refactor : S3 Service 레이어가 S3 라이브러리를 의존하고 있어서 이를 분리 (#168)

backend/src/main/java/kr/codesquad/issuetracker/application/S3Service.java

@@ -1,52 +1,27 @@
 package kr.codesquad.issuetracker.application;
 
-import java.net.URLDecoder;
-import java.nio.charset.StandardCharsets;
-
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
 
-import com.amazonaws.services.s3.AmazonS3Client;
-import com.amazonaws.services.s3.model.CannedAccessControlList;
-import com.amazonaws.services.s3.model.ObjectMetadata;
-import com.amazonaws.services.s3.model.PutObjectRequest;
-
+import kr.codesquad.issuetracker.application.s3.S3Uploader;
 import kr.codesquad.issuetracker.domain.ImageFile;
-import kr.codesquad.issuetracker.infrastructure.config.AwsProperties;
+import lombok.RequiredArgsConstructor;
 
+@RequiredArgsConstructor
 @Service
 public class S3Service {
 
-    private static final String UPLOADED_IMAGES_DIR = "public/uploaded-images/";
-    private static final String PROFILE_IMAGES_DIR = "public/profile-images/";
-
-    private final AmazonS3Client amazonS3Client;
-    private final String bucket;
-
-    public S3Service(AmazonS3Client amazonS3Client, AwsProperties awsProperties) {
-        this.amazonS3Client = amazonS3Client;
-        this.bucket = awsProperties.getS3().getBucket();
-    }
-
-    public String uploadImage(MultipartFile file) {
-        ImageFile imageFile = ImageFile.from(file);
-
-        // 버킷에 저장할 파일 이름 생성
-        String fileName = UPLOADED_IMAGES_DIR + imageFile.getRandomName();
+	private static final String UPLOADED_IMAGES_DIR = "public/uploaded-images/";
 
-        uploadImageToS3(imageFile, fileName);
-        return getObjectUri(fileName);
-    }
+	private final S3Uploader s3Uploader;
 
-    private void uploadImageToS3(ImageFile imageFile, String fileName) {
-        ObjectMetadata metadata = new ObjectMetadata();
-        metadata.setContentType(imageFile.getContentType());
-        metadata.setContentLength(imageFile.getFileSize());
-        amazonS3Client.putObject(new PutObjectRequest(bucket, fileName, imageFile.getImageInputStream(), metadata)
-                .withCannedAcl(CannedAccessControlList.PublicRead));
-    }
+	@Transactional
+	public String uploadImage(MultipartFile file) {
+		ImageFile imageFile = ImageFile.from(file);
 
-    private String getObjectUri(String fileName) {
-        return URLDecoder.decode(amazonS3Client.getUrl(bucket, fileName).toString(), StandardCharsets.UTF_8);
-    }
+		// 버킷에 저장할 파일 이름 생성
+		String fileName = UPLOADED_IMAGES_DIR + imageFile.getRandomName();
+		return s3Uploader.uploadImageToS3(imageFile, fileName);
+	}
 }

backend/src/main/java/kr/codesquad/issuetracker/application/s3/S3Uploader.java

@@ -0,0 +1,39 @@
+package kr.codesquad.issuetracker.application.s3;
+
+import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
+
+import org.springframework.stereotype.Component;
+
+import com.amazonaws.services.s3.AmazonS3Client;
+import com.amazonaws.services.s3.model.CannedAccessControlList;
+import com.amazonaws.services.s3.model.ObjectMetadata;
+import com.amazonaws.services.s3.model.PutObjectRequest;
+
+import kr.codesquad.issuetracker.domain.ImageFile;
+import kr.codesquad.issuetracker.infrastructure.config.AwsProperties;
+
+@Component
+public class S3Uploader {
+
+	private final AmazonS3Client amazonS3Client;
+	private final String bucket;
+
+	public S3Uploader(AmazonS3Client amazonS3Client, AwsProperties awsProperties) {
+		this.amazonS3Client = amazonS3Client;
+		this.bucket = awsProperties.getS3().getBucket();
+	}
+
+	public String uploadImageToS3(ImageFile imageFile, String fileName) {
+		ObjectMetadata metadata = new ObjectMetadata();
+		metadata.setContentType(imageFile.getContentType());
+		metadata.setContentLength(imageFile.getFileSize());
+		amazonS3Client.putObject(new PutObjectRequest(bucket, fileName, imageFile.getImageInputStream(), metadata)
+			.withCannedAcl(CannedAccessControlList.PublicRead));
+		return getObjectUri(fileName);
+	}
+
+	private String getObjectUri(String fileName) {
+		return URLDecoder.decode(amazonS3Client.getUrl(bucket, fileName).toString(), StandardCharsets.UTF_8);
+	}
+}