merge(#976): refactored Ingress chart template

Author: akijakya

charts/cloudinfo/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Cloud instance type and price information as a service
 name: cloudinfo
-version: 0.9.0
+version: 0.10.0
 
 appVersion: "0.18.0"
 

charts/cloudinfo/templates/ingress.yaml

@@ -1,6 +1,18 @@
 {{- if .Values.frontend.ingress.enabled -}}
 {{- $fullName := include "cloudinfo.frontend.fullname" . -}}
+{{- $svcPort := .Values.frontend.service.port -}}
+{{- if and .Values.frontend.ingress.className (not (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion)) }}
+  {{- if not (hasKey .Values.frontend.ingress.annotations "kubernetes.io/ingress.class") }}
+  {{- $_ := set .Values.frontend.ingress.annotations "kubernetes.io/ingress.class" .Values.frontend.ingress.className}}
+  {{- end }}
+{{- end }}
+{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
 apiVersion: networking.k8s.io/v1
+{{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1beta1
+{{- else -}}
+apiVersion: extensions/v1beta1
+{{- end }}
 kind: Ingress
 metadata:
   name: {{ $fullName }}
@@ -15,29 +27,40 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
 spec:
-  ingressClassName: {{ .Values.frontend.ingress.ingressClassName }}
-{{- if .Values.frontend.ingress.tls }}
+  {{- if and .Values.frontend.ingress.className (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }}
+  ingressClassName: {{ .Values.frontend.ingress.className }}
+  {{- end }}
+  {{- if .Values.frontend.ingress.tls }}
   tls:
-  {{- range .Values.frontend.ingress.tls }}
+    {{- range .Values.frontend.ingress.tls }}
     - hosts:
-      {{- range .hosts }}
+        {{- range .hosts }}
         - {{ . | quote }}
-      {{- end }}
+        {{- end }}
       secretName: {{ .secretName }}
+    {{- end }}
   {{- end }}
-{{- end }}
   rules:
-  {{- range .Values.frontend.ingress.hosts }}
-    {{- $url := splitList "/" . }}
-    - host: {{ first $url }}
+    {{- range .Values.frontend.ingress.hosts }}
+    - host: {{ .host | quote }}
       http:
         paths:
-          - path: /{{ rest $url | join "/" }}
-            pathType: {{ .Values.frontend.ingress.pathType }}
+          {{- range .paths }}
+          - path: {{ .path }}
+            {{- if and .pathType (semverCompare ">=1.18-0" $.Capabilities.KubeVersion.GitVersion) }}
+            pathType: {{ .pathType }}
+            {{- end }}
             backend:
+              {{- if semverCompare ">=1.19-0" $.Capabilities.KubeVersion.GitVersion }}
               service:
                 name: {{ $fullName }}
                 port:
-                  number: {{ .Values.frontend.service.port }}
-  {{- end }}
+                  number: {{ $svcPort }}
+              {{- else }}
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+              {{- end }}
+          {{- end }}
+    {{- end }}
 {{- end }}
+

charts/cloudinfo/values.yaml

@@ -25,19 +25,31 @@ frontend:
     port: 80
 
   ingress:
+    # -- Enable [ingress](https://kubernetes.io/docs/concepts/services-networking/ingress/).
     enabled: false
-    ingressClassName: traefik
+
+    # -- Ingress [class name](https://kubernetes.io/docs/concepts/services-networking/ingress/#ingress-class).
+    className: ""
+
+    # -- Annotations to be added to the ingress.
     annotations: {}
       # kubernetes.io/ingress.class: nginx
       # kubernetes.io/tls-acme: "true"
+
+    # -- Ingress host configuration.
+    # @default -- See [values.yaml](values.yaml).
     hosts:
-      - "/"
+      - host: chart-example.local
+        paths:
+          - path: /
+            pathType: ImplementationSpecific
 
+    # -- Ingress TLS configuration.
+    # @default -- See [values.yaml](values.yaml).
     tls: []
     #  - secretName: chart-example-tls
     #    hosts:
     #      - chart-example.local
-    pathType: Prefix
 
   resources: {}
     # We usually recommend not to specify default resources and to leave this as a conscious