FRESH!プロジェクト／Server Side Kotlin 活用事例 / CA.kt #3

CA.kt #3
https://cyberagent.connpass.com/event/67662/

Transcript

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11. 1 object Validator { 2 inline fun <reified T> validBody(req: ServerRequest): T = 3 try { 4 req.bodyToMono(T::class.java).block() 5 ?: throw BadRequestException("invalid body") 6 } catch (e: DecodingException) { 7 throw BadRequestException("decoding error") 8 } 9 } 3FJpFE
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    %4- 1 @Configuration 2 class Routes(private val taskHandler: TaskHandler, 3 private val authFilter: AuthFilter) { 4 @Bean 5 fun apis() = router { 6 (accept(MediaType.APPLICATION_JSON) and "/tasks").nest { 7 GET("/{id}", taskHandler::getTask) 8 POST("/", taskHandler::postTask) 9 } 10 }.filter(authFilter) 11 } w 4QSJOH͔Βͷ৽ػೳͰ"1*ϧʔςΟϯάͷ%4-
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17. 3PVUFS
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    %4- 1 @Component 2 class TaskHandler(private val taskRepository: TaskRepository) { 3 4 fun getTask(req: ServerRequest): Mono<ServerResponse> = 5 (req.pathVariable("id").toLongOrNull() 6 ?: throw WebAppException.BadRequestException("required id")).let { 7 ServerResponse.ok().json().body(Mono.just(taskRepository.getTaskById(it))) 8 } 9 10 fun postTask(req: ServerRequest): Mono<ServerResponse> = 11 Validator.validBody<RequestCreateTask>(req).let { 12 taskRepository.createTask(it.title, it.description).let { 13 ServerResponse.ok().json().body(Mono.just(it)) 14 } 15 } 16 } (ServerRequest) -> Mono<ServerResponse> w UBTL
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20. 1 // src/main/java/app/dao/TaskDao.java 2 3 @ConfigAutowireable 4 @Dao 5 public interface TaskDao { 6 @Select 7 Task selectById(Long id); 8 } %PNB
     1 // src/main/resources/META-INF/app/dao/TaskDao/selectById.sql 2 3 SELECT * FROM task WHERE task_id = /*id*/0 w 42-ςϯϓϨʔτͱ%BPΫϥεͷϚοϐϯά
21. %PNB
     1 @Entity(immutable = true) 2 @Table(name = "task") 3 data class Task( 4 @Id 5 @GeneratedValue(strategy = GenerationType.IDENTITY) 6 @Column(name = "task_id") 7 val id: Int? = null, 8 @Column(name = "title") 9 val title: String, 10 @Column(name = "finished_at") 11 val finishedAt: LocalDateTime?, 12 @Column(name = "created_at") 13 val createdAt: LocalDateTime, 14 @Column(name = "updated_at") 15 val updatedAt: LocalDateTime 16 ) w ΤϯςΟςΟ͸EBUB
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     1 @Repository 2 class TaskRepository(val dao: TaskDao) { 3 4 fun updateById(id: Long, title: String) { 5 val entity = dao.selectById(id) ?: 6 throw RepositoryException.NotFoundException("not found") 7 val now = LocalDateTime.now() 8 dao.update(entity.copy(title = title, updatedAt = now)).let { 9 if (it == 0) 10 throw RepositoryException.UpdateNotFoundException("not found") 11 } 12 } 13 } w EBUB
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23. %PNB
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