Backend #1 из pending-endpoints brief. Frontend HistoryTabContent +
TimeTravelModal используют этот endpoint для отображения версий схемы
во времени с per-version property-level diff summary.
Implementation:
- AuditLogger.definitionCreated / definitionUpdated — пишет в audit_log
с event_type DEFINITION_CREATED / DEFINITION_UPDATED. payload_before/
after = JsonNode schema. record_id / business_key — NULL (dict-level event).
- DictionaryDefinitionService.create / updateSchema hook в audit logger
(autowired, null-safe для tests).
- AuditLogRepository.findByDictionaryIdAndEventTypes — query by dict_id +
event_type IN (...), ORDER BY event_time DESC, paginated.
- ChangelogService.findChangelog — собирает entries, computes top-level
property-key diff (added/removed/changed). Первая entry (newest) =
isCurrent + schemaVersion из DictionaryDefinition; старые entries
возвращают version=null (semver-в-аудит backfill — separate migration).
- DictionaryChangelogController — GET /dictionaries/{name}/changelog?limit=50
Errors:
- 404 dictionary_not_found когда dict missing OR scope hidden (consistent
с другими endpoints).
Tests +9: dict-not-found, scope-hidden, empty-audit, first-is-current,
diff-added/removed/changed/null-before/identical.
Zimin A.N.
ebc90d76e9