Sebuf

Phase 2: Foundation - Shared Annotations Verification Report

Phase Goal: All generators consume annotation metadata through a single shared package, eliminating duplication and ensuring consistency for the 8 new annotations coming next

Verified: 2026-02-05T17:32:29Z Status: PASSED Re-verification: No — initial verification

Goal Achievement#

Observable Truths#

# Truth Status Evidence
1 A new internal/annotations package exists that all 4 generators import for annotation parsing (HTTPConfig, QueryParam, UnwrapInfo, HeaderConfig types) ✓ VERIFIED Package exists with 11 files (1,038 lines total), doc.go documents convention-based API. All 4 generators import github.com/SebastienMelki/sebuf/internal/annotations
2 All existing golden file tests pass without changes to expected output (zero behavior change) ✓ VERIFIED httpgen: 4/4 tests pass, clientgen: 3/3 tests pass, tsclientgen: 4/4 tests pass, openapiv3: 18/18 tests pass. Full test suite: 6/6 packages PASS
3 The duplicated annotation parsing code (~1,289 lines across httpgen, clientgen, tsclientgen, openapiv3) is removed and replaced with shared package calls ✓ VERIFIED 1,678 lines deleted: httpgen/annotations.go (392), clientgen/annotations.go (241), tsclientgen/annotations.go (250), openapiv3/http_annotations.go (406), openapiv3/http_annotations_test.go (389). All generators now call annotations.GetHTTPConfig(), annotations.GetQueryParams(), annotations.GetServiceHeaders(), etc.
4 The HTTP handler generator uses consistent protojson-based serialization (no accidental encoding/json usage for proto messages) ✓ VERIFIED encoding/json import only used for json.Marshaler/json.Unmarshaler interface checks (lines 379, 644 in generator.go). All proto message serialization uses protojson (line 388 for unmarshal, line 647 for marshal)
5 Cross-file annotation resolution never silently suppresses errors ✓ VERIFIED collectFileUnwrapFields() returns error on GetUnwrapField() failure (unwrap.go:99). CollectGlobalUnwrapInfo() propagates errors with file path context (unwrap.go:87). Generator.Generate() returns error from CollectGlobalUnwrapInfo (generator.go:46-48). No continue-on-error patterns found

Score: 5/5 truths verified

Required Artifacts#

Artifact Expected Status Details
internal/annotations/doc.go Package documentation with convention-based API ✓ VERIFIED 27 lines, documents pattern for adding new annotations
internal/annotations/http_config.go HTTP configuration parsing ✓ VERIFIED 1,857 bytes, exports GetMethodHTTPConfig, GetServiceBasePath
internal/annotations/headers.go Header annotation parsing ✓ VERIFIED 2,657 bytes, exports GetServiceHeaders, GetMethodHeaders, CombineHeaders
internal/annotations/query.go Query parameter parsing ✓ VERIFIED 2,023 bytes, exports GetQueryParams with QueryParam type
internal/annotations/unwrap.go Unwrap annotation parsing ✓ VERIFIED 4,820 bytes, exports HasUnwrapAnnotation, GetUnwrapField, FindUnwrapField, IsRootUnwrap, UnwrapFieldInfo type
internal/annotations/path.go Path parameter utilities ✓ VERIFIED 1,421 bytes, exports ExtractPathParams, BuildHTTPPath, EnsureLeadingSlash
internal/annotations/method.go HTTP method utilities ✓ VERIFIED 1,318 bytes, exports HTTPMethodToString, HTTPMethodToLower
internal/annotations/field_examples.go Field example parsing ✓ VERIFIED 774 bytes, exports GetFieldExamples
internal/annotations/helpers.go Shared utilities ✓ VERIFIED 189 bytes, exports LowerFirst
internal/annotations/annotations_test.go Package tests ✓ VERIFIED 13,885 bytes, comprehensive test coverage
From To Via Status Details
httpgen/generator.go annotations.GetServiceHeaders import + call ✓ WIRED Line 1414: serviceHeaders := annotations.GetServiceHeaders(service)
httpgen/generator.go annotations.GetMethodHeaders import + call ✓ WIRED Line 1433: methodHeaders := annotations.GetMethodHeaders(method)
httpgen/generator.go annotations.GetQueryParams import + call ✓ WIRED Line 1479: queryParams := annotations.GetQueryParams(method.Input)
httpgen/unwrap.go annotations.GetUnwrapField import + call ✓ WIRED Line 97: info, err := annotations.GetUnwrapField(msg) with error propagation
clientgen/generator.go annotations package import ✓ WIRED Imports github.com/SebastienMelki/sebuf/internal/annotations
tsclientgen/generator.go annotations package import ✓ WIRED Imports github.com/SebastienMelki/sebuf/internal/annotations
tsclientgen/types.go annotations package import ✓ WIRED Imports github.com/SebastienMelki/sebuf/internal/annotations
openapiv3/generator.go annotations package import ✓ WIRED Imports github.com/SebastienMelki/sebuf/internal/annotations
openapiv3/types.go annotations package import ✓ WIRED Imports github.com/SebastienMelki/sebuf/internal/annotations

Requirements Coverage#

Requirement Status Supporting Evidence
FOUND-01 (Extract shared annotation parsing into internal/annotations) ✓ SATISFIED Package created with 1,038 lines implementing all annotation types. 1,678 lines of duplicated code deleted across 4 generators
FOUND-04 (Audit serialization consistency) ✓ SATISFIED Confirmed protojson-only for proto messages. encoding/json only for interface checks (json.Marshaler/json.Unmarshaler). No accidental encoding/json serialization of proto messages

Anti-Patterns Found#

File Line Pattern Severity Impact
N/A N/A No anti-patterns detected N/A N/A

Anti-Pattern Scan Results:

  • No TODO/FIXME/XXX/HACK comments in annotations package (excluding tests)
  • No console.log-only implementations
  • No placeholder/stub patterns
  • No empty implementations
  • No silent error suppression

Phase Execution Summary#

Plans executed: 4/4 (100%)

  1. 02-01-PLAN.md — Create internal/annotations package with canonical types, functions, and tests

    • Commits: e813d6c (feat), a91d27c (test), a452694 (fix), 94dcbe1 (docs)
    • Lines added: ~1,038 in annotations package

  2. 02-02-PLAN.md — Migrate httpgen to shared annotations, delete old annotation code

    • Commits: b9e6e0d (refactor), 355632c (feat), 856f63d (docs)
    • Lines deleted: 392 (httpgen/annotations.go)

  3. 02-03-PLAN.md — Migrate clientgen and tsclientgen to shared annotations

    • Commits: 105195c (refactor clientgen), f708593 (refactor tsclientgen), 5ef37fd (docs)
    • Lines deleted: 241 (clientgen/annotations.go) + 250 (tsclientgen/annotations.go)

  4. 02-04-PLAN.md — Migrate openapiv3, fix error suppression, final verification

    • Commits: c12da4d (refactor), 11f9578 (fix), fbe5732 (docs)
    • Lines deleted: 406 (http_annotations.go) + 389 (http_annotations_test.go)

Total duplication eliminated: 1,678 lines Net line reduction: ~640 lines (1,678 deleted - 1,038 added in shared package)

Code Quality Metrics#

Test Coverage:

  • All existing golden file tests pass unchanged (zero behavior change)
  • Full test suite: 6/6 packages PASS
  • httpgen: TestHTTPGenGoldenFiles (4 scenarios)
  • clientgen: TestClientGenGoldenFiles (3 scenarios)
  • tsclientgen: TestTSClientGenGoldenFiles (4 scenarios)
  • openapiv3: TestExhaustiveGoldenFiles (18 scenarios)

Build Status:

  • All 4 plugin binaries build successfully
  • No compiler errors
  • No linter errors (make lint-fix run during execution)

Error Handling:

  • Cross-file annotation resolution fails hard with descriptive errors
  • All error paths include file path + message/field name context
  • No silent error suppression anywhere in annotation resolution

Extensibility:

  • Convention-based API documented in doc.go
  • Clear pattern for adding new annotation types (8 JSON mapping annotations coming in Phases 4-7)
  • Each annotation type in separate file with standard Get/Parse function signatures

Verification Conclusion#

All 5 success criteria VERIFIED. Phase 2 goal ACHIEVED.

The shared annotations infrastructure is production-ready:

  1. ✓ internal/annotations package exists with all required types and functions
  2. ✓ All 4 generators successfully migrated with zero behavior change
  3. ✓ 1,678 lines of duplicated code eliminated
  4. ✓ Serialization consistency confirmed (protojson-only for proto messages)
  5. ✓ Cross-file annotation resolution fails hard on errors

The codebase is now positioned for the 8 new JSON mapping annotations in Phases 4-7. The convention-based API makes it straightforward to add new annotation types without duplicating code across generators.

Ready to proceed to Phase 3: Existing Client Review

Verified: 2026-02-05T17:32:29Z
Verifier: Claude (gsd-verifier)