[TSK-58] image rendering fix

src/main/java/ongjong/namanmoo/controller/ChallengeController.java

@@ -303,7 +303,7 @@ public ApiResponse<Map<String, String>> saveFaceTimeAnswer(
             fileType = FileType.VIDEO;
 
             // S3에 파일 업로드 및 URL 저장
-            String uploadedUrl = awsS3Service.uploadFile(answerFile);
+            String uploadedUrl = awsS3Service.uploadOriginalFile(answerFile);
 
             // Answer 업데이트
             answerService.modifyAnswer(challengeId, uploadedUrl);

src/main/java/ongjong/namanmoo/service/AwsS3Service.java

@@ -5,6 +5,9 @@
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.format.DateTimeFormatter;
 import java.util.List;
 import java.util.Optional;
 import java.util.UUID;
@@ -89,6 +92,29 @@ public String uploadFile(MultipartFile multipartFile) throws IOException {
         return uploadFileUrl;
     }
 
+    /**
+     * MultipartFile을 S3에 업로드하고 업로드된 파일의 URL을 반환하는 메소드.
+     *
+     * @param multipartFile 업로드할 MultipartFile
+     * @return 업로드된 파일의 URL
+     * @throws IOException 파일 변환 또는 업로드 중 발생하는 예외
+     */
+    public String uploadOriginalFile(MultipartFile multipartFile) throws IOException {
+        log.info("Converting MultipartFile to File...");
+        File uploadFile = convertFile(multipartFile)
+                .orElseThrow(() -> new IllegalArgumentException("MultipartFile -> File convert fail"));
+
+        String fileType = determineFileType(multipartFile);
+        String fileName = generateFileName(uploadFile, fileType);
+
+        log.info("Uploading file to S3: {}", fileName);
+        String uploadFileUrl = uploadFileToS3(uploadFile, fileName);
+        log.info("File uploaded to S3: {}", uploadFileUrl);
+
+        removeNewFile(uploadFile);
+        return uploadFileUrl;
+    }
+
     /**
      * 이미지를 최적화하는 메소드.
      *
@@ -167,9 +193,8 @@ private String determineFileType(MultipartFile multipartFile) {
      * @throws IOException 파일 변환 중 발생하는 예외
      */
     private Optional<File> convertFile(MultipartFile file) throws IOException {
-//        String fileName = UUID.randomUUID() + "_" + file.getOriginalFilename();
-        String fileName = file.getOriginalFilename();
-        assert fileName != null;
+        String fileName = UUID.randomUUID() + "_" + file.getOriginalFilename();
+//        String fileName = file.getOriginalFilename();
         File convertFile = new File(fileName);
 
         if (convertFile.createNewFile()) {
@@ -190,7 +215,13 @@ private Optional<File> convertFile(MultipartFile file) throws IOException {
      * @return String 고유한 파일 이름
      */
     private String generateFileName(File uploadFile, String fileType) {
-        return fileType + "/" + UUID.randomUUID() + "_" + uploadFile.getName();
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS")
+                .withZone(ZoneId.systemDefault());
+        String formattedDate = formatter.format(Instant.now());
+
+//        return fileType + "/" + UUID.randomUUID() + "_" + formattedDate + "_" + uploadFile.getName();
+        return fileType + "/" + formattedDate + "_" + uploadFile.getName();
+
     }
 
     /**
@@ -261,6 +292,32 @@ public void delete(String fileName) {
         amazonS3Client.deleteObject(bucket, fileName);
     }
 
+    // 업로드 실패 시 재시도 로직 추가
+    public String uploadFileWithRetry(MultipartFile multipartFile, int retries) throws IOException, InterruptedException {
+        File uploadFile = convertFile(multipartFile)
+                .orElseThrow(() -> new IllegalArgumentException("Incorrect conversion from MultipartFile to File"));
+
+        String fileType = determineFileType(multipartFile);
+        String fileName = generateFileName(uploadFile, fileType);
+
+        for (int i = 0; i < retries; i++) {
+            try {
+                amazonS3Client.putObject(new PutObjectRequest(bucket, fileName, uploadFile)
+                        .withCannedAcl(CannedAccessControlList.PublicRead));
+
+                String uploadedUrl = getS3FileURL(fileName);
+                log.info("Successfully uploaded file to S3 on retry " + i + ": {}", uploadedUrl);
+
+                removeNewFile(uploadFile); // Remember to clean up local file after upload
+                return uploadedUrl;
+            } catch (Exception ex) {
+                log.warn("업로드에 실패하였습니다. 재시도하는중... (시도: {}/{})", i + 1, retries);
+                Thread.sleep(3000);  // waiting for 3 seconds before the next retry
+            }
+        }
+        throw new RuntimeException("Failed to upload file after " + retries + " retries.");
+    }
+
     // 오디오 파일 고정 경로 생성
     public String uploadAudioFile(MultipartFile multipartFile, String s3Path) throws IOException {
         log.info("Converting MultipartFile to File...");