CODEWITHSUNDEEP
gokuberneteskubernetes-helmconfigmap
Zeinab Abbasimazar
Zeinab Abbasimazar

Reputation: 10439

Represent Golang Map Objects in k8s ConfigMap Using helm

I have a map variable in golang as my config:

MyConfig map[int64][]int64 `mapstructure:"my-config"`

I tried to define this config in my helm files as follows:

Config Map:

my-config: {{ .Values.config.myconfig }}

Values:

myconfig:
  1: [2]
  2: [1]

But it rendered as:

my-config: map[1:[2] 2:[1]]

I also changed my config structure as follows:

Application:

MyConfig []MyConfigItem `mapstructure:"my-config"`

MyConfigItem struct {
    FirstPart  int64   `mapstructure:"first-part"   validate:"required"`
    SecondPart []int64 `mapstructure:"second-part"  validate:"required"`
}

Config Map:

my-config: {{ .Values.config.myconfig }}

Values:

myConfig:
  - first-part: 1
    second-part: 
      - 2
  - first-part: 2
    second-part: 
      - 1

But it rendered as:

my-config: [map[first-part:1 second-part:[2]] map[first-part:2 second-part:[1]]]

Upvotes: 1

Views: 35

Answers (1)

Zeinab Abbasimazar
Zeinab Abbasimazar

Reputation: 10439

I have found a solution for the second way. This is how I setup my config map file:

my-config: 
{{- range .Values.config.myConfig }}
  - {{ . | toYaml | indent 4 | trim }}
{{- end }}
{{- else }}
  []
{{- end }}

I found the solution here: https://stackoverflow.com/a/64830481/1626977

But applying this solution on the first mode did not result in a proper configuration. The rendered config was:

my-config:
  - "1":
    - 2
  - "2":
    - 2

The keys are string, but they should be integers.

I will search more to find out the proper solution for the first mode too; I will update the answer if I find any.

Upvotes: 0

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