benroeder opened a new pull request, #7212:
URL: https://github.com/apache/opendal/pull/7212
## Summary
- Fixes #7211
- Replace `oio::OneShotWriter` with `oio::MultipartWriter` backed by Swift's
Static Large Object (SLO) API
- `initiate_part()` generates a local UUID (no server call needed, unlike S3)
- `write_part()` uploads segments to
`.segments/{path}/{upload_id}/{part_number:08}`
- `complete_part()` PUTs a JSON manifest to `{path}?multipart-manifest=put`
- `abort_part()` lists and deletes orphaned segments
- Small writes still go through `write_once()` as a single PUT —
`oio::MultipartWriter` handles the decision automatically
- Supports concurrent part uploads via `args.concurrent()`
- Adds `uuid` dependency for upload ID generation
Reference:
https://docs.openstack.org/swift/latest/overview_large_objects.html
## Test plan
- `test_writer_write`, `test_writer_write_with_overwrite`,
`test_writer_write_with_concurrent`, `test_writer_sink`, `test_writer_abort`
and other writer tests now execute
- All 93 behavior tests pass against both local SAIO and a real Swift cluster
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