Add helm chart for easy deployment

.chartreleaser.yaml

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+release-name-template: "helm-v{{ .Version }}"

.github/workflows/build-helm.yaml

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+name: Build Charts
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - helm/**
+  pull_request:
+    branches: [ master ]
+    paths:
+      - helm/**
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.4.2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+
+      - name: Set up chart-testing
+        uses: helm/chart-testing-action@v2.0.1
+        with:
+          version: v3.3.0
+
+      - name: Run chart-testing (list-changed)
+        id: list-changed
+        run: |
+          changed=$(ct list-changed --config helm/ct.yaml)
+          if [[ -n "$changed" ]]; then
+            echo "::set-output name=changed::true"
+          fi
+      - name: Run chart-testing (lint)
+        run: ct lint --config helm/ct.yaml --check-version-increment=false
+
+      - name: Create kind cluster
+        uses: helm/kind-action@v1.1.0
+        if: steps.list-changed.outputs.changed == 'true'
+
+      - name: Run chart-testing (install)
+        run: ct install --config helm/ct.yaml

.github/workflows/build.yaml

@@ -8,8 +8,15 @@ on:
       - LICENSE
       - .gitignore
       - .editorconfig
+      - helm/**
   pull_request:
     branches: [ master ]
+    paths-ignore:
+      - README.md
+      - LICENSE
+      - .gitignore
+      - .editorconfig
+      - helm/**
 
 jobs:
   lint:

.github/workflows/release-helm.yaml

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+name: Release Charts
+
+on:
+  push:
+    paths:
+      - version.yaml
+
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+      - name: Install Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.4.2
+
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@v1.2.0
+        with:
+          charts_dir: helm
+          config: .chartreleaser.yaml
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

helm/hcloud-pricing-exporter/.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/hcloud-pricing-exporter/Chart.yaml

@@ -0,0 +1,8 @@
+apiVersion: v2
+name: hcloud-pricing-exporter
+description: A prometheus exporter for the current pricing and costs of your HCloud account
+
+type: application
+
+version: 0.1.1-r1
+appVersion: 0.1.1

helm/hcloud-pricing-exporter/templates/_helpers.tpl

@@ -0,0 +1,51 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "hcloud-pricing-exporter.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 "hcloud-pricing-exporter.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 "hcloud-pricing-exporter.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "hcloud-pricing-exporter.labels" -}}
+helm.sh/chart: {{ include "hcloud-pricing-exporter.chart" . }}
+{{ include "hcloud-pricing-exporter.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "hcloud-pricing-exporter.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "hcloud-pricing-exporter.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

helm/hcloud-pricing-exporter/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "hcloud-pricing-exporter.fullname" . }}
+  labels:
+    {{- include "hcloud-pricing-exporter.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "hcloud-pricing-exporter.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "hcloud-pricing-exporter.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            - name: HCLOUD_TOKEN
+              {{- if .Values.secret.create }}
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "hcloud-pricing-exporter.fullname" . }}
+                  key: token
+              {{- else }}
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Values.secret.reference.name }}
+                  key: {{ .Values.secret.reference.key }}
+              {{- end }}
+          ports:
+            - name: http
+              containerPort: 8080
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

helm/hcloud-pricing-exporter/templates/ingress.yaml

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+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "hcloud-pricing-exporter.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+{{- if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1beta1
+{{- else -}}
+apiVersion: extensions/v1beta1
+{{- end }}
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "hcloud-pricing-exporter.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if .Values.ingress.tls }}
+  tls:
+    {{- range .Values.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    {{- range .Values.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+          {{- range .paths }}
+          - path: {{ .path }}
+            backend:
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+          {{- end }}
+    {{- end }}
+  {{- end }}

helm/hcloud-pricing-exporter/templates/secret.yaml

@@ -0,0 +1,9 @@
+{{- if .Values.secret.create }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "hcloud-pricing-exporter.fullname" . }}
+type: Opaque
+data:
+  token: {{ required "An token to access the HCloud API is required" .Values.secret.token | b64enc }}
+{{- end }}

helm/hcloud-pricing-exporter/templates/service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "hcloud-pricing-exporter.fullname" . }}
+  labels:
+    {{- include "hcloud-pricing-exporter.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "hcloud-pricing-exporter.selectorLabels" . | nindent 4 }}

helm/hcloud-pricing-exporter/templates/servicemonitor.yaml

@@ -0,0 +1,27 @@
+{{ if .Values.serviceMonitor.create }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "hcloud-pricing-exporter.fullname" . }}
+  labels:
+    {{- include "hcloud-pricing-exporter.labels" . | nindent 4 }}
+    {{- if .Values.serviceMonitor.labels }}
+    {{- toYaml .Values.serviceMonitor.labels | nindent 4 }}
+    {{- end }}
+spec:
+  endpoints:
+    - honorLabels: true
+      targetPort: http
+      {{- with .Values.serviceMonitor.interval }}
+      interval: {{ . }}
+      {{- end }}
+      {{- with .Values.serviceMonitor.scrapeTimeout }}
+      scrapeTimeout: {{ . }}
+      {{- end }}
+  namespaceSelector:
+    matchNames:
+      - "{{ .Release.Namespace }}"
+  selector:
+    matchLabels:
+      {{- include "hcloud-pricing-exporter.selectorLabels" . | nindent 6 }}
+{{- end }}

helm/hcloud-pricing-exporter/values.yaml

@@ -0,0 +1,44 @@
+replicaCount: 1
+
+image:
+  repository: jangraefen/hcloud-pricing-exporter
+  pullPolicy: IfNotPresent
+  tag: ""
+
+imagePullSecrets: [ ]
+nameOverride: ""
+fullnameOverride: ""
+
+podAnnotations: { }
+
+service:
+  type: ClusterIP
+  port: 8080
+
+ingress:
+  enabled: false
+  annotations: { }
+  hosts:
+    - host: chart-example.local
+  tls: [ ]
+
+secret:
+  create: true
+  token:
+  reference:
+    name:
+    key:
+
+serviceMonitor:
+  create: false
+  interval:
+  labels:
+  scrapeTimeout:
+
+resources: { }
+
+nodeSelector: { }
+
+tolerations: [ ]
+
+affinity: { }

version.yaml

@@ -0,0 +1,2 @@
+version: 0.1.1
+helmRevision: r1