truenas/library/common/templates/lib/container/_volumeMounts.tpl

{{/* Returns volumeMount list */}}
{{/* Call this template:
{{ include "ix.v1.common.lib.container.volumeMount" (dict "rootCtx" $ "objectData" $objectData) }}
rootCtx: The root context of the chart.
objectData: The object data to be used to render the container.
*/}}
{{- define "ix.v1.common.lib.container.volumeMount" -}}
  {{- $rootCtx := .rootCtx -}}
  {{- $objectData := .objectData -}}

  {{- $volMounts := list -}}

  {{- $keys := (list "persistence") -}}

  {{- range $key := $keys -}}
    {{- range $persistenceName, $persistenceValues := (get $rootCtx.Values $key) -}}

      {{/* Initialize from the default values */}}
      {{- $volMount := dict -}}
      {{- $_ := set $volMount "name" $persistenceName -}}
      {{- $_ := set $volMount "key" $key -}}
      {{- $_ := set $volMount "mountPath" ($persistenceValues.mountPath | default "") -}}
      {{- $_ := set $volMount "subPath" ($persistenceValues.subPath | default "") -}}
      {{- $_ := set $volMount "readOnly" ($persistenceValues.readOnly | default false) -}}
      {{- $_ := set $volMount "mountPropagation" ($persistenceValues.mountPropagation | default "") -}}

      {{/* If persistence is enabled... */}}
      {{- if $persistenceValues.enabled -}}
        {{/* If targetSelectAll is set, means all pods/containers */}} {{/* targetSelectAll does not make sense for vct */}}
        {{- if and $persistenceValues.targetSelectAll -}}
          {{- $volMounts = mustAppend $volMounts $volMount -}}

        {{/* Else if selector is defined */}}
        {{- else if $persistenceValues.targetSelector -}}
          {{/* If pod is selected */}}
          {{- if mustHas $objectData.podShortName ($persistenceValues.targetSelector | keys) -}}
            {{- $selectorValues := (get $persistenceValues.targetSelector $objectData.podShortName) -}}
            {{- if not (kindIs "map" $selectorValues) -}}
              {{- fail (printf "%s - Expected <targetSelector.%s> to be a [dict], but got [%s]" (camelcase $key) $objectData.podShortName (kindOf $selectorValues)) -}}
            {{- end -}}

            {{- if not $selectorValues -}}
              {{- fail (printf "%s - Expected non-empty <targetSelector.%s>" (camelcase $key) $objectData.podShortName) -}}
            {{- end -}}

            {{/* If container is selected */}}
            {{- if mustHas $objectData.shortName ($selectorValues | keys) -}}
              {{/* Merge with values that might be set for the specific container */}}
              {{- $volMount = mustMergeOverwrite $volMount (get $selectorValues $objectData.shortName) -}}
              {{- $volMounts = mustAppend $volMounts $volMount -}}
            {{- end -}}
          {{- end -}}

        {{/* Else if not selector, but pod and container is primary */}}
        {{- else if and $objectData.podPrimary $objectData.primary -}}
          {{- $volMounts = mustAppend $volMounts $volMount -}}
        {{- end -}}
      {{- end -}}
    {{- end -}}
  {{- end -}}

  {{- range $volMount := $volMounts -}}
    {{/* Expand values */}}
    {{- $_ := set $volMount "mountPath" (tpl $volMount.mountPath $rootCtx) -}}
    {{- $_ := set $volMount "subPath" (tpl $volMount.subPath $rootCtx) -}}
    {{- $_ := set $volMount "mountPropagation" (tpl $volMount.mountPropagation $rootCtx) -}}

    {{- if not $volMount.mountPath -}}
      {{- fail (printf "%s - Expected non-empty <mountPath>" (camelcase $volMount.key)) -}}
    {{- end -}}

    {{- if not (hasPrefix "/" $volMount.mountPath) -}}
      {{- fail (printf "%s - Expected <mountPath> to start with a forward slash [/]" (camelcase $volMount.key)) -}}
    {{- end -}}

    {{- $propagationTypes := (list "None" "HostToContainer" "Bidirectional") -}}
    {{- if and $volMount.mountPropagation (not (mustHas $volMount.mountPropagation $propagationTypes)) -}}
      {{- fail (printf "%s - Expected <mountPropagation> to be one of [%s], but got [%s]" (camelcase $volMount.key) (join ", " $propagationTypes) $volMount.mountPropagation) -}}
    {{- end -}}

    {{- if not (kindIs "bool" $volMount.readOnly) -}}
      {{- fail (printf "%s - Expected <readOnly> to be [boolean], but got [%s]" (camelcase $volMount.key) (kindOf $volMount.readOnly)) -}}
    {{- end }}
- name: {{ $volMount.name }}
  mountPath: {{ $volMount.mountPath }}
  readOnly: {{ $volMount.readOnly }}
      {{- with $volMount.subPath }}
  subPath: {{ . }}
      {{- end -}}
      {{- with $volMount.mountPropagation }}
  mountPropagation: {{ . }}
      {{- end -}}
  {{- end -}}

{{- end -}}