[deploy] develop -> main

src/main/java/DGU_AI_LAB/admin_be/domain/groups/controller/GroupController.java

@@ -0,0 +1,34 @@
+package DGU_AI_LAB.admin_be.domain.groups.controller;
+
+import DGU_AI_LAB.admin_be.domain.groups.dto.response.GroupResponseDTO;
+import DGU_AI_LAB.admin_be.domain.groups.service.GroupService;
+import DGU_AI_LAB.admin_be.global.common.SuccessResponse;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@Slf4j
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/groups")
+public class GroupController {
+
+    private final GroupService groupService;
+
+    /**
+     * 모든 그룹 정보 조회 API
+     * GET /api/groups
+     *
+     * 그룹 ID와 그룹명을 반환합니다.
+     */
+    @GetMapping("")
+    public ResponseEntity<SuccessResponse<?>> getGroups() {
+        List<GroupResponseDTO> groups = groupService.getAllGroups();
+        return SuccessResponse.ok(groups);
+    }
+}

src/main/java/DGU_AI_LAB/admin_be/domain/groups/dto/response/GroupResponseDTO.java

@@ -0,0 +1,17 @@
+package DGU_AI_LAB.admin_be.domain.groups.dto.response;
+
+import DGU_AI_LAB.admin_be.domain.groups.entity.Group;
+import lombok.Builder;
+
+@Builder
+public record GroupResponseDTO(
+        Long ubuntuGid,
+        String groupName
+) {
+    public static GroupResponseDTO fromEntity(Group group) {
+        return GroupResponseDTO.builder()
+                .ubuntuGid(group.getUbuntuGid())
+                .groupName(group.getGroupName())
+                .build();
+    }
+}

src/main/java/DGU_AI_LAB/admin_be/domain/groups/service/GroupService.java

@@ -0,0 +1,42 @@
+package DGU_AI_LAB.admin_be.domain.groups.service;
+
+import DGU_AI_LAB.admin_be.domain.groups.dto.response.GroupResponseDTO;
+import DGU_AI_LAB.admin_be.domain.groups.repository.GroupRepository;
+import DGU_AI_LAB.admin_be.error.ErrorCode;
+import DGU_AI_LAB.admin_be.error.exception.BusinessException;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+@Transactional(readOnly = true)
+public class GroupService {
+
+    private final GroupRepository groupRepository;
+
+    /**
+     * 모든 그룹 정보를 조회하는 API
+     * GET /api/groups
+     */
+    public List<GroupResponseDTO> getAllGroups() {
+        log.info("[getAllGroups] 모든 그룹 정보 조회 시작");
+        var groups = groupRepository.findAll();
+
+        if (groups.isEmpty()) {
+            log.warn("[getAllGroups] 조회된 그룹 정보가 없습니다.");
+            throw new BusinessException(ErrorCode.NO_AVAILABLE_GROUPS);
+        }
+
+        var response = groups.stream()
+                .map(GroupResponseDTO::fromEntity)
+                .toList();
+
+        log.info("[getAllGroups] 모든 그룹 정보 조회 완료. {}개 그룹", response.size());
+        return response;
+    }
+}

src/main/java/DGU_AI_LAB/admin_be/error/ErrorCode.java

@@ -93,6 +93,11 @@ public enum ErrorCode {
     INVALID_PASSWORD(HttpStatus.UNAUTHORIZED, "현재 비밀번호가 일치하지 않습니다."),
     PASSWORD_CHANGE_SAME_AS_OLD(HttpStatus.BAD_REQUEST, "새 비밀번호가 현재 비밀번호와 동일합니다."),
 
+    /**
+     * Group Error
+     */
+    NO_AVAILABLE_GROUPS(HttpStatus.NOT_FOUND, "존재하는 그룹 정보가 없습니다."),
+
 
     /**
      * Approval Error