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fix(batch): let a write refuse to replace a locked version

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Add ObjectOptions.RefuseLockedOverwrite. With it set, PutObject (before
the rename) and CompleteMultipartUpload check, under the destination's
write lock, the stored version the write would replace: the version it
addresses, or the null version. DeleteObject checks the stored version
that a delete marker it writes names; in a multi-pool deployment that
version is resolved across pools. A version under retention or legal
hold is refused with ObjectLocked. The check reads the version's own
metadata, whatever the bucket configuration, and returns read errors.

Nothing sets the option yet.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Feng Ruohang <rh@vonng.com>
This commit is contained in:
Feng Ruohang
2026-11-05 04:14:06 +08:00
parent 9fefb756ad
commit 57c2b0fb76
5 changed files with 87 additions and 0 deletions
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cmd/object-api-interface.go
+6
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@@ -117,6 +117,12 @@ type ObjectOptions struct {
// Pools-layer version resolver; the caller holds the shared object lock.
replicaObjectInfo GetObjectInfoFn
// RefuseLockedOverwrite refuses, under the destination's write lock, a
// write that would replace a stored version Object Lock protects: the
// version it writes, or the version a delete marker it writes names.
// It returns ObjectLocked. Set by batch replication pulls.
RefuseLockedOverwrite bool
Speedtest bool // object call specifically meant for SpeedTest code, set to 'true' when invoked by SpeedtestHandler.
// Use the maximum parity (N/2), used when saving server configuration files