I'm trying to check if my path value is unique. This is my value.yml example:
ingresses:
- name: ingress-1
path: /route2
host: example.com
- name: ingress-2
path: /route2
host: example.comIn this example I want to exclude or concatenate the second route. This is my ingress.yml template:
{{- range $ingress := .Values.ingresses -}}
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: sampleName
labels:
app: sampleName
deploymentStrategy: sampleStrategy
spec:
rules:
- host: "{{ $ingress.host }}"
http:
paths:
- backend:
serviceName: SampleName
servicePort: 80
path: /sampleApp/{{ $ingress.path }}
---
{{- end -}}I'm in range context, so I can't check another ingresses. Do you have any idea how to do this
Since (as you note) you can't enforce uniqueness across multiple Ingress objects, I'd probably accept that "one service declares the same endpoint" is just a specific case of "the same endpoint can be declared multiple times" and do nothing.
Helm templates have access to a support library called Sprig that allows some more general-purpose data structures. If you just want to check that there aren't duplicates, you can use a dictionary:
{{- $paths := dict -}}
{{- range $ingress := .Values.ingresses -}}
{{- if hasKey $paths $ingress.path -}}
{{- printf "Duplicate ingress path %s" $ingress.path | fail -}}
{{- else -}}
{{- $_ := set $paths $ingress.path $ingress.path -}}
{{- end -}}
{{- end -}}You can use a similar approach to only emit the first Ingress object that has a given path (don't fail if the key exists, do include the template for it immediately after the set).