flux-hr-sync.yaml

---
name: "Flux Helm Repository Sync"

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

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

jobs:
  sync:
    name: Flux Helm Repository Sync
    runs-on: ["arc-runner-set-home-ops"]
    steps:
      - name: Checkout
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          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@53ad742e2d0f6f0df19ec11a25a0e3adce80c475 # v2.2.0

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

      - if: ${{ github.event.inputs.clusterName == '' && github.event.inputs.helmRepoNamespace == '' && github.event.inputs.helmRepoName == '' }}
        name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@94549999469dbfa032becf298d95c87a14c34394 # v40.2.2
        with:
          files: kubernetes/**/helmrelease.yaml

      - if: ${{ github.event.inputs.clusterName == '' && github.event.inputs.helmRepoNamespace == '' && github.event.inputs.helmRepoName == '' }}
        name: Sync Helm Repository
        env:
          KUBECONFIG: "${{ steps.kubeconfig.outputs.filePath }}"
        shell: bash
        run: |
          declare -a repos=()
          for f in ${{ steps.changed-files.outputs.all_changed_and_modified_files }}; do
              cluster_name=$(echo "${f}" | awk -F'/' '{print $2}')
              repo_namespace="$(yq '.spec.chart.spec.sourceRef.namespace' "${f}")"
              repo_name="$(yq '.spec.chart.spec.sourceRef.name' "${f}")"
              repos+=("${cluster_name}:${repo_namespace}:${repo_name}")
          done
          mapfile -t repos < <(printf "%s\n" "${repos[@]}" | sort -u)
          for r in "${repos[@]}"; do
              IFS=':' read -r cluster_name repo_namespace repo_name <<< "${r}"
              flux \
                  --context "${cluster_name}" \
                  --namespace "${repo_namespace}" \
                  reconcile source helm "${repo_name}"
          done

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