Deduplicate test-result attestations by test name - #1817
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Included review availability: Your plan provides up to 12 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe release policy now evaluates only the latest valid timestamped attestation for each test name. Tests cover replacement by newer results, independent test names, and attestations without timestamps. Documentation links reference updated rule locations. ChangesTest attestation deduplication
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The change deduplicates test-result attestations by test name and latest timestamp; no actionable merge-blocking risk remains beyond normal checks and review. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@policy/release/test_attestation/test_attestation.rego`:
- Around line 49-54: Update the latest-attestation selection using
_attestation_timestamp so timestamps are parsed with time.parse_rfc3339_ns
before computing max, ensuring RFC3339 offsets are compared chronologically
rather than lexically; add a test covering offset timestamps.
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policy/release/test_attestation/test_attestation.regopolicy/release/test_attestation/test_attestation_test.rego
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Actionable comments posted: 1
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Inline comments:
In `@policy/release/test_attestation/test_attestation.rego`:
- Around line 55-61: Update the latest-attestation selection around max_ts and
_attestation_timestamp so equal-timestamp attestations cannot all remain in
_test_attestations: use a unique attestation field to deterministically select
exactly one, or explicitly reject ambiguous ties while preserving fail-closed
behavior when no unique field exists.
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policy/release/test_attestation/test_attestation.rego
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When a test task is re-run, each execution produces a separate test-result attestation. Previously all attestations were evaluated, so a stale FAILED result would block even after a successful re-run. Group attestations by test name (predicate.configuration[0].name) and keep only the one with the latest predicate.timestamp. Attestations without a timestamp are excluded from evaluation entirely. https://redhat.atlassian.net/browse/EC-2082 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Note: The following inline comments could not be posted on the diff (GitHub returned 422) and are included here instead:
policy/release/test_attestation/test_attestation.rego:45: [high] fail-open
Attestations without a valid predicate.timestamp (missing, empty, or non-string) are silently excluded from all policy evaluation. The _test_attestations set comprehension requires _attestation_timestamp(statement) == max_ts, and when no statement in a name-group has a valid timestamp, max({}) is undefined in Rego, so the entire rule body fails for that group. No deny or warn rules fire for those tests, creating a fail-open path: a release can proceed without those test results being checked.
Suggested fix: Preserve the fail-closed default by falling back to evaluating all attestations for a test name when none have timestamps. Alternatively, add a deny or warn rule that fires when verified test-result attestations are excluded due to missing timestamps.
policy/release/test_attestation/test_attestation.rego:45: [medium] behavioral change / silent exclusion
The new _test_attestations rule silently excludes any attestation that lacks a valid predicate.timestamp. Before this change, all verified test-result attestations were evaluated regardless of whether they had a timestamp. There is no mechanism to surface a warning when attestations are dropped due to missing timestamps, making it difficult to diagnose why a known-failing test is not blocking.
Suggested fix: Add a warn or deny rule that fires when an attestation in _all_test_attestations is excluded from _test_attestations because it has no valid timestamp.
policy/release/test_attestation/test_attestation_test.rego(file-level): Line 573 · [medium] test integrity / coverage reduction
The _mock_blob_missing_predicate mock was changed from a statement with no predicate key at all to one with a predicate containing only a timestamp. The test test_missing_predicate previously verified that a statement completely lacking a predicate would trigger the test_data_found rule. The original scenario is no longer tested, and under the new dedup logic such a statement would be silently excluded.
Suggested fix: Add a dedicated test that exercises the new behavior when a statement has no predicate at all (and therefore no timestamp): verify it is excluded from _test_attestations and does NOT trigger test_data_found.
policy/release/test_attestation/test_attestation.rego:39: [low] timestamp format validation
_attestation_timestamp accepts any non-empty string as a valid timestamp without validating RFC 3339 format. A malformed timestamp would participate in lexicographic max() comparison. In practice unlikely due to verified attestation provenance, but format validation would add defense in depth.
Suggested fix: Add a time.parse_rfc3339_ns(ts) guard in _attestation_timestamp to ensure only well-formed RFC 3339 timestamps participate in comparison.
policy/release/test_attestation/test_attestation.rego:45: [low] behavioral scope creep
The exclusion of timestamp-less attestations is a separate behavioral change beyond deduplication. The PR description acknowledges this but the PR title implies only deduplication. The actual risk is captured by the fail-open finding.
policy/release/test_attestation/test_attestation_test.rego:109: [low] naming convention
The three helpers (_make_statement, _make_statement_with_ts, _make_statement_no_ts) share nearly identical structure. Consider consolidating.
policy/release/test_attestation/test_attestation.rego:48: [low] edge case / grouping collision
Attestations are grouped by _test_name(statement), which falls back to the literal string unknown test when predicate.configuration is missing or empty. If two distinct test attestations both lack configuration, they collide under the same group key and only the latest is kept, potentially masking a failure.
policy/release/test_attestation/test_attestation.rego:57: [low] timestamp comparison
max() on timestamp strings uses lexicographic comparison, which only produces correct chronological ordering when all timestamps use the same timezone offset format. Mixed representations would compare incorrectly.
policy/release/test_attestation/test_attestation.rego(file-level): Line 20 · [low] documentation coherence
The package-level METADATA description does not mention the new deduplication behavior or timestamp requirement. This annotation is the source of truth for auto-generated documentation.
Suggested fix: Update the METADATA description (lines 20-25) to mention that only the latest attestation per test name (by timestamp) is evaluated, and that attestations without a timestamp are excluded.
st3penta
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LGTM.
The only thing worth fixing is maybe the fail-open finding by fullsend, unless we are sure that all the konflux tests generate the test attestations in the same format (in particular the name and timestamp fields). If that's the case, it should be impossible to bypass the filter, and it's good as is.
All test attestations should produce those fields. Also, we have a story to require certain test attestations so that would throw a violation. |
All test attestations will have the timestamp and name field. We also have a list of required test attestations so a release would be blocked if it has no valid test attestations.
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🤖 Finished Retro · ✅ Success · Started 2:55 PM UTC · Completed 3:09 PM UTC Commit: |
Retro: PR #1817 — Deduplicate test-result attestations by test nameWorkflow overview: Human-authored PR (joejstuart, with Claude Opus 4.6 co-authorship) to group test-result attestations by test name and keep only the latest by timestamp. 4 review runs triggered (2 completed, 2 cancelled due to rapid force-pushes). No code/triage/fix agent involvement — this was a human-driven PR. Review quality was good. The review agent's top finding — that attestations without a valid No rework attributable to the agent. The 3 force-pushes appear to be the author iterating on their own code, not responding to agent findings. The author dismissed the agent's CHANGES_REQUESTED review with contextual justification before merging. Evidence for existing open issues (no new proposals needed for these):
Proposals filed
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When a test task is re-run, each execution produces a separate test-result attestation. Previously all attestations were evaluated, so a stale FAILED result would block even after a successful re-run.
Group attestations by test name (predicate.configuration[0].name) and keep only the one with the latest predicate.timestamp. Attestations without a timestamp are excluded from evaluation entirely.
EC-2082