Malin 3bad3ad171 feat: add incremental backups, S3 cleanup, and cron scheduling ...

Incremental backups using BC API's lastModifiedDateTime filter to only
export records changed since the last successful run. Runs every 15
minutes via cron, with a daily full backup for complete snapshots.

bc-export.ps1:
- Add -SinceDateTime parameter for incremental filtering
- Append $filter=lastModifiedDateTime gt {timestamp} to all entity URLs
- Exit code 2 when no records changed (skip archive/upload)
- Record mode and sinceDateTime in export-metadata.json

bc-backup.sh:
- Accept --mode full|incremental flag (default: incremental)
- State file (last-run-state.json) tracks last successful run timestamp
- Auto-fallback to full when no state file exists
- Skip archive/encrypt/upload when incremental finds 0 changes
- Lock file (.backup.lock) prevents overlapping cron runs
- S3 keys organized by mode: backups/full/ vs backups/incremental/

bc-cleanup.sh (new):
- Lists all S3 objects under backups/ prefix
- Deletes objects older than RETENTION_DAYS (default 30)
- Handles pagination for large buckets
- Gracefully handles COMPLIANCE-locked objects

bc-backup.conf.template:
- Add BACKUP_MODE_DEFAULT option

cron-examples.txt:
- Recommended setup: 15-min incremental + daily full + daily cleanup
- Alternative schedules (30-min, hourly)
- Systemd timer examples

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-16 10:22:08 +01:00

3.5 KiB

Raw Blame History

View Raw