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
2.5 KiB
Markdown
45 lines
2.5 KiB
Markdown
---
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kind: CONCEPT
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slug: adapter-outbound-messaging-c02
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title: 봉투를 쓰는 경로에 JSON 파서도 생성기도 없다
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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-messaging-c02
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evidenceCapturedOn: 2026-09-01
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assets:
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- key: adapter-outbound-messaging-c02
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file: ../../../final/evidence/rendered/adapter-outbound-messaging-c02.svg
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evidence:
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- ../../../final/evidence/raw/adapter-outbound-messaging-c02.txt
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source:
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- 원본 분석 절은 analysis/12-adapter-outbound-messaging.md#L189 이다.
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module: adapter-outbound-messaging
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---
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# 봉투를 쓰는 경로에 JSON 파서도 생성기도 없다
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`DeterministicEnvelopeWriter`가 페이로드를 선언된 shape대로 스냅샷해 그 바이트를 리터럴로 이어 붙이므로, 같은 키로 다른 바이트가 나오는 경로가 구조적으로 없다.
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## 본문
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<!-- body:start -->
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`DeterministicEnvelopeWriter`는 페이로드를 **선언된 shape을 따라 스냅샷**한 뒤 그 정확한 바이트를 봉투에 끼워 넣는다 — "those exact trusted bytes are then embedded in the envelope **without any raw JSON parser or generator API**." `embedExactPayload`가 `,"payload":` 리터럴로 이어 붙이는 방식이다.
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## DeterministicEnvelopeWriter 참조 위치
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:::evidence key="adapter-outbound-messaging-c02" alt="코드베이스에서 DeterministicEnvelopeWriter 를 검색한 출력 11줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="DeterministicEnvelopeWriter 코드베이스 검색 — 11줄 · exit 0" zoom="true"
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:::
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## 입력이 통과해야 하는 것
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draft의 페이로드가 **정확히 등록된 final record 클래스**여야 하고(`exactPayloadClassIsRequiredAndNoAssignableTypeSearchOccurs`), contractId와 payloadVersion이 컴파일된 계약과 같아야 하며, 레코드 성분 수·문자열 UTF-8 길이·배열/객체 크기·깊이가 모두 `EnvelopeAdmissionLimits`로 유계다. 그리고 **쓰는 도중에** 출력 크기를 본다(`boundsJsonOutputDuringWritesInsteadOfOnlyInspectingTheCompletedBuffer`).
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## 접근자를 한 번만 부른다
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가변 페이로드 처리도 명시적이다 — `snapshotsStatefulMutablePayloadAccessorsOnceAndEmbedsThoseExactBytes`. 접근자를 한 번만 부르고 그 바이트를 고정하므로, httpclient의 `ObjectBody` 문제(같은 키로 다른 바이트)가 여기서는 구조적으로 불가능하다.
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<!-- body:end -->
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