Backport CI improvements from main to 6.6

.github/ci-prerequisites-atlas.sh

@@ -0,0 +1,6 @@
+# Reclaims disk space and sanitizes user home on Atlas infrastructure
+
+# We use the GitHub cache for the relevant parts of these directories.
+# Also, we do not want to keep things like ~/.gradle/build-scan-data.
+rm -rf ~/.gradle/
+rm -rf ~/.m2/

.github/workflows/ci-report.yml

@@ -0,0 +1,78 @@
+name: GH Actions CI reporting
+
+on:
+  workflow_run:
+    workflows: [ "GH Actions CI" ]
+    types: [ completed ]
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  publish-build-scans:
+    name: Publish Develocity build scans
+    if: github.repository == 'hibernate/hibernate-orm' && github.event.workflow_run.conclusion != 'cancelled'
+    runs-on: ubuntu-latest
+    steps:
+      # Checkout target branch which has trusted code
+      - name: Check out target branch
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          ref: ${{ github.ref }}
+      - name: Set up Java 11
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '11'
+
+      - name: Generate cache key
+        id: cache-key
+        run: |
+          CURRENT_BRANCH="${{ github.repository != 'hibernate/hibernate-orm' && 'fork' || github.base_ref || github.ref_name }}"
+          CURRENT_MONTH=$(/bin/date -u "+%Y-%m")
+          CURRENT_DAY=$(/bin/date -u "+%d")
+          ROOT_CACHE_KEY="buildtool-cache"
+          echo "buildtool-monthly-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}" >> $GITHUB_OUTPUT
+          echo "buildtool-monthly-branch-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}-${CURRENT_BRANCH}" >> $GITHUB_OUTPUT
+          echo "buildtool-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}-${CURRENT_BRANCH}-${CURRENT_DAY}" >> $GITHUB_OUTPUT
+      - name: Restore Maven/Gradle Dependency/Dist Caches
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            ~/.m2/repository/
+            ~/.m2/wrapper/
+            ~/.gradle/caches/modules-2
+            ~/.gradle/wrapper/
+          key: ${{ steps.cache-key.outputs.buildtool-cache-key }}
+          restore-keys: |
+            ${{ steps.cache-key.outputs.buildtool-monthly-branch-cache-key }}-
+            ${{ steps.cache-key.outputs.buildtool-monthly-cache-key }}-
+
+      - name: Download GitHub Actions artifacts for the Develocity build scans
+        id: downloadBuildScan
+        uses: actions/download-artifact@v4
+        with:
+          pattern: build-scan-data-*
+          github-token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          run-id: ${{ github.event.workflow_run.id }}
+          path: /tmp/downloaded-build-scan-data/
+        # Don't fail the build if there are no matching artifacts
+        continue-on-error: true
+      - name: Publish Develocity build scans for previous builds
+        if: ${{ steps.downloadBuildScan.outcome != 'failure'}}
+        run: |
+          shopt -s nullglob # Don't run the loop below if there are no artifacts
+          status=0
+          mkdir -p ~/.gradle/
+          for build_scan_data_directory in /tmp/downloaded-build-scan-data/*
+          do
+            rm -rf ~/.gradle/build-scan-data
+            mv "$build_scan_data_directory" ~/.gradle/build-scan-data \
+            && ./gradlew --no-build-cache buildScanPublishPrevious || status=1
+          done
+          exit $status
+        env:
+          DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY_PR }}