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@pmh5574 pmh5574 commented Dec 19, 2025

๐Ÿ“Œ Summary

๐Ÿ’ฌ Review Points

โœ… Checklist

๐Ÿ“Ž References

Summary by CodeRabbit

๋ฆด๋ฆฌ์Šค ๋…ธํŠธ

  • New Features
    • ๊ฒฐ์ œ ์„ฑ๊ณต ๋ฐ ์‹คํŒจ ์ด๋ฒคํŠธ ๋ฐœํ–‰ ์‹œ์Šคํ…œ ์ถ”๊ฐ€
    • ์ด๋ฒคํŠธ ๊ธฐ๋ฐ˜ ๋ฉ”์‹œ์ง€ ์ฒ˜๋ฆฌ ์ธํ”„๋ผ ๊ตฌํ˜„
    • Kafka๋ฅผ ํ†ตํ•œ ๋น„๋™๊ธฐ ์ด๋ฒคํŠธ ํ๋ฆ„ ์ง€์›

โœ๏ธ Tip: You can customize this high-level summary in your review settings.

@pmh5574 pmh5574 requested a review from chapakook December 19, 2025 04:48
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์š”์•ฝ

๊ฒฐ์ œ ๋„๋ฉ”์ธ์— ์ด๋ฒคํŠธ ๊ธฐ๋ฐ˜ ์•„ํ‚คํ…์ฒ˜๋ฅผ ๋„์ž…ํ•˜๋Š” ๋ณ€๊ฒฝ์‚ฌํ•ญ์ž…๋‹ˆ๋‹ค. Kafka ๋ชจ๋“ˆ์„ ์˜์กด์„ฑ์— ์ถ”๊ฐ€ํ•˜๊ณ , ๊ฒฐ์ œ ์„ฑ๊ณต/์‹คํŒจ ์ด๋ฒคํŠธ๋ฅผ ์ •์˜ํ•œ ํ›„ Kafka๋ฅผ ํ†ตํ•ด ๋ฐœํ–‰ํ•ฉ๋‹ˆ๋‹ค. ์ฃผ๋ฌธ๊ณผ ์ƒํ’ˆ ๋„๋ฉ”์ธ์˜ ์ด๋ฒคํŠธ ๋ฆฌ์Šค๋„ˆ๊ฐ€ ์ด๋Ÿฌํ•œ ์ด๋ฒคํŠธ๋ฅผ ์†Œ๋น„ํ•ฉ๋‹ˆ๋‹ค.

Walkthrough

๊ฒฐ์ œ ๊ฒฐ๊ณผ๋ฅผ Kafka ๊ธฐ๋ฐ˜ ์ด๋ฒคํŠธ๋กœ ๋ฐœํ–‰ํ•˜๋Š” ๊ธฐ๋Šฅ์ด ์ถ”๊ฐ€๋ฉ๋‹ˆ๋‹ค. PaymentEvent์™€ PaymentEventPublisher๊ฐ€ ๋„๋ฉ”์ธ ๊ณ„์ธต์—์„œ ์ •์˜๋˜๊ณ , PaymentCoreEventPublisher๊ฐ€ ์ด๋ฅผ ๊ตฌํ˜„ํ•˜์—ฌ Kafka ํ† ํ”ฝ์— ๋ฉ”์‹œ์ง€๋ฅผ ๋ฐœํ–‰ํ•ฉ๋‹ˆ๋‹ค. PaymentFacade๊ฐ€ ์ˆ˜์ •๋˜์–ด ๊ฒฐ์ œ ์„ฑ๊ณต/์‹คํŒจ ์‹œ ํ•ด๋‹น ์ด๋ฒคํŠธ๋ฅผ ๋ฐœํ–‰ํ•˜๋ฉฐ, ์ฃผ๋ฌธ๊ณผ ์ƒํ’ˆ ๋ฆฌ์Šค๋„ˆ๊ฐ€ ์ด๋ฒคํŠธ๋ฅผ ์†Œ๋น„ํ•ฉ๋‹ˆ๋‹ค.

Changes

Cohort / File(s) ๋ณ€๊ฒฝ ์š”์•ฝ
๋นŒ๋“œ ๋ฐ ์„ค์ •
apps/commerce-api/build.gradle.kts, modules/kafka/src/main/resources/kafka.yml
Kafka ๋ชจ๋“ˆ ์˜์กด์„ฑ ์ถ”๊ฐ€, Kafka ํ”„๋กœ๋“€์„œ idempotence ํ™œ์„ฑํ™” ๋ฐ acks ์„ค์ •
๋„๋ฉ”์ธ ๊ณ„์ธต - ์ด๋ฒคํŠธ ์ •์˜
apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEvent.java, apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEventPublisher.java
PaymentPaid ๋ฐ PaymentFailed ๋ ˆ์ฝ”๋“œ๋ฅผ ๋‹ด์€ PaymentEvent ํด๋ž˜์Šค์™€ ์ด๋ฒคํŠธ ๋ฐœํ–‰ ์ธํ„ฐํŽ˜์ด์Šค ์ƒ์„ฑ
์ธํ”„๋ผ ๊ณ„์ธต - ์ด๋ฒคํŠธ ๋ฐœํ–‰์ž
apps/commerce-api/src/main/java/com/loopers/infrastructure/payment/PaymentCoreEventPublisher.java
PaymentEventPublisher ๊ตฌํ˜„์ฒด๋กœ์„œ KafkaTemplate์„ ์‚ฌ์šฉํ•ด payment.paid ๋ฐ payment.failed ํ† ํ”ฝ์— ์ด๋ฒคํŠธ ๋ฐœํ–‰
์• ํ”Œ๋ฆฌ์ผ€์ด์…˜ ๊ณ„์ธต
apps/commerce-api/src/main/java/com/loopers/application/payment/PaymentFacade.java
PaymentEventPublisher ์˜์กด์„ฑ ์ฃผ์ž…, ๊ฒฐ์ œ ์„ฑ๊ณต/์‹คํŒจ ์‹œ ํ•ด๋‹น ์ด๋ฒคํŠธ ๋ฐœํ–‰ ๋กœ์ง ์ถ”๊ฐ€
์ธํ„ฐํŽ˜์ด์Šค ๊ณ„์ธต - ์ด๋ฒคํŠธ ๋ฆฌ์Šค๋„ˆ
apps/commerce-api/src/main/java/com/loopers/interfaces/event/order/OrderEventListener.java, apps/commerce-api/src/main/java/com/loopers/interfaces/event/product/ProductEventListener.java
payment.paid ํ† ํ”ฝ์—์„œ ๋ฐฐ์น˜ ๋ชจ๋“œ๋กœ ๋ฉ”์‹œ์ง€๋ฅผ ์ˆ˜์‹ ํ•˜๋Š” Kafka ๋ฆฌ์Šค๋„ˆ ํด๋ž˜์Šค ์ถ”๊ฐ€

Sequence Diagram

sequenceDiagram
    participant Client
    participant PaymentFacade
    participant PaymentEventPublisher
    participant KafkaTemplate
    participant Kafka
    participant OrderListener
    participant ProductListener

    Client->>PaymentFacade: processPayment()
    
    alt Payment Success
        PaymentFacade->>PaymentEventPublisher: publish(PaymentPaid)
        PaymentEventPublisher->>KafkaTemplate: send(payment.paid topic)
        KafkaTemplate->>Kafka: publish message
        
        Kafka->>OrderListener: consume message (batch)
        Kafka->>ProductListener: consume message (batch)
        
        OrderListener->>OrderListener: process & acknowledge
        ProductListener->>ProductListener: process & acknowledge
    else Payment Failed
        PaymentFacade->>PaymentEventPublisher: publish(PaymentFailed)
        PaymentEventPublisher->>KafkaTemplate: send(payment.failed topic)
        KafkaTemplate->>Kafka: publish message
    end
Loading

Estimated code review effort

๐ŸŽฏ 3 (Moderate) | โฑ๏ธ ~25 minutes

  • ์ฃผ์˜ ํ•„์š” ์˜์—ญ:
    • PaymentFacade ์ˆ˜์ •: ์ƒ์„ฑ์ž ์„œ๋ช… ๋ณ€๊ฒฝ์œผ๋กœ ์ธํ•œ ์˜์กด์„ฑ ์ฃผ์ž… ํ™•์ธ ํ•„์š”
    • ์ด๋ฒคํŠธ ๋ฆฌ์Šค๋„ˆ ๊ตฌํ˜„: ํ˜„์žฌ ๋ฉ”์‹œ์ง€๋ฅผ ์ฒ˜๋ฆฌํ•˜์ง€ ์•Š๊ณ  ์ฆ‰์‹œ acknowledgeํ•˜๋ฏ€๋กœ ์‹ค์ œ ๋น„์ฆˆ๋‹ˆ์Šค ๋กœ์ง ๊ตฌํ˜„ ํ•„์š” ์—ฌ๋ถ€ ๊ฒ€ํ† 
    • Kafka ํ† ํ”ฝ๋ช… ์ผ๊ด€์„ฑ: payment.paid/payment.failed ํ† ํ”ฝ๋ช…์ด ๋ชจ๋“  ๊ตฌ์„ฑ์š”์†Œ์—์„œ ๋™์ผํ•˜๊ฒŒ ์‚ฌ์šฉ๋˜๋Š”์ง€ ํ™•์ธ
    • ๋ฐฐ์น˜ ๋ฆฌ์Šค๋„ˆ ์„ค์ •: KafkaConfig.BATCH_LISTENER ์„ค์ •์˜ ์ ์ ˆ์„ฑ ๊ฒ€ํ† 

Possibly related PRs

Suggested labels

enhancement

Poem

๐Ÿฐ ๊ฒฐ์ œ์˜ ์„ฑ๊ณต์ด ์ด์ œ ์šธ๋ ค ํผ์ง€๊ณ ,
์นดํ”„์นด์˜ ํ๋ฆ„์„ ๋”ฐ๋ผ ํ˜๋Ÿฌ๊ฐ€๋„ค.
์ฃผ๋ฌธ๊ณผ ์ƒํ’ˆ์ด ๊ท€๋ฅผ ์ซ‘๊ธ‹์„ธ์šฐ๋ฉฐ,
์ด๋ฒคํŠธ์˜ ์ถค์„ ํ•จ๊ป˜ ์ถ”๋‚˜๋‹ˆ,
๋ฉ”์‹œ์ง€ ํ•œ ์ ์ด ์„ธ์ƒ์„ ์ž‡๋Š”๊ตฌ๋‚˜! โœจ

Pre-merge checks and finishing touches

โŒ Failed checks (2 warnings)
Check name Status Explanation Resolution
Description check โš ๏ธ Warning PR ์„ค๋ช…์€ ํ…œํ”Œ๋ฆฟ ๊ตฌ์กฐ๋ฅผ ๋”ฐ๋ฅด๊ณ  ์žˆ์ง€๋งŒ, ๋ชจ๋“  ํ•„์ˆ˜ ์„น์…˜(Summary, Review Points, Checklist, References)์ด ๋‚ด์šฉ ์—†์ด ๋น„์–ด์žˆ์Šต๋‹ˆ๋‹ค. Summary ์„น์…˜์— ๋ณ€๊ฒฝ ์‚ฌํ•ญ ์š”์•ฝ, Review Points์— ๊ตฌ์ฒด์ ์ธ ๊ฒ€ํ†  ํฌ์ธํŠธ, Checklist์— ์™„๋ฃŒ ํ•ญ๋ชฉ ์ฒดํฌ, References์— ๊ด€๋ จ ๋ฌธ์„œ๋ฅผ ์ถ”๊ฐ€ํ•ด์ฃผ์„ธ์š”.
Docstring Coverage โš ๏ธ Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. You can run @coderabbitai generate docstrings to improve docstring coverage.
โœ… Passed checks (1 passed)
Check name Status Explanation
Title check โœ… Passed PR ์ œ๋ชฉ์€ ์ฃผ์š” ๋ณ€๊ฒฝ ์‚ฌํ•ญ์ธ 'Kafka๋ฅผ ํ†ตํ•œ ๋””์ปคํ”Œ๋ง'์„ ๋ช…ํ™•ํ•˜๊ฒŒ ์š”์•ฝํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ๋ณ€๊ฒฝ ์‚ฌํ•ญ ์ „์ฒด์™€ ์ง์ ‘์ ์œผ๋กœ ๊ด€๋ จ์ด ์žˆ์Šต๋‹ˆ๋‹ค.

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Actionable comments posted: 1

๐Ÿงน Nitpick comments (5)
apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEventPublisher.java (2)

3-3: import ์Šคํƒ€์ผ์˜ ์ผ๊ด€์„ฑ์„ ๊ฐœ์„ ํ•˜์„ธ์š”.

PaymentPaid๋Š” ๋ช…์‹œ์ ์œผ๋กœ import๋˜์–ด ์‚ฌ์šฉ๋˜์ง€๋งŒ, PaymentFailed๋Š” ์™„์ „ํ•œ ํŒจํ‚ค์ง€ ๊ฒฝ๋กœ๋กœ ์ฐธ์กฐ๋ฉ๋‹ˆ๋‹ค. ์ผ๊ด€์„ฑ์„ ์œ„ํ•ด ๋‘ ์ด๋ฒคํŠธ ํƒ€์ž… ๋ชจ๋‘ ๋™์ผํ•œ ๋ฐฉ์‹์œผ๋กœ importํ•˜๋Š” ๊ฒƒ์„ ๊ถŒ์žฅํ•ฉ๋‹ˆ๋‹ค.

๐Ÿ”Ž ์ˆ˜์ • ์ œ์•ˆ
 package com.loopers.domain.payment;
 
 import com.loopers.domain.payment.PaymentEvent.PaymentPaid;
+import com.loopers.domain.payment.PaymentEvent.PaymentFailed;
 
 public interface PaymentEventPublisher {
     void publish(PaymentPaid paymentCreated);
-    void publish(PaymentEvent.PaymentFailed paymentFailed);
+    void publish(PaymentFailed paymentFailed);
 }

Also applies to: 7-7


6-6: ๋ฉ”์„œ๋“œ ํŒŒ๋ผ๋ฏธํ„ฐ ์ด๋ฆ„์„ ์ˆ˜์ •ํ•˜์„ธ์š”.

์ฒซ ๋ฒˆ์งธ publish ๋ฉ”์„œ๋“œ์˜ ํŒŒ๋ผ๋ฏธํ„ฐ ์ด๋ฆ„์ด paymentCreated์ธ๋ฐ, ์‹ค์ œ๋กœ๋Š” PaymentPaid ํƒ€์ž…์„ ๋ฐ›์Šต๋‹ˆ๋‹ค. ํŒŒ๋ผ๋ฏธํ„ฐ ์ด๋ฆ„์„ paymentPaid๋กœ ๋ณ€๊ฒฝํ•˜์—ฌ ํƒ€์ž…๊ณผ ์ผ์น˜์‹œํ‚ค๋Š” ๊ฒƒ์ด ๋ช…ํ™•ํ•ฉ๋‹ˆ๋‹ค.

๐Ÿ”Ž ์ˆ˜์ • ์ œ์•ˆ
-    void publish(PaymentPaid paymentCreated);
+    void publish(PaymentPaid paymentPaid);
apps/commerce-api/src/main/java/com/loopers/interfaces/event/product/ProductEventListener.java (1)

13-24: ์ด๋ฒคํŠธ ์ฒ˜๋ฆฌ ๋กœ์ง ๊ตฌํ˜„์ด ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.

๋ฆฌ์Šค๋„ˆ๊ฐ€ ๋ฐฐ์น˜ ๋ชจ๋“œ๋กœ ์˜ฌ๋ฐ”๋ฅด๊ฒŒ ์„ค์ •๋˜์—ˆ์ง€๋งŒ, ๋ฉ”์‹œ์ง€ ์ฒ˜๋ฆฌ ๋กœ์ง์ด ์ฃผ์„ ์ฒ˜๋ฆฌ๋˜์–ด ์ฆ‰์‹œ acknowledgment๋งŒ ์ˆ˜ํ–‰ํ•ฉ๋‹ˆ๋‹ค. ๊ฒฐ์ œ ์™„๋ฃŒ ์ด๋ฒคํŠธ์— ๋Œ€ํ•œ ์ƒํ’ˆ ๊ด€๋ จ ๋น„์ฆˆ๋‹ˆ์Šค ๋กœ์ง(์˜ˆ: ์žฌ๊ณ  ์—…๋ฐ์ดํŠธ, ํ†ต๊ณ„ ์ง‘๊ณ„ ๋“ฑ)์„ ๊ตฌํ˜„ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.

Based on learnings, ์ด ์ฝ”๋“œ๋ฒ ์ด์Šค์—์„œ๋Š” Kafka ์ปจ์Šˆ๋จธ๊ฐ€ ์—๋Ÿฌ ์ฒ˜๋ฆฌ๋ฅผ EventInboxAspect๋ฅผ ํ†ตํ•ด ์„œ๋น„์Šค ๋ ˆ์ด์–ด์— ์œ„์ž„ํ•˜๋ฏ€๋กœ, ์„œ๋น„์Šค ๋ฉ”์„œ๋“œ์— @InboxEvent ์• ๋…ธํ…Œ์ด์…˜์„ ์ถ”๊ฐ€ํ•˜์—ฌ ์‹คํŒจ ์‹œ ์ž๋™์œผ๋กœ ์ฒ˜๋ฆฌ๋˜๋„๋ก ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์ด๋ฒคํŠธ ์ฒ˜๋ฆฌ ๋กœ์ง ๊ตฌํ˜„์„ ๋„์™€๋“œ๋ฆด๊นŒ์š”? ๋˜๋Š” ์ด ์ž‘์—…์„ ์ถ”์ ํ•  ์ด์Šˆ๋ฅผ ์ƒ์„ฑํ•˜์‹œ๊ฒ ์Šต๋‹ˆ๊นŒ?

apps/commerce-api/src/main/java/com/loopers/interfaces/event/order/OrderEventListener.java (1)

13-24: ์ฃผ๋ฌธ ์ด๋ฒคํŠธ ์ฒ˜๋ฆฌ ๋กœ์ง ๊ตฌํ˜„์ด ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.

ProductEventListener์™€ ๋™์ผํ•œ ํŒจํ„ด์œผ๋กœ, ๋ฉ”์‹œ์ง€ ์ฒ˜๋ฆฌ ๋กœ์ง์ด ์ฃผ์„ ์ฒ˜๋ฆฌ๋˜์–ด ์žˆ์Šต๋‹ˆ๋‹ค. ๊ฒฐ์ œ ์™„๋ฃŒ ์ด๋ฒคํŠธ์— ๋Œ€ํ•œ ์ฃผ๋ฌธ ๊ด€๋ จ ๋น„์ฆˆ๋‹ˆ์Šค ๋กœ์ง(์˜ˆ: ์ฃผ๋ฌธ ์ƒํƒœ ์—…๋ฐ์ดํŠธ, ์•Œ๋ฆผ ๋ฐœ์†ก ๋“ฑ)์„ ๊ตฌํ˜„ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.

payment.paid ํ† ํ”ฝ์„ ๊ตฌ๋…ํ•˜๋Š” ์—ฌ๋Ÿฌ ์ปจ์Šˆ๋จธ ๊ทธ๋ฃน(order, product)์ด ์กด์žฌํ•˜์—ฌ ํŒฌ์•„์›ƒ ํŒจํ„ด์„ ์˜ฌ๋ฐ”๋ฅด๊ฒŒ ๊ตฌํ˜„ํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.

Based on learnings, EventInboxAspect๋ฅผ ํ™œ์šฉํ•œ ์—๋Ÿฌ ์ฒ˜๋ฆฌ๋ฅผ ์œ„ํ•ด ์„œ๋น„์Šค ๋ฉ”์„œ๋“œ์— @InboxEvent ์• ๋…ธํ…Œ์ด์…˜์„ ์ถ”๊ฐ€ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

apps/commerce-api/src/main/java/com/loopers/infrastructure/payment/PaymentCoreEventPublisher.java (1)

14-15: ํ† ํ”ฝ ์ด๋ฆ„์„ ์„ค์ • ํŒŒ์ผ๋กœ ์™ธ๋ถ€ํ™”ํ•˜์„ธ์š”.

ํ•˜๋“œ์ฝ”๋”ฉ๋œ ํ† ํ”ฝ ์ด๋ฆ„์€ ํ™˜๊ฒฝ๋ณ„๋กœ ๋‹ค๋ฅธ ํ† ํ”ฝ์„ ์‚ฌ์šฉํ•˜๊ฑฐ๋‚˜ ํ† ํ”ฝ ์ด๋ฆ„์„ ๋ณ€๊ฒฝํ•  ๋•Œ ์ฝ”๋“œ ์ˆ˜์ •์ด ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค. application.yml ๋˜๋Š” ๋ณ„๋„์˜ ์„ค์ • ํด๋ž˜์Šค๋กœ ์™ธ๋ถ€ํ™”ํ•˜๋Š” ๊ฒƒ์„ ๊ถŒ์žฅํ•ฉ๋‹ˆ๋‹ค.

๐Ÿ”Ž ์„ค์ • ์™ธ๋ถ€ํ™” ์˜ˆ์‹œ

application.yml์— ์ถ”๊ฐ€:

payment:
  kafka:
    topics:
      paid: payment.paid
      failed: payment.failed

์ฝ”๋“œ ์ˆ˜์ •:

+@Value("${payment.kafka.topics.paid}")
-private static final String paidTopic = "payment.paid";
+private final String paidTopic;

+@Value("${payment.kafka.topics.failed}")
-private static final String failedTopic = "payment.failed";
+private final String failedTopic;
๐Ÿ“œ Review details

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

๐Ÿ“ฅ Commits

Reviewing files that changed from the base of the PR and between 5968dc0 and 6b1c348.

๐Ÿ“’ Files selected for processing (8)
  • apps/commerce-api/build.gradle.kts (1 hunks)
  • apps/commerce-api/src/main/java/com/loopers/application/payment/PaymentFacade.java (4 hunks)
  • apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEvent.java (1 hunks)
  • apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEventPublisher.java (1 hunks)
  • apps/commerce-api/src/main/java/com/loopers/infrastructure/payment/PaymentCoreEventPublisher.java (1 hunks)
  • apps/commerce-api/src/main/java/com/loopers/interfaces/event/order/OrderEventListener.java (1 hunks)
  • apps/commerce-api/src/main/java/com/loopers/interfaces/event/product/ProductEventListener.java (1 hunks)
  • modules/kafka/src/main/resources/kafka.yml (1 hunks)
๐Ÿงฐ Additional context used
๐Ÿง  Learnings (5)
๐Ÿ““ Common learnings
Learnt from: HongChangMo
Repo: Loopers-dev-lab/loopers-spring-java-template PR: 156
File: apps/pg-simulator/src/main/kotlin/com/loopers/interfaces/api/payment/PaymentApi.kt:51-59
Timestamp: 2025-12-05T04:37:02.942Z
Learning: User HongChangMo prefers to skip detailed code reviews for the pg-simulator module (apps/pg-simulator/**) in the loopers-spring-java-template repository.
๐Ÿ“š Learning: 2025-12-18T13:24:54.339Z
Learnt from: kilian-develop
Repo: Loopers-dev-lab/loopers-spring-java-template PR: 190
File: apps/commerce-streamer/src/main/java/com/loopers/applications/streamer/consumer/product/IncreaseProductViewKafkaConsumer.java:25-35
Timestamp: 2025-12-18T13:24:54.339Z
Learning: In this codebase, Kafka consumers delegate error handling and event tracking to the service layer via EventInboxAspect. Service methods annotated with InboxEvent are intercepted by the aspect, which handles failures by saving failed EventInbox entries and logging errors. This centralized approach avoids duplicating error handling logic across multiple consumers.

Applied to files:

  • apps/commerce-api/src/main/java/com/loopers/interfaces/event/order/OrderEventListener.java
  • apps/commerce-api/src/main/java/com/loopers/interfaces/event/product/ProductEventListener.java
๐Ÿ“š Learning: 2025-12-18T01:01:55.894Z
Learnt from: jikimee64
Repo: Loopers-dev-lab/loopers-spring-kotlin-template PR: 65
File: modules/kafka/src/main/resources/kafka.yml:25-32
Timestamp: 2025-12-18T01:01:55.894Z
Learning: In Spring Boot Kafka configuration YAML, properties inside spring.kafka.producer.properties and spring.kafka.consumer.properties maps must use exact Kafka client property names with dot notation, and must be quoted with bracket notation like "[enable.idempotence]": true and "[enable.auto.commit]": false to prevent YAML from parsing dots as nested keys. Spring Boot's relaxed binding only applies to top-level Spring Kafka properties, not to the properties map.

Applied to files:

  • modules/kafka/src/main/resources/kafka.yml
๐Ÿ“š Learning: 2025-12-07T12:45:45.556Z
Learnt from: toongri
Repo: Loopers-dev-lab/loopers-spring-kotlin-template PR: 52
File: apps/commerce-api/src/main/kotlin/com/loopers/domain/payment/Payment.kt:160-181
Timestamp: 2025-12-07T12:45:45.556Z
Learning: In the Payment.confirmPayment method in com.loopers.domain.payment.Payment, the when-branch order is intentionally designed with business logic checks before timeout: (1) check SUCCESS/FAILED status first, (2) check for null match (business failure), (3) check timeout only as last resort for PENDING transactions. If matched transaction is PENDING and not timed out, no branch matches and payment stays IN_PROGRESS for scheduler retry. This design prioritizes business outcome determination over time-based fallback.

Applied to files:

  • apps/commerce-api/src/main/java/com/loopers/application/payment/PaymentFacade.java
๐Ÿ“š Learning: 2025-11-30T15:44:28.336Z
Learnt from: ghojeong
Repo: Loopers-dev-lab/loopers-spring-kotlin-template PR: 48
File: apps/commerce-api/src/main/kotlin/com/loopers/application/order/OrderFacade.kt:80-83
Timestamp: 2025-11-30T15:44:28.336Z
Learning: User ghojeong prefers explicit state management over transaction rollback for handling payment failures in order creation flow. When payment fails after order creation, the order should be explicitly marked as cancelled and persisted, rather than relying on transaction rollback.

Applied to files:

  • apps/commerce-api/src/main/java/com/loopers/application/payment/PaymentFacade.java
๐Ÿงฌ Code graph analysis (5)
apps/commerce-api/src/main/java/com/loopers/interfaces/event/order/OrderEventListener.java (1)
apps/commerce-api/src/main/java/com/loopers/interfaces/event/product/ProductEventListener.java (1)
  • Component (10-25)
apps/commerce-api/src/main/java/com/loopers/application/payment/PaymentFacade.java (1)
apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEvent.java (1)
  • PaymentEvent (3-14)
apps/commerce-api/src/main/java/com/loopers/interfaces/event/product/ProductEventListener.java (1)
apps/commerce-api/src/main/java/com/loopers/interfaces/event/order/OrderEventListener.java (1)
  • Component (10-25)
apps/commerce-api/src/main/java/com/loopers/infrastructure/payment/PaymentCoreEventPublisher.java (3)
apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEvent.java (1)
  • PaymentEvent (3-14)
apps/commerce-api/src/main/java/com/loopers/interfaces/event/order/OrderEventListener.java (1)
  • Component (10-25)
apps/commerce-api/src/main/java/com/loopers/interfaces/event/product/ProductEventListener.java (1)
  • Component (10-25)
apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEventPublisher.java (1)
apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEvent.java (1)
  • PaymentEvent (3-14)
๐Ÿ”‡ Additional comments (6)
modules/kafka/src/main/resources/kafka.yml (1)

10-10: ์‹ ๋ขฐ์„ฑ ์žˆ๋Š” Kafka ์„ค์ •์ด ์ ์šฉ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.

acks: all๊ณผ idempotence ์„ค์ •(๋Œ€๊ด„ํ˜ธ ํ‘œ๊ธฐ๋ฒ• ์ˆ˜์ • ํ›„)์˜ ์กฐํ•ฉ์€ ๋ฉ”์‹œ์ง€ ์†์‹ค์„ ๋ฐฉ์ง€ํ•˜๊ณ  ์ค‘๋ณต ์ „์†ก์„ ๋ฐฉ์ง€ํ•˜๋Š” ์ข‹์€ ๊ตฌ์„ฑ์ž…๋‹ˆ๋‹ค. ์ž๋™ ํ† ํ”ฝ ์ƒ์„ฑ์ด ํ™œ์„ฑํ™”๋˜์–ด ์žˆ์œผ๋ฏ€๋กœ ํ”„๋กœ๋•์…˜ ํ™˜๊ฒฝ์—์„œ๋Š” ํ† ํ”ฝ์„ ์‚ฌ์ „์— ์ƒ์„ฑํ•˜๋Š” ๊ฒƒ์ด ๊ถŒ์žฅ๋ฉ๋‹ˆ๋‹ค.

Also applies to: 18-20

apps/commerce-api/build.gradle.kts (1)

5-5: Kafka ๋ชจ๋“ˆ ์˜์กด์„ฑ์ด ์˜ฌ๋ฐ”๋ฅด๊ฒŒ ์ถ”๊ฐ€๋˜์—ˆ์Šต๋‹ˆ๋‹ค.

commerce-api์—์„œ Kafka ๊ธฐ๋ฐ˜ ์ด๋ฒคํŠธ ๋ฐœํ–‰ ๊ธฐ๋Šฅ์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋„๋ก ์ ์ ˆํ•˜๊ฒŒ ์˜์กด์„ฑ์ด ์ถ”๊ฐ€๋˜์—ˆ์Šต๋‹ˆ๋‹ค.

apps/commerce-api/src/main/java/com/loopers/application/payment/PaymentFacade.java (2)

93-93: ์ด๋ฒคํŠธ ๋ฐœํ–‰ ์‹คํŒจ ์‹œ ํŠธ๋žœ์žญ์…˜ ์ฒ˜๋ฆฌ๋ฅผ ๊ฒ€ํ† ํ•˜์„ธ์š”.

์ด๋ฒคํŠธ ๋ฐœํ–‰์ด @Transactional ๋ฉ”์„œ๋“œ ๋‚ด์—์„œ ๋™๊ธฐ์ ์œผ๋กœ ์ˆ˜ํ–‰๋ฉ๋‹ˆ๋‹ค. Kafka๊ฐ€ ์‚ฌ์šฉ ๋ถˆ๊ฐ€๋Šฅํ•˜๊ฑฐ๋‚˜ ๋ฐœํ–‰์— ์‹คํŒจํ•˜๋ฉด ์ „์ฒด ๊ฒฐ์ œ ํŠธ๋žœ์žญ์…˜์ด ๋กค๋ฐฑ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

๋‹ค์Œ ์‚ฌํ•ญ๋“ค์„ ๊ณ ๋ คํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค:

  • ์ด๋ฒคํŠธ ๋ฐœํ–‰ ์‹คํŒจ๊ฐ€ ๊ฒฐ์ œ ํŠธ๋žœ์žญ์…˜์„ ๋กค๋ฐฑํ•ด์•ผ ํ•˜๋Š”์ง€ ํ™•์ธ
  • ์ด๋ฒคํŠธ ๋ฐœํ–‰์„ ๋น„๋™๊ธฐ๋กœ ์ฒ˜๋ฆฌํ•˜๊ฑฐ๋‚˜ ํŠธ๋žœ์žญ์…˜ ์ปค๋ฐ‹ ํ›„ ๋ฐœํ–‰ํ•˜๋Š” ๋ฐฉ์•ˆ ๊ฒ€ํ† 
  • KafkaTemplate.send()์˜ ์—๋Ÿฌ ์ฒ˜๋ฆฌ ์ถ”๊ฐ€

Based on learnings, ๊ฒฐ์ œ ์‹คํŒจ ์‹œ ๋ช…์‹œ์ ์ธ ์ƒํƒœ ๊ด€๋ฆฌ๋ฅผ ์„ ํ˜ธํ•˜๋ฏ€๋กœ, ์ด๋ฒคํŠธ ๋ฐœํ–‰ ์‹คํŒจ ์‹œ์—๋„ ๊ฒฐ์ œ ์ƒํƒœ๋Š” ์œ ์ง€๋˜์–ด์•ผ ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.


122-122: ๋™์ผํ•œ ์ด๋ฒคํŠธ ๋ฐœํ–‰ ํŒจํ„ด์ด ์ ์šฉ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.

๊ฒฐ์ œ ์‹คํŒจ ์‹œ์—๋„ ์ด๋ฒคํŠธ ๋ฐœํ–‰์ด ๋™๊ธฐ์ ์œผ๋กœ ์ˆ˜ํ–‰๋ฉ๋‹ˆ๋‹ค. Line 93์˜ ์„ฑ๊ณต ์ผ€์ด์Šค์™€ ๋™์ผํ•œ ํŠธ๋žœ์žญ์…˜ ๋ฐ ์—๋Ÿฌ ์ฒ˜๋ฆฌ ๊ณ ๋ ค์‚ฌํ•ญ์ด ์ ์šฉ๋ฉ๋‹ˆ๋‹ค.

apps/commerce-api/src/main/java/com/loopers/domain/payment/PaymentEvent.java (1)

3-14: ๋„๋ฉ”์ธ ์ด๋ฒคํŠธ ๋ชจ๋ธ์ด ์ž˜ ์„ค๊ณ„๋˜์—ˆ์Šต๋‹ˆ๋‹ค.

Java record๋ฅผ ํ™œ์šฉํ•˜์—ฌ ๋ถˆ๋ณ€ ์ด๋ฒคํŠธ ํƒ€์ž…์„ ์ •์˜ํ•˜๊ณ , ๊ฐ ์ด๋ฒคํŠธ์— ๋Œ€ํ•œ ํŒฉํ† ๋ฆฌ ๋ฉ”์„œ๋“œ๋ฅผ ์ œ๊ณตํ•˜๋Š” ๊น”๋”ํ•œ ๊ตฌํ˜„์ž…๋‹ˆ๋‹ค. Payment ์—”ํ‹ฐํ‹ฐ๋กœ๋ถ€ํ„ฐ ์ด๋ฒคํŠธ๋ฅผ ์ผ๊ด€๋˜๊ฒŒ ์ƒ์„ฑํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

apps/commerce-api/src/main/java/com/loopers/infrastructure/payment/PaymentCoreEventPublisher.java (1)

20-22: ์ด๋ฒคํŠธ ๋ฐœํ–‰ ์‹คํŒจ์— ๋Œ€ํ•œ ์—๋Ÿฌ ์ฒ˜๋ฆฌ๋ฅผ ์ถ”๊ฐ€ํ•˜์„ธ์š”.

kafkaTemplate.send()์˜ ๋ฐ˜ํ™˜๊ฐ’(CompletableFuture)์„ ๋ฌด์‹œํ•˜๊ณ  ์žˆ์–ด ๋ฐœํ–‰ ์‹คํŒจ๋ฅผ ๊ฐ์ง€ํ•  ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค. ์ด๋ฒคํŠธ ๋ฐœํ–‰ ์‹คํŒจ ์‹œ ๋กœ๊น…, ์žฌ์‹œ๋„, ๋˜๋Š” ๋Œ€์ฒด ์ฒ˜๋ฆฌ๊ฐ€ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.

๐Ÿ”Ž ์—๋Ÿฌ ์ฒ˜๋ฆฌ ์ถ”๊ฐ€ ์˜ˆ์‹œ
 @Override
 public void publish(final PaymentPaid paymentCreated) {
-    kafkaTemplate.send(paidTopic, paymentCreated.payment().getId(), paymentCreated);
+    kafkaTemplate.send(paidTopic, paymentCreated.payment().getId(), paymentCreated)
+        .whenComplete((result, ex) -> {
+            if (ex != null) {
+                log.error("Failed to publish PaymentPaid event for payment ID: {}", 
+                    paymentCreated.payment().getId(), ex);
+                // Consider: throw exception, retry, or save to dead letter queue
+            } else {
+                log.info("Successfully published PaymentPaid event for payment ID: {}", 
+                    paymentCreated.payment().getId());
+            }
+        });
 }

Also applies to: 25-27

โ›” Skipped due to learnings
Learnt from: kilian-develop
Repo: Loopers-dev-lab/loopers-spring-java-template PR: 190
File: apps/commerce-streamer/src/main/java/com/loopers/applications/streamer/consumer/product/IncreaseProductViewKafkaConsumer.java:25-35
Timestamp: 2025-12-18T13:24:54.339Z
Learning: In this codebase, Kafka consumers delegate error handling and event tracking to the service layer via EventInboxAspect. Service methods annotated with InboxEvent are intercepted by the aspect, which handles failures by saving failed EventInbox entries and logging errors. This centralized approach avoids duplicating error handling logic across multiple consumers.

Comment on lines +19 to +20
properties:
enable.idempotence: true
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โš ๏ธ Potential issue | ๐Ÿ”ด Critical

Kafka ํ”„๋กœ๋“€์„œ ์†์„ฑ์˜ ํ‘œ๊ธฐ๋ฒ•์„ ์ˆ˜์ •ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.

Spring Boot์˜ spring.kafka.producer.properties ๋งต ๋‚ด๋ถ€์—์„œ๋Š” ์ (dot)์„ ํฌํ•จํ•œ Kafka ํด๋ผ์ด์–ธํŠธ ์†์„ฑ ์ด๋ฆ„์„ ๋Œ€๊ด„ํ˜ธ ํ‘œ๊ธฐ๋ฒ•์œผ๋กœ ์ž‘์„ฑํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค. ํ˜„์žฌ enable.idempotence: true๋Š” YAML ํŒŒ์„œ๊ฐ€ ์ค‘์ฒฉ๋œ ํ‚ค๋กœ ํ•ด์„ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

Based on learnings, Kafka ํด๋ผ์ด์–ธํŠธ ์†์„ฑ์€ ์ •ํ™•ํ•œ ์ด๋ฆ„์œผ๋กœ ์ธ์‹๋˜๋„๋ก ๋Œ€๊ด„ํ˜ธ๋กœ ๊ฐ์‹ธ์•ผ ํ•ฉ๋‹ˆ๋‹ค.

๐Ÿ”Ž ์ˆ˜์ • ์ œ์•ˆ
     producer:
       key-serializer: org.apache.kafka.common.serialization.StringSerializer
       value-serializer: org.springframework.kafka.support.serializer.JsonSerializer
       retries: 3
       acks: all
       properties:
-        enable.idempotence: true
+        "[enable.idempotence]": true
๐Ÿ“ Committable suggestion

โ€ผ๏ธ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
properties:
enable.idempotence: true
producer:
key-serializer: org.apache.kafka.common.serialization.StringSerializer
value-serializer: org.springframework.kafka.support.serializer.JsonSerializer
retries: 3
acks: all
properties:
"[enable.idempotence]": true
๐Ÿค– Prompt for AI Agents
In modules/kafka/src/main/resources/kafka.yml around lines 19 to 20, the Kafka
producer property key is written as enable.idempotence which YAML may parse as a
nested key; update the key to use Spring Boot's bracket notation for Kafka
client properties (i.e., wrap the full dotted property name in brackets and
quotes as the map key) so the client receives the correct "enable.idempotence"
setting and not a nested YAML structure.

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