[bitnami/common] Template rendering is trying to call function

[notwaf]

Name and Version

bitnami/common v2.29.0

What architecture are you using?

None

What steps will reproduce the bug?

1. use these configs:
   values.yaml

configMap:
  data:
    blah: "xcbvxcvbcbv{{ `{{ASDF}}` }}iouyyiouoiyu"

configmap.yaml

{{- $allValues := include "common.tplvalues.render" ( dict "value" ( include "common.tplvalues.merge" ( dict "values" ( list $.Values .Values $ . ) "context" $ ) ) "context" $ ) | fromYaml }}
{{- with $allValues.configMap }}
apiVersion: v1
kind: ConfigMap
metadata:
  name: blah
data:
{{ .data | toYaml | indent 2 }}
{{- end }}

2.run helm

Are you using any custom parameters or values?

No response

What is the expected behavior?

yaml should render successfully with the following output:

apiVersion: v1
kind: ConfigMap
metadata:
  name: blah
data:
  blah: "xcbvxcvbcbv{{ASDF}}iouyyiouoiyu"

What do you see instead?

template: gotpl:5: function "ASDF" not defined

Additional information

definitely could be doing something wrong, but seems odd that it breaks like this.

[javsalgar]

Hi,

Does the issue happen with this?

    blah: "xcbvxcvbcbv{{ print "{{ASDF}}" }}iouyyiouoiyu"

[notwaf]

it doesn't like the quotes, but escaping them still gives the same "not defined" error.

[notwaf]

@javsalgar also tried with printf as well and same issue.

[javsalgar]

Could you try removing the common.tplvalues.merge? I think it is being evaluated twice I would like to confirm it

[notwaf]

replaced the first line with {{- $allValues := include "common.tplvalues.render" ( dict "value" .Values "context" $ ) | fromYaml }}. did not change results and still produces the same function undefined error.

[notwaf]

don't remember this issue happening a few version ago. wondering if it is because of https://github.com/bitnami/charts/blob/main/bitnami/common/templates/_tplvalues.tpl#L15

[notwaf]

@dgomezleon @javsalgar any updates here? we are basically blocked on this issue. not sure if there is a work-around for this?

[dgomezleon]

Hi @notwaf ,

Would this work for you?

• configmap.yaml

{{- $allValues := include "common.tplvalues.render" ( dict "value" ( include "common.tplvalues.merge" ( dict "values" ( list $.Values .Values $ . ) "context" $ ) ) "context" $ ) | fromYaml }}
{{- with $allValues.configMap }}
apiVersion: v1
kind: ConfigMap
metadata:
  name: blah
data:
{{ .data | toYaml | replace "{{`" "{{"| replace "`}}" "}}" | indent 2 }}
{{- end }}

• values.yaml

configMap:
  data:
    blah: "xcbvxcvbcbv{{`ASDF`}}iouyyiouoiyu"

It produces the expected output for me.

[notwaf]

nope, no change. still produces the "function undefined" error for me

[javsalgar]

Hi,

I tried this and it worked without issues

configmap.yaml

kind: ConfigMap
metadata:
  name: blah
data:  {{- include "common.tplvalues.render" (dict "value" .Values.configMap "context" $) | nindent 2 }}

values.yaml

configMap:
  data:
    blah: "xcbvxcvbcbv{{ `{{ASDF}}` }}iouyyiouoiyu"

This provided the expected output

# Source: kafka/templates/sample.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: blah
data:
  data:
    blah: xcbvxcvbcbv{{ASDF}}iouyyiouoiyu

[notwaf]

yep, that does work if there is only a single config map manifest file. is the merge not needed to merge many different included values.yaml files together?

we have many other k8s manifests that use the render and merge templates. it still produces the same "undefined function" error.

[javsalgar]

Let me see if I understand it correctly, could you explain in more detail what you want to achieve, and how the values would look like?

Is it that you want the configMap section to be an array? Could you please provide a more thorough example that justifies the need to use tplValues.merge

[notwaf]

do realise that i forgot to mention that we use helmfile. the helmfile includes all of these values files:

---
releases:
  - name: blah
    namespace: blah
    chart: ../the-chart
    values:
      - base.yaml
      - ../../environments/{{ .Environment.Name }}.yaml
      - {{ .Environment.Name }}.yaml

the existing yaml files are still good, with a few additions:
../../environments/env.yaml
same as env/base.yaml and could have more values to merge

env.yaml

configMap:
  data:
    blah: "xcbvxcvbcbv{{ `{{ASDF}}` }}iouyyiouoiyu"

base.yaml

configMap:
  data:
    foo: iouyyiouoiyu
    merge: together

[dgomezleon]

I was able to make it work like this:

• Change from

blah: "xcbvxcvbcbv{{ `{{ASDF}}` }}iouyyiouoiyu"

to

blah: "xcbvxcvbcbv{`{ASDF}`}iouyyiouoiyu"

And using

{{- $allValues := include "common.tplvalues.render" ( dict "value" ( include "common.tplvalues.merge" ( dict "values" ( list $.Values .Values $ . ) "context" $ ) ) "context" $ ) | fromYaml }}
{{- with $allValues.configMap }}
apiVersion: v1
kind: ConfigMap
metadata:
  name: blah
data:
{{ .data | toYaml | replace "{`{" "{{"| replace "}`}" "}}" | indent 2 }}
{{- end }}

It produces the correct output for me:

$ helm template chart .
---
# Source: MyChart/templates/configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: blah
data:
  blah: xcbvxcvbcbv{{ASDF}}iouyyiouoiyu

[notwaf]

woot, that works for me as well. is this a bug in the rendering/common chart itself? or is this the expected behavior of how it is supposed to work?