openstack-helm-infra/helm-toolkit/templates/snippets/_kubernetes_metadata_labels.tpl
Marlin Cremers 4340e272d7 feat(helm-toolkit): allow setting extra labels on pods
Currently it isn't possible to set extra labels on pods that use
the labels snippet. This means users are required to fork the helm
repository for OpenStack services to add custom labels. Use cases
for this are for example injecting Istio sidecars.

This change introduces the ability to set one set of labels on all
resources that use the labels snippet.

Change-Id: Iefc8465300f434b89c07b18ba75260fee0a05ef5
2021-09-27 18:44:47 +02:00

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{{/*
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}
{{/*
abstract: |
Renders a set of standardised labels
values: |
release_group: null
pod:
labels:
default:
label1.example.com: value
bar:
label2.example.com: bar
usage: |
{{ tuple . "foo" "bar" | include "helm-toolkit.snippets.kubernetes_metadata_labels" }}
return: |
release_group: RELEASE-NAME
application: foo
component: bar
label1.example.com: value
label2.example.com: bar
*/}}
{{- define "helm-toolkit.snippets.kubernetes_metadata_labels" -}}
{{- $envAll := index . 0 -}}
{{- $application := index . 1 -}}
{{- $component := index . 2 -}}
release_group: {{ $envAll.Values.release_group | default $envAll.Release.Name }}
application: {{ $application }}
component: {{ $component }}
{{- if ($envAll.Values.pod).labels }}
{{- if hasKey $envAll.Values.pod.labels $component }}
{{ index $envAll.Values.pod "labels" $component | toYaml }}
{{- end -}}
{{- if hasKey $envAll.Values.pod.labels "default" }}
{{ $envAll.Values.pod.labels.default | toYaml }}
{{- end -}}
{{- end -}}
{{- end -}}