feat(gift): 신청번호 생성기를 추가한다

2026-09-30 13:35:47 +09:00
parent 8ae722c8df
commit 760005c266
2 changed files with 111 additions and 0 deletions
@@ -0,0 +1,43 @@
+package kr.co.vividnext.sodalive.v2.gift.application
+
+import kr.co.vividnext.sodalive.common.SodaException
+import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftApplicationNoSequence
+import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftApplicationNoSequenceRepository
+import org.springframework.dao.DataIntegrityViolationException
+import org.springframework.stereotype.Service
+import org.springframework.transaction.PlatformTransactionManager
+import org.springframework.transaction.support.TransactionTemplate
+import java.time.LocalDateTime
+import java.time.ZoneId
+import java.time.format.DateTimeFormatter
+
+@Service
+class GiftApplicationNoGenerator(
+    private val repository: GiftApplicationNoSequenceRepository,
+    transactionManager: PlatformTransactionManager
+) {
+    private val transactionTemplate = TransactionTemplate(transactionManager)
+
+    fun generate(now: LocalDateTime = LocalDateTime.now(SEOUL_ZONE)): String {
+        val sequenceDate = now.format(DATE_FORMATTER)
+        for (attempt in 1..MAX_RETRY_COUNT) {
+            try {
+                return transactionTemplate.execute {
+                    val sequence = repository.findBySequenceDateForUpdate(sequenceDate)
+                        ?: repository.saveAndFlush(GiftApplicationNoSequence(sequenceDate = sequenceDate, lastSequence = 0))
+                    sequence.lastSequence += 1
+                    "G$sequenceDate${sequence.lastSequence.toString().padStart(6, '0')}"
+                } ?: throw SodaException(messageKey = "common.error.invalid_request")
+            } catch (_: DataIntegrityViolationException) {
+                if (attempt == MAX_RETRY_COUNT) throw SodaException(messageKey = "gift.application_no.generate_failed")
+            }
+        }
+        throw SodaException(messageKey = "gift.application_no.generate_failed")
+    }
+
+    companion object {
+        private val SEOUL_ZONE = ZoneId.of("Asia/Seoul")
+        private val DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyyMMdd")
+        private const val MAX_RETRY_COUNT = 3
+    }
+}