Dockerfile is used for development purposes, in order to have a production image, you may consider to use Native builds

Pre-requiste

• Have tilt properly installed and a kubernetes environment. Ensure that you have KUBECONFIG environment var or is in the proper kube context.
• Have Docker or Buildah properly installed.

Running the demo

Clone the demo sources locally:

git clone https://github.com/tilt-dev/tilt-example-java.git
cd tilt-example-java/201-quarkus-live-update/

If it's being used docker as builder, start the environment with:

tilt up

If it's being used buildah as builder, start the environment with:

tilt up -f Tiltfile.buildah

The command creates the following resources:

• a kubernetes deployment called quarkus-sync-demo
• a persistence volume claim called m2-cache to cache the maven artifacts for faster builds

Check the stats of the application:

kubectl get pods -w ##(1)

1. A successful start will have quarkus-sync-demo in Running status

Note	You can terminate the kubectl get pods -w using the command CTRL+C

Lets see the sync in action, open a new terminal and navigate to $PROJECT_HOME. Run the following command:

./poll.sh ##(1)

1. this will keep calling the kubernetes service once in every 5 seconds

Without any change you should be seeing response as hello getting printed every 5 seconds.

You can now make changes to the sources e.g change hello in GreetingResource.java to namaste

After few seconds you will see your polling window sending the new response namaste

Cleanup

tilt down -f <Tiltfile>