0ab719500b
Backend: - Add uuid, sync_version, is_deleted fields to all syncable models - Add SyncSettings model for WebDAV configuration (AES-256-GCM encrypted passwords) - Add crypto.py: AES-256-GCM encryption derived from JWT_SECRET via PBKDF2 - Add sync_lock.py: thread-level sync lock with 503 middleware for write blocking - Add webdav.py: WebDAV client using requests (PUT/GET/MKCOL/DELETE) - Add sync_service.py: push/pull/bidirectional merge with LWW conflict resolution - Add sync router with 8 endpoints: config, test, push, pull, sync, status, remote delete - Add UUID backfill for existing records in init_db() - Add SQLAlchemy before_update event to auto-increment sync_version - Register sync middleware to block writes during sync (503) Frontend: - Add sync API client (WebUI/src/api/sync.ts) - Add useSyncStore with config, test, push/pull/sync operations - Add WebDAV config + sync UI in SettingsView - Add 503 status code handling in axios interceptor - Add uuid field to all TypeScript type definitions Scripts: - Add scripts/start.bat and scripts/stop.bat for project management Design doc: docs/plan/webdav-sync-design.md
37 lines
908 B
Python
37 lines
908 B
Python
"""
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全局同步锁与同步模式标记
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同步期间禁止所有写操作，前端显示同步遮罩
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"""
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import threading
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_sync_lock = threading.Lock()
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_sync_in_progress = False
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_sync_mode = threading.local()
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def acquire_sync_lock() -> bool:
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"""非阻塞获取同步锁，成功返回 True"""
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acquired = _sync_lock.acquire(blocking=False)
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if acquired:
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global _sync_in_progress
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_sync_in_progress = True
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_sync_mode.active = True
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return acquired
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def release_sync_lock():
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"""释放同步锁"""
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global _sync_in_progress
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_sync_in_progress = False
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_sync_mode.active = False
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_sync_lock.release()
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def is_syncing() -> bool:
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"""检查是否正在同步"""
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return _sync_in_progress
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def is_sync_mode() -> bool:
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"""检查当前线程是否在同步模式中（跳过 sync_version 自增）"""
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return getattr(_sync_mode, 'active', False) |