helm/add iceberg rest catalog ingress for s3 (#8205)

* helm: add Iceberg REST catalog support to S3 service

* helm: add Iceberg REST catalog support to S3 service

* add ingress for iceberg catalog endpoint

* helm: conditionally render ingressClassName in s3-iceberg-ingress.yaml

* helm: refactor s3-iceberg-ingress.yaml to use named template for paths

* helm: remove unused $serviceName variable in s3-iceberg-ingress.yaml

---------

Co-authored-by: yalin.sahin <yalin.sahin@tradition.ch>
Co-authored-by: Chris Lu <chris.lu@gmail.com>

k8s/charts/seaweedfs/templates/s3/s3-iceberg-ingress.yaml

@@ -0,0 +1,61 @@
+{{- define "seaweedfs.s3.iceberg.ingress.paths" -}}
+paths:
+- path: {{ .Values.s3.icebergIngress.path | quote }}
+  pathType: {{ .Values.s3.icebergIngress.pathType | quote }}
+  backend:
+    {{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion }}
+    service:
+      name: {{ include "seaweedfs.componentName" (list . "s3") }}
+      port:
+        number: {{ .Values.s3.icebergPort }}
+    {{- else }}
+    serviceName: {{ include "seaweedfs.componentName" (list . "s3") }}
+    servicePort: {{ .Values.s3.icebergPort }}
+    {{- end }}
+{{- end -}}
+{{- if and .Values.s3.enabled .Values.s3.icebergPort .Values.s3.icebergIngress.enabled }}
+{{- $hosts := list }}
+{{- if kindIs "slice" .Values.s3.icebergIngress.host }}
+  {{- $hosts = .Values.s3.icebergIngress.host }}
+{{- else if .Values.s3.icebergIngress.host }}
+  {{- $hosts = list .Values.s3.icebergIngress.host }}
+{{- 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: ingress-{{ include "seaweedfs.fullname" . }}-s3-iceberg
+  namespace: {{ .Release.Namespace }}
+  {{- with .Values.s3.icebergIngress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  labels:
+    app.kubernetes.io/name: {{ template "seaweedfs.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/component: s3-iceberg
+spec:
+  {{- if .Values.s3.icebergIngress.className }}
+  ingressClassName: {{ .Values.s3.icebergIngress.className | quote }}
+  {{- end }}
+  tls:
+    {{ .Values.s3.icebergIngress.tls | default list | toYaml | nindent 6}}
+  rules:
+{{- if $hosts }}
+{{- range $host := $hosts }}
+  - host: {{ $host | quote }}
+    http:
+      {{- include "seaweedfs.s3.iceberg.ingress.paths" $ | nindent 6 }}
+{{- end }}
+{{- else }}
+  - http:
+      {{- include "seaweedfs.s3.iceberg.ingress.paths" . | nindent 4 }}
+{{- end }}
+{{- end }}

k8s/charts/seaweedfs/values.yaml

@@ -1053,6 +1053,15 @@ s3:
     annotations: {}
     tls: []
 
+  icebergIngress:
+    enabled: false
+    className: ""
+    host: "seaweedfs-iceberg.cluster.local"
+    path: "/"
+    pathType: Prefix
+    annotations: {}
+    tls: []
+
 sftp:
   enabled: false
   imageOverride: null