Chore/243 로깅 시스템 추가

build.gradle.kts

@@ -40,6 +40,7 @@ repositories {
 }
 
 dependencies {
+    implementation("org.springframework.boot:spring-boot-starter-aop")
     implementation("org.springframework.boot:spring-boot-starter-web")
     implementation("org.springframework.boot:spring-boot-starter-webflux")
     implementation("org.springframework.boot:spring-boot-starter-data-jdbc")

src/main/kotlin/com/wafflestudio/spring2025/common/aop/LoggingAspect.kt

@@ -0,0 +1,25 @@
+package com.wafflestudio.spring2025.common.aop
+
+import com.wafflestudio.spring2025.common.exception.DomainException
+import org.aspectj.lang.annotation.AfterThrowing
+import org.aspectj.lang.annotation.Aspect
+import org.slf4j.LoggerFactory
+import org.springframework.stereotype.Component
+
+@Aspect
+@Component
+class LoggingAspect {
+    private val log = LoggerFactory.getLogger(javaClass)
+
+    @AfterThrowing(
+        pointcut = "within(com.wafflestudio.spring2025.domain..service..*)",
+        throwing = "ex",
+    )
+    fun logException(ex: Throwable) {
+        if (ex is DomainException && ex.httpErrorCode.is4xxClientError) {
+            log.warn("Expected domain exception: {}", ex.toString())
+        } else {
+            log.error("Unhandled exception in service", ex)
+        }
+    }
+}

src/main/kotlin/com/wafflestudio/spring2025/common/filter/RequestIdFilter.kt

@@ -0,0 +1,30 @@
+package com.wafflestudio.spring2025.common.filter
+
+import jakarta.servlet.FilterChain
+import jakarta.servlet.http.HttpServletRequest
+import jakarta.servlet.http.HttpServletResponse
+import org.slf4j.MDC
+import org.springframework.core.Ordered
+import org.springframework.core.annotation.Order
+import org.springframework.stereotype.Component
+import org.springframework.web.filter.OncePerRequestFilter
+import java.util.UUID
+
+@Component
+@Order(Ordered.HIGHEST_PRECEDENCE)
+class RequestIdFilter : OncePerRequestFilter() {
+    override fun doFilterInternal(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        filterChain: FilterChain,
+    ) {
+        val requestId = UUID.randomUUID().toString()
+        MDC.put("requestId", requestId)
+        response.setHeader("X-Request-Id", requestId)
+        try {
+            filterChain.doFilter(request, response)
+        } finally {
+            MDC.remove("requestId")
+        }
+    }
+}

src/main/kotlin/com/wafflestudio/spring2025/domain/auth/AuthenticationInterceptor.kt

@@ -17,11 +17,7 @@ class AuthenticationInterceptor : HandlerInterceptor {
         response: HttpServletResponse,
         handler: Any,
     ): Boolean {
-        logger.info("AuthenticationInterceptor pre-handle")
-
         val handlerMethod = handler as? HandlerMethod ?: return true
-        logger.info(handlerMethod.toString())
-
         val authRequired =
             handlerMethod.hasMethodAnnotation(AuthRequired::class.java) ||
                 handlerMethod.beanType.isAnnotationPresent(AuthRequired::class.java)

src/main/resources/application.yaml

@@ -132,3 +132,14 @@ oci:
   vault:
     secret-ids: ocid1.vaultsecret.oc1.ap-chuncheon-1.amaaaaaat2m5lbqameflpkt7abivvrauqwheybzrkqipf7msv3ol6ikhd3aq
     region: ap-chuncheon-1
+logging:
+  level:
+    org:
+      springframework:
+        data:
+          jdbc: INFO
+        jdbc:
+          core:
+            JdbcTemplate: INFO
+            namedparam:
+              NamedParameterJdbcTemplate: INFO

src/main/resources/logback-spring.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <property name="PATTERN"
+              value="%d{yyyy-MM-dd HH:mm:ss.SSS} [%X{requestId:-}] %-5level %logger{36} - %msg%n"/>
+
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>${PATTERN}</pattern>
+        </encoder>
+    </appender>
+
+    <!-- prod 외 (local, dev): 큐가 가득 차도 로그 버리지 않음 -->
+    <springProfile name="!prod">
+        <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
+            <discardingThreshold>0</discardingThreshold>
+            <appender-ref ref="CONSOLE"/>
+        </appender>
+        <logger name="com.wafflestudio.spring2025" level="DEBUG"/>
+        <root level="INFO"><appender-ref ref="ASYNC"/></root>
+    </springProfile>
+
+    <!-- prod: 큐 80% 이상 시 DEBUG/INFO 버림 (기본값), 앱 코드 INFO -->
+    <springProfile name="prod">
+        <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
+            <appender-ref ref="CONSOLE"/>
+        </appender>
+        <logger name="com.wafflestudio.spring2025" level="INFO"/>
+        <root level="WARN"><appender-ref ref="ASYNC"/></root>
+    </springProfile>
+</configuration>