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5 changes: 5 additions & 0 deletions build.gradle
Original file line number Diff line number Diff line change
Expand Up @@ -43,8 +43,13 @@ dependencies {
implementation 'software.amazon.awssdk:s3:2.26.12'
runtimeOnly 'org.postgresql:postgresql'

// 헬스 체크
implementation 'org.springframework.boot:spring-boot-starter-actuator'

// 재시도
implementation 'org.springframework.retry:spring-retry:2.0.10'

// 롬복
compileOnly 'org.projectlombok:lombok'
annotationProcessor 'org.projectlombok:lombok'

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Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,10 @@
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
import org.springframework.retry.annotation.EnableRetry;
import org.springframework.scheduling.annotation.EnableScheduling;

@EnableRetry
@EnableJpaAuditing
@EnableScheduling
@SpringBootApplication
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Original file line number Diff line number Diff line change
@@ -1,41 +1,40 @@
package io.wisoft.prepair.prepair_api.external.notification.email;

import io.wisoft.prepair.prepair_api.common.exception.BusinessException;
import io.wisoft.prepair.prepair_api.common.exception.ErrorCode;
import jakarta.mail.MessagingException;
import jakarta.mail.internet.MimeMessage;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.mail.MailException;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.retry.annotation.Backoff;
import org.springframework.retry.annotation.Retryable;
import org.springframework.stereotype.Service;

@Slf4j
@Service
@RequiredArgsConstructor
public class EmailService {

private final EmailTemplateBuilder emailTemplateBuilder;
private final JavaMailSender mailSender;

public void sendInterviewQuestion(String email, String nickname, String questionTag, String question) {
@Retryable(
value = {MessagingException.class, MailException.class},
maxAttempts = 3,
backoff = @Backoff(delay = 1000, multiplier = 2)
)
public void send(String email, String nickname, String questionTag, String question) throws MessagingException {
String html = emailTemplateBuilder.buildInterviewQuestionHtml(nickname, questionTag, question);
send(email, "[PrePair] 오늘의 면접 질문이 도착했어요!", html);
sendMail(email, "[PrePair] 오늘의 면접 질문이 도착했어요!", html);
}

private void send(String to, String subject, String html) {
try {
MimeMessage message = mailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(message, false, "UTF-8");
private void sendMail(String to, String subject, String html) throws MessagingException {
MimeMessage message = mailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(message, false, "UTF-8");

helper.setTo(to);
helper.setSubject(subject);
helper.setText(html, true);
helper.setTo(to);
helper.setSubject(subject);
helper.setText(html, true);

mailSender.send(message);
} catch (MessagingException | MailException e) {
throw new BusinessException(ErrorCode.EMAIL_SEND_FAILED);
}
mailSender.send(message);
}
}
}
Original file line number Diff line number Diff line change
@@ -1,23 +1,29 @@
package io.wisoft.prepair.prepair_api.external.notification.kakao;

import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.MediaType;
import org.springframework.retry.annotation.Backoff;
import org.springframework.retry.annotation.Retryable;
import org.springframework.stereotype.Service;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.HttpServerErrorException;
import org.springframework.web.client.ResourceAccessException;
import org.springframework.web.client.RestClient;

@Slf4j
@Service
@RequiredArgsConstructor
public class KakaoService {

private final RestClient restClient;
private static final String URL = "https://kapi.kakao.com/v2/api/talk/memo/default/send";

public void sendInterviewQuestion(String kakaoAccessToken, String question, String questionTag) {
@Retryable(
value = {HttpServerErrorException.class, ResourceAccessException.class},
maxAttempts = 3,
backoff = @Backoff(delay = 1000, multiplier = 2)
)
public void send(String kakaoAccessToken, String question, String questionTag) {
String templateJson = """
{
"object_type": "text",
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Original file line number Diff line number Diff line change
@@ -0,0 +1,66 @@
package io.wisoft.prepair.prepair_api.interview.question.service;

import io.wisoft.prepair.prepair_api.external.member.dto.MemberSchedulerInfo;
import io.wisoft.prepair.prepair_api.external.member.enums.Notification;
import io.wisoft.prepair.prepair_api.external.notification.email.EmailService;
import io.wisoft.prepair.prepair_api.external.notification.kakao.KakaoService;
import io.wisoft.prepair.prepair_api.interview.question.entity.InterviewQuestion;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.web.client.HttpClientErrorException;

@Slf4j
@Service
@RequiredArgsConstructor
public class QuestionNotificationService {

private final EmailService emailService;
private final KakaoService kakaoService;

public void notifyMember(MemberSchedulerInfo member, InterviewQuestion question) {
Notification notification = member.notification();

if (notification == Notification.EMAIL || notification == Notification.BOTH) {
sendEmail(member, question);
}

if (notification == Notification.KAKAO || notification == Notification.BOTH) {
sendKakao(member, question);
}
}

private void sendEmail(MemberSchedulerInfo member, InterviewQuestion question) {
try {
emailService.send(
member.email(),
member.nickname(),
question.getQuestionTag(),
question.getQuestion()
);
log.info("이메일 발송 완료 | memberId={}", member.id());
} catch (Exception e) {
log.error("이메일 발송 실패 | memberId={}", member.id(), e);
}
}

private void sendKakao(MemberSchedulerInfo member, InterviewQuestion question) {
if (member.kakaoAccessToken() == null || member.kakaoAccessToken().isBlank()) {
log.warn("멤버 스킵 | memberId={} | reason=no_kakao_token", member.id());
return;
}

try {
kakaoService.send(
member.kakaoAccessToken(),
question.getQuestion(),
question.getQuestionTag()
);
log.info("카카오 발송 완료 | memberId={}", member.id());
} catch (HttpClientErrorException.Unauthorized e) {
log.warn("카카오 발송 실패 | memberId={} | reason=token_expired", member.id());
} catch (Exception e) {
log.error("카카오 발송 실패 | memberId={}", member.id(), e);
}
}
}
Original file line number Diff line number Diff line change
@@ -1,19 +1,15 @@
package io.wisoft.prepair.prepair_api.interview.question.service;

import io.wisoft.prepair.prepair_api.external.member.enums.Notification;
import io.wisoft.prepair.prepair_api.external.member.MemberServiceClient;
import io.wisoft.prepair.prepair_api.external.member.dto.MemberSchedulerInfo;
import io.wisoft.prepair.prepair_api.external.openai.OpenAiClient;
import io.wisoft.prepair.prepair_api.external.openai.dto.QuestionWithTags;
import io.wisoft.prepair.prepair_api.external.notification.email.EmailService;
import io.wisoft.prepair.prepair_api.external.notification.kakao.KakaoService;
import io.wisoft.prepair.prepair_api.interview.prompt.PromptBuilder;
import io.wisoft.prepair.prepair_api.interview.question.entity.InterviewQuestion;
import io.wisoft.prepair.prepair_api.interview.question.repository.QuestionRepository;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.web.client.HttpClientErrorException;

import java.time.DayOfWeek;
import java.time.LocalDate;
Expand All @@ -23,17 +19,16 @@
@Slf4j
@Service
@RequiredArgsConstructor
public class DailyQuestionGenerationService {
public class TodayQuestionService {

private final QuestionPersistenceService questionPersistenceService;
private final QuestionNotificationService questionNotificationService;
private final QuestionRepository questionRepository;
private final QuestionPersistenceService interviewQuestionService;
private final MemberServiceClient memberServiceClient;
private final OpenAiClient openAiClient;
private final PromptBuilder promptBuilder;
private final EmailService emailService;
private final KakaoService kakaoService;

public void generateTodayQuestions() {
public void sendTodayQuestions() {
List<MemberSchedulerInfo> members = memberServiceClient.getMembers();
DayOfWeek today = LocalDate.now(ZoneId.of("Asia/Seoul")).getDayOfWeek();

Expand All @@ -45,77 +40,36 @@ public void generateTodayQuestions() {
.toList();

log.info("질문 생성 대상: {} / {} 명", targetMembers.size(), members.size());
targetMembers.forEach(this::processTodayQuestion);
targetMembers.forEach(this::generateAndSend);
}

private void processTodayQuestion(MemberSchedulerInfo member) {
private void generateAndSend(MemberSchedulerInfo member) {
try {
List<InterviewQuestion> previousQuestions = questionRepository.findByMemberId(member.id());
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medium

questionRepository.findByMemberId(member.id())는 해당 회원의 모든 과거 질문 데이터를 조회합니다. 서비스 사용 기간이 길어짐에 따라 조회되는 데이터 양이 많아지면 성능 저하와 메모리 부하를 초래할 수 있습니다. 프롬프트 생성에 필요한 최근 질문들만 조회하도록 제한(예: findTop10ByMemberIdOrderByCreatedAtDesc)하는 로직으로 개선이 필요합니다.

String prompt = promptBuilder.buildDailyQuestionPrompt(member.job(), previousQuestions);
QuestionWithTags result = openAiClient.generateQuestion(prompt);
log.info("질문 생성 완료 | memberId={}", member.id());

InterviewQuestion question = interviewQuestionService.saveTodayQuestion(member.id(), result);
InterviewQuestion question = questionPersistenceService.saveTodayQuestion(member.id(), result);
log.info("질문 저장 완료 | memberId={}", member.id());

notifyMember(member, question);
questionNotificationService.notifyMember(member, question);
} catch (Exception e) {
log.error("질문 처리 실패 | memberId={}", member.id(), e);
}
}

private void notifyMember(MemberSchedulerInfo member, InterviewQuestion question) {
Notification notification = member.notification();

if (notification == Notification.EMAIL || notification == Notification.BOTH) {
sendEmail(member, question);
}

if (notification == Notification.KAKAO || notification == Notification.BOTH) {
sendKakao(member, question);
}
}

private void sendEmail(MemberSchedulerInfo member, InterviewQuestion question) {
try {
emailService.sendInterviewQuestion(
member.email(),
member.nickname(),
question.getQuestionTag(),
question.getQuestion()
);
log.info("이메일 발송 완료 | memberId={}", member.id());
} catch (Exception e) {
log.error("이메일 발송 실패 | memberId={}", member.id(), e);
}
}

private void sendKakao(MemberSchedulerInfo member, InterviewQuestion question) {
if (!isValidKakaoToken(member)) return;
try {
kakaoService.sendInterviewQuestion(
member.kakaoAccessToken(),
question.getQuestion(),
question.getQuestionTag()
);
log.info("카카오 발송 완료 | memberId={}", member.id());
} catch (HttpClientErrorException.Unauthorized e) {
log.warn("카카오 발송 실패 | memberId={} | reason=token_expired", member.id());
} catch (Exception e) {
log.error("카카오 발송 실패 | memberId={}", member.id(), e);
private boolean isValidFrequency(MemberSchedulerInfo member) {
if (member.frequency() == null) {
log.warn("멤버 스킵 | memberId={} | reason=no_frequency", member.id());
return false;
}
return true;
}

private boolean shouldSendToday(MemberSchedulerInfo member, DayOfWeek today) {
return switch (member.frequency()) {
case EVERY -> true;
case WEEKLY -> today == DayOfWeek.MONDAY;
};
}

private boolean isValidKakaoToken(MemberSchedulerInfo member) {
if (member.kakaoAccessToken() == null || member.kakaoAccessToken().isBlank()) {
log.warn("멤버 스킵 | memberId={} | reason=no_kakao_token", member.id());
private boolean isValidJob(MemberSchedulerInfo member) {
if (member.job() == null || member.job().isBlank()) {
log.warn("멤버 스킵 | memberId={} | reason=no_job", member.id());
return false;
}
return true;
Expand All @@ -129,20 +83,10 @@ private boolean isValidNotification(MemberSchedulerInfo member) {
return true;
}

private boolean isValidFrequency(MemberSchedulerInfo member) {
if (member.frequency() == null) {
log.warn("멤버 스킵 | memberId={} | reason=no_frequency", member.id());
return false;
}
return true;
}

private boolean isValidJob(MemberSchedulerInfo member) {
if (member.job() == null || member.job().isBlank()) {
log.warn("멤버 스킵 | memberId={} | reason=no_job", member.id());
return false;
}
return true;
private boolean shouldSendToday(MemberSchedulerInfo member, DayOfWeek today) {
return switch (member.frequency()) {
case EVERY -> true;
case WEEKLY -> today == DayOfWeek.MONDAY;
};
}

}
Original file line number Diff line number Diff line change
@@ -1,31 +1,35 @@
package io.wisoft.prepair.prepair_api.scheduler;

import io.wisoft.prepair.prepair_api.interview.question.service.DailyQuestionGenerationService;
import io.wisoft.prepair.prepair_api.interview.question.service.TodayQuestionService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.MDC;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;
import java.util.UUID;

@Slf4j
@Component
@RequiredArgsConstructor
public class TodayQuestionScheduler {

private final DailyQuestionGenerationService dailyQuestionGenerationService;
private final TodayQuestionService todayQuestionService;

@Scheduled(cron = "0 0 9 * * *")
@Scheduled(cron = "0 0 9 * * *", zone = "Asia/Seoul")
public void generateTodayQuestions() {
String correlationId = "SCHEDULER-" + UUID.randomUUID().toString();
String correlationId = "SCHEDULER-" + UUID.randomUUID();
MDC.put("correlationId", correlationId);
long startTime = System.currentTimeMillis();

try {
log.info("오늘의 질문 생성 스케줄러 시작 - {}", LocalDateTime.now());
dailyQuestionGenerationService.generateTodayQuestions();
log.info("오늘의 질문 생성 스케줄러 종료");
} finally {
log.info("오늘의 질문 생성 스케줄러 시작");
todayQuestionService.sendTodayQuestions();
log.info("오늘의 질문 생성 스케줄러 종료 | elapsed={}ms", System.currentTimeMillis() - startTime);
} catch(Exception e) {
log.error("오늘의 질문 생성 스케줄러 실패 | elapsed={}ms", System.currentTimeMillis() - startTime, e);
}
finally {
MDC.remove("correlationId");
}
}
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