Helidon Quickstart MP Example
This example implements a simple Hello World REST service using MicroProfile.
Build and run
With JDK8+
mvn package
java -jar target/helidon-quickstart-mp-Dpackage=io.helidon.examples.quickstart.mp.jar
Exercise the application
curl -X GET http://localhost:8080/greet
{"message":"Hello World!"}
curl -X GET http://localhost:8080/greet/Joe
{"message":"Hello Joe!"}
curl -X PUT -H "Content-Type: application/json" -d '{"greeting" : "Hola"}' http://localhost:8080/greet/greeting
curl -X GET http://localhost:8080/greet/Jose
{"message":"Hola Jose!"}
Try health and metrics
curl -s -X GET http://localhost:8080/health
{"outcome":"UP",...
. . .
# Prometheus Format
curl -s -X GET http://localhost:8080/metrics
# TYPE base:gc_g1_young_generation_count gauge
. . .
# JSON Format
curl -H 'Accept: application/json' -X GET http://localhost:8080/metrics
{"base":...
. . .
Build the Docker Image
docker build -t helidon-quickstart-mp-Dpackage=io.helidon.examples.quickstart.mp .
Start the application with Docker
docker run --rm -p 8080:8080 helidon-quickstart-mp-Dpackage=io.helidon.examples.quickstart.mp:latest
Exercise the application as described above
Deploy the application to Kubernetes
kubectl cluster-info # Verify which cluster
kubectl get pods # Verify connectivity to cluster
kubectl create -f app.yaml # Deploy application
kubectl get service helidon-quickstart-mp-Dpackage=io.helidon.examples.quickstart.mp # Verify deployed service