flux-hr-sync.yaml

---
name: Flux HelmRepository Sync

on:
  workflow_dispatch:
    inputs:
      helmRepoNamespace:
        description: Helm Repository Namespace
        default: flux-system
        required: true
      helmRepoName:
        description: Helm Repository Name
        required: true
  pull_request:
    branches: ["master"]
    paths: ["kubernetes/**/helmrelease.yaml"]

env:
  DEBCONF_NONINTERACTIVE_SEEN: "true"
  DEBIAN_FRONTEND: noninteractive
  APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE: DontWarn

jobs:
  sync:
    name: Flux HelmRepository Sync
    runs-on: ["arc-runner-set-k8s-gitops"]
    steps:
      - name: Generate Token
        uses: actions/create-github-app-token@2986852ad836768dfea7781f31828eb3e17990fa # v1.6.2
        id: app-token
        with:
          app-id: "${{ secrets.BOT_APP_ID }}"
          private-key: "${{ secrets.BOT_APP_PRIVATE_KEY }}"

      - name: Checkout
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          token: "${{ steps.app-token.outputs.token }}"
          fetch-depth: 0

      - name: Setup Tools
        shell: bash
        run: sudo apt-get -qq update && sudo apt-get -qq install --no-install-recommends -y curl git

      - name: Setup Kube Tools
        uses: yokawasa/action-setup-kube-tools@af4ebb1af1efd30c5bd84a2e9773355ad6362a33 # v0.9.3
        with:
          setup-tools: yq

      - name: Setup Flux
        uses: fluxcd/flux2/action@9b3958825a314eb79495c6993ef397ddbf87f32f # v2.2.1

      - name: Write kubeconfig
        id: kubeconfig
        uses: timheuer/base64-to-file@784a1a4a994315802b7d8e2084e116e783d157be # v1.2.4
        with:
          encodedString: "${{ secrets.KUBECONFIG }}"
          fileName: kubeconfig

      - if: ${{ github.event.inputs.helmRepoNamespace == '' && github.event.inputs.helmRepoName == '' }}
        name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@56284d80811fb5963a972b438f2870f175e5b7c8 # v40.2.3
        with:
          files: kubernetes/**/helmrelease.yaml

      - if: ${{ github.event.inputs.helmRepoNamespace == '' && github.event.inputs.helmRepoName == '' }}
        name: Sync HelmRepository
        env:
          KUBECONFIG: "${{ steps.kubeconfig.outputs.filePath }}"
        shell: bash
        run: |
          declare -a repos=()
          for f in ${{ steps.changed-files.outputs.all_changed_and_modified_files }}; do
              repo_namespace="$(yq -r '.spec.chart.spec.sourceRef.namespace' "${f}")"
              repo_name="$(yq -r '.spec.chart.spec.sourceRef.name' "${f}")"
              repos+=("${repo_namespace}:${repo_name}")
          done
          mapfile -t repos < <(printf "%s\n" "${repos[@]}" | sort -u)
          for r in "${repos[@]}"; do
              IFS=':' read -r repo_namespace repo_name <<< "${r}"
              flux \
                  --namespace ${repo_namespace} \
                  reconcile source helm ${repo_name}
          done

      - if: ${{ github.event.inputs.helmRepoNamespace != '' && github.event.inputs.helmRepoName != '' }}
        name: Sync HelmRepository
        env:
          KUBECONFIG: ${{ steps.kubeconfig.outputs.filePath }}
        shell: bash
        run: |
          flux \
              --namespace ${{ github.event.inputs.helmRepoNamespace }} \
              reconcile source helm ${{ github.event.inputs.helmRepoName }}