Add support to basic ingress controller

Ingress controller support for the stardog helm chart. (Issue #79)

charts/stardog/templates/ingress.yaml

@@ -0,0 +1,65 @@
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "stardog.fullname" . -}}
+{{- $httpPort := .Values.ports.server -}}
+{{- $pathtype := .Values.ingress.pathtype -}}
+{{- $ingressPath := .Values.ingress.path -}}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ $fullName }}-ingress
+  namespace: {{ include "stardog.namespace" . }}
+  labels:
+    app: {{ .Chart.Name }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+{{- with .Values.ingress.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+  {{- if .Values.ingress.className }}
+  ingressClassName: {{ .Values.ingress.className | quote }}
+  {{- end }}
+{{- if .Values.ingress.tls }}
+  tls:
+  {{- if .ingressPath }}
+  {{- range  .Values.ingress.tls }}
+  - hosts:
+    {{- range  .hosts }}
+      - {{ . }}
+    {{- end }}
+    secretName: {{ .secretName }}
+  {{- end }}
+{{- else }}
+{{ toYaml .Values.ingress.tls | indent 4 }}
+  {{- end }}
+{{- end}}
+  rules:
+  {{- range .Values.ingress.hosts }}
+    {{- if $ingressPath }}
+  - host: {{ . }}
+    http:
+      paths:
+      - path: {{ $ingressPath }}
+        pathType: {{ $pathtype }}
+        backend:
+          service:
+            name: {{ $fullName }}
+            port:
+              number: {{ $httpPort }}
+  {{- else }}
+  - host: {{ .host }}
+    http:
+      paths:
+      {{- range .paths }}
+      - path: {{ .path }}
+        pathType: {{ $pathtype }}
+        backend:
+          service:
+            name: {{ $fullName }}
+            port:
+              number: {{ $httpPort }}
+      {{- end }}
+  {{- end }}
+ {{- end }}
+ {{- end }}

charts/stardog/values.yaml

@@ -171,3 +171,21 @@ zookeeper:
 #    failureThreshold: 6
 #    successThreshold: 1
 #    probeCommandTimeout: 2
+
+# Settings for enable ingress controller. 
+ingress:
+  enabled: false
+  annotations: {}
+  # nginx.ingress.kubernetes.io/use-regex: "true"
+  # nginx.ingress.kubernetes.io/app-root: "/admin/alive"
+  # kubernetes.io/tls-acme: "true" 
+  #className: "nginx" 
+  #pathtype: Prefix
+  hosts: []
+    # - host: chart-example.local
+    #   paths:
+    #     - path: /
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local