[#60] s3에 파일(이미지) 업로드하는 api 구현

build.gradle

@@ -44,7 +44,9 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-validation'
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-oauth2-client' // OAuth2-Client dependency
-    implementation 'org.springframework.boot:spring-boot-starter-actuator'
+    implementation 'org.springframework.boot:spring-boot-starter-actuator' // Actuator dependency
+    implementation 'org.springframework.cloud:spring-cloud-starter-aws:2.2.6.RELEASE' // AWS S3 dependency
+
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'org.springframework.security:spring-security-test'
     annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'

src/main/java/com/prgrms/prolog/global/image/api/ImageController.java

@@ -0,0 +1,42 @@
+package com.prgrms.prolog.global.image.api;
+
+import java.io.File;
+import java.util.UUID;
+
+import org.springframework.context.annotation.Profile;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import com.prgrms.prolog.global.image.dto.UploadFileResponse;
+import com.prgrms.prolog.global.image.util.FileManager;
+import com.prgrms.prolog.global.image.util.UploadFileToS3;
+
+import lombok.RequiredArgsConstructor;
+
+@Profile("!test")
+@RestController
+@RequiredArgsConstructor
+public class ImageController {
+
+	private static final String FILE_PATH = "posts";
+	private final FileManager fileManager;
+	private final UploadFileToS3 uploadFileToS3;
+
+	@PostMapping("/file")
+	public UploadFileResponse uploadFile(
+		@RequestPart(value = "file") MultipartFile multipartFile
+	) {
+		String id = UUID.randomUUID().toString();
+		String originalFilename = multipartFile.getOriginalFilename();
+		String fileName = (originalFilename + id).replace(" ", "");
+
+		File tempTargetFile = fileManager.convertMultipartFileToFile(multipartFile)
+			.orElseThrow(() -> new IllegalArgumentException("exception.file.convert"));
+		String fileUrl = uploadFileToS3.upload(tempTargetFile, FILE_PATH, fileName);
+
+		fileManager.removeFile(tempTargetFile);
+		return UploadFileResponse.toUploadFileResponse(originalFilename, fileUrl);
+	}
+}

src/main/java/com/prgrms/prolog/global/image/dto/UploadFileResponse.java

@@ -0,0 +1,10 @@
+package com.prgrms.prolog.global.image.dto;
+
+public record UploadFileResponse(
+        String originalFileName,
+        String uploadFilePath) {
+
+    public static UploadFileResponse toUploadFileResponse(String originalFileName, String uploadFilePath) {
+        return new UploadFileResponse(originalFileName, uploadFilePath);
+    }
+}

src/main/java/com/prgrms/prolog/global/image/util/FileManager.java

@@ -0,0 +1,43 @@
+package com.prgrms.prolog.global.image.util;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.Optional;
+
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+import org.springframework.web.multipart.MultipartFile;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Profile("!test")
+@Slf4j
+@Component
+public class FileManager {
+
+	public Optional<File> convertMultipartFileToFile(MultipartFile multipartFile) {
+		File newFile = new File(multipartFile.getOriginalFilename());
+		try {
+			if (newFile.createNewFile()) {
+				log.debug(newFile.getName() + " : 임시 파일을 생성했습니다");
+				try (FileOutputStream fos = new FileOutputStream(newFile)) {
+					fos.write(multipartFile.getBytes());
+				}
+				return Optional.of(newFile);
+			}
+		} catch (IOException e) {
+			throw new RuntimeException("exception.file.io");
+		}
+		return Optional.empty();
+	}
+
+	public void removeFile(File targetFile) {
+		String fileName = targetFile.getName();
+		if (targetFile.delete()) {
+			log.debug(fileName + " : 임시 파일를 삭제했습니다");
+		} else {
+			log.debug(fileName + " : 임시 파일를 삭제하지 못했습니다.");
+		}
+	}
+}

src/main/java/com/prgrms/prolog/global/image/util/UploadFileToS3.java

@@ -0,0 +1,29 @@
+package com.prgrms.prolog.global.image.util;
+
+import java.io.File;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+
+import com.amazonaws.services.s3.AmazonS3Client;
+import com.amazonaws.services.s3.model.PutObjectRequest;
+
+import lombok.RequiredArgsConstructor;
+
+@Profile("!test")
+@Component
+@RequiredArgsConstructor
+public class UploadFileToS3 {
+
+	private final AmazonS3Client amazonS3Client;
+
+	@Value("${cloud.aws.s3.bucket}")
+	private String bucket;
+
+	public String upload(File uploadFile, String dirName, String fileName) {
+		String savedFileName = dirName + "/" + fileName;
+		amazonS3Client.putObject(new PutObjectRequest(bucket, savedFileName, uploadFile));
+		return amazonS3Client.getUrl(bucket, savedFileName).toString();
+	}
+}

src/main/resources/application-aws.yml

@@ -0,0 +1,12 @@
+cloud:
+  aws:
+    s3:
+      bucket: prolog-storage
+    credentials:
+      access-key: ${AWS_ACCESS_KEY}
+      secret-key: ${AWS_SECRET_KEY}
+    region:
+      static: ap-northeast-2
+      auto: false
+    stack:
+      auto: false

src/main/resources/application.yml

@@ -12,9 +12,10 @@ spring:
       - db
       - exception
       - security
+      - aws
 
 management:
   endpoints:
     web:
       exposure:
-        include: '*'
+        include: '*'

src/main/resources/messages/exceptions/exception.properties

@@ -35,4 +35,8 @@ exception.jwtAuthentication.user.email.notExists=유저 이메일이 존재하
 exception.jwtAuthenticationToken.isAuthenticated=인증 정보를 확인할 수 없는 메서드 주입은 지원하지 않습니다. 생성자를 통해 생성해야 합니다.
 ## LIKE ##
 exception.like.notExist=좋아요를 누르지않아 취소할 수 없습니다.
-exception.like.alreadyExist=이미 좋아요를 누른 게시물에는 좋아요를 할 수 없습니다.
+exception.like.alreadyExist=이미 좋아요를 누른 게시물에는 좋아요를 할 수 없습니다.
+## FILE ##
+exception.file.convert=\uD30C\uC77C\uC744 \uBCC0\uD658\uD560 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
+exception.file.io=\uD30C\uC77C \uC0DD\uC131\uAD00\uB828 \uC624\uB958
+

src/test/resources/application.yml

@@ -1,28 +1,17 @@
 spring:
+  config:
+    import: optional:file:.env[.properties]
+  profiles:
+    include:
+      - security
+      - aws
+
   flyway:
     enabled: false
+
   datasource:
     driver-class-name: org.testcontainers.jdbc.ContainerDatabaseDriver
     url: jdbc:tc:mysql:8.0.31:///test?TC_INITSCRIPT=schema.sql
-  security:
-    oauth2:
-      client:
-        registration:
-          kakao:
-            client-name: kakao
-            client-id: ${CLIENT_ID}
-            client-secret: ${CLIENT_SECRET}
-            scope: profile_nickname, account_email
-            redirect-uri: ${REDIRECT_URI}
-            authorization-grant-type: authorization_code
-            client-authentication-method: POST
-        provider:
-          kakao:
-            authorization-uri: https://kauth.kakao.com/oauth/authorize
-            token-uri: https://kauth.kakao.com/oauth/token
-            user-info-uri: https://kapi.kakao.com/v2/user/me
-            user-name-attribute: id
+
 jwt:
-  issuer: prgrms
-  secret-key: prgrmsbackenddevrteamprologkwonj
-  expiry-seconds: 3
+  expiry-seconds: 2