Merge pull request #173 from MediaMarktSaturn/knabben-applicationcronjob

feat(application) add CronJob capability

Author: heubeck

chart-tests/application/ci/test-cronjob-values.yaml

@@ -0,0 +1,16 @@
+cronJob:
+  enabled: true
+  schedule: "* * * * *"
+  successfulJobsHistoryLimit: 3
+  failedJobsHistoryLimit: 1
+  concurrencyPolicy: Forbid
+  activeDeadlineSeconds: 60
+  ttlSecondsAfterFinished: 86400
+  startingDeadlineSeconds: 200
+
+image:
+  repository: busybox
+  tag: stable
+
+container:
+  command: ["ls"]

chart-tests/application/ci/test-init-container-values.yaml

@@ -31,7 +31,6 @@ initContainers:
       tag: 9.3
     command: ['ls', '-lah', '/']
     env: {}
-    restartPolicy: Never
 
 
 initDefaults:

charts/application/Chart.yaml

@@ -7,4 +7,4 @@ maintainers:
   - name: MediaMarktSaturn
     url: https://github.com/MediaMarktSaturn
 appVersion: 1.0.0
-version: 1.30.0
+version: 1.31.0

charts/application/templates/_podTemplate.tpl

@@ -87,6 +87,9 @@ spec:
             name: {{ $ie }}
         {{- end }}
       {{- end }}
+      {{- if $i.restartPolicy }}
+      restartPolicy: {{ $i.restartPolicy }}
+      {{- end }}
       {{ $hasInitVolumeMount := 0 }}
       {{ range $.Values.volumeMounts }}{{ if (has .name $i.volumeMountNames) }}{{ $hasInitVolumeMount = 1 }}{{ end }}{{ end }}
       volumeMounts: {{ if not (or $i.secretVolumes (and $.Values.volumeMounts $hasInitVolumeMount)) -}}[]{{- end -}}
@@ -445,6 +448,9 @@ spec:
     {{- end }}
     {{- end }}
     {{- end }}
+  {{- if or .Values.podRestartPolicy .Values.cronJob.enabled }}
+  restartPolicy: {{ default "OnFailure" .Values.podRestartPolicy }}
+  {{- end }}
   {{- if .Values.tolerations }}
   tolerations:
     {{- toYaml .Values.tolerations | nindent 4 }}

charts/application/templates/k8s-cron-job.yaml

@@ -0,0 +1,24 @@
+{{- if .Values.cronJob.enabled }}
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: {{ .Release.Name }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "labels" . | nindent 4 }}
+  annotations:
+    release/time: {{ date "2006-01-02T15:04:05Z07:00" now }}
+    release/revision: {{ .Release.Revision | quote }}
+spec:
+  schedule: {{ .Values.cronJob.schedule | quote }}
+  concurrencyPolicy: {{ .Values.cronJob.concurrencyPolicy }}
+  startingDeadlineSeconds: {{ .Values.cronJob.startingDeadlineSeconds }}
+  successfulJobsHistoryLimit: {{ .Values.cronJob.successfulJobsHistoryLimit }}
+  failedJobsHistoryLimit: {{ .Values.cronJob.failedJobsHistoryLimit }}
+  jobTemplate:
+    spec:
+      ttlSecondsAfterFinished: {{ .Values.cronJob.ttlSecondsAfterFinished }}
+      activeDeadlineSeconds: {{ .Values.cronJob.activeDeadlineSeconds }}
+      template:
+        {{- include "podTemplate" . | nindent 8 }}
+{{- end }}

charts/application/templates/k8s-deployment.yaml

@@ -1,4 +1,4 @@
-{{- if not .Values.statefulSet.enabled }}
+{{- if not (or .Values.statefulSet.enabled .Values.cronJob.enabled)}}
 apiVersion: apps/v1
 kind: Deployment
 metadata:

charts/application/templates/k8s-pod-disruption-budget.yaml

@@ -1,4 +1,4 @@
-{{- if or .Values.disruptionBudget.minAvailable .Values.disruptionBudget.maxUnavailable }}
+{{- if and (or .Values.disruptionBudget.minAvailable .Values.disruptionBudget.maxUnavailable) (not .Values.cronJob.enabled) }}
 apiVersion: policy/v1
 kind: PodDisruptionBudget
 metadata:

charts/application/templates/k8s-service.yaml

@@ -1,4 +1,4 @@
-{{- if and .Values.service.enabled (not (and .Values.canary.enabled .Values.istio.enabled)) }}
+{{- if and .Values.service.enabled (not (and .Values.canary.enabled .Values.istio.enabled)) (not .Values.cronJob.enabled) }}
 apiVersion: v1
 kind: Service
 metadata:

charts/application/values.yaml

@@ -5,6 +5,19 @@ statefulSet:
   # The policy for how pods inside the statefulSet are handled: https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#pod-management-policies
   podManagementPolicy: OrderedReady
 
+cronJob:
+  enabled: false
+  schedule: ""
+  successfulJobsHistoryLimit: 3
+  failedJobsHistoryLimit: 1
+  concurrencyPolicy: Forbid
+  activeDeadlineSeconds: 60
+  ttlSecondsAfterFinished: 86400
+  startingDeadlineSeconds: 200
+
+# Defaulting to onFailure for cronJobs only: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#restart-policy
+podRestartPolicy:
+
 container:
   port: 8080
   securityContext:
@@ -412,6 +425,7 @@ initContainers: []
 #   # see initDefaults
 #   resources: {}
 #   securityContext: {}
+#   restartPolicy:
 #   # 'volumeMounts' names to be mounted in init container as well (under the same path); default: none
 #   volumeMountNames: []
 #   #  - data
@@ -427,7 +441,6 @@ initDefaults:
     limits:
       cpu: 500m
       memory: 100Mi
-  restartPolicy: Always
   # securityContext: {}
 
 # List of tolerations, will be taken over like-for-like to pod-spec