validate-cilium-chart.yaml

name: Validate Cilium Helm chart

on:
  pull_request: {}
  push:
    branches:
      - master

jobs:
  validate:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - name: Checkout code
        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
        with:
          fetch-depth: 0
          persist-credentials: false

      - name: Set up job variables
        id: vars
        run: |
          # Get last commit message
          readonly local last_commit_log=$(git log -1 --grep "^Add cilium" --pretty=format:"%s")
          echo "last commit log: $last_commit_log"

          readonly local chart_version=$(echo "$last_commit_log" | grep -Eo "Add cilium v[^@]+" | sed 's/Add\ cilium\ v//' )
          echo "Helm chart detected version: '${chart_version}'"

          if [[ -n "${chart_version}" ]]; then
            if [ "${{ github.event_name }}" = "pull_request" ] ; then
              # Use the local chart file for pull requests.
              echo "chartPath=cilium-${chart_version}.tgz" >> $GITHUB_OUTPUT
            else
              # Download the chart from the Helm repository on push.
              helm repo add cilium https://helm.cilium.io
              helm repo update
              mkdir tmp
              until helm pull cilium/cilium -d tmp --version "${chart_version}"
              do
                echo "helm pull failed. Retrying..."
                sleep 1
                helm repo update
              done
              echo "chartPath=tmp/cilium-${chart_version}.tgz" >> $GITHUB_OUTPUT
            fi
          fi

      - name: Validate Helm chart
        if: ${{ steps.vars.outputs.chartPath != '' }}
        run: |
          ./validate_helm_chart.sh ${{ steps.vars.outputs.chartPath }}