chore: import upstream snapshot with attribution

.github/workflows/java-checkstyle.yml

@@ -0,0 +1,106 @@
+#  Copyright 2021 Collate
+#  Licensed 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: Java Checkstyle
+
+on:
+  merge_group:
+  # Trigger analysis when pushing in master or pull requests, and when creating
+  # a pull request.
+  push:
+    branches:
+      - main
+      - "0.[0-9]+.[0-9]+"
+  pull_request_target:
+    types: [opened, synchronize, reopened, labeled]
+    paths-ignore:
+      - "openmetadata-ui/src/main/resources/ui/playwright/doc-generator/**"
+      - "openmetadata-ui/src/main/resources/ui/playwright/docs/**"
+
+permissions:
+  contents: read
+
+concurrency:
+  group: java-checkstyle-${{ github.event.pull_request.number || github.run_id }}
+  cancel-in-progress: ${{ github.event_name != 'pull_request_target' || github.event.action != 'labeled' || github.event.label.name == 'safe to test' }}
+jobs:
+  java-checkstyle:
+    runs-on: ubuntu-latest
+    if: ${{ github.event_name != 'pull_request_target' || github.event.action != 'labeled' || github.event.label.name == 'safe to test' }}
+    permissions:
+      pull-requests: write
+
+    steps:
+      - name: Free Disk Space (Ubuntu)
+        uses: jlumbroso/free-disk-space@main
+        with:
+            tool-cache: false
+            android: true
+            dotnet: true
+            haskell: true
+            large-packages: false
+            swap-storage: true
+            docker-images: false
+      - name: Wait for the labeler
+        uses: lewagon/wait-on-check-action@v1.7.0
+        if: ${{ github.event_name == 'pull_request_target' }}
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          check-name: Team Label
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          wait-interval: 90
+
+      - name: Verify PR labels
+        uses: jesusvasquez333/verify-pr-label-action@v1.4.0
+        if: ${{ github.event_name == 'pull_request_target' }}
+        with:
+          github-token: '${{ secrets.GITHUB_TOKEN }}'
+          valid-labels: 'safe to test'
+          pull-request-number: '${{ github.event.pull_request.number }}'
+          disable-reviews: true  # To not auto approve changes
+
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event_name == 'merge_group' && github.sha || github.event.pull_request.head.sha }}
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Run checkstyle
+        run: mvn spotless:apply
+
+      - name: Save checkstyle outcome
+        id: git
+        continue-on-error: true
+        run: |
+          git diff-files --quiet
+
+      - name: Create a comment in the PR with the instructions
+        if: ${{ steps.git.outcome != 'success' && github.event_name == 'pull_request_target' }}
+        uses: peter-evans/create-or-update-comment@v1
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          body: |
+            **The Java checkstyle failed.**
+
+            Please run `mvn spotless:apply` in the root of your repository and commit the changes to this PR.
+            You can also use [pre-commit](https://pre-commit.com/) to automate the Java code formatting.
+
+            You can install the pre-commit hooks with `make install_test precommit_install`.
+
+      - name: Java checkstyle failed, check the comment in the PR
+        if: steps.git.outcome != 'success'
+        run: |
+          exit 1