iocanel / quarkus-service-binding-demo

A quick demonstration of quarkus service binding integration

Quarkus and Service Binding Operator

Quarkus and Service Binding Operator

Preparation

Create a kind cluster

kind create cluster

Install OLM

curl -sL https://github.com/operator-framework/operator-lifecycle-manager/releases/download/v0.19.1/install.sh | bash -s v0.19.1

Install SBO

kubectl create -f https://operatorhub.io/install/service-binding-operator.yaml

Install the Postgress Operator

kubectl create -f https://operatorhub.io/install/postgresql.yaml

Create a demo namespace

kubectl create ns demo
kubectl config set-context --current --namespace=demo

Create a postgress cluster

apiVersion: postgres-operator.crunchydata.com/v1beta1
kind: PostgresCluster
metadata:
  name: postgresql
  namespace: demo
spec:
  image: registry.developers.crunchydata.com/crunchydata/crunchy-postgres-ha:centos8-13.4-0
  postgresVersion: 13
  instances:
    - name: instance1
      dataVolumeClaimSpec:
        accessModes:
        - "ReadWriteOnce"
        resources:
          requests:
            storage: 1Gi
  backups:
    pgbackrest:
      image: registry.developers.crunchydata.com/crunchydata/crunchy-pgbackrest:centos8-2.33-2
      repos:
      - name: repo1
        volume:
          volumeClaimSpec:
            accessModes:
            - "ReadWriteOnce"
            resources:
              requests:
                storage: 1Gi
      - name: repo2
        volume:
          volumeClaimSpec:
            accessModes:
            - "ReadWriteOnce"
            resources:
              requests:
                storage: 1Gi
  proxy:
    pgBouncer:
      image: registry.developers.crunchydata.com/crunchydata/crunchy-pgbouncer:centos8-1.15-2

kubectl apply -f ~/pg-cluster.yml

Demo Quarkus ServiceBinding generation

Clone the examples

cd 
mkdir -p ~/demo
git clone [email protected]:quarkusio/quarkus-quickstarts.git ~/demo/quarkus-quickstarts

Pick up a postgres example

cp -r ~/demo/quarkus-quickstarts/hibernate-orm-panache-quickstart ~/demo/hibernate-orm-panache-quickstart
cd ~/demo/hibernate-orm-panache-quickstart

Add kubernetes and service binding extensions

quarkus ext add -B kubernetes kubernetes-service-binding container-image-docker

Set the Image Pull Policy

echo "quarkus.kubernetes.image-pull-policy=IfNotPresent" >> src/main/resources/application.properties

Create the container image

mvn clean install -Dquarkus.container-image.build=true -DskipTests
kind load docker-image iocanel/hibernate-orm-panache-quickstart:1.0.0-SNAPSHOT

Configure Service Binding

cat <<'EOF' >>src/main/resources/application.properties
quarkus.kubernetes-service-binding.services.my-db.api-version=postgres-operator.crunchydata.com/v1beta1
quarkus.kubernetes-service-binding.services.my-db.kind=PostgresCluster
quarkus.kubernetes-service-binding.services.my-db.name=postgresql
EOF

Deploy

mvn clean install -Dquarkus.kubernetes.deploy=true -DskipTests

Verify

kubectl port-forward service/hibernate-orm-panache-quickstart 8080:80

How we can further improve the experience ?

Demo Quarkus Automagic ServiceBinding generation

Overview

• Preview of Quakus automagic binding
• Explain convetions
• Talk about customization

Check the generated resources

(delete-other-windows)
(find-file-other-window "~/demo/hibernate-orm-panache-quickstart/target/kubernetes/kubernetes.yml")
(shrink-window 75 t)

Remove ALL service binding configuration

sed -i '/^quarkus.kubernetes-service-binding/d' src/main/resources/application.properties 

Rebuild the application

mvn clean install -DskipTests