WIP: can deploy?

helm/templates/_helpers.tpl

@@ -0,0 +1,76 @@
+{{/*
+match labels
+*/}}
+{{- define "helper.matchLabels" -}}
+app: {{ .component.name }}
+{{- end }}
+
+{{/*
+meta labels
+*/}}
+{{- define "helper.metaLabels" -}}
+app: {{ .component.name }}
+tenant: {{ .values.system }}
+{{- end }}
+
+{{/*
+Node Affinity helper
+*/}}
+{{- define "helper.affinity" -}}
+{{- if .component.affinity -}}
+nodeName: {{ .component.affinity }}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Image name and tag helper
+*/}}
+{{- define "helper.image" -}}
+image: "{{ .component.image.repository }}:{{ .component.image.tag }}"
+{{- end -}}
+
+{{- /* # returns one of the following
+#  - image: current_release:current_tag from lookup
+#  - image: current_release:deploy_tag from image lookup
+
+# if this iteration of the loop has a .Values.deploy override tag
+#   - set $new_image to the override tag
+# else
+#   - set $new_image to the current tag
+*/ -}}
+{{- define "helper.deploy_tag" -}}
+
+  {{- $new_deployment := "" -}}
+  {{- $component := .component.name -}}
+
+  {{- $deployment := (lookup "apps/v1" "Deployment" .release.Namespace $component) | default dict }}
+  {{- if $deployment -}}
+    {{- $targetContainerName := $component -}}
+    {{- $targetContainer := dict -}}
+    {{- range $deployment.spec.template.spec.containers }}
+      {{- if eq .name $targetContainerName }}
+        {{- $targetContainer = . -}}
+      {{- end -}}
+    {{- end -}}
+
+    {{- range $key, $deploy := .values.deploy -}}
+      {{- if eq $key $component -}}
+        {{- $new_deployment = $deploy.tag -}}
+      {{- end -}}
+    {{- end -}}
+
+    {{- if $new_deployment -}}
+image: "{{ .component.image.repository }}:{{ $new_deployment }}"
+    {{- else -}}
+image: {{ $targetContainer.image }}
+    {{- end -}}
+  {{- else -}}
+image: "{{ .component.image.repository }}:{{ .component.image.tag }}"
+  {{- end -}}
+{{- end -}}
+
+
+{{- /* include "helper.var_dump" . */ -}}
+{{- define "helper.var_dump" -}}
+{{- . | mustToPrettyJson | printf "\n%s" | fail }}
+{{- end -}}