Add Helm chart for download-from-github-repo

download-from-github-repo/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

download-from-github-repo/Chart.yaml

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+apiVersion: v2
+appVersion: 0.1.0
+description: Download a file from a github repo
+name: download-from-github-repo
+type: application
+version: 0.1.0

download-from-github-repo/templates/_helpers.tpl

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+{{/* vim: set syntax=helm: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "download-from-github-repo.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "download-from-github-repo.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "download-from-github-repo.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "download-from-github-repo.labels" -}}
+helm.sh/chart: {{ include "download-from-github-repo.chart" . }}
+{{ include "download-from-github-repo.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "download-from-github-repo.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "download-from-github-repo.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "download-from-github-repo.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "download-from-github-repo.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
+
+{{/*
+Name of the job
+*/}}
+{{- define "download-from-github-repo.jobName" -}}
+{{ include "download-from-github-repo.fullname" . }}
+{{- end }}
+

download-from-github-repo/templates/job.yaml

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+# vim: set filetype=helm:
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ include "download-from-github-repo.jobName" . }}
+  labels:
+    {{- include "download-from-github-repo.labels" . | nindent 4 }}
+spec:  
+  backoffLimit: 1
+  completions: 1
+  parallelism: 1
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "download-from-github-repo.selectorLabels" . | nindent 8 }}
+    spec:
+      restartPolicy: Never
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "download-from-github-repo.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      volumes:
+      {{- if .Values.job.persistence }}
+      - name: work
+        persistentVolumeClaim:
+          claimName: {{ .Values.job.persistence.pvcName }}
+      {{- else }}
+      - name: work
+        emptyDir: {}
+      {{- end }}{{/* if .Values.job.persistence */}}
+      initContainers:
+      - name: download
+        image: "{{ .Values.job.download.image.repository }}:{{ .Values.job.download.image.tag }}"
+        imagePullPolicy: {{ .Values.job.download.image.pullPolicy }}
+        securityContext:
+          {{- toYaml .Values.securityContext | nindent 10 }}
+        env:
+        {{- with .Values.githubRepo }}
+        - name: repoName
+          value: {{ .name }}
+        - name: accessToken
+          valueFrom:
+            secretKeyRef:
+              name: {{ .accessToken.secretName }}
+              key: {{ .accessToken.key }}
+        - name: repoTag
+          value: {{ .tag }}
+        {{- end }}{{/* .Values.githubRepo */}}
+        - name: filePath
+          value: {{ .Values.job.filePath  }}
+        - name: outputFilePath
+          value: {{ .Values.job.outputFilePath }}
+        - name: apiUrl
+          # https://docs.github.com/en/rest/repos/contents?apiVersion=2022-11-28
+          value: >-
+            https://$(accessToken)@api.github.com/repos/$(repoName)/contents/$(filePath)?ref=$(repoTag)
+        command: [ "sh", "-u", "-e" ]
+        args:
+        - -c
+        - >-
+          curl -f -v --create-dirs --output ${outputFilePath} $(curl -f -v "${apiUrl}"| jq -r .download_url)
+        workingDir: /work
+        volumeMounts:
+        - name: work
+          mountPath: /work
+        resources: {{- toYaml .Values.resources | nindent 10 }}
+      containers:
+      - name: process
+        image: "{{ .Values.job.process.image.repository }}:{{ .Values.job.process.image.tag }}"
+        imagePullPolicy: {{ .Values.job.process.image.pullPolicy }}
+        securityContext:
+          {{- toYaml .Values.securityContext | nindent 10 }}
+        env:
+        - name: outputFilePath
+          value: {{ .Values.job.outputFilePath }}
+        {{- with .Values.job.process.extraEnv }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}{{/* with .Values.job.process.extraEnv */}}
+        command: {{- toYaml (.Values.job.process.command) | nindent 8 }}
+        workingDir: /work
+        volumeMounts:
+        - name: work
+          mountPath: /work
+        resources: {{- toYaml .Values.resources | nindent 10 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

download-from-github-repo/templates/serviceaccount.yaml

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+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "download-from-github-repo.serviceAccountName" . }}
+  labels:
+    {{- include "download-from-github-repo.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}

download-from-github-repo/values.yaml

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+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+serviceAccount:
+  create: false
+  annotations: {}
+  name: ""
+
+podAnnotations: {}
+
+podSecurityContext:
+  runAsUser: 1000
+  runAsGroup: 1000
+  fsGroup: 1000
+  seccompProfile:
+    type: RuntimeDefault
+
+securityContext:
+  capabilities:
+    drop:
+    - ALL
+  readOnlyRootFilesystem: true
+  runAsNonRoot: true
+  allowPrivilegeEscalation: false
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+nodeSelector: {}
+tolerations: []
+affinity: {}
+
+githubRepo:
+  name: NowhereLand/helloworld
+  tag: main
+  # a personal access token with read permissions on the repo
+  accessToken: 
+    secretName: github-access-token
+    key: token
+
+job:
+  # path to file (relative to github repo)
+  filePath: path/to/1.xt 
+  outputFilePath: out/1.txt
+  #persistence:
+  #  pvcName: 
+  download:
+    image:
+      repository: ghcr.io/opertusmundi/curl-jq 
+      pullPolicy: IfNotPresent
+      tag: "8-alpine"
+  process:
+    image:
+      repository: alpine
+      pullPolicy: IfNotPresent
+      tag: "3.19"
+    extraEnv: []
+    #- name: foo
+    #  value: Bar  
+    command: 
+    - sh
+    - -c
+    - >-
+      stat ${outputFilePath}
+