88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
"""Background scheduler for periodic SFTP backups."""
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import os
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import threading
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import time
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from datetime import datetime, timezone, timedelta
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_scheduler_thread = None
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_scheduler_running = False
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def start_backup_scheduler(app):
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"""Start the background backup scheduler."""
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global _scheduler_thread, _scheduler_running
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if _scheduler_running:
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return
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_scheduler_running = True
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def scheduler_loop():
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while _scheduler_running:
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try:
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with app.app_context():
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_check_and_run_backups(app)
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except Exception as e:
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print(f'[Backup Scheduler] Error: {e}')
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# Check every 60 seconds
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for _ in range(60):
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if not _scheduler_running:
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break
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time.sleep(1)
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_scheduler_thread = threading.Thread(target=scheduler_loop, daemon=True)
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_scheduler_thread.start()
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def stop_backup_scheduler():
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global _scheduler_running
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_scheduler_running = False
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def _check_and_run_backups(app):
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"""Check all active backup targets and run if due."""
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from app.extensions import db
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from app.models.backup_target import BackupTarget
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from app.services.sftp_backup import create_backup_zip, upload_backup_to_sftp
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targets = BackupTarget.query.filter_by(is_active=True).all()
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now = datetime.now(timezone.utc)
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for target in targets:
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if not target.backup_interval_minutes or target.backup_interval_minutes <= 0:
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continue
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# Check if backup is due
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if target.last_backup_at:
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next_due = target.last_backup_at + timedelta(minutes=target.backup_interval_minutes)
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if now < next_due:
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continue
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# Run backup
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db_uri = app.config['SQLALCHEMY_DATABASE_URI']
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db_path = db_uri.replace('sqlite:///', '')
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upload_path = app.config['UPLOAD_PATH']
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zip_path = None
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try:
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zip_path = create_backup_zip(db_path, upload_path)
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version = upload_backup_to_sftp(target, zip_path, app)
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target.last_backup_at = now
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target.last_backup_status = 'success'
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target.last_backup_message = f'Version {version} erfolgreich hochgeladen'
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db.session.commit()
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print(f'[Backup] {target.name}: {version} OK')
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except Exception as e:
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target.last_backup_at = now
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target.last_backup_status = 'error'
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target.last_backup_message = str(e)[:500]
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db.session.commit()
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print(f'[Backup] {target.name}: FEHLER - {e}')
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finally:
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if zip_path and os.path.exists(zip_path):
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os.unlink(zip_path)
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