feat: add pvc creation support

stack/templates/_helpers.tpl

@@ -104,6 +104,15 @@ image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.App
 {{- end }}
 {{- end }}
 
+
+{{- define "service.claimName" -}}
+{{- if .Values.persistence.existingClaim }}
+    {{- printf "%s" (tpl .Values.persistence.existingClaim $) -}}
+{{- else -}}
+    {{- printf "%s" (include "service.fullname" .) -}}
+{{- end -}}
+{{- end -}}
+
 {{/*
 The default values in this chart adds httpGet probes to the deployment.
 Container probes cannot have both httpGet and tcpSocket fields, so we use omit to remove one of them.
@@ -115,3 +124,4 @@ Container probes cannot have both httpGet and tcpSocket fields, so we use omit t
 {{- toYaml (omit . "tcpSocket") }}
 {{- end }}
 {{- end }}
+

stack/templates/deployment.yaml

@@ -71,9 +71,15 @@ spec:
           {{- end }}
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
-          {{- with .Values.volumeMounts }}
+          {{- if or (and .Values.persistence.enabled .Values.persistence.mountPath) .Values.volumeMounts}}
           volumeMounts:
-            {{- toYaml . | nindent 12 }}
+            {{- if and .Values.persistence.enabled .Values.persistence.mountPath) }}
+            - name: data
+              mountPath: {{ .Values.persistence.mountPath }}
+            {{- end }}
+            {{- if .Values.volumeMounts }}
+            {{- toYaml .Values.volumeMounts | nindent 12 }}
+            {{- end }}
           {{- end }}
           {{- include "service.configuration" . | nindent 10}}
           {{- include "service.nonsensitiveEnvVars" (list $global.Values.global .Values) | nindent 10 }}
@@ -96,9 +102,16 @@ spec:
       {{- end }}
       dnsPolicy: {{ .Values.dnsPolicy }}
       restartPolicy: {{ .Values.restartPolicy }}
-      {{- with .Values.volumes }}
+      {{- if or .Values.persistence.enabled .Values.volumes}}
       volumes:
-        {{- toYaml . | nindent 8 }}
+        {{- if .Values.persistence.enabled }}
+        - name: data
+          persistentVolumeClaim:
+            claimName: {{ include "service.claimName" . }}
+        {{- end }}
+        {{- if .Values.volumes }}
+        {{- toYaml .Values.volumes | nindent 8 }}
+        {{- end }}
       {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:

stack/templates/pvc.yaml

@@ -0,0 +1,33 @@
+{{ $global := . }}
+{{ range $serviceName, $serviceValues := .Values.services }}
+  {{- $globalValuesDict := $global.Values.global | toYaml -}}
+  {{- $values := fromYaml $globalValuesDict -}}
+  {{- $values = set $values "name" $serviceName -}}
+  {{- $values := mergeOverwrite $values $serviceValues -}}
+  {{- $service := dict "Chart" $global.Chart "Release" $global.Release "Capabilities" $global.Capabilities "Values" $values -}}
+{{- with $service -}}
+---
+{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) }}
+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: {{ include "service.fullname" . }}
+  labels:
+    {{- include "service.labels" . | nindent 4 }}
+  annotations:
+    {{- include "stack.annotations" $service | nindent 4 }}
+spec:
+  accessModes:
+  {{- range .Values.persistence.accessModes }}
+    - {{ . | quote }}
+  {{- end }}
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size | quote }}
+  {{- if .Values.persistence.storageClass }}
+  storageClassName:  {{ .Values.persistence.storageClass }}
+  {{- end }}
+{{- end }}
+---
+{{- end }}
+{{- end }}

stack/values.yaml

@@ -169,6 +169,14 @@ global:
   env: []
   envFrom: []
 
+  persistence:
+    enabled: false
+    storageClass: ""
+    accessModes:
+      - ReadWriteOnce
+    size: 8Gi
+    existingClaim: ""
+    mountPath: ""
 # Service overrides
 services:
   {}