Init chart and exchange

nbgrader-chart/.gitignore

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+**/charts/*.tgz

nbgrader-chart/.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/

nbgrader-chart/Chart.lock

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+dependencies:
+- name: jupyterhub
+  repository: https://hub.jupyter.org/helm-chart/
+  version: 3.0.3
+digest: sha256:fad52e3374588bd08d3382acd452a9335ad66337b49ce973d1b6383c185d4388
+generated: "2023-11-10T10:37:31.611068395+01:00"

nbgrader-chart/Chart.yaml

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+apiVersion: v2
+name: nbgrader
+description: A Helm chart for deploying nbgrader
+type: application
+version: 0.1.0
+appVersion: '0.9.1'
+
+dependencies:
+  - name: jupyterhub
+    version: 3.0.3
+    repository: https://hub.jupyter.org/helm-chart/

nbgrader-chart/templates/_helpers.tpl

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+{{/*
+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 "nbgrader.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 }}

nbgrader-chart/templates/cm.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: nbgrader-config-global
+data:
+  nbgrader_config.py: |
+    import os
+    from nbgrader.server_extensions.assignment_list.handlers import AssignmentList
+    from nbgrader.auth import Authenticator, JupyterHubAuthPlugin
+
+    c = get_config()
+    c.Exchange.path_includes_course = True
+    c.Exchange.root = "/mnt/exchange"
+    c.Authenticator.plugin_class = JupyterHubAuthPlugin
+
+    c.ExchangeFactory.collect = 'nbgrader_k8s_exchange.plugin.ExchangeCollect'
+    c.ExchangeFactory.exchange = 'nbgrader_k8s_exchange.plugin.Exchange'
+    c.ExchangeFactory.fetch_assignment = 'nbgrader_k8s_exchange.plugin.ExchangeFetchAssignment'
+    c.ExchangeFactory.fetch_feedback = 'nbgrader_k8s_exchange.plugin.ExchangeFetchFeedback'
+    c.ExchangeFactory.list = 'nbgrader_k8s_exchange.plugin.ExchangeList'
+    c.ExchangeFactory.release_assignment = 'nbgrader_k8s_exchange.plugin.ExchangeReleaseAssignment'
+    c.ExchangeFactory.release_feedback = 'nbgrader_k8s_exchange.plugin.ExchangeReleaseFeedback'
+    c.ExchangeFactory.submit = 'nbgrader_k8s_exchange.plugin.ExchangeSubmit'
+
+    # List courses for the student even if there are no assignments
+    def list_courses(self):
+        auth = Authenticator(config=c)
+
+        return {
+          "success": True,
+          "value":  auth.get_student_courses(os.environ['JUPYTERHUB_USER'])
+        }
+
+    AssignmentList.list_courses = list_courses

nbgrader-chart/templates/pvc.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: nbgrader-exchange
+spec:
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: {{ .Values.exchange.size }}
+  storageClassName: {{ .Values.exchange.storageClassName }}
+  volumeMode: Filesystem

nbgrader-chart/templates/svc.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "nbgrader.fullname" . }}
+spec:
+  clusterIP: None
+  selector:
+    app: jupyterhub
+    component: hub