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Chris LuandDevin
d3a97f76bd
* s3: keep suspended-versioning conditional writes off the routed condition A suspended PUT writes the null-version slot at the regular path while the entry the conditional headers evaluate lives under .versions/. The routed WriteCondition checked the request's etag against that empty slot, so a correct If-Match failed with 412. Passing uniqueWritePath sends conditional requests through the lock path, whose precondition resolves the same entry the read path serves; unconditional writes still route. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * filer_pb: add condition_alt_key to ObjectTransactionRequest * filer: evaluate a transaction condition against a fallback entry condition_alt_key names the entry consulted when the primary is absent, so a suspended-versioning write can check 'the null slot if present, else the latest version' atomically under the lock. * s3: route suspended-versioning conditional writes with a fallback key The gateway names the latest version file as condition_alt_key, so the transaction checks the entry the read path serves — null slot first, latest version when it is absent — under the same lock that applies the write. Conditional suspended PUTs route again instead of splitting check and write across a gateway lock that routed writes skip. * filer: resolve the condition fallback under the transaction lock The gateway named the pointed-at version file as condition_alt_key, resolved before the transaction ran: a concurrent version delete could move the latest pointer between the gateway read and the locked check, and a delete-marker latest read as an existing object. The alt key is now the .versions directory and the filer resolves the latest-version pointer under the same lock that serializes the write — a delete marker resolves to absent, and unresolvable pointer state fails closed. * filer: fail closed on alt-key lookups and skip directory primaries A transient FindEntry error returning a nil entry read as "versions dir absent" and let If-None-Match writes pass. Check the error before the entry. And a bare directory at the object path satisfied the primary lookup, so the .versions fallback never ran — directories are not the object, treat them as an absent slot. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * filer: scope directory-as-absent conditions to alt-key callers --------- Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>