feat(keycloakx): add commonLabels to apply labels across all chart resources

Adds a commonLabels value so a user-defined label set can be applied
once and propagated to every resource this chart renders, including
the StatefulSet's pods, without touching selector fields.

Signed-off-by: Ram Bhajan Mishra <rbm897@gmail.com>

Author: rbm897

charts/keycloakx/README.md

@@ -68,6 +68,7 @@ The following table lists the configurable parameters of the Keycloak-X chart an
 | `nameOverride`                                | Optionally override the name                                                                                                                                                                                                                                                      | `""`                                                                                                                                                                                    |
 | `namespaceOverride`                           | Optionally override the namespace for all resources. Useful for umbrella charts that deploy multiple aliased keycloak instances each into their own namespace.                                                                                                                     | `""`                                                                                                                                                                                    |
 | `replicas`                                    | The number of replicas to create                                                                                                                                                                                                                                                  | `1`                                                                                                                                                                                     |
+| `commonLabels`                                | Additional labels applied to every resource in this chart, and on the StatefulSet's pods                                                                                                                                                                                          | `{}`                                                                                                                                                                                    |
 | `image.repository`                            | The Keycloak image repository                                                                                                                                                                                                                                                     | `quay.io/keycloak/keycloak`                                                                                                                                                             |
 | `image.tag`                                   | Overrides the Keycloak image tag whose default is the chart version                                                                                                                                                                                                               | `""`                                                                                                                                                                                    |
 | `image.digest`                                | Overrides the Keycloak image tag with a digest                                                                                                                                                                                                                                    | `""`                                                                                                                                                                                    |

charts/keycloakx/templates/_helpers.tpl

@@ -37,6 +37,9 @@ helm.sh/chart: {{ include "keycloak.chart" . }}
 {{ include "keycloak.selectorLabels" . }}
 app.kubernetes.io/version: {{ .Values.image.tag | default .Chart.AppVersion | toString | trunc 63 | quote }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- range $key, $value := .Values.commonLabels }}
+{{ printf "%s: %s" $key (tpl $value $ | quote) }}
+{{- end }}
 {{- end }}
 
 {{/*

charts/keycloakx/templates/statefulset.yaml

@@ -38,6 +38,9 @@ spec:
         {{- end }}
       labels:
         {{- include "keycloak.selectorLabels" . | nindent 8 }}
+        {{- range $key, $value := .Values.commonLabels }}
+        {{- printf "%s: %s" $key (tpl $value $ | quote) | nindent 8 }}
+        {{- end }}
         {{- range $key, $value := .Values.podLabels }}
         {{- printf "%s: %s" $key (tpl $value $ | quote) | nindent 8 }}
         {{- end }}

charts/keycloakx/values.schema.json

@@ -109,6 +109,9 @@
     "command": {
       "type": "array"
     },
+    "commonLabels": {
+      "type": "object"
+    },
     "enableServiceLinks": {
       "type": "boolean"
     },

charts/keycloakx/values.yaml

@@ -11,6 +11,9 @@ namespaceOverride: ""
 # The number of replicas to create (has no effect if autoscaling enabled)
 replicas: 1
 
+# Additional labels applied to every resource in this chart, and on the StatefulSet's pods
+commonLabels: {}
+
 image:
   # The Keycloak image repository
   repository: quay.io/keycloak/keycloak