Feat : 수화인식 API

HalfFifty_BE/build.gradle

@@ -37,6 +37,8 @@ dependencies {
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testImplementation 'org.springframework.security:spring-security-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+	implementation 'software.amazon.awssdk:lambda:2.20.26'  // AWS Lambda SDK
+
 }
 
 tasks.named('test') {

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/bean/FlaskSignLanguageBean.java

@@ -0,0 +1,50 @@
+package HalfFifty.HalfFifty_BE.translation.bean;
+
+import HalfFifty.HalfFifty_BE.translation.domain.DTO.RequestSignLanguageDTO;
+import org.springframework.http.*;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Component
+public class FlaskSignLanguageBean {
+    private final RestTemplate restTemplate;
+    private final String aiServerUrl = "http://3.39.24.155/predict";  // Flask 서버 URL
+
+    public FlaskSignLanguageBean() {
+        this.restTemplate = new RestTemplate();
+    }
+
+    // Flask AI 서버로 요청 보내기
+    public Map<String, Object> exec(RequestSignLanguageDTO requestSignLanguageDTO) {
+        Map<String, Object> requestBody = new HashMap<>();
+        requestBody.put("keypoints", requestSignLanguageDTO.getKeypoints());
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+
+        HttpEntity<Map<String, Object>> request = new HttpEntity<>(requestBody, headers);
+
+        try {
+            ResponseEntity<Map> response = restTemplate.postForEntity(aiServerUrl, request, Map.class);
+
+            if (response.getStatusCode() == HttpStatus.OK) {
+                return response.getBody();
+            } else {
+                Map<String, Object> errorResponse = new HashMap<>();
+                errorResponse.put("success", false);
+                errorResponse.put("error", "AI 서버에서 오류 응답 발생");
+                return errorResponse;
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+            Map<String, Object> errorResponse = new HashMap<>();
+            errorResponse.put("success", false);
+            errorResponse.put("error", e.getMessage());
+            return errorResponse;
+        }
+    }
+}
+

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/bean/SaveTranslationBean.java

@@ -0,0 +1,38 @@
+package HalfFifty.HalfFifty_BE.translation.bean;
+
+import HalfFifty.HalfFifty_BE.translation.bean.small.CreateTranslationDAOBean;
+import HalfFifty.HalfFifty_BE.translation.bean.small.CreateTranslationDTOBean;
+import HalfFifty.HalfFifty_BE.translation.bean.small.SaveTranslationDAOBean;
+import HalfFifty.HalfFifty_BE.translation.domain.DTO.ResponseTranslationGetDTO;
+import HalfFifty.HalfFifty_BE.translation.domain.TranslationDAO;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.UUID;
+
+@Component
+public class SaveTranslationBean {
+    CreateTranslationDAOBean createTranslationDAOBean;
+    CreateTranslationDTOBean createTranslationDTOBean;
+    SaveTranslationDAOBean saveTranslationDAOBean;
+
+    @Autowired
+    public SaveTranslationBean(CreateTranslationDAOBean createTranslationDAOBean, CreateTranslationDTOBean createTranslationDTOBean, SaveTranslationDAOBean saveTranslationDAOBean) {
+        this.createTranslationDAOBean = createTranslationDAOBean;
+        this.createTranslationDTOBean = createTranslationDTOBean;
+        this.saveTranslationDAOBean = saveTranslationDAOBean;
+    }
+
+    // 번역 기록 저장
+    public ResponseTranslationGetDTO exec(UUID userId, String translationWord, Double probability) {
+        // 번역 객체 생성
+        TranslationDAO translationDAO = createTranslationDAOBean.exec(userId, translationWord);
+        if(translationDAO == null) return null;
+
+        // 번역 저장
+        saveTranslationDAOBean.exec(translationDAO);
+
+        // 수화 번역 객체를 DTO로 변환해서 반환
+        return createTranslationDTOBean.exec(translationDAO, probability);
+    }
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/bean/small/CreateTranslationDAOBean.java

@@ -0,0 +1,20 @@
+package HalfFifty.HalfFifty_BE.translation.bean.small;
+
+import HalfFifty.HalfFifty_BE.translation.domain.TranslationDAO;
+import org.springframework.stereotype.Component;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Component
+public class CreateTranslationDAOBean {
+
+    // 번역 기록 객체 생성
+    public TranslationDAO exec(UUID userId, String translationWord) {
+        return TranslationDAO.builder()
+                .userId(userId)
+                .translationWord(translationWord)
+                .createdAt(LocalDateTime.now())
+                .build();
+    }
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/bean/small/CreateTranslationDTOBean.java

@@ -0,0 +1,20 @@
+package HalfFifty.HalfFifty_BE.translation.bean.small;
+
+import HalfFifty.HalfFifty_BE.translation.domain.DTO.ResponseTranslationGetDTO;
+import HalfFifty.HalfFifty_BE.translation.domain.TranslationDAO;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CreateTranslationDTOBean {
+
+    // 수화 번역 객체를 DTO로 변환해서 반환
+    public ResponseTranslationGetDTO exec(TranslationDAO translationDAO, Double probability) {
+        return ResponseTranslationGetDTO.builder()
+                .translationId(translationDAO.getTranslationId())
+                .userId(translationDAO.getUserId())
+                .translationWord(translationDAO.getTranslationWord())
+                .createdAt(translationDAO.getCreatedAt())
+                .probability(probability)
+                .build();
+    }
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/bean/small/SaveTranslationDAOBean.java

@@ -0,0 +1,21 @@
+package HalfFifty.HalfFifty_BE.translation.bean.small;
+
+import HalfFifty.HalfFifty_BE.translation.domain.TranslationDAO;
+import HalfFifty.HalfFifty_BE.translation.repository.TranslationRepositoryJPA;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class SaveTranslationDAOBean {
+    TranslationRepositoryJPA translationRepositoryJPA;
+
+    @Autowired
+    public SaveTranslationDAOBean(TranslationRepositoryJPA translationRepositoryJPA) {
+        this.translationRepositoryJPA = translationRepositoryJPA;
+    }
+
+    // 번역 기록 저장
+    public void exec(TranslationDAO translationDAO) {
+        translationRepositoryJPA.save(translationDAO);
+    }
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/controller/TranslationController.java

@@ -0,0 +1,42 @@
+package HalfFifty.HalfFifty_BE.translation.controller;
+
+import HalfFifty.HalfFifty_BE.translation.domain.DTO.RequestSignLanguageDTO;
+import HalfFifty.HalfFifty_BE.translation.domain.DTO.ResponseTranslationGetDTO;
+import HalfFifty.HalfFifty_BE.translation.service.TranslationService;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/translation")
+@CrossOrigin("*")
+public class TranslationController {
+    TranslationService translationService;
+
+    public TranslationController(TranslationService translationService) {
+        this.translationService = translationService;
+    }
+
+    // 수화 번역 API
+    @PostMapping
+    public ResponseEntity<Map<String, Object>> translateSignLanguage(@RequestBody RequestSignLanguageDTO requestSignLanguageDTO) {
+        // 번역된 데이터 가져오기
+        ResponseTranslationGetDTO responseTranslationGetDTO = translationService.signLanguageTranslation(requestSignLanguageDTO);
+
+        // 번역 성공 여부 확인
+        boolean success = responseTranslationGetDTO != null;
+
+        // 응답 데이터 구성
+        Map<String, Object> responseMap = new HashMap<>();
+        responseMap.put("success", success);
+        responseMap.put("message", success ? "수화 번역 성공" : "수화 번역 실패");
+        responseMap.put("translationId", success ? responseTranslationGetDTO.getTranslationId() : null);
+        responseMap.put("translatedWord", success ? responseTranslationGetDTO.getTranslationWord() : null);
+        responseMap.put("probability", success ? responseTranslationGetDTO.getProbability() : null);
+
+        return ResponseEntity.status(HttpStatus.OK).body(responseMap);
+    }
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/domain/DTO/RequestSignLanguageDTO.java

@@ -0,0 +1,12 @@
+package HalfFifty.HalfFifty_BE.translation.domain.DTO;
+
+import lombok.Data;
+
+import java.util.List;
+import java.util.UUID;
+
+@Data
+public class RequestSignLanguageDTO {
+    private List<List<Double>> keypoints;  // 10 x 55 형태의 키포인트 데이터
+    private UUID userId;  // 사용자 식별 ID
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/domain/DTO/ResponseTranslationGetDTO.java

@@ -0,0 +1,17 @@
+package HalfFifty.HalfFifty_BE.translation.domain.DTO;
+
+import lombok.Builder;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Data
+@Builder
+public class ResponseTranslationGetDTO {
+    UUID translationId;
+    UUID userId;
+    String translationWord;
+    Double probability;
+    LocalDateTime createdAt;
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/domain/TranslationDAO.java

@@ -0,0 +1,24 @@
+package HalfFifty.HalfFifty_BE.translation.domain;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import lombok.*;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Entity
+@NoArgsConstructor
+@AllArgsConstructor
+@Getter
+@Setter
+@Builder
+public class TranslationDAO {
+    @Id @GeneratedValue(strategy = GenerationType.AUTO)
+    UUID translationId;
+    UUID userId;
+    String translationWord;
+    LocalDateTime createdAt;
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/repository/TranslationRepositoryJPA.java

@@ -0,0 +1,11 @@
+package HalfFifty.HalfFifty_BE.translation.repository;
+
+import HalfFifty.HalfFifty_BE.translation.domain.TranslationDAO;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.UUID;
+
+@Repository
+public interface TranslationRepositoryJPA extends JpaRepository<TranslationDAO, UUID> {
+}

HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/translation/service/TranslationService.java

@@ -0,0 +1,36 @@
+package HalfFifty.HalfFifty_BE.translation.service;
+
+import HalfFifty.HalfFifty_BE.translation.bean.FlaskSignLanguageBean;
+import HalfFifty.HalfFifty_BE.translation.bean.SaveTranslationBean;
+import HalfFifty.HalfFifty_BE.translation.domain.DTO.RequestSignLanguageDTO;
+import HalfFifty.HalfFifty_BE.translation.domain.DTO.ResponseTranslationGetDTO;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.Map;
+
+
+@Service
+public class TranslationService {
+    SaveTranslationBean saveTranslationBean;
+    FlaskSignLanguageBean flaskSignLanguageBean;
+
+    @Autowired
+    public TranslationService(SaveTranslationBean saveTranslationBean, FlaskSignLanguageBean flaskSignLanguageBean) {
+        this.saveTranslationBean = saveTranslationBean;
+        this.flaskSignLanguageBean = flaskSignLanguageBean;
+    }
+
+    public ResponseTranslationGetDTO signLanguageTranslation(RequestSignLanguageDTO requestSignLanguageDTO) {
+        Map<String, Object> aiResponse = flaskSignLanguageBean.exec(requestSignLanguageDTO);
+
+        if (aiResponse != null && Boolean.TRUE.equals(aiResponse.get("success"))) {
+            String translatedWord = (String) aiResponse.get("predicted_label");
+            Double probability = (Double) aiResponse.get("confidence");
+            return saveTranslationBean.exec(requestSignLanguageDTO.getUserId(), translatedWord, probability);
+        } else {
+            return null;
+        }
+    }
+
+}

HalfFifty_BE/src/main/resources/application.properties

@@ -13,4 +13,7 @@ spring.jpa.properties.hibernate.format_sql=true
 spring.datasource.driver-class-name=${DB_DRIVER_CLASS_NAME}
 spring.datasource.url=${DB_URL}
 spring.datasource.username=${DB_USERNAME}
-spring.datasource.password=${DB_PASSWORD}
+spring.datasource.password=${DB_PASSWORD}
+
+# lambda
+aws.lambda.functionName = myLambda