Feat: Presigned로 이미지 처리 추가 - S11P21S002-249

backend/src/main/java/com/worlabel/domain/image/controller/ImageController.java

@@ -61,8 +61,7 @@ public class ImageController {
             @PathVariable("project_id") final Integer projectId,
             @PathVariable("folder_id") final Integer folderId) {
         log.debug("requestImageList {}", imageMetaList);
-        // TODO: 변경
+        return imageService.uploadFolderByPresignedImage(memberId, imageMetaList, projectId, folderId);
-        return imageMetaList.stream().map(o -> ImagePresignedUrlResponse.of(o.getId(), o.getFileName())).toList();
     }
 
     @GetMapping("/folders/{folder_id}/images/{image_id}")

backend/src/main/java/com/worlabel/domain/image/service/ImageService.java

@@ -38,6 +38,7 @@ import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
+import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 import java.util.stream.Stream;
 
@@ -318,7 +319,38 @@ public class ImageService {
         }
     }
 
+    @Transactional
+    @CheckPrivilege(PrivilegeType.EDITOR)
+    public List<ImagePresignedUrlResponse> uploadFolderByPresignedImage(final Integer memberId,
+                                                                        final List<ImageMetaRequest> imageMetaList,
+                                                                        final Integer projectId,
+                                                                        final Integer folderId) {
+        Folder folder = getOrCreateFolder(folderId, projectId);
+        List<ImagePresignedUrlResponse> presignedUrls = new ArrayList<>();
+
+        for (ImageMetaRequest meta : imageMetaList) {
+            // UUID 생성 및 이미지 Key 지정
+            String uuid = UUID.randomUUID().toString();
+            String fileName = meta.getFileName();
+            String extension = getExtension(fileName);
+            String s3Key = uuid + "." + extension;
+
+            // Presigned URL 생성
+            String presignedUrl = s3UploadService.generatePresignedUrl(s3Key);
+
+            // DB에 이미지 메타데이터 저장
+            Image image = Image.of(fileName, s3Key, extension, folder);
+            imageRepository.save(image);
+
+            // Presigned URL과 함께 응답 데이터 생성
+            ImagePresignedUrlResponse response = ImagePresignedUrlResponse.of(meta.getId(), presignedUrl);
+            presignedUrls.add(response);
+        }
+
+        return presignedUrls;
+    }
     // 이미지 가져오면서 프로젝트 소속 여부를 확인
+
     private Image getImageByIdAndFolderIdAndFolderProjectId(final Integer folderId, final Long imageId, final Integer projectId) {
         return imageRepository.findByIdAndFolderIdAndFolderProjectId(imageId, folderId, projectId)
                 .orElseThrow(() -> new CustomException(ErrorCode.DATA_NOT_FOUND));

backend/src/main/java/com/worlabel/global/service/S3UploadService.java

@@ -1,5 +1,6 @@
 package com.worlabel.global.service;
 
+import com.amazonaws.HttpMethod;
 import com.amazonaws.services.s3.AmazonS3;
 import com.amazonaws.services.s3.model.*;
 import com.amazonaws.util.IOUtils;
@@ -19,6 +20,7 @@ import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLDecoder;
 import java.nio.charset.StandardCharsets;
+import java.util.Date;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 
@@ -68,7 +70,7 @@ public class S3UploadService {
         try (InputStream inputStream = file.getInputStream()) {
             return uploadImageToS3(inputStream, extension, projectId);
         } catch (IOException e) {
-            log.debug("MultipartFile 업로드 에러 발생 {}",file.getOriginalFilename(), e);
+            log.debug("MultipartFile 업로드 에러 발생 {}", file.getOriginalFilename(), e);
             throw new CustomException(ErrorCode.FAIL_TO_CREATE_FILE);
         }
     }
@@ -152,4 +154,21 @@ public class S3UploadService {
             throw new CustomException(ErrorCode.INVALID_FILE_PATH);
         }
     }
+
+    /**
+     * Presigned URL 생성
+     */
+    public String generatePresignedUrl(String s3Key) {
+        Date expiration = new Date();
+        long expTimeMillis = expiration.getTime();
+        expTimeMillis += 1000 * 60 * 10; // 10분간 유효
+        expiration.setTime(expTimeMillis);
+
+        GeneratePresignedUrlRequest generatePresignedUrlRequest = new GeneratePresignedUrlRequest(bucket, s3Key)
+                .withMethod(HttpMethod.PUT)  // PUT 방식
+                .withExpiration(expiration);
+
+        URL url = amazonS3.generatePresignedUrl(generatePresignedUrlRequest);
+        return url.toString();
+    }
 }