Helmチャート(Go Template)のループの中で上位スコープの変数を参照する方法

概要

ループの手前で変数を定義し、それを参照します。

例

まずvalues.yamlの変数を定義

repository:
  username: craftsman-software
  name: focas

branches:
  - name: main
    project: focas
    service: web
    environment: prod
  - name: prototype
    project: focas
    service: web
    environment: prototype

# ループの前で変数定義
{{ $repositoryFullName := printf "%s/%s" .Values.repository.username .Values.repository.name }}

apiVersion: triggers.tekton.dev/v1alpha1
kind: EventListener
metadata:
  name: eventlistener-focas
  namespace: focas
spec:
  serviceAccountName: focas-pipeline-sa
  triggers:
    {{- range .Values.branches }}
    - name: github-push-listener-for-{{ .name }}
      interceptors:
        - name: "only when specified branch"
          ref:
            name: cel
          params:
            - name: filter
              # ループないで事前に定義した変数を参照
              value: "body.repository.full_name in ['{{ $repositoryFullName }}']"
            - name: filter
              value: "body.ref in ['refs/heads/{{ .name }}']"
      bindings:
        - ref: pipelinebinding-focas-for-{{ .name }}
      template:
        ref: triggertemplate-focas
      {{- end }}