feat: add ingress chart (#1)

* feat: add ingress chart

* fix: charts/application-ingress/values.yaml

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* chore: charts/application-ingress/readme.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: kharkevich

charts/application-ingress/Chart.yaml

@@ -0,0 +1,18 @@
+apiVersion: v2
+name: ingress
+version: 1.1.1
+description: A Helm chart for Ingress
+type: application
+home: https://github.com/technicaldomain/helm
+sources:
+  - https://github.com/technicaldomain/helm
+maintainers:
+  - email: alex@kharkevich.org
+    name: Alexander Kharkevich
+icon: file://icon.png
+appVersion: "1.0"
+
+dependencies:
+  - name: common
+    repository: https://technicaldomain.github.io/helm/
+    version: 2.1.4

charts/application-ingress/icon.png

@@ -0,0 +1,3 @@
+# Manage Ingress in a Simple Way
+
+See [values.yaml](./values.yaml) for more details

charts/application-ingress/readme.md

@@ -0,0 +1,65 @@
+{{- $fullName := include "common.fullname" . }}
+{{- $appLabels := include "common.labels.standard" . -}}
+{{- range .Values.services }}
+{{- $contextPath := .contextPath }}
+{{- $serviceName := .name }}
+{{- $servicePort := .port | default 80 }}
+{{- $annotations := .annotations }}
+{{- $useRewrite := .useRewrite }}
+{{- $ingressClass := .ingressClass | default $.Values.ingressClass | default "traefik" }}
+{{- /* Define default annotations */}}
+{{- $defaultAnnotations := dict }}
+{{- if eq $ingressClass "nginx" }}
+{{- $_ := set $defaultAnnotations "kubernetes.io/ingress.class" "nginx" }}
+{{- $_ := set $defaultAnnotations "nginx.ingress.kubernetes.io/service-upstream" "true" }}
+{{- $_ := set $defaultAnnotations "nginx.ingress.kubernetes.io/upstream-vhost" (printf "%s.%s.svc.cluster.local" $serviceName $.Release.Namespace) }}
+{{- $_ := set $defaultAnnotations "nginx.ingress.kubernetes.io/use-regex" "true" }}
+{{- if (default $useRewrite false) }}
+{{- $_ := set $defaultAnnotations "nginx.ingress.kubernetes.io/rewrite-target" "/$2" }}
+{{- end }}
+{{- else if eq $ingressClass "traefik" }}
+{{- $_ := set $defaultAnnotations "kubernetes.io/ingress.class" "traefik" }}
+{{- $_ := set $defaultAnnotations "traefik.ingress.kubernetes.io/router.entrypoints" "web" }}
+{{- if (default $useRewrite false) }}
+{{- $_ := set $defaultAnnotations "traefik.ingress.kubernetes.io/router.middlewares" (printf "%s-rewrite" $serviceName) }}
+{{- end }}
+{{- end }}
+
+{{- /* Merge annotations from values file, overriding defaults */}}
+{{- $mergedAnnotations := mergeOverwrite $defaultAnnotations $annotations }}
+
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ $fullName}}-{{ $serviceName }}
+  labels: {{ $appLabels | nindent 4 }}
+  annotations:
+    {{- range $key, $value := $mergedAnnotations }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
+spec:
+  tls:
+    - hosts:
+      {{- range $.Values.hosts }}
+        - {{ . | quote }}
+      {{- end }}
+      {{- if $.Values.explicitTLS }}
+      secretName: {{ $.Values.explicitTLS }}
+      {{- end }}
+  rules:
+  {{- range $.Values.hosts }}
+    - host: {{ . | quote }}
+      http:
+        paths:
+        {{- range $contextPath }}
+          - path: {{ . }}
+            pathType: Prefix
+            backend:
+              service:
+                name: {{ $serviceName }}
+                port:
+                  number: {{ $servicePort }}
+        {{- end }}
+  {{- end }}
+{{- end }}

charts/application-ingress/templates/ingress.yml

@@ -0,0 +1,36 @@
+---
+# ingressClass: nginx
+
+solution:
+  component: ingress
+
+servicePort: 80
+
+hosts: []
+  # - "cluster.example.com"
+
+explicitTLS:
+
+services: {}
+  # - name: serviceA
+  #   port: 8081
+  #   useRewrite: true
+  #   contextPath:
+  #     - /
+  # - name: serviceB
+  #   ingressClass: nginx
+  #   annotations:
+  #     nginx.ingress.kubernetes.io/proxy-body-size: 100m
+  #     nginx.ingress.kubernetes.io/use-regex: "false"
+  #   contextPath:
+  #     - /serviceB
+
+# use rewrites
+# useRewrite: true
+# services:
+#   - name: frontend
+#     contextPath:
+#       - ()(/.*)
+#   - name: api
+#     contextPath:
+#       - (/api)(/.*)