Add comet-ingress (#106)

* Add comet-ingress

* Use correct plural naming

.changeset/short-avocados-destroy.md

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+---
+"comet-ingress-v1": major
+---
+
+Add `comet-ingress` chart
+
+Provides a centralized configuration for ingresses to avoid confusion on which ingress should point to which service.

charts/comet-ingress-v1/.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/

charts/comet-ingress-v1/Chart.yaml

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+apiVersion: v2
+name: comet-ingress
+description: Helm chart for Ingresses on COMET-Microservices
+type: application
+
+home: https://www.comet-dxp.com
+icon: https://avatars.githubusercontent.com/u/1012348?s=200&v=4
+
+maintainers:
+  - name: Daniel Karnutsch
+    email: daniel.karnutsch@vivid-planet.com
+  - name: Georg Schreglmann
+    email: georg.schreglmann@vivid-planet.com
+  - name: Franz Unger
+    email: franz.unger@vivid-planet.com
+  - name: Alexander Kaufmann
+    email: alexander.kaufmann@vivid-planet.com
+
+version: 0.0.0

charts/comet-ingress-v1/package.json

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+{
+    "name": "comet-ingress-v1",
+    "private": true,
+    "version": "0.0.0"
+}

charts/comet-ingress-v1/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "comet-ingress.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 "comet-ingress.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 "comet-ingress.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "comet-ingress.labels" -}}
+helm.sh/chart: {{ include "comet-ingress.chart" . }}
+{{ include "comet-ingress.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "comet-ingress.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "comet-ingress.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "comet-ingress.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "comet-ingress.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/comet-ingress-v1/templates/ingress.yaml

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+{{- range $index, $i := .Values.ingresses }}
+{{ if or (kindIs "string" $i.hostname) (gt (len $i.hostname) 0) }}
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ include "comet-ingress.fullname" $ }}-{{ $index }}
+  labels:
+    {{- include "comet-ingress.labels" $ | nindent 4 }}
+  annotations:
+    {{- range $key, $val := $.Values.annotations }}
+    {{ $key }}: {{ $val | quote }}
+    {{- end }}
+spec:
+  ingressClassName: nginx
+  rules:
+  {{- if kindIs "slice" $i.hostname }}
+  {{- range $k := $i.hostname }}
+  - host: {{ $k }}
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            {{ $i.service | toYaml | nindent 12 }}
+  {{- end }}
+  {{- else }}
+  - host: {{ $i.hostname }}
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            {{ $i.service | toYaml | nindent 12 }}
+  {{- end }}
+  tls:
+  - hosts:
+    {{- if kindIs "slice" $i.hostname }}
+    {{- range $k := $i.hostname }}
+    - {{ $k }}
+    {{- end }}
+    {{- else }}
+    - {{ $i.hostname }}
+    {{- end }}
+    secretName: {{ $i.service.name }}-cert
+{{- end }}
+{{- end }}

charts/comet-ingress-v1/values.yaml

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+# Default values for comet-ingress.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+annotations:
+  cert-manager.io/cluster-issuer: "letsencrypt"
+  nginx.ingress.kubernetes.io/proxy-buffer-size: "8k"
+
+# Example Ingress configuration:
+# ingresses:
+#   - hostname: admin.comet-dxp.com
+#     service:
+#       name: comet-oauth2-proxy
+#       port:
+#         number: 3000
+#   - hostname: preview.comet-dxp.com
+#     service:
+#       name: comet-oauth2-proxy-preview
+#       port:
+#         number: 3000
+#   - hostname: ["site.comet-dxp.com"]
+#     service:
+#       name: comet-site
+#       port:
+#         number: 3000