[feat] 서버 사용 신청

src/main/java/DGU_AI_LAB/admin_be/domain/alarm/controller/AlarmController.java

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+package DGU_AI_LAB.admin_be.domain.alarm.controller;
+
+import DGU_AI_LAB.admin_be.domain.alarm.controller.docs.AlarmApi;
+import DGU_AI_LAB.admin_be.domain.alarm.dto.request.CombinedAlertRequestDTO;
+import DGU_AI_LAB.admin_be.domain.alarm.dto.request.EmailRequestDTO;
+import DGU_AI_LAB.admin_be.domain.alarm.dto.request.SlackDMRequestDTO;
+import DGU_AI_LAB.admin_be.domain.alarm.service.AlarmService;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/alert")
+public class AlarmController implements AlarmApi {
+
+    private final AlarmService alarmService;
+
+    @PostMapping("/dm")
+    public ResponseEntity<String> sendSlackDMAlert(@RequestBody @Valid SlackDMRequestDTO request) {
+        alarmService.sendDMAlert(request.username(), request.email(), request.message());
+        return ResponseEntity.ok("Alert sent to Slack DM");
+    }
+
+    @PostMapping("/email")
+    public ResponseEntity<?> sendEmailAlert(@RequestBody @Valid EmailRequestDTO request) {
+        alarmService.sendMailAlert(request.to(), request.subject(), request.body());
+        return ResponseEntity.ok("Alert sent to Email");
+    }
+
+    @PostMapping
+    public ResponseEntity<String> sendAllAlerts(@RequestBody @Valid CombinedAlertRequestDTO request) {
+        alarmService.sendAllAlerts(
+                request.username(),
+                request.email(),
+                request.subject(),
+                request.message()
+        );
+        return ResponseEntity.ok("Alert sent to Slack DM and Email");
+    }
+}

src/main/java/DGU_AI_LAB/admin_be/domain/alarm/controller/docs/AlarmApi.java

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+package DGU_AI_LAB.admin_be.domain.alarm.controller.docs;
+
+import DGU_AI_LAB.admin_be.domain.alarm.dto.request.CombinedAlertRequestDTO;
+import DGU_AI_LAB.admin_be.domain.alarm.dto.request.EmailRequestDTO;
+import DGU_AI_LAB.admin_be.domain.alarm.dto.request.SlackDMRequestDTO;
+import DGU_AI_LAB.admin_be.global.common.SuccessResponse;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.parameters.RequestBody;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import org.springframework.http.ResponseEntity;
+
+@Tag(name = "Slack 및 E-mail", description = "Slack 및 Email 알림 API")
+public interface AlarmApi {
+
+    @Operation(
+            summary = "Slack DM 알림 전송",
+            description = "Slack 사용자에게 개인 DM으로 알림 메시지를 전송합니다. 이름이 중복될 경우 이메일이 일치하는 사용자에게 전송됩니다."
+    )
+    @ApiResponse(
+            responseCode = "200", description = "Slack DM 전송 성공",
+            content = @Content(schema = @Schema(implementation = SuccessResponse.class))
+    )
+    ResponseEntity<?> sendSlackDMAlert(
+            @RequestBody(description = "Slack DM 알림 요청 DTO", required = true)
+            @Valid SlackDMRequestDTO request
+    );
+
+    @Operation(
+            summary = "Email 알림 전송",
+            description = "Email로 알림 메시지를 전송합니다."
+    )
+    @ApiResponse(
+            responseCode = "200", description = "Email 전송 성공",
+            content = @Content(schema = @Schema(implementation = SuccessResponse.class))
+    )
+    ResponseEntity<?> sendEmailAlert(
+            @RequestBody(description = "이메일 알림 요청 DTO", required = true)
+            @Valid EmailRequestDTO request
+    );
+
+    @Operation(
+            summary = "Slack DM + Email 통합 알림 전송",
+            description = "Slack DM과 Email을 동시에 전송합니다."
+    )
+    @ApiResponse(
+            responseCode = "200", description = "Slack + Email 알림 전송 성공",
+            content = @Content(schema = @Schema(implementation = SuccessResponse.class))
+    )
+    ResponseEntity<?> sendAllAlerts(
+            @RequestBody(description = "통합 알림 요청 DTO", required = true)
+            @Valid CombinedAlertRequestDTO request
+    );
+}

src/main/java/DGU_AI_LAB/admin_be/domain/alarm/dto/request/CombinedAlertRequestDTO.java

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+package DGU_AI_LAB.admin_be.domain.alarm.dto.request;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+import lombok.Builder;
+
+@Builder
+public record CombinedAlertRequestDTO(
+        @NotBlank
+        String username,
+
+        @NotBlank
+        @Email
+        String email,
+
+        @NotBlank
+        String subject,
+
+        @NotBlank
+        String message
+) {}

src/main/java/DGU_AI_LAB/admin_be/domain/alarm/dto/request/EmailRequestDTO.java

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+package DGU_AI_LAB.admin_be.domain.alarm.dto.request;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+import lombok.Builder;
+
+@Builder
+public record EmailRequestDTO(
+        @NotBlank
+        @Email
+        String to,
+
+        @NotBlank
+        String subject,
+
+        @NotBlank
+        String body
+) {}

src/main/java/DGU_AI_LAB/admin_be/domain/alarm/dto/request/SlackDMRequestDTO.java

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+package DGU_AI_LAB.admin_be.domain.alarm.dto.request;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+import lombok.Builder;
+
+@Builder
+public record SlackDMRequestDTO(
+        @NotBlank
+        String username,
+
+        @NotBlank
+        @Email
+        String email,
+
+        @NotBlank
+        String message
+) {}

src/main/java/DGU_AI_LAB/admin_be/domain/alarm/service/AlarmService.java

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+package DGU_AI_LAB.admin_be.domain.alarm.service;
+
+import DGU_AI_LAB.admin_be.error.exception.BusinessException;
+import lombok.extern.log4j.Log4j2;
+import org.springframework.beans.factory.annotation.Value;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.*;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.mail.SimpleMailMessage;
+import org.springframework.mail.javamail.JavaMailSender;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+// import java.util.Map;
+import DGU_AI_LAB.admin_be.error.ErrorCode;
+
+@Service
+@RequiredArgsConstructor
+@Log4j2
+public class AlarmService {
+
+    @Value("${slack-webhook-url.monitoring}")
+    private String defaultWebhookUrl;
+
+    @Value("${slack.bot-token}")
+    private String botToken;
+    private final RestTemplate restTemplate = new RestTemplate();
+
+    private final JavaMailSender mailSender;
+
+    @Value("${spring.mail.username}")
+    private String from;
+
+    public void sendSlackAlert(String message) {
+        sendSlackAlert(message, null);
+    }
+
+    public void sendSlackAlert(String message, String webhookUrl) {
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+
+        Map<String, String> payload = Map.of("text", message);
+        HttpEntity<Map<String, String>> request = new HttpEntity<>(payload, headers);
+
+        String urlToUse = (webhookUrl != null && !webhookUrl.isEmpty()) ? webhookUrl : defaultWebhookUrl;
+
+        ResponseEntity<String> response = restTemplate.postForEntity(urlToUse, request, String.class);
+
+        if (!response.getStatusCode().is2xxSuccessful()) {
+            log.debug("Slack 알림 전송 실패: {}", response.getStatusCode());
+        } else {
+            log.debug("Slack 알림 전송 성공");
+        }
+    }
+    public void sendMailAlert(String to, String subject, String body) {
+        SimpleMailMessage message = new SimpleMailMessage();
+        message.setFrom(from);
+        message.setTo(to);
+        message.setSubject(subject);
+        message.setText(body);
+        mailSender.send(message);
+        System.out.printf("메일 전송 성공: 수신자=%s, 제목=%s%n", to, subject);
+    }
+
+    // slack dm 전송
+    public void sendDMAlert(String username, String email, String message) {
+        String userId = getSlackUser(username, email, botToken);
+        if (userId == null) {
+            throw new BusinessException(ErrorCode.SLACK_USER_NOT_FOUND);
+        }
+
+        String channelId = openDMChannel(userId, botToken);
+        if (channelId == null) {
+            throw new BusinessException(ErrorCode.SLACK_DM_CHANNEL_FAILED);
+        }
+
+        try {
+            sendMessageToSlackChannel(channelId, message, botToken);
+        } catch (Exception e) {
+            throw new BusinessException(ErrorCode.SLACK_SEND_FAILED);
+        }
+    }
+
+    // 이름이 일치하는 사용자에게 dm 전송
+    // 이름이 같은 사용자가 있는 경우 email이 일치하는 사용자에게 dm 전송
+    private String getSlackUser(String username, String email, String token) {
+        String url = "https://slack.com/api/users.list";
+        HttpHeaders headers = new HttpHeaders();
+        headers.setBearerAuth(token);
+        HttpEntity<Void> request = new HttpEntity<>(headers);
+
+        ResponseEntity<Map> response = restTemplate.exchange(url, HttpMethod.GET, request, Map.class);
+        if (!Boolean.TRUE.equals(response.getBody().get("ok"))) {
+            throw new BusinessException(ErrorCode.SLACK_USER_NOT_FOUND);
+        }
+
+        List<Map<String, Object>> members = (List<Map<String, Object>>) response.getBody().get("members");
+
+        // 이름이 일치하는 사용자 목록 필터링
+        List<Map<String, Object>> matchedUsers = members.stream()
+                .filter(user -> {
+                    Map<String, Object> profile = (Map<String, Object>) user.get("profile");
+                    String displayName = (String) profile.get("display_name");
+                    String realName = (String) profile.get("real_name");
+                    String name = (String) user.get("name");
+
+                    return username.equals(name) || username.equals(displayName) || username.equals(realName);
+                })
+                .collect(Collectors.toList());
+
+        if (matchedUsers.isEmpty()) {
+            throw new BusinessException(ErrorCode.SLACK_USER_NOT_FOUND);
+        }
+
+        if (matchedUsers.size() == 1) {
+            return (String) matchedUsers.get(0).get("id");
+        }
+
+        Map<String, Object> selectedUser = matchedUsers.stream()
+                .filter(user -> {
+                    Map<String, Object> profile = (Map<String, Object>) user.get("profile");
+                    String userEmail = (String) profile.get("email");
+                    return userEmail != null && userEmail.equalsIgnoreCase(email);
+                })
+                .findFirst()
+                .orElseThrow(() -> new BusinessException(ErrorCode.SLACK_USER_EMAIL_NOT_MATCH));
+
+        return (String) selectedUser.get("id");
+    }
+
+    private String openDMChannel(String userId, String token) {
+        String url = "https://slack.com/api/conversations.open";
+        HttpHeaders headers = new HttpHeaders();
+        headers.setBearerAuth(token);
+        headers.setContentType(MediaType.APPLICATION_JSON);
+
+        Map<String, Object> body = Map.of("users", userId);
+        HttpEntity<Map<String, Object>> request = new HttpEntity<>(body, headers);
+
+        ResponseEntity<Map> response = restTemplate.postForEntity(url, request, Map.class);
+        if (Boolean.TRUE.equals(response.getBody().get("ok"))) {
+            Map channel = (Map) response.getBody().get("channel");
+            return (String) channel.get("id");
+        }
+        return null;
+    }
+
+    private void sendMessageToSlackChannel(String channelId, String message, String token) {
+        String url = "https://slack.com/api/chat.postMessage";
+        HttpHeaders headers = new HttpHeaders();
+        headers.setBearerAuth(token);
+        headers.setContentType(MediaType.APPLICATION_JSON);
+
+        Map<String, Object> body = Map.of(
+                "channel", channelId,
+                "text", message
+        );
+        HttpEntity<Map<String, Object>> request = new HttpEntity<>(body, headers);
+
+        ResponseEntity<Map> response = restTemplate.postForEntity(url, request, Map.class);
+        if (!Boolean.TRUE.equals(response.getBody().get("ok"))) {
+            throw new BusinessException(ErrorCode.SLACK_SEND_FAILED);
+        }
+    }
+
+    public void sendAllAlerts(String username, String email, String subject, String message) {
+        sendDMAlert(username, email, message);
+        sendMailAlert(email, subject, message);
+    }
+}

src/main/java/DGU_AI_LAB/admin_be/domain/containerImage/controller/ContainerImageController.java

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+package DGU_AI_LAB.admin_be.domain.containerImage.controller;
+
+import DGU_AI_LAB.admin_be.domain.containerImage.controller.docs.ContainerImageApi;
+import DGU_AI_LAB.admin_be.domain.containerImage.dto.request.ContainerImageCreateRequest;
+import DGU_AI_LAB.admin_be.domain.containerImage.dto.response.ContainerImageResponseDTO;
+import DGU_AI_LAB.admin_be.domain.containerImage.service.ContainerImageService;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/images")
+public class ContainerImageController implements ContainerImageApi {
+
+    private final ContainerImageService containerImageService;
+
+    @PostMapping
+    public ResponseEntity<ContainerImageResponseDTO> createImage(
+            @RequestBody @Valid ContainerImageCreateRequest request
+    ) {
+        ContainerImageResponseDTO createdImage = containerImageService.createImage(request);
+        return ResponseEntity.ok(createdImage);
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<ContainerImageResponseDTO> getImageById(@PathVariable Long id) {
+        return ResponseEntity.ok(containerImageService.getImageById(id));
+    }
+
+    @GetMapping
+    public ResponseEntity<List<ContainerImageResponseDTO>> getAllImages() {
+        return ResponseEntity.ok(containerImageService.getAllImages());
+    }
+}