devops: add cherry-pick bot (#16419)

.github/workflows/cherry_pick_into_release_branch.yml

@@ -0,0 +1,77 @@
+name: Cherry-pick into release branch
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        type: string
+        description: Version number, e.g. 1.25
+        required: true
+      commit_hashes:
+        type: string
+        description: Comma-separated list of commit hashes to cherry-pick
+        required: true
+
+jobs:
+  roll:
+    runs-on: ubuntu-22.04
+    steps:
+    - name: Validate input version number
+      run: |
+        VERSION="${{ github.event.inputs.version }}"
+        if ! [[ "$VERSION" =~ ^[0-9]+\.[0-9]+$ ]]; then
+          echo "Version is not a two digit semver version"
+          exit 1
+        fi
+    - uses: actions/checkout@v2
+      with:
+        ref: release-${{ github.event.inputs.version }}
+        fetch-depth: 0
+    - name: Cherry-pick commits
+      run: |
+        for COMMIT_HASH in $(echo "${{ github.event.inputs.commit_hashes }}" | tr "," "\n"); do
+          git cherry-pick --no-commit "$COMMIT_HASH"
+
+          COMMIT_MESSAGE=$(node -e '
+          console.log(process.argv[1])
+          const match = /^(.*) (\(#\d+\))$/.exec(process.argv[1]);
+          if (!match) {
+            console.log(process.argv[1]);
+            process.exit(0);
+          }
+          console.log(`chery-pick${match[2]}: ${match[1]}`);
+          ' $(git show -s --format=%B $COMMIT_HASH))
+
+          git commit -m "$COMMIT_MESSAGE"
+        done
+        LAST_COMMIT_MESSAGE=$(git show -s --format=%B)
+        echo "::set-output name=PR_TITLE::$LAST_COMMIT_MESSAGE"
+    - name: Prepare branch
+      id: prepare-branch
+      run: |
+        BRANCH_NAME="cherry-pick-${{ github.event.inputs.version }}-$(date +%Y-%m-%d-%H-%M-%S)"
+        echo "::set-output name=BRANCH_NAME::$BRANCH_NAME"
+        git config --global user.name github-actions
+        git config --global user.email 41898282+github-actions[bot]@users.noreply.github.com
+        git checkout -b "$BRANCH_NAME"
+        git push origin $BRANCH_NAME
+    - name: Create Pull Request
+      uses: actions/github-script@v6
+      with:
+        github-token: ${{ secrets.GH_SERVICE_ACCOUNT_TOKEN }}
+        script: |
+          const readableCommitHashesList = '${{ github.event.inputs.commit_hashes }}'.split(',').map(hash => `- ${hash}`).join('\n');
+          const response = await github.pulls.create({
+            owner: 'microsoft',
+            repo: 'playwright',
+            head: 'microsoft:${{ steps.prepare-branch.outputs.BRANCH_NAME }}',
+            base: 'main',
+            title: '${{ steps.prepare-branch.outputs.PR_TITLE }}',
+            body: `This PR cherry-picks the following commits:\n\n${readableCommitHashesList}`,
+          });
+          await github.issues.addLabels({
+            owner: 'microsoft',
+            repo: 'playwright',
+            issue_number: response.data.number,
+            labels: ['CQ1'],
+          });

.github/workflows/roll_browser_into_playwright.yml

@@ -24,7 +24,6 @@ jobs:
     - name: Prepare branch
       id: prepare-branch
       run: |
-        BASE_POSITION="${{ steps.bump-chromium.outputs.BASE_POSITION }}"
         BRANCH_NAME="roll-into-pw-${{ github.event.client_payload.browser }}/${{ github.event.client_payload.revision }}"
         echo "::set-output name=BRANCH_NAME::$BRANCH_NAME"
         git config --global user.name github-actions