istio

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{{/*
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Complex logic ahead...
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We have three sets of values, in order of precedence (last wins):
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1. The builtin values.yaml defaults
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2. The profile the user selects
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3. Users input (-f or --set)
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Unfortunately, Helm provides us (1) and (3) together (as .Values), making it hard to insert (2).
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However, we can workaround this by placing all of (1) under a specific key (.Values.defaults).
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We can then merge the profile onto the defaults, then the user settings onto that.
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Finally, we can set all of that under .Values so the chart behaves without awareness.
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*/}}
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{{- $defaults := $.Values.defaults }}
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{{- $_ := unset $.Values "defaults" }}
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{{- $profile := dict }}
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{{- with .Values.profile }}
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{{- with $.Files.Get (printf "files/profile-%s.yaml" .)}}
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{{- $profile = (. | fromYaml) }}
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{{- else }}
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{{ fail (cat "unknown profile" $.Values.profile) }}
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{{- end }}
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{{- end }}
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{{- with .Values.compatibilityVersion }}
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{{- with $.Files.Get (printf "files/profile-compatibility-version-%s.yaml" .) }}
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{{- $ignore := mustMergeOverwrite $profile (. | fromYaml) }}
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{{- else }}
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{{ fail (cat "unknown compatibility version" $.Values.compatibilityVersion) }}
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{{- end }}
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{{- end }}
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{{- if $profile }}
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{{- $a := mustMergeOverwrite $defaults $profile }}
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{{- end }}
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{{- $b := set $ "Values" (mustMergeOverwrite $defaults $.Values) }}
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