[FEAT] CreatedBy, UpdatedBy 기능 구현 (#31)

src/main/java/synk/meeteam/global/config/UserAuditorAware.java

@@ -0,0 +1,29 @@
+package synk.meeteam.global.config;
+
+import java.util.Optional;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.AuditorAware;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+import synk.meeteam.domain.user.user.entity.User;
+import synk.meeteam.security.CustomAuthUser;
+
+@RequiredArgsConstructor
+@Component
+public class UserAuditorAware implements AuditorAware<Long> {
+    @Override
+    public Optional<Long> getCurrentAuditor() {
+
+        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
+        User user = null;
+        if (!authentication.getPrincipal().equals("anonymousUser")) {
+            CustomAuthUser customAuthUser = (CustomAuthUser) authentication.getPrincipal();
+            user = customAuthUser.getUser();
+        }
+        if (user == null) {
+            return Optional.empty();
+        }
+        return Optional.ofNullable(user.getId());
+    }
+}