Create a chart for YOURLS function

charts/function/.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
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+
+# OWNERS file for Kubernetes
+OWNERS
+# example production yaml
+values-production.yaml
+# ci files
+ci/

charts/function/Chart.yaml

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+apiVersion: v2
+version: 0.0.1
+name: function
+description: Serverless Function
+appVersion: "1.0.0"
+type: application
+keywords:
+  - shortener
+  - url
+  - bitly
+home: https://yourls.org
+icon: https://yourls.org/images/yourls-logo.png
+sources:
+  - https://github.com/YOURLS/function
+  - https://github.com/YOURLS/charts
+maintainers:
+  - name: YOURLS
+    email: [email protected]
+  - name: LeoColomb
+    email: [email protected]
+kubeVersion: ">=1.20.0-0"
+dependencies:
+  - name: common
+    repository: https://charts.bitnami.com/bitnami
+    version: ^1.11.1
+    tags:
+      - bitnami-common
+  - condition: redis.enabled
+    name: redis
+    repository: https://charts.bitnami.com/bitnami
+    version: ^16.4.0
+    tags:
+      - function-database
+annotations:
+  artifacthub.io/license: MIT
+  artifacthub.io/links: |
+    - name: Upstream Project
+      url: https://github.com/YOURLS/function
+  artifacthub.io/signKey: |
+    fingerprint: 6FCD850E18E4A4FF76DD1184A3A42A61961E423F
+    url: https://yourls.org/.well-known/openpgpkey/hu/6e4gbtp15q1znf3unweeducn7urty4mr
+  artifacthub.io/changes: |
+    - kind: added
+      description: First version

charts/function/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+
+{{/*
+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).
+*/}}
+{{- define "function.redis.fullname" -}}
+{{- include "common.names.dependency.fullname" (dict "chartName" "redis" "chartValues" .Values.redis "context" $) -}}
+{{- end -}}
+
+{{/*
+Return the proper YOURLS image name
+*/}}
+{{- define "function.image" -}}
+{{- $imageRoot := .Values.image -}}
+{{- if not .Values.image.tag }}
+    {{- $tag := (dict "tag" .Chart.AppVersion) -}}
+    {{- $imageRoot := merge .Values.image $tag -}}
+{{- end -}}
+{{- include "common.images.image" (dict "imageRoot" $imageRoot "global" .Values.global) -}}
+{{- end -}}
+
+{{/*
+Return the Function Secret Name
+*/}}
+{{- define "function.secretName" -}}
+{{- if .Values.function.existingSecret }}
+    {{- printf "%s" .Values.function.existingSecret -}}
+{{- else -}}
+    {{- printf "%s" (include "common.names.fullname" .) -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return the Redis™ hostname
+*/}}
+{{- define "function.redisHost" -}}
+{{- if .Values.redis.enabled }}
+    {{- printf "%s-master" (include "function.redis.fullname" .) -}}
+{{- else -}}
+    {{- printf "%s" .Values.externalDatabase.host -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return the Redis™ port
+*/}}
+{{- define "function.redisPort" -}}
+{{- if .Values.redis.enabled }}
+    {{- printf "6379" | quote -}}
+{{- else -}}
+    {{- .Values.externalDatabase.port | quote -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return true if a secret object for Redis™ should be created
+*/}}
+{{- define "function.redis.createSecret" -}}
+{{- if and (not .Values.redis.enabled) (not .Values.externalDatabase.existingSecret) .Values.externalDatabase.password }}
+    {{- true -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return the Redis™ secret name
+*/}}
+{{- define "function.redis.secretName" -}}
+{{- if .Values.redis.enabled }}
+    {{- if .Values.redis.auth.existingSecret }}
+        {{- printf "%s" .Values.redis.auth.existingSecret -}}
+    {{- else -}}
+        {{- printf "%s" (include "function.redis.fullname" .) -}}
+    {{- end -}}
+{{- else if .Values.externalDatabase.existingSecret }}
+    {{- printf "%s" .Values.externalDatabase.existingSecret -}}
+{{- else -}}
+    {{- printf "%s-redis" (include "common.names.fullname" .) -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return the Redis™ secret key
+*/}}
+{{- define "function.redis.secretPasswordKey" -}}
+{{- if and .Values.redis.enabled .Values.redis.auth.existingSecret }}
+    {{- required "You need to provide existingSecretPasswordKey when an existingSecret is specified in redis" .Values.redis.auth.existingSecretPasswordKey | printf "%s" }}
+{{- else if and (not .Values.redis.enabled) .Values.externalDatabase.existingSecret }}
+    {{- required "You need to provide existingSecretPasswordKey when an existingSecret is specified in redis" .Values.externalDatabase.existingSecretPasswordKey | printf "%s" }}
+{{- else -}}
+    {{- printf "redis-password" -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return whether Redis™ uses password authentication or not
+*/}}
+{{- define "function.redis.auth.enabled" -}}
+{{- if or (and .Values.redis.enabled .Values.redis.auth.enabled) (and (not .Values.redis.enabled) (or .Values.externalDatabase.password .Values.externalDatabase.existingSecret)) }}
+    {{- true -}}
+{{- end -}}
+{{- end -}}

charts/function/templates/configmaps.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "common.names.fullname" . }}
+  labels: {{- include "common.labels.standard" . | nindent 4 }}
+  {{- if .Values.commonLabels }}
+  {{- include "common.tplvalues.render" ( dict "value" .Values.commonLabels "context" $ ) | nindent 4 }}
+  {{- end }}
+  {{- if .Values.commonAnnotations }}
+  annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
+  {{- end }}
+data:
+  REDIS_HOST: {{ template "function.redisHost" . }}
+  REDIS_PORT_NUMBER: {{ template "function.redisPort" . }}

charts/function/templates/externaldb-secrets.yaml

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+{{- if (include "function.redis.createSecret" .) }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ template "common.names.fullname" . }}-redis
+  labels: {{- include "common.labels.standard" . | nindent 4 }}
+  {{- if .Values.commonLabels }}
+  {{- include "common.tplvalues.render" ( dict "value" .Values.commonLabels "context" $ ) | nindent 4 }}
+  {{- end }}
+  {{- if .Values.commonAnnotations }}
+  annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
+  {{- end }}
+type: Opaque
+data:
+  redis-password: {{ .Values.externalDatabase.password | b64enc | quote }}
+{{- end }}

charts/function/templates/secrets.yaml

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+{{- if not .Values.function.existingSecret }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ template "common.names.fullname" . }}
+  namespace: {{ .Release.Namespace | quote }}
+  labels: {{- include "common.labels.standard" . | nindent 4 }}
+    {{- if .Values.commonLabels }}
+    {{- include "common.tplvalues.render" ( dict "value" .Values.commonLabels "context" $ ) | nindent 4 }}
+    {{- end }}
+  {{- if .Values.commonAnnotations }}
+  annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
+  {{- end }}
+type: Opaque
+data:
+  endpoint: {{ .Values.function.endpoint | b64enc | quote }}
+  token: {{ .Values.function.token | b64enc | quote }}
+{{- end }}

charts/function/templates/service.yaml

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+apiVersion: serving.knative.dev/v1
+kind: Service
+metadata:
+  name: {{ include "common.names.fullname" . }}
+  namespace: {{ .Release.Namespace | quote }}
+  labels: {{- include "common.labels.standard" . | nindent 4 }}
+    {{- if .Values.commonLabels }}
+    {{- include "common.tplvalues.render" ( dict "value" .Values.commonLabels "context" $ ) | nindent 4 }}
+    {{- end }}
+  {{- if .Values.commonAnnotations }}
+  annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
+  {{- end }}
+spec:
+  template:
+    metadata:
+      labels: {{- include "common.labels.standard" . | nindent 8 }}
+        {{- if .Values.podLabels }}
+        {{- include "common.tplvalues.render" (dict "value" .Values.podLabels "context" $) | nindent 8 }}
+        {{- end }}
+      {{- if or .Values.podAnnotations }}
+      annotations:
+        {{- if .Values.podAnnotations }}
+        {{- include "common.tplvalues.render" (dict "value" .Values.podAnnotations "context" $) | nindent 8 }}
+        {{- end }}
+      {{- end }}
+    spec:
+      containers:
+        - name: function
+          image: {{ template "function.image" . }}
+          env:
+            {{- if (include "function.redis.auth.enabled" .) }}
+            - name: REDIS_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "function.redis.secretName" . }}
+                  key: {{ include "function.redis.secretPasswordKey" . }}
+            {{- end }}
+            - name: YOURLS_ENDPOINT
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "function.secretName" . }}
+                  key: endpoint
+            - name: YOURLS_TOKEN
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "function.secretName" . }}
+                  key: token
+          envFrom:
+            - configMapRef:
+                name: {{ include "common.names.fullname" . }}