I want to generate complex JSON with HELM template
I have a template:
apiVersion: v1
kind: ConfigMap
metadata:
name: test
data:
config.json: |
{
"test": "{{ $Value }}",
"services": {
{{- range $k, $v := $.Values.services }}
"{{ $k | upper }}_PATH": "{{ $k }}",
{{- end }}
}
}
Helm chars generates json:
{
"test": "test",
"services": {
"S1_PATH": "/t1",
"S2_PATH": "/t2",
"S2_PATH": "/t3",
}
}
Problem is that JSON is not valid as it has a trailing comma. How to update the template to resolve this?
Maybe I dont undersood your question correctly, but to avoid trailing comma, you should remove it from your template. Plus I see you should use .Values.services instead of $.Values.services
template:
apiVersion: v1
kind: ConfigMap
metadata:
name: test
data:
config.json: |
{
"services": {
{{- range $k, $v := .Values.services }}
"{{ $k | upper }}_PATH": "{{ $k }}"
{{- end }}
}
}
result:
apiVersion: v1
kind: ConfigMap
metadata:
name: test
data:
config.json: |
{
"services": {
"S1_PATH": "s1"
"S2_PATH": "s2"
"S3_PATH": "s3"
}
}
If this i snot you expected - please add more info in your question.
If you update the template like this, it should work.
apiVersion: v1
kind: ConfigMap
metadata:
name: test
data:
config.json: |
{
"test": "{{ $Value }}",
"services": {
{{- range $k, $v := $.Values.services }}
{{ if ne $k 0 }},{{ end }}
"{{ $k | upper }}_PATH": "{{ $k }}"
{{- end }}
}
}
For the first service (index is 0) it does not place a comma and for all others it places one in front.