Files
alkhttp/tasks/adapters/review-002-yaml-normalization.md
T
glm-5.3-flash e2c255d40c docs(tasks): decompose review-002 into 24 tasks (23 implementation + 1 bracketed follow-up)
Decomposition of docs/reviews/002-post-remediation-review.md per its
5-unit remediation plan:

- Unit 1 (security-critical): gw15-publish-body-cap,
  prj16-schema-via-call (CF-004 filed alkcall-side), fwd13-dot-segments,
  fwd16-missing-capability, oai11-ref-memoization
- Unit 2 (timeout/terminality): ws13-idle-progress,
  fwd15-stream-timeout, cli01-retry-after-budget, con17-mcp-pagination,
  con18-wss-sweep-exit
- Unit 3 (projection/docs): projection-truthfulness, mcp-batch-cap,
  gw16-status-drift
- Unit 4 (spec-import): yaml-normalization, oai13-path-item-wildcards,
  import-loudness-cluster, js01-placeholder-check,
  fwd17-19-contract-decisions
- Unit 5 (WS polish + tests): con18b-ws-polish,
  client-policy-wire-tests, cov-deployment-knobs, cov13-dead-code,
  srv11-srv12-router-ordering
- review-002-bracketed-followup: tentatively planned post-bulk pass
  (stale-check, OQA-18 enforcement decision, CON-08/09 close() lever,
  cross-crate re-checks) — deliberately not serialized against the
  bulk

Also: review-002 numbering repair (CON-14 was double-booked; MCP
pagination now CON-14, from_wss monitor renumbered CON-18, missing
CON-14 section added).

taskgraph: 66 valid, no cycles; 24 pending (all review-002);
gen-1/gen-2 parallel waves identified; workflow-cost hotspots are
prj16 (12.8) and ws13 (11.1), both carrying the reviewed slicing
guidance in their Notes.
2026-08-30 10:50:34 +00:00

3.1 KiB

id, name, status, depends_on, scope, risk, impact, level, tags
id name status depends_on scope risk impact level tags
review-002-yaml-normalization YAML input normalization — duplicates, .inf, merge keys, non-string keys (OAI-12) pending
narrow medium component implementation
adapters
review-002
from-openapi
openapi-spec

Description

Review 002 OAI-12 [major]. OpenAPISpec::from_yaml (openapi_spec.rs:153-158) is a single yaml_serde::from_str::<Value> with zero post-parse normalization; three verified corruptions flow through unimpeded (empirically confirmed against yaml_serde 0.10.7):

  1. Duplicate keys silently last-win on the Value path (visit_map → values.insert) while the JSON path errors on the same document — the two input formats disagree, YAML's failure mode is silent.
  2. .inf/.nan numbers become Value::Null through Number::from_f64(∞) → None — a declared constraint (maximum: .inf is unusual, but any float inf) silently vanishes from the advertised schema.
  3. Merge keys (<<: *anchor) are not applied (yaml_serde's apply_merge() is opt-in and unused) — << survives as a literal property name in the resolved/advertised schema.

Non-string keys (200: response codes as numbers etc.) were checked — plain statuses survive via string round-trips — but numeric inference into any string-matched field is a live hazard (e.g. style: 1).

Acceptance Criteria

  • A post-parse normalization pass on the YAML path (before from_value): reject duplicate keys (loud, naming the path or at least the document context), reject .inf/.nan-derived nulls-from-floats (either reject or reject-with-context), and decide merge keys: either invoke apply_merge() (matching YAML 1.1 user expectations; ADR-051 declares YAML 1.2 via yaml_serde — verify which the crate claims) or reject << keys loudly
  • Non-string keys: reject or coerce-with-loudness (decide; JSON path parity is the goal — the same document should mean the same thing through both entry points or the difference must be loud)
  • Tests at the from_yaml seam (not the parser): duplicate keys → error; .inf → loud error (not silent null); merge key applied or rejected; quoted-always spec ("200":) unchanged
  • A doc note on the YAML/JSON parity contract (ADR-051 section or the module doc)
  • cargo test, cargo clippy --all-targets -- -D warnings, cargo fmt --check pass

References

  • docs/reviews/002-post-remediation-review.md (Part E', OAI-12; Test-gap 9)
  • src/adapters/openapi_spec.rs:153-158 (the seam), from_openapi.rs (the consumers)
  • docs/architecture/decisions/051-yaml-input-for-from-openapi.md
  • tasks/adapters/review-001-openapi-import-integrity.md (the import-integrity context)

Notes

Keep the walk cheap (one pass, no allocation beyond error messages). The alias-bomb/depth bounds are dependency-provided and verified working (review 002 re-verified) — do not re-implement them; the task is about semantic normalization, not resource limits. ADR-051 is the decision record to update if the merge-key stance changes behavior.