src/main/kotlin/roomescape/auth/infrastructure/jwt/JwtHandler.kt

@@ -1,5 +1,7 @@
 package roomescape.auth.infrastructure.jwt
 
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
 import io.jsonwebtoken.ExpiredJwtException
 import io.jsonwebtoken.Jwts
 import io.jsonwebtoken.security.Keys
@@ -10,6 +12,8 @@ import roomescape.auth.exception.AuthException
 import java.util.*
 import javax.crypto.SecretKey
 
+private val log: KLogger = KotlinLogging.logger {}
+
 @Component
 class JwtHandler(
     @Value("\${security.jwt.token.secret-key}")
@@ -21,6 +25,7 @@ class JwtHandler(
     private val secretKey: SecretKey = Keys.hmacShaKeyFor(secretKeyString.toByteArray())
 
     fun createToken(memberId: Long): String {
+        log.debug { "[JwtHandler.createToken] 시작: memberId=$memberId" }
         val date = Date()
         val accessTokenExpiredAt = Date(date.time + (tokenTtlSeconds * 1_000))
 
@@ -30,10 +35,12 @@ class JwtHandler(
             .expiration(accessTokenExpiredAt)
             .signWith(secretKey)
             .compact()
+            .also { log.debug { "[JwtHandler.createToken] 완료. memberId=$memberId, token=$it" } }
     }
 
     fun getMemberIdFromToken(token: String?): Long {
         try {
+            log.debug { "[JwtHandler.getMemberIdFromToken] 시작: token=$token" }
             return Jwts.parser()
                 .verifyWith(secretKey)
                 .build()
@@ -41,6 +48,7 @@ class JwtHandler(
                 .payload
                 .get(MEMBER_ID_CLAIM_KEY, Number::class.java)
                 .toLong()
+                .also { log.debug { "[JwtHandler.getMemberIdFromToken] 완료. memberId=$it, token=$token" } }
         } catch (_: IllegalArgumentException) {
             throw AuthException(AuthErrorCode.TOKEN_NOT_FOUND)
         } catch (_: ExpiredJwtException) {