Cleanup gh-pages History #6
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| name: Cleanup gh-pages History | |
| on: | |
| schedule: | |
| # Run on the 1st of every month at 3:00 AM UTC | |
| - cron: '0 3 1 * *' | |
| workflow_dispatch: | |
| inputs: | |
| keep_days: | |
| description: 'Keep commits from last N days (default: 30)' | |
| required: false | |
| type: number | |
| default: 30 | |
| dry_run: | |
| description: 'Dry run (show what would be done without pushing)' | |
| required: false | |
| type: boolean | |
| default: false | |
| permissions: | |
| contents: write | |
| jobs: | |
| cleanup: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Checkout gh-pages | |
| uses: actions/checkout@v4 | |
| with: | |
| ref: gh-pages | |
| fetch-depth: 0 # Full history needed for squashing | |
| - name: Cleanup old history | |
| shell: bash | |
| run: | | |
| set -e | |
| KEEP_DAYS="${{ github.event.inputs.keep_days || 30 }}" | |
| DRY_RUN="${{ github.event.inputs.dry_run || 'false' }}" | |
| echo "=== gh-pages History Cleanup ===" | |
| echo "Keep commits from last: ${KEEP_DAYS} days" | |
| echo "Dry run: ${DRY_RUN}" | |
| echo "" | |
| # Get current branch info | |
| CURRENT_COMMITS=$(git rev-list --count HEAD) | |
| CURRENT_SIZE=$(du -sh .git | cut -f1) | |
| echo "Current state:" | |
| echo " Commits: ${CURRENT_COMMITS}" | |
| echo " .git size: ${CURRENT_SIZE}" | |
| echo "" | |
| # Find the cutoff date | |
| CUTOFF_DATE=$(date -d "-${KEEP_DAYS} days" +%Y-%m-%d 2>/dev/null || date -v-${KEEP_DAYS}d +%Y-%m-%d) | |
| echo "Cutoff date: ${CUTOFF_DATE}" | |
| # Find commits to keep (after cutoff date) | |
| COMMITS_TO_KEEP=$(git rev-list --after="${CUTOFF_DATE}" HEAD | wc -l | tr -d ' ') | |
| echo "Commits after cutoff: ${COMMITS_TO_KEEP}" | |
| if [ "${COMMITS_TO_KEEP}" -eq 0 ]; then | |
| echo "No recent commits found, keeping at least the latest commit" | |
| COMMITS_TO_KEEP=1 | |
| fi | |
| # If we have very few commits, nothing to clean | |
| if [ "${CURRENT_COMMITS}" -le "${COMMITS_TO_KEEP}" ]; then | |
| echo "" | |
| echo "Nothing to clean up - all commits are within retention period" | |
| exit 0 | |
| fi | |
| COMMITS_TO_SQUASH=$((CURRENT_COMMITS - COMMITS_TO_KEEP)) | |
| echo "Commits to squash: ${COMMITS_TO_SQUASH}" | |
| echo "" | |
| # Show what will be removed | |
| echo "=== Commits to be squashed ===" | |
| git log --oneline --skip=${COMMITS_TO_KEEP} -20 || true | |
| if [ "${COMMITS_TO_SQUASH}" -gt 20 ]; then | |
| echo "... and $((COMMITS_TO_SQUASH - 20)) more" | |
| fi | |
| echo "" | |
| if [ "${DRY_RUN}" = "true" ]; then | |
| echo "=== DRY RUN - No changes made ===" | |
| exit 0 | |
| fi | |
| # Configure git | |
| git config user.name "github-actions[bot]" | |
| git config user.email "github-actions[bot]@users.noreply.github.com" | |
| # Create a new orphan branch with squashed history | |
| echo "=== Squashing history ===" | |
| # Get the commit hash to start from (first commit to keep) | |
| FIRST_KEPT_COMMIT=$(git rev-list --after="${CUTOFF_DATE}" HEAD | tail -1) | |
| if [ -z "${FIRST_KEPT_COMMIT}" ]; then | |
| FIRST_KEPT_COMMIT=$(git rev-parse HEAD) | |
| fi | |
| # Create orphan branch from the state before our retention period | |
| # with all current files | |
| git checkout --orphan temp-cleanup | |
| # Stage all current files | |
| git add -A | |
| # Create initial squashed commit | |
| git commit -m "chore: squash history (commits before ${CUTOFF_DATE}) | |
| This commit contains the squashed history of gh-pages branch. | |
| Original commits before ${CUTOFF_DATE} have been combined to reduce repository size. | |
| Squashed ${COMMITS_TO_SQUASH} commits. | |
| 🤖 Generated by cleanup-history workflow" | |
| # Now cherry-pick the recent commits on top | |
| if [ "${COMMITS_TO_KEEP}" -gt 0 ]; then | |
| echo "Cherry-picking ${COMMITS_TO_KEEP} recent commits..." | |
| RECENT_COMMITS=$(git rev-list --reverse --after="${CUTOFF_DATE}" gh-pages) | |
| for commit in ${RECENT_COMMITS}; do | |
| # Skip if this would result in empty commit | |
| git cherry-pick --allow-empty "${commit}" || { | |
| echo " Skipping commit ${commit} (likely empty or conflict)" | |
| git cherry-pick --abort 2>/dev/null || true | |
| } | |
| done | |
| fi | |
| # Force update gh-pages | |
| git branch -D gh-pages | |
| git branch -m gh-pages | |
| # Garbage collect | |
| echo "" | |
| echo "=== Running garbage collection ===" | |
| git reflog expire --expire=now --all | |
| git gc --prune=now --aggressive | |
| NEW_SIZE=$(du -sh .git | cut -f1) | |
| NEW_COMMITS=$(git rev-list --count HEAD) | |
| echo "" | |
| echo "=== Cleanup complete ===" | |
| echo "Before: ${CURRENT_COMMITS} commits, ${CURRENT_SIZE}" | |
| echo "After: ${NEW_COMMITS} commits, ${NEW_SIZE}" | |
| - name: Push cleaned history | |
| if: ${{ github.event.inputs.dry_run != 'true' }} | |
| run: | | |
| git push origin gh-pages --force | |
| - name: Summary | |
| run: | | |
| if [ "${{ github.event.inputs.dry_run }}" = "true" ]; then | |
| echo "## Dry Run Complete" >> $GITHUB_STEP_SUMMARY | |
| echo "No changes were pushed." >> $GITHUB_STEP_SUMMARY | |
| else | |
| echo "## History Cleanup Complete" >> $GITHUB_STEP_SUMMARY | |
| echo "The gh-pages branch history has been squashed." >> $GITHUB_STEP_SUMMARY | |
| echo "" >> $GITHUB_STEP_SUMMARY | |
| echo "Old commits have been combined into a single commit to reduce repository size." >> $GITHUB_STEP_SUMMARY | |
| fi |