openstack-helm-infra/helm-toolkit/templates/manifests/_ingress.tpl

{{/*
Copyright 2017 The Openstack-Helm Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}

{{/*
abstract: |
  Creates a manifest for a services ingress rules.
values: |
  network:
    api:
      ingress:
        public: true
        classes:
          namespace: "nginx"
          cluster: "nginx-cluster"
        annotations:
          nginx.ingress.kubernetes.io/rewrite-target: /
  secrets:
    tls:
      key_manager:
        api:
          public: barbican-tls-public
  endpoints:
    cluster_domain_suffix: cluster.local
    key_manager:
      name: barbican
      hosts:
        default: barbican-api
        public: barbican
      host_fqdn_override:
        default: null
        public:
          host: barbican.openstackhelm.example
          tls:
            crt: |
              FOO-CRT
            key: |
              FOO-KEY
            ca: |
              FOO-CA_CRT
      path:
        default: /
      scheme:
        default: http
        public: https
      port:
        api:
          default: 9311
          public: 80
usage: |
  {{- include "helm-toolkit.manifests.ingress" ( dict "envAll" . "backendServiceType" "key-manager" "backendPort" "b-api" ) -}}
return: |
  ---
  apiVersion: extensions/v1beta1
  kind: Ingress
  metadata:
    name: barbican
    annotations:
      kubernetes.io/ingress.class: "nginx"
      nginx.ingress.kubernetes.io/rewrite-target: /

  spec:
    rules:
      - host: barbican
        http:
          paths:
            - path: /
              backend:
                serviceName: barbican-api
                servicePort: b-api
      - host: barbican.default
        http:
          paths:
            - path: /
              backend:
                serviceName: barbican-api
                servicePort: b-api
      - host: barbican.default.svc.cluster.local
        http:
          paths:
            - path: /
              backend:
                serviceName: barbican-api
                servicePort: b-api
  ---
  apiVersion: extensions/v1beta1
  kind: Ingress
  metadata:
    name: barbican-namespace-fqdn
    annotations:
      kubernetes.io/ingress.class: "nginx"
      nginx.ingress.kubernetes.io/rewrite-target: /

  spec:
    tls:
      - secretName: barbican-tls-public
        hosts:
          - barbican.openstackhelm.example
    rules:
      - host: barbican.openstackhelm.example
        http:
          paths:
            - path: /
              backend:
                serviceName: barbican-api
                servicePort: b-api
  ---
  apiVersion: extensions/v1beta1
  kind: Ingress
  metadata:
    name: barbican-cluster-fqdn
    annotations:
      kubernetes.io/ingress.class: "nginx-cluster"
      nginx.ingress.kubernetes.io/rewrite-target: /

  spec:
    tls:
      - secretName: barbican-tls-public
        hosts:
          - barbican.openstackhelm.example
    rules:
      - host: barbican.openstackhelm.example
        http:
          paths:
            - path: /
              backend:
                serviceName: barbican-api
                servicePort: b-api
*/}}

{{- define "helm-toolkit.manifests.ingress._host_rules" -}}
{{- $vHost := index . "vHost" -}}
{{- $backendName := index . "backendName" -}}
{{- $backendPort := index . "backendPort" -}}
- host: {{ $vHost }}
  http:
    paths:
      - path: /
        backend:
          serviceName: {{ $backendName }}
          servicePort: {{ $backendPort }}
{{- end }}

{{- define "helm-toolkit.manifests.ingress" -}}
{{- $envAll := index . "envAll" -}}
{{- $backendService := index . "backendService" | default "api" -}}
{{- $backendServiceType := index . "backendServiceType" -}}
{{- $backendPort := index . "backendPort" -}}
{{- $ingressName := tuple $backendServiceType "public" $envAll | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
{{- $backendName := tuple $backendServiceType "internal" $envAll | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
{{- $hostName := tuple $backendServiceType "public" $envAll | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
{{- $hostNameFull := tuple $backendServiceType "public" $envAll | include "helm-toolkit.endpoints.hostname_fqdn_endpoint_lookup" }}
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: {{ $ingressName }}
  annotations:
    kubernetes.io/ingress.class: {{ index $envAll.Values.network $backendService "ingress" "classes" "namespace" | quote }}
{{ toYaml (index $envAll.Values.network $backendService "ingress" "annotations") | indent 4 }}
spec:
  rules:
{{- range $key1, $vHost := tuple $hostName (printf "%s.%s" $hostName $envAll.Release.Namespace) (printf "%s.%s.svc.%s" $hostName $envAll.Release.Namespace $envAll.Values.endpoints.cluster_domain_suffix)}}
{{- $hostRules := dict "vHost" $vHost "backendName" $backendName "backendPort" $backendPort }}
{{ $hostRules | include "helm-toolkit.manifests.ingress._host_rules" | indent 4}}
{{- end }}
{{- if not ( hasSuffix ( printf ".%s.svc.%s" $envAll.Release.Namespace $envAll.Values.endpoints.cluster_domain_suffix) $hostNameFull) }}
{{- range $key2, $ingressController := tuple "namespace" "cluster" }}
{{- $hostNameFullRules := dict "vHost" $hostNameFull "backendName" $backendName "backendPort" $backendPort }}
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: {{ printf "%s-%s-%s" $ingressName $ingressController "fqdn" }}
  annotations:
    kubernetes.io/ingress.class: {{ index $envAll.Values.network $backendService "ingress" "classes" $ingressController | quote }}
{{ toYaml (index $envAll.Values.network $backendService "ingress" "annotations") | indent 4 }}
spec:
{{- $host := index $envAll.Values.endpoints ( $backendServiceType | replace "-" "_" ) "host_fqdn_override" }}
{{- if hasKey $host "public" }}
{{- if kindIs "map" $host.public }}
{{- if hasKey $host.public "tls" }}
{{- if and $host.public.tls.key $host.public.tls.crt }}
  tls:
    - secretName: {{ index $envAll.Values.secrets "tls" ( $backendServiceType | replace "-" "_" ) $backendService "public" }}
      hosts:
        - {{ index $hostNameFullRules "vHost" }}
{{- end }}
{{- end }}
{{- end }}
{{- end }}
  rules:
{{ $hostNameFullRules | include "helm-toolkit.manifests.ingress._host_rules" | indent 4}}
{{- end }}
{{- end }}
{{- end }}