service/src/main/kotlin/com/sangdol/roomescape/auth/web/support/resolver/UserContextResolver.kt

@@ -1,5 +1,6 @@
 package com.sangdol.roomescape.auth.web.support.resolver
 
+import com.sangdol.common.utils.MdcPrincipalIdUtil
 import com.sangdol.roomescape.auth.exception.AuthErrorCode
 import com.sangdol.roomescape.auth.exception.AuthException
 import com.sangdol.roomescape.auth.infrastructure.jwt.JwtUtils
@@ -38,7 +39,9 @@ class UserContextResolver(
         val token: String? = request.accessToken()
 
         try {
-            val id: Long = jwtUtils.extractSubject(token).toLong()
+            val id: Long = jwtUtils.extractSubject(token).also {
+                MdcPrincipalIdUtil.set(it)
+            }.toLong()
 
             return userService.findContextById(id)
         } catch (e: Exception) {