fix(ingester): rfc 0047 erasure read→delete loop; encoded-object real-server test - #710
Conversation
…d-object real-server test Per the OpenFGA assistant (2026-08-18): a paginated Read is not a snapshot, so erase_conversation re-reads the object and deletes until a Read returns empty (bounded, else Incomplete → retried next sweep). The served-binary test writes tenants containing '/' and '%' to the real v1.11.1 and asserts Read returns the ids byte-for-byte and the encoded prefix filters the streamed enumeration. RFC §3.6 records both. Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
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📝 WalkthroughWalkthroughConversation erasure now performs up to eight read-and-delete rounds and reports incomplete cleanup when tuples remain. An integration test validates percent-encoded tenant and object identifiers, exact reads, prefix isolation, and cleanup. The RFC documents these behaviors. ChangesConversation cleanup and encoding
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟠 High · up to The PR repeatedly deletes paginated tuples, but completion can still race with concurrent writes and may report an incomplete erase after the final batch was removed, leaving deleted conversations visible or causing unnecessary retries. Merge should wait for race-safe completion and a final confirmation read. Possibly related PRs
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Pull request overview
This PR follows up on RFC 0047 §3.6 by tightening the OpenFGA erasure semantics (accounting for non-snapshot paginated reads) and by adding a served-binary integration test that validates tenant/object percent-encoding behavior against a real OpenFGA server, with the RFC updated to record the conclusions.
Changes:
- Update
GraphEmitter::erase_conversationto loopRead → deletefor bounded rounds and returnIncompletewhen still non-empty. - Add a real-server (container) integration test that asserts object IDs round-trip byte-for-byte and that streamed enumeration prefix-filtering matches encoded prefixes (no
avsa/baliasing). - Document the above in RFC 0047.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| docs/rfcs/0047-rebac-resolver-and-graph-visibility.md | Records the bounded Read → delete loop rationale and the real-server object naming verification. |
| crates/ourios-server/tests/it/rfc0047_openfga.rs | Adds an end-to-end served-binary test for encoded tenant segment object naming and streamed prefix filtering. |
| crates/ourios-ingester/src/graph_emitter.rs | Implements the bounded multi-round erasure loop and returns Incomplete when erasure doesn’t converge. |
Suppressed comments (1)
crates/ourios-ingester/src/graph_emitter.rs:255
erase_conversationcan returnOpenFgaError::Incompleteeven if the last delete pass removed the final tuples: on the final loop iteration you delete tuples but never re-read to confirm the object is empty before returningIncomplete. This can cause spurious retry-next-sweep failures.
for _ in 0..ERASE_ROUNDS {
let tuples = self.client.read_by_object(&object).await?;
if tuples.is_empty() {
return Ok(deleted);
}
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Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
Low-severity: h2 accepted and queued empty DATA frames without limit; patched in 0.4.16. cargo deny advisories gate. Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
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Actionable comments posted: 5
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Inline comments:
In `@crates/ourios-ingester/src/graph_emitter.rs`:
- Around line 253-254: Update the erasure flow around the tuples.is_empty()
early return to coordinate with concurrent emitters using an erasure fence or
generation check. Keep the erasure marker until in-flight writers and flushes
cannot add tuples for the erased conversation, then report success and remove
the marker only after tuple cleanup is complete.
- Around line 249-273: Add adjacent unit tests for the bounded erasure loop
covering an empty first read, chunked deletion, success after repeated reads,
success on the eighth deletion, and OpenFgaError::Incomplete only when tuples
remain. Exercise the graph emitter’s conversation deletion method and verify the
relevant client interactions and outcomes without changing production behavior.
- Around line 251-273: Update the deletion flow in the method containing the
ERASE_ROUNDS loop to perform one final read_by_object confirmation after all
deletion rounds complete. Return Ok(deleted) when that final read is empty, and
return OpenFgaError::Incomplete only if tuples remain; preserve existing
deletion and error handling.
Apply the same fix in `@crates/ourios-ingester/src/graph_emitter.rs` around lines
249 - 273.
In `@crates/ourios-server/tests/it/rfc0047_openfga.rs`:
- Line 221: Extend the cleanup section after the fga.write deletion call to read
every object from seeded and assert each result is empty, then verify each
filtered stream is also empty. Keep the existing cleanup request and error
handling, and use the test’s existing object-read and stream-filter helpers.
Apply the same fix in `@crates/ourios-server/tests/it/rfc0047_openfga.rs` around
lines 175 - 220.
In `@docs/rfcs/0047-rebac-resolver-and-graph-visibility.md`:
- Around line 458-467: Update the tuple deletion-loop documentation to state the
exact eight-round maximum, and specify that if tuples remain afterward the
operation returns OpenFgaError::Incomplete while retaining the marker for the
next sweep.
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crates/ourios-ingester/src/graph_emitter.rscrates/ourios-server/tests/it/rfc0047_openfga.rsdocs/rfcs/0047-rebac-resolver-and-graph-visibility.md
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…-party licenses Copilot on #710: the erase loop's give-up is its own OpenFgaError variant (EraseIncomplete { rounds }) rather than overloading Incomplete (a cut-off stream); the visibility rejection table maps it fail-closed. THIRD-PARTY-LICENSES.md regenerated for the h2 bump (cargo about no-diff gate). Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
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Pull request overview
Copilot reviewed 3 out of 4 changed files in this pull request and generated no new comments.
Suppressed comments (3)
crates/ourios-ingester/src/graph_emitter.rs:274
erase_conversationreturnsOpenFgaError::Incompletewhen the object is still non-empty afterERASE_ROUNDS, butOpenFgaError::Incompleteis documented and displayed as "enumeration incomplete (stream cut off)". That makes sweep errors/audit harder to interpret and couples an erasure failure mode to the streamed-enumeration error semantics.
}
}
}
Err(OpenFgaError::Incomplete)
}
docs/rfcs/0047-rebac-resolver-and-graph-visibility.md:467
- This RFC text cites an "OpenFGA assistant" with a date as the source for the non-snapshot pagination behavior. RFCs should stand on durable, reproducible rationale (e.g., "paginated reads are not a snapshot") and/or on the integration test evidence you added, rather than a conversational assistant reference that won’t be verifiable later.
The tuple deletion loops `Read → delete` until a `Read` returns empty
(bounded): a paginated `Read` is not a snapshot (OpenFGA assistant,
2026-08-18), so a tuple the flush-cadence feed writes concurrently is
swept up by the next round. The same review confirmed the object-naming
crates/ourios-ingester/src/graph_emitter.rs:255
- This changes erasure semantics (multi-round
Read → deletewith anERASE_ROUNDSbound and anIncompleteerror when it doesn’t converge), but thegraph_emitterunit tests in this file don’t exerciseerase_conversationat all. Adding a targeted test would help pin the new behavior (e.g., a fake OpenFGA server where/readreturns tuples on round 1 and empty on round 2, plus a case that stays non-empty forERASE_ROUNDSand asserts the error).
for _ in 0..ERASE_ROUNDS {
let tuples = self.client.read_by_object(&object).await?;
if tuples.is_empty() {
return Ok(deleted);
}
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Pull request overview
Copilot reviewed 6 out of 7 changed files in this pull request and generated no new comments.
Suppressed comments (1)
crates/ourios-ingester/src/graph_emitter.rs:255
erase_conversationcan returnOpenFgaError::EraseIncompleteeven if the last round successfully deleted the final tuples. The loop only checks for emptiness before deleting each round’s tuples, and after the final delete it exits without a finalReadto confirm the object is now empty.
for _ in 0..ERASE_ROUNDS {
let tuples = self.client.read_by_object(&object).await?;
if tuples.is_empty() {
return Ok(deleted);
}
…erts + RFC contract CodeRabbit on #710: a delete round that empties the object on the last permitted round is a success (one confirming read after it); the loop contract is unit-tested against a scripted fake (empty first read, chunked deletion, tuples reappearing, success on the last round, EraseIncomplete only when tuples remain, non-object ids are no-ops); the real-server test asserts the post-cleanup state; RFC §3.6 states the 8-round bound, the EraseIncomplete outcome and the concurrency semantics. Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
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Pull request overview
Copilot reviewed 6 out of 7 changed files in this pull request and generated no new comments.
Suppressed comments (1)
crates/ourios-ingester/src/graph_emitter.rs:253
erase_conversationreturnsdeletedand this value is used fortuples_deletedauditing, but the new multi-round read→delete loop can delete the same tuple key more than once (e.g., due to non-snapshot pagination or transiently stale reads). That can inflatedeletedand make the audit/report counts inaccurate.
Consider counting unique tuple keys successfully submitted for deletion within this erasure call (across rounds) instead of summing chunk.len() each time.
let object = objects.conversation(id);
let mut deleted = 0;
for round in 0..=ERASE_ROUNDS {
let tuples = self.client.read_by_object(&object).await?;
if tuples.is_empty() {
Summary
Follow-up from the OpenFGA assistant's answers to our three post-implementation questions (RFC 0047):
Read → deleteuntilReadis empty (bounded at 8 rounds, elseIncomplete→ retried next sweep): a paginatedReadis not a snapshot, so a tuple the flush-cadence emitter writes concurrently is swept up by the next round./and%(conversation:a/b/c-1vsconversation:a%2Fb/c-1,conversation:100%25/c-2) to v1.11.1 and assertsReadreturns the object ids byte-for-byte and the streamed enumeration filters on the encoded prefix —aanda/bnever alias.streamed-list-objectsserver-deadline behaviour stays undocumented (source-level question) and the clientlist_timeout_ms-below-deadline pattern remains the fail-closed answer.Related
RFC 0047 (#705–#709).
Checklist
cargo fmtcleancargo clippyclean (no new warnings)🤖 Generated with Claude Code
https://claude.ai/code/session_01JZXtbyWoQY19ZGtNecDfgv
Summary by CodeRabbit
Bug Fixes
Tests
Documentation