check_label.yml

name: Check Pull Request labels
on:
  pull_request:
    types: [opened, labeled, unlabeled, synchronize]

permissions: read-all

jobs:
  check_pull_request_labels:
    name: Check Pull Request labels
    timeout-minutes: 10
    runs-on: ubuntu-22.04
    if: github.repository == 'vitessio/vitess'
    steps:
      - name: Release Notes label
        run: |
          if [[ "${{contains( github.event.pull_request.labels.*.name, 'release notes (needs details)')}}" == "true" ]]; then
            echo The "release notes (needs details)" label is set. The changes made in this Pull Request need to be documented in the release notes summary "('./changelog/17.0/17.0.0/summary.md')". Once documented, the "release notes (needs details)" label can be removed.
            exit 1
          fi

      - name: Check type and component labels
        env:
          PR_NUMBER: ${{ github.event.pull_request.number }}
        run: |
          LABELS_JSON="/tmp/labels.json"
          # Get labels for this pull request
          curl -s \
            -H 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' \
            -H "Accept: application/vnd.github.v3+json" \
            -H "Content-type: application/json" \
            "https://api.github.com/repos/${GITHUB_REPOSITORY}/issues/${PR_NUMBER}/labels" \
            > "$LABELS_JSON"
          if ! cat ${LABELS_JSON} | jq -r '.[].name ' | grep -q 'Component:' ; then
            echo "Expecting PR to have label 'Component: ...'"
            exit 1
          fi
          if ! cat ${LABELS_JSON} | jq -r '.[].name ' | grep -q 'Type:' ; then
            echo "Expecting PR to have label 'Type: ...'"
            exit 1
          fi

      - name: Check all Needs labels are off
        env:
          PR_NUMBER: ${{ github.event.pull_request.number }}
        run: |
          LABELS_JSON="/tmp/labels.json"
          # Get labels for this pull request
          curl -s \
            -H 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' \
            -H "Accept: application/vnd.github.v3+json" \
            -H "Content-type: application/json" \
            "https://api.github.com/repos/${GITHUB_REPOSITORY}/issues/${PR_NUMBER}/labels" \
            > "$LABELS_JSON"
          if cat ${LABELS_JSON} | jq -r '.[].name ' | grep -q 'NeedsDescriptionUpdate' ; then
            echo "Expecting PR to not have the NeedsDescriptionUpdate label, please update the PR's description and remove the label."
            exit 1
          fi
          if cat ${LABELS_JSON} | jq -r '.[].name ' | grep -q 'NeedsWebsiteDocsUpdate' ; then
            echo "Expecting PR to not have the NeedsWebsiteDocsUpdate label, please update the documentation and remove the label."
            exit 1
          fi
          if cat ${LABELS_JSON} | jq -r '.[].name ' | grep -q 'NeedsIssue' ; then
            echo "Expecting PR to not have the NeedsIssue label; please create a linked issue and remove the label."
            exit 1
          fi
          if cat ${LABELS_JSON} | jq -r '.[].name ' | grep -q 'NeedsBackportReason' ; then
            if cat ${LABELS_JSON} | jq -r '.[].name ' | grep -q 'Backport to:'; then
              echo "Expecting PR to not have the NeedsBackportReason label; please add your justification to the PR description and remove the label."
              exit 1
            fi
          fi
          

      - name: Do Not Merge label
        run: |
          if [[ "${{contains( github.event.pull_request.labels.*.name, 'Do Not Merge')}}" == "true" ]]; then
            echo "This PR should not be merged. The 'Do Not Merge' label is set. Please unset it if you wish to merge this PR."
            exit 1
          fi