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>
45 lines
2.3 KiB
Markdown
45 lines
2.3 KiB
Markdown
---
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kind: CONCEPT
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slug: adapter-outbound-objectstorage-c04
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title: 새 레코드를 추가하면 컴파일이 codec 갱신을 강제한다
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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:adapter-outbound-objectstorage-c04
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evidenceCapturedOn: 2026-09-01
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assets:
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- key: adapter-outbound-objectstorage-c04
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file: ../../../final/evidence/rendered/adapter-outbound-objectstorage-c04.svg
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evidence:
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- ../../../final/evidence/raw/adapter-outbound-objectstorage-c04.txt
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source:
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- 원본 분석 절은 analysis/09-adapter-outbound-objectstorage.md#L173 이다.
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module: adapter-outbound-objectstorage
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---
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# 새 레코드를 추가하면 컴파일이 codec 갱신을 강제한다
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`ObjectControlRecord`가 sealed이고 codec이 exhaustive switch를 쓰므로 계열이 닫혀 있고, 모르는 스키마는 덮어쓰지 않고 격리된다.
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## 본문
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<!-- body:start -->
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`ObjectControlRecord`는 열한 개 구현만 허용하는 `sealed interface`이고, javadoc이 규칙을 적는다 — "Unknown families and schemas fail closed." codec의 `payload(...)`가 그 계열에 대해 **exhaustive switch**를 쓰므로, 새 레코드를 추가하면 컴파일이 강제로 codec을 갱신하게 만든다.
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## ObjectControlRecord 참조 위치
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:::evidence key="adapter-outbound-objectstorage-c04" alt="코드베이스에서 ObjectControlRecord 를 검색한 출력 35줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="ObjectControlRecord 코드베이스 검색 — 35줄 · exit 0" zoom="true"
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:::
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## 모르는 스키마는 덮어쓰지 않고 격리한다
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스키마 버전은 `ControlRecordSupport.header`가 `schemaVersion != 1`을 거부한다 — "only control schema version 1 is writable". 더 새로운 스키마를 만나면 `UnsupportedObjectControlSchemaException`으로 격리한다("A newer or unknown durable schema that must be quarantined rather than overwritten").
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## 누출 금지가 가시성으로 성립한다
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`objectstorage.control` 패키지를 leaf 밖에서 참조하는 코드는 **0**이다(`151-...` §8.1, exit=1). CLAUDE.md의 "control-record types leaking into application-core" 금지가 가시성으로 성립한다.
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<!-- body:end -->
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