From 879bd06259088d07fa78ae19d6b1f4101c67849a Mon Sep 17 00:00:00 2001
From: Mathieu Benoit <mathieu.benoit@humanitec.com>
Date: Wed, 3 Jul 2024 23:12:57 +0000
Subject: [PATCH] score-k8s for node-service

---
 templates/node-service/content/.gitignore     |  4 +-
 templates/node-service/content/Makefile       | 57 ++++++++++++++++++-
 templates/node-service/content/README.md      | 33 +++++++++--
 .../content/scripts/setup-kind-cluster.sh     | 35 ++++++++++++
 templates/podinfo-example/content/Makefile    |  9 ++-
 templates/podinfo-example/content/README.md   | 33 ++++++++++-
 6 files changed, 162 insertions(+), 9 deletions(-)
 create mode 100755 templates/node-service/content/scripts/setup-kind-cluster.sh

diff --git a/templates/node-service/content/.gitignore b/templates/node-service/content/.gitignore
index 446a26c..f5757b0 100644
--- a/templates/node-service/content/.gitignore
+++ b/templates/node-service/content/.gitignore
@@ -1,3 +1,5 @@
 node_modules/
 .score-compose/
-compose.yaml
\ No newline at end of file
+compose.yaml
+.score-k8s/
+manifests.yaml
\ No newline at end of file
diff --git a/templates/node-service/content/Makefile b/templates/node-service/content/Makefile
index 8beb9af..c7850f7 100644
--- a/templates/node-service/content/Makefile
+++ b/templates/node-service/content/Makefile
@@ -38,4 +38,59 @@ compose-test: compose-up
 ## Delete the containers running via compose down.
 .PHONY: compose-down
 compose-down:
-	docker compose down -v --remove-orphans || true
\ No newline at end of file
+	docker compose down -v --remove-orphans || true
+
+.score-k8s/state.yaml:
+	score-k8s init \
+		--no-sample
+
+manifests.yaml: score.yaml .score-k8s/state.yaml Makefile
+	score-k8s generate score.yaml \
+		--image ${CONTAINER_IMAGE}
+
+## Create a local Kind cluster.
+.PHONY: kind-create-cluster
+kind-create-cluster:
+	./scripts/setup-kind-cluster.sh
+
+## Load the local container image in the current Kind cluster.
+.PHONY: kind-load-image
+kind-load-image:
+	kind load docker-image ${CONTAINER_IMAGE}
+
+NAMESPACE ?= default
+## Generate a manifests.yaml file from the score spec, deploy it to Kubernetes and wait for the Pods to be Ready.
+.PHONY: k8s-up
+k8s-up: manifests.yaml
+	kubectl apply \
+		-f manifests.yaml \
+		-n ${NAMESPACE}
+	kubectl wait deployments/${WORKLOAD_NAME} \
+		-n ${NAMESPACE} \
+		--for condition=Available \
+		--timeout=90s
+	kubectl wait pods \
+		-n ${NAMESPACE} \
+		-l app.kubernetes.io/name=${WORKLOAD_NAME} \
+		--for condition=Ready \
+		--timeout=90s
+	sleep 5
+
+## Expose the container deployed in Kubernetes via port-forward.
+.PHONY: k8s-test
+k8s-test: k8s-up
+	curl $$(score-k8s resources get-outputs dns.default#${WORKLOAD_NAME}.dns --format '{{ .host }}')
+
+## Delete the deployment of the local container in Kubernetes.
+.PHONY: k8s-down
+k8s-down:
+	kubectl delete \
+		-f manifests.yaml \
+		-n ${NAMESPACE}
+
+## Deploy the workload to Humanitec.
+.PHONY: htc-up
+htc-up:
+	humctl score deploy \
+		-f score.yaml \
+		--wait
\ No newline at end of file
diff --git a/templates/node-service/content/README.md b/templates/node-service/content/README.md
index de190e9..a46fcd3 100644
--- a/templates/node-service/content/README.md
+++ b/templates/node-service/content/README.md
@@ -1,11 +1,36 @@
 # Score - ${{ values.name | capitalize }}
 
-A simple score project deploying a hello world app.
+The workload is a simple containerized NodeJS app talking to a MySQL database.
+
+[Score](https://score.dev/) is used to deploy the workload locally with `score-compose` in Docker, with `score-k8s` in Kubernetes or with `humctl` in Humanitec. See [Makefile](Makefile) for more details.
 
 ## Deploying
 
-[Score](https://score.dev/) is used to deploy the workload to humanitec.
+Locally:
+```bash
+make compose-up
+
+make compose-test
+```
+
+In Kubernetes (`Kind`):
+```bash
+make kind-create-cluster
+
+make kind-load-image
+
+make k8s-up
+
+make k8s-test
+```
+
+In Humanitec:
+```bash
+humctl login
 
-## The Workload
+humctl config set org FIXME
+humctl config set app ${{ values.name }}
+humctl config set app development
 
-The workload is a simple nodejs app which is dockerized.
+make htc-up
+```
\ No newline at end of file
diff --git a/templates/node-service/content/scripts/setup-kind-cluster.sh b/templates/node-service/content/scripts/setup-kind-cluster.sh
new file mode 100755
index 0000000..7e9bb72
--- /dev/null
+++ b/templates/node-service/content/scripts/setup-kind-cluster.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+set -o errexit
+
+cat <<EOF | kind create cluster --config=-
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+nodes:
+- role: control-plane
+  extraPortMappings:
+  - containerPort: 31000
+    hostPort: 80
+    protocol: TCP
+EOF
+
+kubectl apply \
+    -f https://github.com/kubernetes-sigs/gateway-api/releases/download/v1.1.0/standard-install.yaml
+
+helm install ngf oci://ghcr.io/nginxinc/charts/nginx-gateway-fabric \
+    --create-namespace \
+    -n nginx-gateway \
+    --set service.type=NodePort \
+    --set-json 'service.ports=[{"port":80,"nodePort":31000}]'
+
+kubectl apply -f - <<EOF
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: default
+spec:
+  gatewayClassName: nginx
+  listeners:
+  - name: http
+    port: 80
+    protocol: HTTP
+EOF
\ No newline at end of file
diff --git a/templates/podinfo-example/content/Makefile b/templates/podinfo-example/content/Makefile
index 65e59cd..7fc258f 100644
--- a/templates/podinfo-example/content/Makefile
+++ b/templates/podinfo-example/content/Makefile
@@ -84,4 +84,11 @@ k8s-test: k8s-up
 k8s-down:
 	kubectl delete \
 		-f manifests.yaml \
-		-n ${NAMESPACE}
\ No newline at end of file
+		-n ${NAMESPACE}
+
+## Deploy the workload to Humanitec.
+.PHONY: htc-up
+htc-up:
+	humctl score deploy \
+		-f score.yaml \
+		--wait
\ No newline at end of file
diff --git a/templates/podinfo-example/content/README.md b/templates/podinfo-example/content/README.md
index ba77f47..f35c855 100644
--- a/templates/podinfo-example/content/README.md
+++ b/templates/podinfo-example/content/README.md
@@ -1,7 +1,36 @@
 # Podinfo - ${{ values.name | capitalize }}
 
-A simple score project deploying podinfo.
+The workload is the `podinfo` container image.
+
+[Score](https://score.dev/) is used to deploy the workload locally with `score-compose` in Docker, with `score-k8s` in Kubernetes or with `humctl` in Humanitec. See [Makefile](Makefile) for more details.
 
 ## Deploying
 
-[Score](https://score.dev/) is used to deploy the workload to humanitec.
+Locally:
+```bash
+make compose-up
+
+make compose-test
+```
+
+In Kubernetes (`Kind`):
+```bash
+make kind-create-cluster
+
+make kind-load-image
+
+make k8s-up
+
+make k8s-test
+```
+
+In Humanitec:
+```bash
+humctl login
+
+humctl config set org FIXME
+humctl config set app ${{ values.name }}
+humctl config set app development
+
+make htc-up
+```