helm: add named template that creates the specification for a cronjob

closes reanahub#695

CHANGES.rst

@@ -10,6 +10,8 @@ Version 0.9.1 (UNRELEASED)
  - Adds support for Kubernetes clusters 1.26.
  - Adds new configuration option ``ingress.extra`` to define extra Ingress resources, in order to support redirecting HTTP requests to HTTPS with traefik v2 version.
  - Adds new configuration option ``ingress.tls.hosts`` to define hosts that are present in the TLS certificate, in order to support cert-manager's automatic creation of certificates.
+- Developers:
+ - Adds Helm named template that creates the specification for a cronjob.
 
 Version 0.9.0 (2023-01-26)
 --------------------------

helm/reana/templates/_helpers.tpl

@@ -53,3 +53,92 @@ hostPath:
 {{ template "reana.shared_volume" . }}
 {{- end -}}
 {{- end -}}
+
+{{/* Create the specification of cronjob. */}}
+{{- define "reana.cronjob_spec" -}}
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+ name: {{ include "reana.prefix" .scope }}-{{ .name }}
+ namespace: {{ .scope.Release.Namespace }}
+spec:
+ schedule: {{ .schedule | quote }}
+ concurrencyPolicy: Forbid
+ successfulJobsHistoryLimit: 1
+ failedJobsHistoryLimit: 1
+ {{- if .scope.Values.maintenance.enabled }}
+ suspend: true
+ {{- end }}
+ jobTemplate:
+ spec:
+ template:
+ spec:
+ serviceAccountName: {{ include "reana.prefixed_infrastructure_svaccount_name" .scope }}
+ containers:
+ - name: {{ include "reana.prefix" .scope }}-{{ .name }}
+ image: {{ .scope.Values.components.reana_server.image }}
+ command:
+ - '/bin/sh'
+ - '-c'
+ args:
+ {{- range .container_args }}
+ - {{ . | quote }}
+ {{- end }}
+ {{- if .scope.Values.debug.enabled }}
+ tty: true
+ stdin: true
+ {{- end }}
+ env:
+ {{- range $key, $value := .env_vars }}
+ - name: {{ $key }}
+ value: {{ $value | quote }}
+ {{- end }}
+ {{- range $key, $value := .env_vars_from_secret }}
+ - name: {{ $key }}
+ valueFrom:
+ secretKeyRef:
+ name: {{ first $value | quote }}
+ key: {{ last $value }}
+ {{- end }}
+ {{- range $key, $value := .scope.Values.db_env_config }}
+ - name: {{ $key }}
+ value: {{ $value | quote }}
+ {{- end }}
+ {{- if .scope.Values.debug.enabled }}
+ - name: FLASK_ENV
+ value: "development"
+ {{- else }}
+ - name: REANA_DB_USERNAME
+ valueFrom:
+ secretKeyRef:
+ name: {{ include "reana.prefix" .scope }}-db-secrets
+ key: user
+ - name: REANA_DB_PASSWORD
+ valueFrom:
+ secretKeyRef:
+ name: {{ include "reana.prefix" .scope }}-db-secrets
+ key: password
+ {{- end }}
+ volumeMounts:
+ {{- if .scope.Values.debug.enabled }}
+ - mountPath: /code/
+ name: reana-code
+ {{- end }}
+ - mountPath: {{ .scope.Values.shared_storage.shared_volume_mount_path }}
+ name: reana-shared-volume
+ imagePullPolicy: IfNotPresent
+ restartPolicy: Never
+ volumes:
+ - name: reana-shared-volume
+ {{- if not (eq .scope.Values.shared_storage.backend "hostpath") }}
+ persistentVolumeClaim:
+ claimName: {{ include "reana.prefix" .scope }}-shared-persistent-volume
+ readOnly: false
+ {{- else }}
+ hostPath:
+ path: {{ .scope.Values.shared_storage.hostpath.root_path }}
+ {{- end }}
+ - name: reana-code
+ hostPath:
+ path: /code/reana-server
+{{- end }}