DongHyeonkaandClaude Opus 5
b2963105a8
The keycloak project ended with four open questions that design could not
settle. A two-VM lab was built to answer them by measurement, and this is
that material: 26 experiments, 125 raw command outputs, 22 browser captures.
Follows the import procedure in README.md.
source/ the originating repository verbatim — 78 documents, 28 SVGs,
8 manifests, plus .source-revision recording the commit
final/ the SSOT
document.md 729 lines written from the 29 experiment documents, not
concatenated: what was predicted, what was measured, and
where the measurement itself was wrong
evidence/raw 125 outputs, flattened to <experiment>__<file> because
the originals collided (01-baseline.txt appeared three
times) and the audit only globs the top level
evidence/meta one per raw file; command and exitCode are null and the
README says why rather than inventing them
evidence/browser 22 captures
assets/ three diagrams through techviz
.techviz/ their VizSpecs
A separate project rather than an addition to keycloak: the B-layer answers
that project's four questions, but the A, C and D layers are about cluster
failure, SSO and operations, and one document.md should hold one subject.
The four question records there can point here through 관계.
Recorded rather than papered over: only three of the 28 diagrams were
remade. The repository forbids hand-drawn SVG and forbids titles inside the
canvas; all 28 originals carry both, so converting them is redrawing, not
reformatting. They stay in source/ and the gap is written into the document.
verify-pipeline.py passes. audit-records.py reports no issues.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
54 lines
2.7 KiB
Markdown
54 lines
2.7 KiB
Markdown
---
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kind: CONCEPT
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slug: messaging-schema-avro-c04
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title: 쓰기 스키마와 읽기 스키마를 둘 다 넘기는 경로
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topic: schema-and-wire-models
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project: clean-architecture-backend-template
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status: 게시 전
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sourceRevision: 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916
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rootTreeNode: concept:messaging-schema-avro-c04
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evidenceCapturedOn: 2026-09-01
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assets:
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- key: messaging-schema-avro-c04
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file: ../../../final/evidence/rendered/messaging-schema-avro-c04.svg
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evidence:
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- ../../../final/evidence/raw/messaging-schema-avro-c04.txt
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source:
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- 원본 분석 절은 analysis/messaging/messaging-schema-avro.md#L254 이다.
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module: messaging-schema-avro
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---
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# 쓰기 스키마와 읽기 스키마를 둘 다 넘기는 경로
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encode: schemaFor → GenericRecord 확인 → 스키마 동일성 확인 → BoundedByteSink + direct encoder → writer.write + flush → EncodedMessage(bytes, AVRO, SchemaReference) decode(동일 버전): requireWithinLimit → schemaFor → 대상 타입이 GenericRecord 계열인지 → boundedReader(writer, writer) → reader.read decodeEvolved: requireWithinLimit → schemaFor(writer) + schemaFor(reader) → boundedReader(writer, reader) → reader.read CI 게이트: check(candidate, history, mode) → 모드에 따라 비교 대상 선정 → 방향별 checkReaderWriterCompatibility
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## 관계
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- **모드 enum을 분기 조건으로 쓰면 각 분기에 테스트를 둔다**
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같은 분석 리프에서 끌어낸 규칙이다.
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- **컬렉션 순서가 계약이면 양쪽에서 같은 방향으로 적는다**
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같은 분석 리프에서 끌어낸 규칙이다.
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- **안정 코드는 판단 단위로 정하고 구현 단위로 정하지 않는다**
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같은 분석 리프에서 끌어낸 규칙이다.
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## 본문
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<!-- body:start -->
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네 경로가 있다.
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**encode:** `schemaFor` → `GenericRecord` 확인 → 스키마 동일성 확인 → `BoundedByteSink` + direct encoder → `writer.write` + `flush` → `EncodedMessage(bytes, AVRO, SchemaReference)`
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**decode(동일 버전):** `requireWithinLimit` → `schemaFor` → 대상 타입이 `GenericRecord` 계열인지 → `boundedReader(writer, writer)` → `reader.read`
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**decodeEvolved:** `requireWithinLimit` → `schemaFor(writer)` + `schemaFor(reader)` → `boundedReader(writer, reader)` → `reader.read`
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**CI 게이트:** `check(candidate, history, mode)` → 모드에 따라 비교 대상 선정 → 방향별 `checkReaderWriterCompatibility`
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## GenericRecord 참조 위치
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:::evidence key="messaging-schema-avro-c04" alt="코드베이스에서 GenericRecord 를 검색한 출력 29줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="GenericRecord 코드베이스 검색 — 29줄 · exit 0" zoom="true"
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:::
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<!-- body:end -->
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