 curo1305
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bcb887e61d
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feat(05-03): implement OneDriveBackend — Microsoft Graph StorageBackend
- CloudConnectionError imported from google_drive_backend (shared exception type)
- CHUNK_SIZE = 10 * 1024 * 1024 (10 MB — above Graph 4 MB limit, Pitfall 6)
- All 7 StorageBackend methods implemented as async coroutines
- Resumable upload sessions (createUploadSession) used for ALL uploads
- _ensure_valid_token() checks expiry with 60s buffer, calls _refresh_token() if expired
- _refresh_token() wraps msal.ConfidentialClientApplication in asyncio.to_thread()
- invalid_grant → CloudConnectionError(reason='invalid_grant') per D-06 / B2 design
- presigned_get_url and generate_presigned_put_url raise NotImplementedError (D-14)
- delete_object silently ignores 404 (no-op per StorageBackend contract)
- Backend is stateless — no DB writes (B2 design)
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2026-05-28 21:10:56 +02:00 |
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