.github/workflows/check-protected-classes.yml

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

name: Protected Classes

on: pull_request_target

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  check-protected-classes:
    runs-on: ubuntu-latest
    name: Rolling Upgrade check
    permissions:
      issues: write
      pull-requests: write
      checks: write
    steps:
      - uses: actions/checkout@v6
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 0

      - name: Rolling Upgrade check
        id: check
        run: |
          BASE_SHA=${{ github.event.pull_request.base.sha }}
          HEAD_SHA=${{ github.event.pull_request.head.sha }}
          ANNOTATION='org.apache.ignite.internal.Order'
          HITS_FILE=/tmp/protected-hits.txt

          # Added/deleted/modified .java files in the PR as "<status>\t<path>" lines.
          changed_java_files() {
            git diff --name-status --no-renames --diff-filter=ADM "$BASE_SHA"..."$HEAD_SHA" -- '*.java'
          }

          # A protected class carries the @Order annotation; an added file is
          # defined by the new revision, a deleted/modified one by the base.
          is_protected_class() {
            local status=$1 file=$2 ref=$BASE_SHA
            [ "$status" = A ] && ref=$HEAD_SHA
            git show "$ref:$file" 2>/dev/null | grep -q "$ANNOTATION"
          }

          # Read "<status>\t<path>" lines, emit the paths that are protected.
          filter_protected() {
            while IFS=$'\t' read -r status file; do
              if is_protected_class "$status" "$file"; then
                echo "$file"
              fi
            done
          }

          changed_java_files | filter_protected > "$HITS_FILE"

          if [ -s "$HITS_FILE" ]; then
            echo "affected=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Comment on PR
        if: steps.check.outputs.affected == 'true'
        uses: actions/github-script@v8
        with:
          script: |
            const fs = require('fs');
            const hits = fs.readFileSync('/tmp/protected-hits.txt', 'utf8').trim();
            const body = [
              '## Possible compatibility issues. Please, check rolling upgrade cases',
              '',
              'This PR modifies protected classes (with **Order** annotation).',
              'Changes to these classes can break rolling upgrade compatibility.',
              '',
              '**Affected files:**',
              hits.split('\n').map(f => '- `' + f.trim() + '`').join('\n'),
              '',
            ].join('\n');

            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });

            const existing = comments.find(c => c.body.includes('Possible compatibility issues. Please, check rolling upgrade cases'));

            if (existing) {
              await github.rest.issues.deleteComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
              });
            }

            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body,
            });

      - name: Add label
        if: steps.check.outputs.affected == 'true'
        uses: actions/github-script@v8
        with:
          script: |
            await github.rest.issues.addLabels({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              labels: ['compatibility'],
            });

      - name: Warning check on affected
        if: steps.check.outputs.affected == 'true'
        uses: actions/github-script@v8
        with:
          script: |
            const fs = require('fs');
            const hits = fs.readFileSync('/tmp/protected-hits.txt', 'utf8').trim();
            await github.rest.checks.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              name: 'Rolling upgrade compatibility',
              head_sha: context.payload.pull_request.head.sha,
              status: 'completed',
              conclusion: 'neutral',
              output: {
                title: 'Possible compatibility issues',
                summary: [
                  'This PR modifies protected classes (with **Order** annotation).',
                  'Changes to these classes can break rolling upgrade compatibility.',
                  '',
                  '**Affected files:**',
                  hits.split('\n').map(f => '- `' + f.trim() + '`').join('\n'),
                ].join('\n'),
              },
            });