Feat/18/domain events 도메인 이벤트 로그 기록 구현 (EVT-001)

[ohhalim]

Summary

• 도메인 이벤트 로그 기록 구현 (EVT-001)
• 주문/체결/정산/취소 시점에 domain_events 테이블에 이벤트 저장
• 향후 Kafka, outbox pattern, replay 확장을 위한 경계 확보

변경 내용

• DomainEventType — 6개 이벤트 타입 enum
• DomainEvent — 엔티티 (기존 V3 마이그레이션 테이블 활용)
• DomainEventRepository — JpaRepository
• DomainEventRecorder — ObjectMapper로 JSON 직렬화 후 저장
• OrderService — 이벤트 기록 연결

기록 시점

이벤트	시점
ORDER_ACCEPTED	주문 저장 직후
ORDER_PARTIALLY_FILLED	부분 체결 직후
ORDER_FILLED	전량 체결 직후
ORDER_CANCELED	취소 처리 직후
TRADE_CREATED	Trade 저장 직후
SETTLEMENT_COMPLETED	지갑 정산 완료 직후

Test plan

• 도메인 이벤트 저장 통합 테스트 4개 통과
• 전체 테스트 53개 통과 (회귀 없음)

관련 이슈

closes #18

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 18335605-8bd2-4f27-8f9d-7fed2ee2bf26

📥 Commits

Reviewing files that changed from the base of the PR and between 9563e93 and e0f3075.

📒 Files selected for processing (6)

• src/main/java/com/coinflow/event/domain/DomainEvent.java
• src/main/java/com/coinflow/event/domain/DomainEventType.java
• src/main/java/com/coinflow/event/repository/DomainEventRepository.java
• src/main/java/com/coinflow/event/service/DomainEventRecorder.java
• src/main/java/com/coinflow/order/service/OrderService.java
• src/test/java/com/coinflow/integration/DomainEventTest.java

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/18/domain-events

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