feat: Build and publish Helm chart in CI

.github/workflows/helm-chart.yaml

@@ -0,0 +1,51 @@
+name: Helm chart
+
+on:
+  pull_request:
+  push:
+    tags:
+    - 'v*'
+
+permissions: {}
+
+jobs:
+  test:
+    name: Test Helm Chart
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+    steps:
+    - uses: actions/checkout@v4
+    - name: Start minikube
+      uses: medyagh/setup-minikube@latest
+    - name: Set up Helm
+      uses: azure/[email protected]
+    - name: Install Helm Chart
+      run: |
+        PR_NUMBER=$(echo ${GITHUB_REF} | awk -F'/' '{print $3}')
+
+        helm dependency update
+
+        helm install test ./helm \
+          --set ref.image.tag=pr-${PR_NUMBER} \
+          --wait
+
+        kubectl get pods
+
+  publish:
+    name: Publish
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+    steps:
+    - uses: actions/checkout@v4
+    - name: Chart | Push
+      uses: appany/[email protected]
+      with:
+        name: ref
+        repository: climate-ref
+        tag: ${{ github.ref_name }}
+        path: helm
+        registry: ghcr.io
+        registry_username: ${{ github.actor }}
+        registry_password: ${{ secrets.GITHUB_TOKEN }}
+        update_dependencies: 'true'

.gitignore

@@ -156,3 +156,6 @@ out
 # Ignore copied LICENCE/NOTICE files
 packages/*/LICENCE
 packages/*/NOTICE
+
+# Helm dependencies
+helm/charts/*

.pre-commit-config.yaml

@@ -18,6 +18,7 @@ repos:
       - id: check-yaml
         args:
         - --unsafe
+        exclude: helm/templates
       - id: debug-statements
       - id: detect-private-key
       - id: end-of-file-fixer

helm/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

helm/Chart.lock

@@ -0,0 +1,6 @@
+dependencies:
+- name: redis-cluster
+  repository: oci://registry-1.docker.io/bitnamicharts
+  version: 11.4.3
+digest: sha256:ba45d88d200a4def7a50e21e7a5fa4177b4c82ca1ef7a28223a0e475476f28ea
+generated: "2025-03-12T17:05:19.517239938-04:00"

helm/Chart.yaml

@@ -0,0 +1,22 @@
+apiVersion: v2
+name: ref
+description: A Helm chart for Kubernetes
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "0.2.0"
+
+dependencies:
+- name: redis-cluster
+  alias: redis
+  version: ~11
+  repository: oci://registry-1.docker.io/bitnamicharts
+  condition: redis.enabled

helm/templates/_helpers.tpl

@@ -0,0 +1,51 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "ref.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "ref.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "ref.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "ref.labels" -}}
+helm.sh/chart: {{ include "ref.chart" . }}
+{{ include "ref.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "ref.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "ref.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

helm/templates/flower/deployment.yaml

@@ -0,0 +1,77 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "ref.fullname" . }}-flower
+  labels:
+    app.kubernetes.io/component: flower
+    {{- include "ref.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.flower.autoscaling.enabled }}
+  replicas: {{ .Values.flower.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/component: flower
+      {{- include "ref.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/flower/secret.yaml") . | sha256sum }}
+      {{- with .Values.flower.podAnnotations }}
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        app.kubernetes.io/component: flower
+        {{- include "ref.labels" . | nindent 8 }}
+        {{- with .Values.flower.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "ref.fullname" . }}-flower
+      {{- with .Values.flower.podSecurityContext }}
+      securityContext:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      containers:
+      - name: flower
+        {{- with .Values.flower.securityContext }}
+        securityContext:
+          {{- toYaml . | nindent 12 }}
+        {{- end }}
+        image: "{{ .Values.flower.image.repository }}:{{ .Values.flower.image.tag }}"
+        imagePullPolicy: {{ .Values.flower.image.pullPolicy }}
+        envFrom:
+        - secretRef:
+            name: {{ include "ref.fullname" . }}-flower
+        readinessProbe:
+          httpGet:
+            path: /healthcheck
+            port: http
+        {{- with .Values.flower.resources }}
+        resources:
+          {{- toYaml . | nindent 12 }}
+        {{- end }}
+        {{- with .Values.flower.volumeMounts }}
+        volumeMounts:
+          {{- toYaml . | nindent 12 }}
+        {{- end }}
+      {{- with .Values.flower.volumes }}
+      volumes:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.flower.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.flower.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.flower.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

helm/templates/flower/secret.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "ref.fullname" . }}-flower
+  labels:
+    app.kubernetes.io/component: flower
+    {{- include "ref.labels" . | nindent 4 }}
+stringData:
+  {{- tpl (toYaml .Values.flower.env) . | nindent 2}}

helm/templates/flower/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "ref.fullname" . }}-flower
+  labels:
+    app.kubernetes.io/component: flower
+    {{- include "ref.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.flower.service.type }}
+  ports:
+    - port: {{ .Values.flower.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app.kubernetes.io/component: flower
+    {{- include "ref.selectorLabels" . | nindent 4 }}

helm/templates/flower/serviceaccount.yaml

@@ -0,0 +1,14 @@
+{{- if .Values.flower.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "ref.fullname" . }}-flower
+  labels:
+    app.kubernetes.io/component: flower
+    {{- include "ref.labels" . | nindent 4 }}
+  {{- with .Values.flower.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+automountServiceAccountToken: {{ .Values.flower.serviceAccount.automount }}
+{{- end }}

helm/templates/ingress.yaml

@@ -0,0 +1,31 @@
+{{- if .Values.ingress.enabled -}}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ include "ref.fullname" . }}
+  labels:
+    {{- include "ref.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- with .Values.ingress.className }}
+  ingressClassName: {{ . }}
+  {{- end }}
+  tls:
+  - hosts:
+    - {{ .Values.ingress.host | quote }}
+    secretName: {{ include "ref.fullname" . }}-ingress-cert
+  rules:
+  - host: {{ .Values.ingress.host | quote }}
+    http:
+      paths:
+      - path: /
+        pathType: ImplementationSpecific
+        backend:
+          service:
+            name: {{ include "ref.fullname" . }}-flower
+            port:
+              number: {{ .Values.flower.service.port }}
+{{- end }}