[GENERIC] Add a generic chart to deploy simple containers

charts/generic/Chart.yaml

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+apiVersion: v2
+name: generic
+type: application
+version: 0.0.1-devel

charts/generic/templates/_helpers.tpl

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+{{- define "custom.labels" -}}
+app: {{ .name }}
+version: {{ .image.tag }}
+{{- end -}}

charts/generic/templates/_stack.tpl

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+{{- define "custom.stack" -}}
+{{- if .Values.components }}
+{{- range $key, $component := .Values.components }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ $component.name }}
+  namespace: {{ $.Release.Namespace | quote }}
+  labels:
+{{ include "custom.labels" $component | indent 4 }}
+spec:
+  replicas: {{ $component.replicas }}
+  {{- if hasKey $component.strategy "type" }}
+  strategy:
+    type: {{ $component.strategy.type }}
+  {{ end -}}
+  selector:
+    matchLabels:
+{{ include "custom.labels" $component | indent 6 }}
+  template:
+    metadata:
+      labels:
+{{ include "custom.labels" $component | indent 8 }}
+    spec:
+{{- if $component.securityContext }}
+      securityContext:
+{{ toYaml $component.securityContext | indent 8 }}
+{{- end }}
+      {{ if $component.volumes -}}
+      volumes:
+{{ toYaml $component.volumes | indent 8 }}
+      {{ end -}}
+{{- if $component.initContainers }}
+      initContainers:
+{{ toYaml $component.initContainers | indent 8 }}
+{{- end }}
+      containers:
+        - name: {{ $component.name }}
+          {{- if $component.env }}
+          env:
+{{ toYaml $component.env | indent 12 }}
+          {{ end -}}
+          {{- if $component.resources -}}
+          resources:
+{{ toYaml $component.resources | indent 12 }}
+          {{- end -}}
+          {{- if $component.volumeMounts }}
+          volumeMounts:
+{{ toYaml $component.volumeMounts | indent 12 }}
+          {{ end -}}
+          imagePullPolicy: {{ $component.image.pullPolicy }}
+          image: {{ $component.image.repository }}:{{ $component.image.tag }}
+          {{- with $component.ports }}
+          ports:
+            {{- range $key, $port := $component.ports }}
+            - containerPort: {{ $port.port }}
+            {{- end }}
+          {{- end }}
+{{- if $component.sidecars }}
+{{ toYaml $component.sidecars | indent 8 }}
+{{ end }}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ $component.name }}
+  namespace: {{ $.Release.Namespace | quote }}
+  labels:
+{{ include "custom.labels" $component | indent 4 }}
+spec:
+  selector:
+{{ include "custom.labels" $component | indent 4 }}
+  ports:
+    {{- range $key, $port := $component.ports }}
+    - protocol: TCP
+      port: {{ $port.port }}
+      targetPort: {{ $port.port }}
+    {{ end }}
+---
+{{- range $key, $port := $component.ports }}
+{{ if $port.ingress }}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  {{- if $port.ingress.annotations }}
+  annotations:
+{{ toYaml $port.ingress.annotations | indent 4 }}
+  {{- end }}
+  name: {{ $component.name }}-{{ $port.port }}
+  namespace: {{ $.Release.Namespace | quote }}
+  labels:
+{{ include "custom.labels" $component | indent 4 }}
+spec:
+  ingressClassName: {{ $port.ingress.ingressClass | default "nginx" }}
+  {{- range $key2, $port2 := $component.ports }}
+  rules:
+  {{- if $port2.ingress }}
+  - host: {{ $port2.ingress.host }}
+    http:
+      paths:
+        - pathType: Prefix
+          path: {{ $port2.ingress.path | default "/" }}
+          backend:
+            service:
+              name: {{ $component.name }}
+              port:
+                number: {{ $port2.port }}
+  {{- end -}}
+  {{- end -}}
+  {{- range $key2, $port2 := $component.ports }}
+  tls:
+  {{- if $port2.ingress.tls }}
+  - hosts: 
+      - {{ $port2.ingress.host }}
+    secretName: {{ $component.name }}-{{ $port2.port }}
+  {{ end }}
+  {{ end }}
+{{ end }}
+{{ end }}
+{{- end -}}
+{{- end -}}
+{{- end -}}

charts/generic/templates/stack.yaml

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+{{ include "custom.stack" . }}

charts/generic/values.yaml

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+components:
+  - name: languagetool
+    env:
+      - name: toto
+        value: tutu
+    replicas: 3
+    securityContext:
+      runAsUser: 1000
+      fsGroup: 1000
+    sidecars:
+      - name: goofys
+        image: goofys
+    initContainers:
+      - name: ubuntu
+        image: ubuntu
+    strategy:
+      type: Recreate
+    volumes:
+      - name: config-vol
+        configMap:
+          name: log-config
+          items:
+            - key: log_level
+              path: log_leve
+    volumeMounts:
+      - name: config-vol
+        mountPath: /etc/config
+    resources:
+      requests:
+        memory: "64Mi"
+        cpu: "250m"
+      limits:
+        memory: "128Mi"
+    ports:
+      - port: 8010
+        ingress:
+          annotations:
+            cert-manager.io/cluster-issuer: demo
+          host: toto.exemple.com
+          tls: true
+    image:
+      repository: erikvl87/languagetool
+      tag: latest
+      pullPolicy: IfNotPresent