From 668a256de1827952135dc09aee810c3558e8609b Mon Sep 17 00:00:00 2001
From: Glenn de Haan <glenn@dehaan.cloud>
Date: Fri, 18 Nov 2022 11:15:15 +0100
Subject: [PATCH] Added the traefik-redirect chart

---
 charts/traefik-redirect/.helmignore           | 23 +++++++
 charts/traefik-redirect/Chart.yaml            | 34 ++++++++++
 .../traefik-redirect/templates/_helpers.tpl   | 62 +++++++++++++++++++
 .../traefik-redirect/templates/ingress.yaml   | 23 +++++++
 .../templates/middleware.yaml                 | 11 ++++
 charts/traefik-redirect/values.yaml           | 15 +++++
 6 files changed, 168 insertions(+)
 create mode 100644 charts/traefik-redirect/.helmignore
 create mode 100644 charts/traefik-redirect/Chart.yaml
 create mode 100644 charts/traefik-redirect/templates/_helpers.tpl
 create mode 100644 charts/traefik-redirect/templates/ingress.yaml
 create mode 100644 charts/traefik-redirect/templates/middleware.yaml
 create mode 100644 charts/traefik-redirect/values.yaml

diff --git a/charts/traefik-redirect/.helmignore b/charts/traefik-redirect/.helmignore
new file mode 100644
index 0000000..0e8a0eb
--- /dev/null
+++ b/charts/traefik-redirect/.helmignore
@@ -0,0 +1,23 @@
+# 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/
diff --git a/charts/traefik-redirect/Chart.yaml b/charts/traefik-redirect/Chart.yaml
new file mode 100644
index 0000000..5c0db8a
--- /dev/null
+++ b/charts/traefik-redirect/Chart.yaml
@@ -0,0 +1,34 @@
+apiVersion: v2
+name: traefik-redirect
+description: A Helm chart to create a simple http(s) redirect within Traefik
+home: https://github.com/glenndehaan/charts
+keywords:
+  - kubernetes
+  - traefik
+  - redirect
+maintainers:
+  - email: glenn@dehaan.cloud
+    name: glenndehaan
+sources:
+  - https://github.com/glenndehaan/charts
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 1.0.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.0.0"
diff --git a/charts/traefik-redirect/templates/_helpers.tpl b/charts/traefik-redirect/templates/_helpers.tpl
new file mode 100644
index 0000000..3687a24
--- /dev/null
+++ b/charts/traefik-redirect/templates/_helpers.tpl
@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "traefik-redirect.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 "traefik-redirect.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 "traefik-redirect.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "traefik-redirect.labels" -}}
+helm.sh/chart: {{ include "traefik-redirect.chart" . }}
+{{ include "traefik-redirect.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "traefik-redirect.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "traefik-redirect.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "traefik-redirect.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "traefik-redirect.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
diff --git a/charts/traefik-redirect/templates/ingress.yaml b/charts/traefik-redirect/templates/ingress.yaml
new file mode 100644
index 0000000..e4252e9
--- /dev/null
+++ b/charts/traefik-redirect/templates/ingress.yaml
@@ -0,0 +1,23 @@
+apiVersion: traefik.containo.us/v1alpha1
+kind: IngressRoute
+metadata:
+  name: {{ include "traefik-redirect.fullname" . }}
+  labels:
+    {{- include "traefik-redirect.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- with .Values.ingress.entryPoints }}
+  entryPoints:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  routes:
+    - match: 'Host(`{{ .Values.ingress.host }}`) && PathPrefix(`/`)'
+      kind: Rule
+      middlewares:
+        - name: {{ include "traefik-redirect.fullname" . }}
+      services:
+        - name: noop@internal
+          kind: TraefikService
diff --git a/charts/traefik-redirect/templates/middleware.yaml b/charts/traefik-redirect/templates/middleware.yaml
new file mode 100644
index 0000000..e93a5ed
--- /dev/null
+++ b/charts/traefik-redirect/templates/middleware.yaml
@@ -0,0 +1,11 @@
+apiVersion: traefik.containo.us/v1alpha1
+kind: Middleware
+metadata:
+  name: {{ include "traefik-redirect.fullname" . }}
+  labels:
+    {{- include "traefik-redirect.labels" . | nindent 4 }}
+spec:
+  redirectRegex:
+    regex: ^https?://{{ .Values.ingress.host }}/(.*)
+    replacement: https://{{ .Values.ingress.redirect }}/${1}
+    permanent: true
diff --git a/charts/traefik-redirect/values.yaml b/charts/traefik-redirect/values.yaml
new file mode 100644
index 0000000..93f5fb9
--- /dev/null
+++ b/charts/traefik-redirect/values.yaml
@@ -0,0 +1,15 @@
+# Default values for traefik-redirect.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+nameOverride: ""
+fullnameOverride: ""
+
+ingress:
+  entryPoints:
+    - websecure
+  annotations: {}
+    # kubernetes.io/ingress.class: nginx
+    # kubernetes.io/tls-acme: "true"
+  host: chart-example.local
+  redirect: chart-example-new.local