전첵적인 리팩토링

src/main/java/com/sendback/domain/project/controller/ProjectController.java

@@ -20,9 +20,7 @@
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
-
 import java.util.List;
-
 import static com.sendback.global.common.ApiResponse.success;
 
 @RestController
@@ -96,13 +94,9 @@ public ApiResponse<Object> deleteProject(
 
     @GetMapping("/recommend")
     public ApiResponse<List<RecommendedProjectResponseDto>> getRecommendedProject() {
-        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
-        if (authentication.getPrincipal() == "anonymousUser") {
-            return success(projectService.getRecommendedProject(null));
-        }
-        Long userId = (Long) authentication.getPrincipal();
-        return success(projectService.getRecommendedProject(userId));
+        return success(projectService.getRecommendedProject());
     }
+
     @PutMapping("/{projectId}/pull-up")
     public ApiResponse<PullUpProjectResponseDto> pullUpProject(
             @UserId Long userId,

src/main/java/com/sendback/domain/project/dto/response/RecommendedProjectResponseDto.java

@@ -1,6 +1,10 @@
 package com.sendback.domain.project.dto.response;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
 import com.sendback.domain.project.entity.Project;
 import java.time.LocalDateTime;
 
@@ -11,19 +15,22 @@ public record RecommendedProjectResponseDto (
     String title,
     String summary,
     String createdBy,
+
     @JsonFormat(pattern = "yyyy.MM.dd")
+    @JsonSerialize(using = LocalDateTimeSerializer.class)
+    @JsonDeserialize(using = LocalDateTimeDeserializer.class)
     LocalDateTime createdAt,
 
     String profileImageUrl
 ){
     public static RecommendedProjectResponseDto of(Project project) {
         return new RecommendedProjectResponseDto(
                 project.getId(),
+                project.getSummary(),
+                project.getUser().getNickname(),
                 project.getProgress().getValue(),
                 project.getFieldName().getName(),
                 project.getTitle(),
-                project.getSummary(),
-                project.getUser().getNickname(),
                 project.getCreatedAt(),
                 project.getUser().getProfileImageUrl()
         );

src/main/java/com/sendback/domain/project/service/ProjectService.java

@@ -1,6 +1,5 @@
 package com.sendback.domain.project.service;
 
-import com.sendback.domain.field.entity.Field;
 import com.sendback.domain.field.repository.FieldRepository;
 import com.sendback.domain.like.repository.LikeRepository;
 import com.sendback.domain.project.dto.request.SaveProjectRequestDto;
@@ -21,16 +20,17 @@
 import com.sendback.global.common.CustomPage;
 import com.sendback.global.common.constants.FieldName;
 import com.sendback.global.config.image.service.ImageService;
+import com.sendback.global.config.redis.RedisService;
 import com.sendback.global.exception.type.BadRequestException;
 import com.sendback.global.exception.type.NotFoundException;
 import lombok.RequiredArgsConstructor;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 import java.util.Optional;
@@ -49,6 +49,7 @@ public class ProjectService {
     private final ScrapRepository scrapRepository;
 
     private final FieldRepository fieldRepository;
+    private final RedisService redisService;
 
     public ProjectDetailResponseDto getProjectDetail(Long userId, Long projectId) {
         Project project = getProjectById(projectId);
@@ -115,23 +116,13 @@ public void deleteProject(Long userId, Long projectId) {
         projectRepository.delete(project);
     }
 
-    public List<RecommendedProjectResponseDto> getRecommendedProject(Long userId){
-        List<RecommendedProjectResponseDto> responseDtos = new ArrayList<>();
-        if(userId!=null) {
-            List<Field> fieldList = fieldRepository.findAllByUserId(userId);
-            List<FieldName> fieldNameList = fieldList.stream().map(Field::getName).collect(Collectors.toList());
-            List<Project> projects = projectRepository.findRecommendedProjects(fieldNameList, 12);
-            responseDtos.addAll(projects.stream().map(project -> RecommendedProjectResponseDto.of(project)).collect(Collectors.toList()));
-            if(projects.size()<12) {
-                List<Project> extraProject = projectRepository.findRecommendedProjects(12 - projects.size());
-                responseDtos.addAll(extraProject.stream().map(project -> RecommendedProjectResponseDto.of(project)).collect(Collectors.toList()));
-            }
-        }
-        else{
-            List<Project> projects = projectRepository.findRecommendedProjects(12);
-            responseDtos.addAll(projects.stream().map(project -> RecommendedProjectResponseDto.of(project)).collect(Collectors.toList()));
-        }
-        return responseDtos;
+
+    @Cacheable(value = "recommend", cacheManager = "redisCacheManager")
+    public List<RecommendedProjectResponseDto> getRecommendedProject() {
+        List<Project> projects = projectRepository.findRecommendedProjects(12);
+        return projects.stream()
+                .map(RecommendedProjectResponseDto::of)
+                .collect(Collectors.toList());
     }
 
     public void validateProjectAuthor(User user, Project project) {

src/main/java/com/sendback/global/common/BaseEntity.java

@@ -1,5 +1,9 @@
 package com.sendback.global.common;
 
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
 import jakarta.persistence.Column;
 import jakarta.persistence.EntityListeners;
 import jakarta.persistence.MappedSuperclass;
@@ -8,6 +12,7 @@
 import org.springframework.data.annotation.LastModifiedDate;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
 
+import java.io.Serializable;
 import java.time.LocalDateTime;
 
 @EntityListeners(AuditingEntityListener.class)
@@ -17,10 +22,14 @@ public class BaseEntity {
 
     @CreatedDate
     @Column(updatable = false)
+    @JsonSerialize(using = LocalDateTimeSerializer.class)
+    @JsonDeserialize(using = LocalDateTimeDeserializer.class)
     private LocalDateTime createdAt;
 
     @LastModifiedDate
     @Column(insertable = false)
+    @JsonSerialize(using = LocalDateTimeSerializer.class)
+    @JsonDeserialize(using = LocalDateTimeDeserializer.class)
     private LocalDateTime updatedAt;
 
 }

src/main/java/com/sendback/global/config/redis/RedisConfig.java

@@ -1,16 +1,27 @@
 package com.sendback.global.config.redis;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.cache.RedisCacheManager;
 import org.springframework.data.redis.connection.RedisConnectionFactory;
 import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.data.redis.repository.configuration.EnableRedisRepositories;
 import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
 import org.springframework.data.redis.serializer.StringRedisSerializer;
 
+import java.time.Duration;
+import java.util.HashMap;
+import java.util.Map;
+
 @Configuration
 @EnableRedisRepositories
 public class RedisConfig {
@@ -21,6 +32,15 @@ public class RedisConfig {
     @Value("${spring.data.redis.port}")
     private int redisPort;
 
+
+    // jackson LocalDateTime mapper
+    @Bean
+    public ObjectMapper objectMapper() {
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); // timestamp 형식 안따르도록 설정
+        mapper.registerModules(new JavaTimeModule(), new Jdk8Module()); // LocalDateTime 매핑을 위해 모듈 활성화
+        return mapper;
+    }
     @Bean
     public RedisConnectionFactory redisConnectionFactory() {
         return new LettuceConnectionFactory(redisHost, redisPort);
@@ -33,8 +53,40 @@ public RedisTemplate<String, Object> redisTemplate() {
         redisTemplate.setKeySerializer(new StringRedisSerializer());
         redisTemplate.setHashKeySerializer(new StringRedisSerializer());
         redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
-        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
+        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer(objectMapper()));
         return redisTemplate;
     }
 
+    @Bean
+    public RedisCacheManager redisCacheManager(RedisConnectionFactory redisConnectionFactory) {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new JavaTimeModule());
+        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
+        GenericJackson2JsonRedisSerializer genericJackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer(objectMapper);
+
+        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
+                .serializeKeysWith(RedisSerializationContext
+                        .SerializationPair
+                        .fromSerializer(new StringRedisSerializer()))
+                .serializeValuesWith(RedisSerializationContext
+                        .SerializationPair
+                        .fromSerializer(genericJackson2JsonRedisSerializer));
+
+        Map<String, RedisCacheConfiguration> cacheConfiguration = new HashMap<>();
+        cacheConfiguration.put("recommend", redisCacheConfiguration.entryTtl(Duration.ofSeconds(1800L)).disableCachingNullValues()
+                .serializeKeysWith(
+                        RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer())
+                )
+                .serializeValuesWith(
+                        RedisSerializationContext.SerializationPair.fromSerializer(genericJackson2JsonRedisSerializer)
+                ));;
+
+
+        return RedisCacheManager
+                .RedisCacheManagerBuilder
+                .fromConnectionFactory(redisConnectionFactory)
+                .cacheDefaults(redisCacheConfiguration)
+                .build();
+    }
+
 }

src/main/java/com/sendback/global/config/redis/RedisService.java

@@ -5,9 +5,9 @@
 import org.springframework.data.redis.core.ValueOperations;
 import org.springframework.stereotype.Component;
 import org.springframework.stereotype.Service;
-
 import java.time.Duration;
 import java.util.Date;
+import java.util.concurrent.TimeUnit;
 
 @RequiredArgsConstructor
 @Component
@@ -16,6 +16,14 @@ public class RedisService {
 
     private final RedisTemplate<String, Object> redisTemplate;
 
+    public Object getValues(String key) {
+        return redisTemplate.opsForValue().get(key);
+    }
+
+    public void setValues(String key, Object data, long timeout, TimeUnit unit) {
+        redisTemplate.opsForValue().set(key, data, timeout, unit);
+    }
+
     public void put(Long userId, String refreshToken, Date expiredDate) {
         Date now = new Date();
         long expirationSeconds = (expiredDate.getTime() - now.getTime()) / 1000;

src/test/java/com/sendback/domain/auth/fixture/AuthFixture.java

@@ -0,0 +1,8 @@
+package com.sendback.domain.auth.fixture;
+
+import com.sendback.domain.auth.dto.Token;
+
+public class AuthFixture {
+
+    public static final Token NEW_TOKEN = new Token("new_access_token", "new_refresh_token");
+}

src/test/java/com/sendback/domain/auth/service/AuthServiceTest.java

@@ -0,0 +1,58 @@
+package com.sendback.domain.auth.service;
+
+import com.sendback.domain.auth.dto.Token;
+import com.sendback.global.config.jwt.JwtProvider;
+import com.sendback.global.config.redis.RedisService;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import static com.sendback.domain.auth.fixture.AuthFixture.*;
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+class AuthServiceTest {
+
+    @InjectMocks
+    AuthService authService;
+    @Mock
+    RedisService redisService;
+    @Mock
+    JwtProvider jwtProvider;
+
+    @Test
+    @DisplayName("토큰 재발급시 access token, refresh token을 재발급한다.")
+    void reissueToken() {
+        // given
+        String refresh_token = "valid_refresh_token";
+        Long user_id = 123L;
+        given(jwtProvider.parseRefreshToken(refresh_token)).willReturn(user_id);
+        given(jwtProvider.issueToken(user_id)).willReturn(NEW_TOKEN);
+
+        // when
+        Token result = authService.reissueToken(refresh_token);
+
+        // then
+        assertNotNull(result);
+        assertEquals(NEW_TOKEN.accessToken(), result.accessToken());
+        assertEquals(NEW_TOKEN.refreshToken(), result.refreshToken());
+    }
+
+    @Test
+    @DisplayName("로그아웃을 진행하면 redis에서 해당 유저의 refresh token을 삭제한다.")
+    void logoutSocial() {
+        // given
+        Long user_id = 123L;
+        doNothing().when(redisService).delete(user_id);
+
+        // when
+        authService.logoutSocial(user_id);
+
+        // then
+        verify(redisService, times(1)).delete(user_id);
+    }
+}

src/test/java/com/sendback/domain/comment/persister/CommentFixture.java → src/test/java/com/sendback/domain/comment/fixture/CommentFixture.java

@@ -1,12 +1,9 @@
-package com.sendback.domain.comment.persister;
+package com.sendback.domain.comment.fixture;
 
 import com.sendback.domain.comment.entity.Comment;
 import com.sendback.domain.project.entity.Project;
 import com.sendback.domain.user.entity.User;
 
-import static com.sendback.domain.project.fixture.ProjectFixture.createDummyProject;
-import static com.sendback.domain.user.fixture.UserFixture.createDummyUser;
-
 public class CommentFixture {
 
     public static Comment createDummyComment(User user, Project project){

src/test/java/com/sendback/domain/comment/service/CommentServiceTest.java

@@ -22,7 +22,7 @@
 import java.util.List;
 import java.util.Optional;
 import static com.sendback.domain.comment.exception.CommentExceptionType.NOT_COMMENT_AUTHOR;
-import static com.sendback.domain.comment.persister.CommentFixture.createDummyComment;
+import static com.sendback.domain.comment.fixture.CommentFixture.createDummyComment;
 import static com.sendback.domain.project.fixture.ProjectFixture.createDummyProject;
 import static com.sendback.domain.user.fixture.UserFixture.*;
 import static org.assertj.core.api.AssertionsForClassTypes.assertThat;

src/test/java/com/sendback/domain/project/controller/ProjectControllerTest.java

@@ -562,7 +562,7 @@ public void getRecommended_success() throws Exception {
             List<RecommendedProjectResponseDto> responseDtos = new ArrayList<>();
             responseDtos.add(recommendedProjectResponseDto);
 
-            given(projectService.getRecommendedProject(anyLong())).willReturn(responseDtos);
+            given(projectService.getRecommendedProject()).willReturn(responseDtos);
 
             // when
             ResultActions resultActions = mockMvc.perform(get("/api/projects/recommend")
@@ -607,7 +607,7 @@ public void getRecommended_success() throws Exception {
                                     fieldWithPath("data[].profileImageUrl").type(JsonFieldType.STRING)
                                             .description("프로필 이미지")
                             )));
-            verify(projectService).getRecommendedProject(anyLong());
+            verify(projectService).getRecommendedProject();
         }
     }
     @Nested

src/test/java/com/sendback/domain/project/fixture/ProjectFixture.java

@@ -9,11 +9,9 @@
 import com.sendback.domain.project.entity.Project;
 import com.sendback.domain.user.entity.User;
 import com.sendback.global.common.constants.FieldName;
-
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.List;
-
 import static com.sendback.domain.user.fixture.UserFixture.mock_user;
 
 public class ProjectFixture {