[FEAT] 바이낸스 api 재연결 기능 추가

[moonwhistle]

📌 Summary

바이낸스 api 24시간 후 자동으로 끊기는 문제로 인해 23시간 50분에 재연결 기능 추가
예외처리 시 연결 복구 기능 추가

📚 Changes

📝 Note

📌 Related Issue

• Closes [FEAT] 바이낸스 api 재연결 기능 추가 #89

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 46007c32-dc3c-403e-b42f-c18b92195942

📥 Commits

Reviewing files that changed from the base of the PR and between 0254e7a and 59d84bc.

📒 Files selected for processing (1)

• backend/coinflow-collector-app/src/main/java/com/coinflow/client/binance/BinanceWebSocketClient.java

📝 Walkthrough

Walkthrough

Binance WebSocket 클라이언트가 단일 연결 방식에서 재연결 관리 방식으로 변경되었습니다. 클라이언트는 현재 연결과 연결 상태를 추적합니다. 서버 종료 이벤트, 연결 종료, 오류 발생 시 지수 백오프와 지터를 사용해 재연결합니다. 연결 성공 후 약 23시간 50분 뒤 선제적 재연결을 예약합니다. disconnect()는 연결과 예약 작업을 중단합니다. 오래된 클라이언트의 콜백은 재연결을 시작하지 않습니다.

Estimated code review effort: 4 (Complex) | ~45 minutes

Mergeability Score: 🟠 High · up to 0254e

재연결 로직이 이전 WebSocket의 늦은 콜백과 대기 중인 재연결 작업을 차단하지 않아 정상 연결이 예기치 않게 교체되거나 종료될 수 있습니다. 이로 인해 실시간 데이터 수집이 중단될 수 있으므로, 현재 상태로는 병합 전에 수명주기 검증과 예약 작업 취소를 보완해야 합니다.

Sequence Diagram(s)

sequenceDiagram
  participant BinanceWebSocketClient
  participant WebSocketClient
  participant ScheduledExecutorService

  BinanceWebSocketClient->>WebSocketClient: 연결 생성
  WebSocketClient-->>BinanceWebSocketClient: 연결 성공
  BinanceWebSocketClient->>ScheduledExecutorService: 선제적 재연결 예약
  WebSocketClient-->>BinanceWebSocketClient: 서버 종료 또는 오류 전달
  BinanceWebSocketClient->>ScheduledExecutorService: 백오프 재연결 예약
  ScheduledExecutorService->>BinanceWebSocketClient: 재연결 실행
  BinanceWebSocketClient->>WebSocketClient: 기존 클라이언트 종료
  BinanceWebSocketClient->>WebSocketClient: 새 클라이언트 연결

Loading

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	구현이 이슈 #89의 Binance API 재연결 기능 요구사항을 충족합니다.
Out of Scope Changes check	✅ Passed	변경 사항은 Binance WebSocket 연결 종료, 오류 복구, 선제적 재연결 범위에 포함됩니다.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	제목은 Binance API의 재연결 기능 추가라는 주요 변경 사항을 명확하게 설명합니다.
Description check	✅ Passed	설명은 Binance API의 자동 재연결과 예외 발생 시 연결 복구 변경 사항을 직접 설명합니다.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/#89

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In
`@backend/coinflow-collector-app/src/main/java/com/coinflow/client/binance/BinanceWebSocketClient.java`:
- Around line 73-76: Update BinanceWebSocketClient.onOpen so it acquires
lifecycleLock and proceeds only when not stopped and client == this; only then
reset reconnect state and call scheduleProactiveReconnect. Store the delayed
reconnect ScheduledFuture and cancel and clear it when the current client opens,
preventing stale queued reconnects from replacing the active connection.

Apply the same fix in
`@backend/coinflow-collector-app/src/main/java/com/coinflow/client/binance/BinanceWebSocketClient.java`
around lines 74 - 75: The same stale-callback and uncancelled-reconnect-task
race is covered by the consolidated comment.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 243b6eeb-15a7-496b-af44-7b72bdf8dbce

📥 Commits

Reviewing files that changed from the base of the PR and between 3acd992 and 0254e7a.

📒 Files selected for processing (1)

• backend/coinflow-collector-app/src/main/java/com/coinflow/client/binance/BinanceWebSocketClient.java