[common] Add common chart from KaH

charts/common/templates/lib/chart/_annotations.tpl

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+{{/* Common annotations shared across objects */}}
+{{- define "common.annotations" -}}
+  {{- with .Values.global.annotations }}
+    {{- range $k, $v := . }}
+      {{- $name := $k }}
+      {{- $value := tpl $v $ }}
+{{ $name }}: {{ quote $value }}
+    {{- end }}
+  {{- end }}
+{{- end -}}
+
+{{/* Determine the Pod annotations used in the controller */}}
+{{- define "common.podAnnotations" -}}
+  {{- if .Values.podAnnotations -}}
+    {{- tpl (toYaml .Values.podAnnotations) . | nindent 0 -}}
+  {{- end -}}
+
+  {{- $configMapsFound := false -}}
+  {{- range $name, $configmap := .Values.configmap -}}
+    {{- if $configmap.enabled -}}
+      {{- $configMapsFound = true -}}
+    {{- end -}}
+  {{- end -}}
+  {{- if $configMapsFound -}}
+    {{- printf "checksum/config: %v" (include ("common.configmap") . | sha256sum) | nindent 0 -}}
+  {{- end -}}
+{{- end -}}

charts/common/templates/lib/chart/_capabilities.tpl

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+{{/* Allow KubeVersion to be overridden. */}}
+{{- define "common.capabilities.ingress.kubeVersion" -}}
+  {{- default .Capabilities.KubeVersion.Version .Values.kubeVersionOverride -}}
+{{- end -}}
+
+{{/* Return the appropriate apiVersion for Ingress objects */}}
+{{- define "common.capabilities.ingress.apiVersion" -}}
+  {{- print "networking.k8s.io/v1" -}}
+  {{- if semverCompare "<1.19" (include "common.capabilities.ingress.kubeVersion" .) -}}
+    {{- print "beta1" -}}
+  {{- end -}}
+{{- end -}}
+
+{{/* Check Ingress stability */}}
+{{- define "common.capabilities.ingress.isStable" -}}
+  {{- if eq (include "common.capabilities.ingress.apiVersion" .) "networking.k8s.io/v1" -}}
+    {{- true -}}
+  {{- end -}}
+{{- end -}}

charts/common/templates/lib/chart/_labels.tpl

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+{{/* Common labels shared across objects */}}
+{{- define "common.labels" -}}
+helm.sh/chart: {{ include "common.names.chart" . }}
+{{ include "common.labels.selectorLabels" . }}
+  {{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+  {{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+  {{- with .Values.global.labels }}
+    {{- range $k, $v := . }}
+      {{- $name := $k }}
+      {{- $value := tpl $v $ }}
+{{ $name }}: {{ quote $value }}
+    {{- end }}
+  {{- end }}
+{{- end -}}
+
+{{/* Selector labels shared across objects */}}
+{{- define "common.labels.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "common.names.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}

charts/common/templates/lib/chart/_names.tpl

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+{{/* Expand the name of the chart */}}
+{{- define "common.names.name" -}}
+  {{- $globalNameOverride := "" -}}
+  {{- if hasKey .Values "global" -}}
+    {{- $globalNameOverride = (default $globalNameOverride .Values.global.nameOverride) -}}
+  {{- end -}}
+  {{- default .Chart.Name (default .Values.nameOverride $globalNameOverride) | 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 "common.names.fullname" -}}
+  {{- $name := include "common.names.name" . -}}
+  {{- $globalFullNameOverride := "" -}}
+  {{- if hasKey .Values "global" -}}
+    {{- $globalFullNameOverride = (default $globalFullNameOverride .Values.global.fullnameOverride) -}}
+  {{- end -}}
+  {{- if or .Values.fullnameOverride $globalFullNameOverride -}}
+    {{- $name = default .Values.fullnameOverride $globalFullNameOverride -}}
+  {{- else -}}
+    {{- if contains $name .Release.Name -}}
+      {{- $name = .Release.Name -}}
+    {{- else -}}
+      {{- $name = printf "%s-%s" .Release.Name $name -}}
+    {{- end -}}
+  {{- end -}}
+  {{- trunc 63 $name | trimSuffix "-" -}}
+{{- end -}}
+
+{{/* Create chart name and version as used by the chart label */}}
+{{- define "common.names.chart" -}}
+  {{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/* Create the name of the ServiceAccount to use */}}
+{{- define "common.names.serviceAccountName" -}}
+  {{- if .Values.serviceAccount.create -}}
+    {{- default (include "common.names.fullname" .) .Values.serviceAccount.name -}}
+  {{- else -}}
+    {{- default "default" .Values.serviceAccount.name -}}
+  {{- end -}}
+{{- end -}}
+
+{{/* Return the properly cased version of the controller type */}}
+{{- define "common.names.controllerType" -}}
+  {{- if eq .Values.controller.type "deployment" -}}
+    {{- print "Deployment" -}}
+  {{- else if eq .Values.controller.type "daemonset" -}}
+    {{- print "DaemonSet" -}}
+  {{- else if eq .Values.controller.type "statefulset"  -}}
+    {{- print "StatefulSet" -}}
+  {{- else -}}
+    {{- fail (printf "Not a valid controller.type (%s)" .Values.controller.type) -}}
+  {{- end -}}
+{{- end -}}

charts/common/templates/lib/chart/_values.tpl

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+{{/* Merge the local chart values and the common chart defaults */}}
+{{- define "common.values.setup" -}}
+  {{- if .Values.common -}}
+    {{- $defaultValues := deepCopy .Values.common -}}
+    {{- $userValues := deepCopy (omit .Values "common") -}}
+    {{- $mergedValues := mustMergeOverwrite $defaultValues $userValues -}}
+    {{- $_ := set . "Values" (deepCopy $mergedValues) -}}
+  {{- end -}}
+{{- end -}}