[COZY-493] feat: 회원가입시 디스코드로 알림 보내는 기능 구현

build.gradle

@@ -81,6 +81,9 @@ dependencies {
     implementation 'io.sentry:sentry-spring-boot-starter-jakarta:7.20.0'
     implementation 'io.sentry:sentry-jdbc:7.20.0'
 
+    // webflux
+    implementation 'org.springframework.boot:spring-boot-starter-webflux'
+
 }
 
 tasks.named('test') {

src/main/java/com/cozymate/cozymate_server/domain/member/service/MemberCommandService.java

@@ -40,6 +40,8 @@ public class MemberCommandService {
 
     private final MailService mailService;
 
+    private final SignUpNotificationService signUpNotificationService;
+
     /**
      * 닉네임 유효성 검사 메서드
      *
@@ -98,9 +100,11 @@ public SignInResponseDTO signUp(String clientId,
         University memberUniversity = universityRepository.findById(signUpRequestDTO.universityId())
             .orElseThrow(() -> new GeneralException(ErrorStatus._UNIVERSITY_NOT_FOUND));
 
-        memberRepository.save(
+        Member member = memberRepository.save(
             MemberConverter.toMember(clientId, signUpRequestDTO, memberUniversity));
 
+        signUpNotificationService.sendSignUpNotification(member);
+
         // 기존 회원으로 로그인 처리
         return signInByExistingMember(clientId);
     }

src/main/java/com/cozymate/cozymate_server/domain/member/service/SignUpNotificationService.java

@@ -0,0 +1,59 @@
+package com.cozymate.cozymate_server.domain.member.service;
+
+import com.cozymate.cozymate_server.domain.member.Member;
+import com.cozymate.cozymate_server.global.logging.enums.MdcKey;
+import java.time.LocalDateTime;
+import java.util.HashMap;
+import java.util.Map;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.slf4j.MDC;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+import org.springframework.web.reactive.function.client.WebClient;
+
+@Service
+@RequiredArgsConstructor
+@Slf4j
+public class SignUpNotificationService {
+
+
+    @Value("${discord.webhook-url}")
+    private String signUpNotificationUri;
+
+    public void sendSignUpNotification(Member member) {
+        // WebClient를 사용하여 AWS Lambda로 회원가입 알림을 보냄
+        WebClient webClient = WebClient.builder().baseUrl(signUpNotificationUri).build();
+
+        Map<String, String> contentMap = new HashMap<>();
+
+        StringBuilder contentBuilder = new StringBuilder();
+        contentBuilder.append("### 새로운 유저 등장!\n");
+        contentBuilder.append("**")
+            .append("Id").append("**: ")
+            .append(member.getId()).append("\n");
+        contentBuilder.append("**")
+            .append("Nickname").append("**: ")
+            .append(member.getNickname()).append("\n");
+        contentBuilder.append("**")
+            .append("Gender").append("**: ")
+            .append(member.getGender()).append("\n");
+        contentBuilder.append("**")
+            .append("SocialType").append("**: ")
+            .append(member.getSocialType()).append("\n");
+        contentBuilder.append("**")
+            .append("Platform").append("**: ")
+            .append(MDC.get(MdcKey.REQEUST_AGENT.toString())).append("\n");
+        contentBuilder.append("-# ").append(LocalDateTime.now().toString()).append("\n");
+        contentMap.put("content", contentBuilder.toString());
+
+        // Non-Blocking 방식으로 호출하고 응답을 기다리지 않음
+        webClient.post()
+            .bodyValue(contentMap)
+            .retrieve()
+            .bodyToMono(Void.class)
+            .subscribe();
+
+    }
+
+}