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{{/*
# Copyright © 2019-2021 Orange, Samsung
# Copyright © 2022 Deutsche Telekom
#
# 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.
*/}}
{{/*
Create the hostname as concatination <baseaddr>.<baseurl>
- baseaddr: from component values: ingress.service.baseaddr
- baseurl: from values: global.ingress.virtualhost.baseurl
which van be overwritten in the component via: ingress.baseurlOverride
*/}}
{{- define "ingress.config.host" -}}
{{- $dot := default . .dot -}}
{{- $baseaddr := (required "'baseaddr' param, set to the specific part of the fqdn, is required." .baseaddr) -}}
{{- $burl := (required "'baseurl' param, set to the generic part of the fqdn, is required." $dot.Values.global.ingress.virtualhost.baseurl) -}}
{{- $burl := include "common.ingress._overrideIfDefined" (dict "currVal" $burl "parent" (default (dict) $dot.Values.ingress) "var" "baseurlOverride") -}}
{{ printf "%s.%s" $baseaddr $burl }}
{{- end -}}
{{/*
Helper function to add the tls route
*/}}
{{- define "ingress.config.tls" -}}
{{- $dot := default . .dot -}}
{{- $baseaddr := (required "'baseaddr' param, set to the specific part of the fqdn, is required." .baseaddr) -}}
{{- if $dot.Values.global.ingress.config }}
{{- if $dot.Values.global.ingress.config.ssl }}
{{- if eq $dot.Values.global.ingress.config.ssl "redirect" }}
tls:
httpsRedirect: true
- port:
number: 443
name: https
protocol: HTTPS
tls:
{{- if $dot.Values.global.ingress.config }}
{{- if $dot.Values.global.ingress.config.tls }}
credentialName: {{ default "ingress-tls-secret" $dot.Values.global.ingress.config.tls.secret }}
{{- else }}
credentialName: "ingress-tls-secret"
{{- end }}
{{- else }}
credentialName: "ingress-tls-secret"
{{- end }}
mode: SIMPLE
hosts:
- {{ include "ingress.config.host" (dict "dot" $dot "baseaddr" $baseaddr) }}
{{- end }}
{{- end }}
{{- end }}
{{- end -}}
{{/*
Helper function to add the route to the service
*/}}
{{- define "ingress.config.port" -}}
{{- $dot := default . .dot -}}
{{ range .Values.ingress.service }}
{{- $baseaddr := (required "'baseaddr' param, set to the specific part of the fqdn, is required." .baseaddr) }}
- host: {{ include "ingress.config.host" (dict "dot" $dot "baseaddr" $baseaddr) }}
http:
paths:
- backend:
service:
name: {{ .name }}
port:
{{- if kindIs "string" .port }}
name: {{ .port }}
{{- else }}
number: {{ .port }}
{{- end }}
{{- if .path }}
path: {{ .path }}
{{- end }}
pathType: ImplementationSpecific
{{- end }}
{{- end -}}
{{/*
Helper function to add the route to the service
*/}}
{{- define "istio.config.route" -}}
{{- $dot := default . .dot -}}
http:
- route:
- destination:
port:
{{- if .plain_port }}
{{- if kindIs "string" .plain_port }}
name: {{ .plain_port }}
{{- else }}
number: {{ .plain_port }}
{{- end }}
{{- else }}
{{- if kindIs "string" .port }}
name: {{ .port }}
{{- else }}
number: {{ .port }}
{{- end }}
{{- end }}
host: {{ .name }}
{{- end -}}
{{/*
Helper function to add ssl annotations
*/}}
{{- define "ingress.config.annotations.ssl" -}}
{{- if .Values.ingress.config -}}
{{- if .Values.ingress.config.ssl -}}
{{- if eq .Values.ingress.config.ssl "redirect" -}}
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/ssl-passthrough: "true"
nginx.ingress.kubernetes.io/ssl-redirect: "true"
{{- else if eq .Values.ingress.config.ssl "native" -}}
nginx.ingress.kubernetes.io/ssl-redirect: "true"
{{- else if eq .Values.ingress.config.ssl "none" -}}
nginx.ingress.kubernetes.io/ssl-redirect: "false"
{{- end -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{/*
Helper function to add annotations
*/}}
{{- define "ingress.config.annotations" -}}
{{- if .Values.ingress -}}
{{- if .Values.ingress.annotations -}}
{{ toYaml .Values.ingress.annotations | indent 4 | trim }}
{{- end -}}
{{- end -}}
{{ include "ingress.config.annotations.ssl" . | indent 4 | trim }}
{{- end -}}
{{/*
Helper function to check the existance of an override value
*/}}
{{- define "common.ingress._overrideIfDefined" -}}
{{- $currValue := .currVal }}
{{- $parent := .parent }}
{{- $var := .var }}
{{- if $parent -}}
{{- if hasKey $parent $var }}
{{- default "" (index $parent $var) }}
{{- else -}}
{{- default "" $currValue -}}
{{- end -}}
{{- else -}}
{{- default "" $currValue }}
{{- end -}}
{{- end -}}
{{/*
Helper function to check, if Ingress is enabled
*/}}
{{- define "common.ingress._enabled" -}}
{{- $dot := default . .dot -}}
{{- if $dot.Values.ingress -}}
{{- if $dot.Values.global.ingress -}}
{{- if (default false $dot.Values.global.ingress.enabled) -}}
{{- if (default false $dot.Values.global.ingress.enable_all) -}}
true
{{- else -}}
{{- if $dot.Values.ingress.enabled -}}
true
{{- end -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{/*
Create Istio Ingress resources per defined service
*/}}
{{- define "common.istioIngress" -}}
{{- $dot := default . .dot -}}
{{ range $dot.Values.ingress.service }}
{{- $baseaddr := (required "'baseaddr' param, set to the specific part of the fqdn, is required." .baseaddr) }}
---
apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
name: {{ $baseaddr }}-gateway
spec:
selector:
istio: ingressgateway # use Istio default gateway implementation
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- {{ include "ingress.config.host" (dict "dot" $dot "baseaddr" $baseaddr) }}
{{ include "ingress.config.tls" (dict "dot" $dot "baseaddr" $baseaddr) }}
---
apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
name: {{ $baseaddr }}-service
spec:
hosts:
- {{ include "ingress.config.host" (dict "dot" $dot "baseaddr" $baseaddr) }}
gateways:
- {{ $baseaddr }}-gateway
{{ include "istio.config.route" . | trim }}
{{- end -}}
{{- end -}}
{{/*
Create default Ingress resource
*/}}
{{- define "common.nginxIngress" -}}
{{- $dot := default . .dot -}}
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: {{ include "common.fullname" $dot }}-ingress
annotations:
{{ include "ingress.config.annotations" $dot }}
labels:
app: {{ $dot.Chart.Name }}
chart: {{ $dot.Chart.Name }}-{{ $dot.Chart.Version | replace "+" "_" }}
release: {{ include "common.release" $dot }}
heritage: {{ $dot.Release.Service }}
spec:
rules:
{{ include "ingress.config.port" $dot | trim }}
{{- if $dot.Values.ingress.tls }}
tls:
{{ toYaml $dot.Values.ingress.tls | indent 4 }}
{{- end -}}
{{- if $dot.Values.ingress.config -}}
{{- if $dot.Values.ingress.config.tls -}}
tls:
- hosts:
{{- range $dot.Values.ingress.service }}{{ $baseaddr := required "baseaddr" .baseaddr }}
- {{ include "ingress.config.host" (dict "dot" $dot "baseaddr" $baseaddr) }}
{{- end }}
secretName: {{ required "secret" (tpl (default "" $dot.Values.ingress.config.tls.secret) $dot) }}
{{- end -}}
{{- end -}}
{{- end -}}
{{/*
Create ingress template
Will create ingress template depending on the following values:
- .Values.global.ingress.enabled : enables Ingress globally
- .Values.global.ingress.enable_all : override default Ingress for all charts
- .Values.ingress.enabled : sets Ingress per chart basis
| global.ingress.enabled | global.ingress.enable_all |ingress.enabled | result |
|------------------------|---------------------------|----------------|------------|
| false | any | any | no ingress |
| true | false | false | no ingress |
| true | true | any | ingress |
| true | false | true | ingress |
If ServiceMesh (Istio) is enabled the respective resources are created:
- Gateway
- VirtualService
If ServiceMesh is disabled the standard Ingress resource is creates:
- Ingress
*/}}
{{- define "common.ingress" -}}
{{- $dot := default . .dot -}}
{{- if (include "common.ingress._enabled" (dict "dot" $dot)) }}
{{- if (include "common.onServiceMesh" .) }}
{{- if eq (default "istio" .Values.global.serviceMesh.engine) "istio" }}
{{ include "common.istioIngress" (dict "dot" $dot) }}
{{- end -}}
{{- else -}}
{{ include "common.nginxIngress" (dict "dot" $dot) }}
{{- end -}}
{{- end -}}
{{- end -}}
|
