Chart.yaml

@@ -3,7 +3,7 @@ apiVersion: v2
 name: lib
 description: Common functions for my helm charts at home
 type: library
-version: 1.0.1
+version: 1.0.0
 kubeVersion: ">=1.27.0"
 home: git.rre.nu
 sources:

README.md

@@ -22,6 +22,9 @@ The following table lists the configurable parameters of the Lib chart and their
 | `controller.enabled` | should the main workload be included or not | `true` |
 | `controller.type` | valid options are deployment, statefulset, job | `"deployment"` |
 | `controller.replicas` | number of replicas | `1` |
+| `controller.lifecycle` | Define postStart and preStop handlers | `{}` |
+| `controller.command` | override the containers entrypoint | `null` |
+| `controller.args` | add argument to the override command | `[]` |
 | `image.repository` | container image name | `null` |
 | `image.pullPolicy` | kubernetes pull policy | `"IfNotPresent"` |
 | `image.tag` | Overrides the image tag whose default is the chart appVersion. | `""` |
@@ -45,7 +48,8 @@ The following table lists the configurable parameters of the Lib chart and their
 | `autoscaling.targetCPUUtilizationPercentage` |  | `80` |
 | `secrets` | Secrets that needs to be created | `{}` |
 | `configs` | ConfigMaps that needs to be created | `{}` |
-| `env` | environment variables the controller should have | `[{"name": "TZ", "value": "Europe/Stockholm"}]` |
+| `envFrom` | mount environment variables from secrets or configMaps | `[]` |
+| `env.TZ` |  | `"Europe/Stockholm"` |
 | `volumes` |  | `[]` |
 | `volumeMounts` |  | `[]` |
 | `volumeClaimTemplates` | used for statefulset https://kubernetes.io/docs/concepts/workloads/controllers/statefulset | `[]` |

templates/_configmaps.tpl

@@ -1,6 +1,6 @@
 {{- define "lib.configs" -}}
 {{- $fullName := include "lib.fullname" . -}}
-{{- $namespace := .Values.namespace -}}
+{{- $namespace := .Values.namespace | default "default" -}}
 {{- $commonLabels := include "lib.labels" . }}
 {{- range $name, $values := .Values.configs }}
 {{- if $values.enabled -}}

templates/_deployment.tpl

@@ -21,7 +21,7 @@ spec:
       {{- end }}
       labels:
         {{- include "lib.labels" . | nindent 8 }}
-        {{- with .Values.podLabels }}
+        {{- with .Values.controller.labels }}
         {{- toYaml . | nindent 8 }}
         {{- end }}
     spec:
@@ -33,38 +33,7 @@ spec:
       securityContext:
         {{- toYaml .Values.podSecurityContext | nindent 8 }}
       containers:
-        - name: {{ .Chart.Name }}
-          securityContext:
-            {{- toYaml .Values.securityContext | nindent 12 }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
-          imagePullPolicy: {{ .Values.image.pullPolicy }}
-          ports:
-          {{- range $name, $values := .Values.service -}}
-          {{- if $values.enabled -}}
-          {{- range $k, $v := $values.ports }}
-            - name: {{ $k }}
-              containerPort: {{ default $v.port $v.targetPort }}
-          {{- end -}}
-          {{- end -}}
-          {{- end }}
-          env:
-            {{- include "lib.environmentVariables" . | default "[]" | nindent 12 }}
-          {{- with .Values.livenessProbe }}
-          livenessProbe:
-            {{- toYaml . | nindent 12 }}
-          {{- end }}
-          {{- with .Values.readinessProbe }}
-          readinessProbe:
-            {{- toYaml . | nindent 12 }}
-          {{- end }}
-          {{- with .Values.resources }}
-          resources:
-            {{- toYaml . | nindent 12 }}
-          {{- end }}
-          {{- with .Values.volumeMounts }}
-          volumeMounts:
-            {{- toYaml . | nindent 12 }}
-          {{- end }}
+        {{- include "lib.parts.container" . | nindent 8 -}}
       {{- with .Values.volumes }}
       volumes:
         {{- toYaml . | nindent 8 }}

templates/_helpers.tpl

@@ -72,54 +72,3 @@ Merge the local chart values and the library chart defaults
     {{- $_ := set . "Values" (deepCopy $mergedValues) -}}
   {{- end -}}
 {{- end -}}
-
-{{/*
-Get all environment variables and
-secrets that should be mounted as environment variables
-*/}}
-{{- define "lib.environmentVariables" -}}
-{{- $envIncluded := "false" -}}
-{{- $fullName := include "lib.fullname" . -}}
-{{- range $name, $settings := .Values.secrets -}}
-{{- if $settings.enabled -}}
-{{- if $settings.env -}}
-{{- $envIncluded := "true" -}}
-{{- range $key, $value := $settings.data }}
-- name: {{ $key }}
-  valueFrom:
-    secretKeyRef:
-      name: {{ $fullName }}-{{ $name }}
-      key: {{ $key }}
-{{- end -}}
-{{- range $key, $value := $settings.stringData }}
-- name: {{ $key }}
-  valueFrom:
-    secretKeyRef:
-      name: {{ $fullName }}-{{ $name }}
-      key: {{ $key }}
-{{- end -}}
-{{- end -}}
-{{- end -}}
-{{- end -}}
-{{- range $name, $settings := .Values.configs -}}
-{{- if $settings.enabled -}}
-{{- if $settings.env -}}
-{{- $envIncluded := "true" -}}
-{{- range $key, $value := $settings.data }}
-- name: {{ $key }}
-  valueFrom:
-    configMapKeyRef:
-      name: {{ $fullName }}-{{ $name }}
-      key: {{ $key }}
-{{- end -}}
-{{- end -}}
-{{- end -}}
-{{- end -}}
-{{- if $envIncluded = "true" -}}
-  {{- if .Values.env -}}
-    {{- toYaml .Values.env | nindent 0 -}}
-  {{- end -}}
-{{- else -}}
-  {{- toYaml .Values.env | nindent 0 -}}
-{{- end -}}
-{{- end -}}

templates/_ingress.tpl

@@ -7,6 +7,7 @@
   {{- $_ := set .Values.ingress.annotations "kubernetes.io/ingress.class" .Values.ingress.className}}
   {{- end }}
 {{- end }}
+---
 {{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
 apiVersion: networking.k8s.io/v1
 {{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
@@ -20,8 +21,7 @@ metadata:
   namespace: {{ .Values.namespace }}
   labels:
     {{- include "lib.labels" . | nindent 4 }}
-  {{- with .Values.ingressingresstservicePort }}
-  {{- $svcName := .Values.ingress.service -}}
+  {{- with .Values.ingress.annotations }}
   annotations:
     {{- toYaml . | nindent 4 }}
   {{- end }}
@@ -52,7 +52,7 @@ spec:
             backend:
               {{- if semverCompare ">=1.19-0" $.Capabilities.KubeVersion.GitVersion }}
               service:
-                name: {{ $fullName }}-${{ $svcName }}
+                name: {{ $fullName }}-{{ $svcName }}
                 port:
                   number: {{ $svcPort }}
               {{- else }}

templates/_secrets.tpl

@@ -1,6 +1,6 @@
 {{- define "lib.secrets" -}}
 {{- $fullName := include "lib.fullname" . -}}
-{{- $namespace := .Values.namespace -}}
+{{- $namespace := .Values.namespace | default "default" -}}
 {{- $commonLabels := include "lib.labels" . }}
 {{- range $name, $values := .Values.secrets }}
 {{- if $values.enabled -}}

templates/_statefulset.tpl

@@ -35,39 +35,7 @@ spec:
       securityContext:
         {{- toYaml .Values.controller.podSecurityContext | nindent 8 }}
       containers:
-        - name: {{ .Chart.Name }}
-          securityContext:
-            {{- toYaml .Values.controller.securityContext | nindent 12 }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
-          imagePullPolicy: {{ .Values.image.pullPolicy }}
-          ports:
-          {{- range $name, $values := .Values.service -}}
-          {{- if $values.enabled -}}
-          {{- range $k, $v := $values.ports }}
-            - name: {{ $k }}
-              containerPort: {{ $v.targetPort | default $v.port }}
-          {{- end -}}
-          {{- end -}}
-          {{- end }}
-          env:
-            {{- include "lib.environmentVariables" . | default "[]" | nindent 12 }}
-          {{- with .Values.livenessProbe }}
-          livenessProbe:
-            {{- toYaml . | nindent 12 }}
-          {{- end }}
-          {{- with .Values.readinessProbe }}
-          readinessProbe:
-            {{- toYaml . | nindent 12 }}
-          {{- end }}
-          {{- with .Values.resources }}
-          resources:
-            {{- toYaml . | nindent 12 }}
-          {{- end }}
-          volumeMounts:
-            {{- range $i, $values := .Values.volumeClaimTemplates }}
-            - name: {{ $values.name }}
-              mountPath: {{ $values.mountPath }}
-            {{- end }}
+        {{- include "lib.parts.container" . | nindent 8 -}}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}

templates/parts/_containers.tpl

@@ -0,0 +1,47 @@
+{{- define "lib.parts.container" -}}
+{{/*
+create the environment varable list
+*/}}
+- name: {{ .Chart.Name }}
+  securityContext:
+    {{- toYaml .Values.securityContext | nindent 4 }}
+  image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+  imagePullPolicy: {{ .Values.image.pullPolicy }}
+  {{- with .Values.controller.command }}
+  command: {{ toYaml . | nindent 4}}
+  {{- end }}
+  {{- with .Values.controller.args }}
+  args: {{ toYaml . | nindent 4 }}
+  {{- end }}
+  {{- with .Values.controller.lifecycle }}
+  lifecycle:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  ports:
+  {{- range $name, $values := .Values.service -}}
+  {{- if $values.enabled -}}
+  {{- range $k, $v := $values.ports }}
+    - name: {{ $k }}
+      containerPort: {{ default $v.port $v.targetPort }}
+  {{- end -}}
+  {{- end -}}
+  {{- end }}
+  env:
+    {{- include "lib.parts.env" . | nindent 4 -}}
+  {{- with .Values.livenessProbe }}
+  livenessProbe:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- with .Values.readinessProbe }}
+  readinessProbe:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- with .Values.resources }}
+  resources:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- with .Values.volumeMounts }}
+  volumeMounts:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}

templates/parts/_env.tpl

@@ -0,0 +1,26 @@
+{{/*
+Get all environment variables configMaps and
+secrets that should be mounted as environment variables
+*/}}
+{{- define "lib.parts.env" -}}
+  {{/*
+  environment variables from .Values.env
+  */}}
+  {{- range $name, $value := .Values.env -}}
+    {{- printf "- name: %s" $name | nindent 0 }}
+    {{- printf "value: %s" $value | nindent 2 }}
+  {{- end -}}
+  {{/*
+  environment variables from configMaps
+  */}}
+  {{- range $cfgName, $settings := .Values.configs -}}
+    {{- if and $settings.enabled $settings.env -}}
+      {{- range $key, $value := $settings.data -}}
+        {{- printf "- name: %s" $key | nindent 0 }}
+        {{- printf "valueFrom:" | nindent 2 }}
+        {{- printf "configMapKeyRef:" | nindent 4 }}
+        {{- printf "name: %s" $key | nindent 5 }}
+      {{- end }}
+    {{- end }}
+  {{- end -}}
+{{- end -}}

values.yaml

@@ -4,6 +4,9 @@ controller: # main workload
   enabled: true # should the main workload be included or not
   type: deployment # valid options are deployment, statefulset, job
   replicas: 1 # number of replicas
+  lifecycle: {} # Define postStart and preStop handlers
+  command: # override the containers entrypoint
+  args: [] # add argument to the override command
 
 image:
   repository:  # container image name
@@ -85,22 +88,27 @@ secrets: {} # Secrets that needs to be created
 #     type:     #default Opaque
 #     annotations: {}
 #     labels: {}
-#     env: false #should template load each key in the seacret as
 #     data:
 #        KEY: VALUE
 
 configs: {} # ConfigMaps that needs to be created
 # configs:
 #   <name>:
+#     enabled: false # should the configMap be created or not
 #     annotations: {}
 #     labels: {}
-#     env: false #should template load each key in the seacret as
 #     data:
 #        KEY: VALUE
 
+envFrom: [] # mount environment variables from secrets or configMaps
+# - configMapRef:
+#     name: config-map-name
+# - secretRef:
+#     name: secret-name
+
 env:  # environment variables the controller should have
-  - name: TZ
-    value: Europe/Stockholm
+  TZ: Europe/Stockholm
+
 # Additional volumes on the output Deployment definition.
 volumes: []
 # - name: foo