Add chart diffing GHA workflow #4
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| name: Diff chart changes | |
| on: | |
| pull_request: | |
| types: [opened, reopened, synchronize] | |
| concurrency: | |
| group: ${{ github.workflow }}-${{ github.repository }}-${{ github.ref_name }} | |
| cancel-in-progress: false | |
| jobs: | |
| render-charts-base: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - uses: actions/checkout@v4 | |
| with: | |
| fetch-depth: 0 | |
| ref: ${{ github.event.pull_request.base.ref }} | |
| show-progress: false | |
| - name: Run govuk-app-render | |
| run: ./govuk-app-render.sh | |
| - name: Archive rendered charts | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: rendered-charts-base | |
| path: output/ | |
| retention-days: 1 | |
| render-charts-head: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - uses: actions/checkout@v4 | |
| with: | |
| fetch-depth: 0 | |
| ref: ${{ github.event.pull_request.head.ref }} | |
| show-progress: false | |
| - name: Run govuk-app-render | |
| run: ./govuk-app-render.sh | |
| - name: Archive rendered charts | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: rendered-charts-head | |
| path: output/ | |
| retention-days: 1 | |
| diff-charts: | |
| runs-on: ubuntu-latest | |
| needs: [render-charts-base, render-charts-head] | |
| permissions: | |
| pull-requests: write | |
| steps: | |
| - uses: actions/download-artifact@v4 | |
| with: | |
| name: rendered-charts-base | |
| path: base-r/ | |
| - uses: actions/download-artifact@v4 | |
| with: | |
| name: rendered-charts-head | |
| path: head-r/ | |
| - name: Diff charts and comment on PR | |
| env: | |
| GH_TOKEN: ${{ github.token }} | |
| run: | | |
| mkdir base head | |
| mv base-r/rendered-charts/* base/ | |
| mv head-r/rendered-charts/* head/ | |
| DIFF=$(diff -r base/ head/) | |
| if [ -z "$DIFF" ]; then | |
| cat <<EOF > pr.md | |
| No changes detected in rendered charts. | |
| EOF | |
| else | |
| cat <<EOF > pr.md | |
| This PR results in the following changes to rendered charts: | |
| ```diff | |
| ${DIFF} | |
| ``` | |
| EOF | |
| fi | |
| gh pr comment "${{github.event.pull_request.html_url}}" --create-if-none --edit-last --body-file pr.md |