Feat: 이미지 모델 연결 & S3 저장 로직 생성

build.gradle

@@ -56,6 +56,8 @@ dependencies {
 
     // Spring Security 설정
     implementation 'org.springframework.boot:spring-boot-starter-security'
+
+    implementation 'org.springframework.cloud:spring-cloud-starter-aws:2.2.6.RELEASE'
 }
 
 tasks.register('importConfigSubmodule', Copy) {

src/main/java/slvtwn/khu/toyouserver/agent/aws/AwsConfiguration.java

@@ -0,0 +1,33 @@
+package slvtwn.khu.toyouserver.agent.aws;
+
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.services.s3.AmazonS3Client;
+import com.amazonaws.services.s3.AmazonS3ClientBuilder;
+import lombok.Getter;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Getter
+@Configuration
+public class AwsConfiguration {
+
+    @Value("${cloud.aws.credentials.access-key}")
+    private String accessKey;
+    @Value("${cloud.aws.credentials.secret-key}")
+    private String secretKey;
+    @Value("${cloud.aws.region.static}")
+    private String region;
+    @Value("${cloud.aws.s3.bucket}")
+    private String bucket;
+
+    @Bean
+    public AmazonS3Client amazonS3Client() {
+        BasicAWSCredentials awsCredentials = new BasicAWSCredentials(accessKey, secretKey);
+        return (AmazonS3Client) AmazonS3ClientBuilder.standard()
+                .withRegion(region)
+                .withCredentials(new AWSStaticCredentialsProvider(awsCredentials))
+                .build();
+    }
+}

src/main/java/slvtwn/khu/toyouserver/agent/aws/S3Agent.java

@@ -0,0 +1,37 @@
+package slvtwn.khu.toyouserver.agent.aws;
+
+import com.amazonaws.services.s3.AmazonS3Client;
+import com.amazonaws.services.s3.model.ObjectMetadata;
+import com.amazonaws.services.s3.model.PutObjectRequest;
+import java.io.ByteArrayInputStream;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import slvtwn.khu.toyouserver.common.response.ResponseType;
+import slvtwn.khu.toyouserver.exception.ToyouException;
+
+@RequiredArgsConstructor
+@Component
+public class S3Agent {
+
+    private final AmazonS3Client amazonS3Client;
+    private final AwsConfiguration configuration;
+
+    public String uploadFile(byte[] fileData, String fileName, String contentType) {
+        try {
+            ObjectMetadata metadata = new ObjectMetadata();
+            metadata.setContentType(contentType);
+            metadata.setContentLength(fileData.length);
+
+            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(fileData);
+            amazonS3Client.putObject(new PutObjectRequest(configuration.getBucket(), fileName, byteArrayInputStream, metadata));
+
+            return fileName;
+        } catch (Exception e) {
+            throw new ToyouException(ResponseType.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    public String getUrl(String key) {
+        return amazonS3Client.getResourceUrl(configuration.getBucket(), key);
+    }
+}

src/main/java/slvtwn/khu/toyouserver/agent/model/StickerModelAgent.java

@@ -0,0 +1,27 @@
+package slvtwn.khu.toyouserver.agent.model;
+
+import java.util.Base64;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import slvtwn.khu.toyouserver.agent.WebClientWrapper;
+
+@RequiredArgsConstructor
+@Component
+public class StickerModelAgent {
+
+    private final StickerModelConfiguration configuration;
+
+    private final WebClientWrapper webClientWrapper;
+
+    public List<byte[]> generateStickers(StickerModelRequest request) {
+        StickerModelResponse response = webClientWrapper.send(
+                configuration.getEndpoint(), (httpHeaders -> {
+                }), request, StickerModelResponse.class
+        );
+
+        return response.base64EncodedImages().stream()
+                .map(each -> Base64.getDecoder().decode(each))
+                .toList();
+    }
+}

src/main/java/slvtwn/khu/toyouserver/agent/model/StickerModelConfiguration.java

@@ -0,0 +1,13 @@
+package slvtwn.khu.toyouserver.agent.model;
+
+import lombok.Getter;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+@Getter
+@Component
+public class StickerModelConfiguration {
+
+    @Value("${sticker-model.endpoint}")
+    private String endpoint;
+}

src/main/java/slvtwn/khu/toyouserver/agent/model/StickerModelRequest.java

@@ -0,0 +1,5 @@
+package slvtwn.khu.toyouserver.agent.model;
+
+public record StickerModelRequest(String prompt, String color) {
+
+}

src/main/java/slvtwn/khu/toyouserver/agent/model/StickerModelResponse.java

@@ -0,0 +1,7 @@
+package slvtwn.khu.toyouserver.agent.model;
+
+import java.util.List;
+
+public record StickerModelResponse(List<String> base64EncodedImages) {
+
+}

src/main/java/slvtwn/khu/toyouserver/application/AgentService.java

@@ -2,24 +2,43 @@
 
 import java.util.Arrays;
 import java.util.List;
+import java.util.UUID;
 import lombok.AllArgsConstructor;
 import org.springframework.stereotype.Service;
+import slvtwn.khu.toyouserver.agent.aws.S3Agent;
 import slvtwn.khu.toyouserver.agent.gpt.ChatGptAgent;
 import slvtwn.khu.toyouserver.agent.gpt.ChatGptResponse;
+import slvtwn.khu.toyouserver.agent.model.StickerModelAgent;
+import slvtwn.khu.toyouserver.agent.model.StickerModelRequest;
+import slvtwn.khu.toyouserver.dto.GenerateStickerRequest;
+import slvtwn.khu.toyouserver.dto.GenerateStickerResponse;
 import slvtwn.khu.toyouserver.dto.KeywordRequest;
 import slvtwn.khu.toyouserver.dto.KeywordResponse;
 
 @AllArgsConstructor
 @Service
 public class AgentService {
 
+    private static final String STICKER_MIME_TYPE = "image/png";
+
+    private final StickerModelAgent stickerModelAgent;
     private final ChatGptAgent chatGptAgent;
+    private final S3Agent s3Agent;
+
+    public GenerateStickerResponse generateStickers(GenerateStickerRequest request) {
+        List<String> urls = stickerModelAgent.generateStickers(new StickerModelRequest(request.prompt(), request.color())).stream()
+                .map(each -> s3Agent.uploadFile(each, UUID.nameUUIDFromBytes(each).toString(), STICKER_MIME_TYPE))
+                .map(s3Agent::getUrl)
+                .toList();
+
+        return new GenerateStickerResponse(urls);
+    }
 
     public KeywordResponse generateKeywords(KeywordRequest request) {
         String content = request.content();
         String prompt = String.format("""
                 Suggest 3 keywords that could represent emotions or characteristics in the content.
-
+                                
                 <example>
                     <request>
                         content:
@@ -31,7 +50,7 @@ public KeywordResponse generateKeywords(KeywordRequest request) {
                         반가움, 기대, 아쉬움
                     </response>
                 </example>
-
+                                
                 <example>
                     <request>
                         content:
@@ -42,7 +61,7 @@ public KeywordResponse generateKeywords(KeywordRequest request) {
                         축하, 아쉬움, 즐거움
                     </response>
                 </example>
-
+                                
                 content: %s
                 keywords:                                 
                 """, content);

src/main/java/slvtwn/khu/toyouserver/application/RollingPaperService.java

@@ -5,7 +5,6 @@
 import org.springframework.data.domain.PageRequest;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import slvtwn.khu.toyouserver.agent.modellabs.ModelLabsAgent;
 import slvtwn.khu.toyouserver.common.response.ResponseType;
 import slvtwn.khu.toyouserver.domain.Member;
 import slvtwn.khu.toyouserver.domain.RollingPaper;
@@ -31,17 +30,18 @@ public class RollingPaperService {
 	private final RollingPaperRepository rollingPaperRepository;
 	private final StickerRepository stickerRepository;
 	private final MemberRepository memberRepository;
-	private final ModelLabsAgent modelLabsAgent;
 	private final RollingPaperRepository rollingpaperRepository;
 	private final UserRepository userRepository;
 
+	// TODO: ModelLabs 관련 문제로 DISABLED
+	@Deprecated
 	public void generateCoverImageAndUpdateRollingPaper(CoverRequest request, Long rollingPaperId) {
-		List<String> keywords = request.keywords();
-		String coverImageUrl = modelLabsAgent.generateCoverWithKeywords(keywords)
-				.get(FIRST_COVER_IMAGE);
-		RollingPaper rollingPaper = rollingpaperRepository.findById(rollingPaperId)
-				.orElseThrow(() -> new ToyouException(ResponseType.BAD_REQUEST));
-		rollingPaper.updateCoverImage(coverImageUrl);
+//		List<String> keywords = request.keywords();
+//		String coverImageUrl = modelLabsAgent.generateCoverWithKeywords(keywords)
+//				.get(FIRST_COVER_IMAGE);
+//		RollingPaper rollingPaper = rollingpaperRepository.findById(rollingPaperId)
+//				.orElseThrow(() -> new ToyouException(ResponseType.BAD_REQUEST));
+//		rollingPaper.updateCoverImage(coverImageUrl);
 	}
 
 	public void sendRollingPaper(Long recipientUserId, RollingPaperRequest request) {

src/main/java/slvtwn/khu/toyouserver/dto/GenerateStickerRequest.java

@@ -0,0 +1,5 @@
+package slvtwn.khu.toyouserver.dto;
+
+public record GenerateStickerRequest(String prompt, String color) {
+
+}

src/main/java/slvtwn/khu/toyouserver/dto/GenerateStickerResponse.java

@@ -0,0 +1,7 @@
+package slvtwn.khu.toyouserver.dto;
+
+import java.util.List;
+
+public record GenerateStickerResponse(List<String> stickers) {
+
+}