diff --git a/2024-05/spring-38-reactor/.gitignore b/2024-05/spring-38-reactor/.gitignore new file mode 100644 index 00000000..fbe7a1ed --- /dev/null +++ b/2024-05/spring-38-reactor/.gitignore @@ -0,0 +1,7 @@ +.idea/ +*.iml + +target/ + +/node_modules +/output diff --git a/2024-05/spring-38-reactor/pom.xml b/2024-05/spring-38-reactor/pom.xml new file mode 100644 index 00000000..5e72688e --- /dev/null +++ b/2024-05/spring-38-reactor/pom.xml @@ -0,0 +1,70 @@ + + + 4.0.0 + + ru.otus + spring-38-reactor + 1.0-SNAPSHOT + + + org.springframework.boot + spring-boot-starter-parent + 3.1.0 + + + + 17 + 17 + + + + + + io.projectreactor + reactor-bom + 2022.0.7 + pom + import + + + org.springframework.boot + spring-boot-dependencies + 3.1.0 + pom + import + + + + + + + + io.projectreactor + reactor-core + + + + ch.qos.logback + logback-classic + + + + io.projectreactor + reactor-test + test + + + org.junit.jupiter + junit-jupiter + test + + + org.assertj + assertj-core + test + + + + diff --git a/2024-05/spring-38-reactor/src/main/java/ru/otus/CreateExample.java b/2024-05/spring-38-reactor/src/main/java/ru/otus/CreateExample.java new file mode 100644 index 00000000..a6999373 --- /dev/null +++ b/2024-05/spring-38-reactor/src/main/java/ru/otus/CreateExample.java @@ -0,0 +1,74 @@ +package ru.otus; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import reactor.core.Disposable; +import reactor.core.publisher.Flux; + +public class CreateExample { + private static final Logger logger = LoggerFactory.getLogger(CreateExample.class); + + public static void main(String[] args) { + onEachNext(); + lazyObservable(); + creatorExample(); + } + + private static void onEachNext() { + Flux obs = Flux.just("one", "two", "three"); + obs.doFirst(() -> logger.info("Starting:")) + .doOnComplete(() -> logger.info("The end!")) + .doOnEach(item -> logger.info("item_1:{}", item.get())) + .subscribe(); + + logger.info("-----"); + + obs.doOnNext(item -> logger.info("item_2:{}", item)) + .map(String::length) + .doOnNext(item -> logger.info("length_2:{}", item)) + .subscribe(); + } + + private static void lazyObservable() { + Flux obs = Flux.defer(() -> { + logger.info("creating new Observable"); + return Flux.just("one", "two", "three"); + }); + + obs.doOnNext(item -> logger.info("item_1:{}", item)) + .subscribe(); + + logger.info("---------------"); + + obs.doOnNext(item -> logger.info("item_2:{}", item)) + .subscribe(); + } + + private static void creatorExample() { + Flux obs = Flux.create(emitter -> { + emitter.next("one"); + emitter.next("two"); + + emitter.error(new RuntimeException("Error!")); + + emitter.next("three"); + emitter.complete(); + }); + + obs.onErrorResume(e -> { + logger.error("error:{}", e.getMessage(), e); + return Flux.just("r1", "r2", "r3"); + }) + .doOnNext(item -> logger.info("item__1:{}", item)) + .subscribe(); + + logger.info("---------------"); + + Disposable disposable = obs.doOnNext(item -> logger.info("item__2:{}", item)) + .subscribe(next -> logger.info("next:{}", next), + error -> logger.info("error:{}", error.getMessage()), + () -> logger.info("onComplete")); + + logger.info("isDisposed:{}", disposable.isDisposed()); + } +} diff --git a/2024-05/spring-38-reactor/src/main/java/ru/otus/OperatorsExample.java b/2024-05/spring-38-reactor/src/main/java/ru/otus/OperatorsExample.java new file mode 100644 index 00000000..c36f4d4a --- /dev/null +++ b/2024-05/spring-38-reactor/src/main/java/ru/otus/OperatorsExample.java @@ -0,0 +1,51 @@ +package ru.otus; + +import java.time.LocalDate; +import java.util.List; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import reactor.core.publisher.Flux; + + +public class OperatorsExample { + private static final Logger logger = LoggerFactory.getLogger(OperatorsExample.class); + + public static void main(String[] args) { + merge(); + fromList(); + } + + private static void merge() { + var listFlux1 = Flux.fromIterable(List.of( + new Person("John", "Dow", "male", LocalDate.of(1992, 3, 12)), + new Person("Jane", "Dow", "female", LocalDate.of(2001, 6, 23)))); + + var listFlux2 = Flux.fromIterable(List.of( + new Person("Howard", "Lovecraft", "male", LocalDate.of(1890, 8, 20)), + new Person("Joanne", "Rowling", "female", LocalDate.of(1965, 6, 30)))); + + var listFlux3 = Flux.fromIterable(List.of( + new Person("Ivan", "Petrov", "male", LocalDate.of(1890, 2, 10)), + new Person("Joanne", "Stuard", "female", LocalDate.of(1965, 1, 3)))); + + Flux.merge(listFlux1, listFlux2, listFlux3) + .subscribe(person -> logger.info("person:{}", person)); + + } + + private static void fromList() { + var persons = List.of( + new Person("John", "Dow", "male", LocalDate.of(1992, 3, 12)), + new Person("Jane", "Dow", "female", LocalDate.of(2001, 6, 23)), + new Person("Howard", "Lovecraft", "male", LocalDate.of(1890, 8, 20)), + new Person("Joanne", "Rowling", "female", LocalDate.of(1965, 6, 30))); + + var disposable = Flux.fromIterable(persons) + .filter(person -> person.birth().isAfter(LocalDate.of(1990, 1, 1))) + .map(p -> p.firstName() + " " + p.lastName()) + .collectList() + .subscribe(item -> logger.info("item: {}", item)); + + logger.info("disposable.isDisposed:{}", disposable.isDisposed()); + } +} diff --git a/2024-05/spring-38-reactor/src/main/java/ru/otus/Person.java b/2024-05/spring-38-reactor/src/main/java/ru/otus/Person.java new file mode 100644 index 00000000..ddbe5422 --- /dev/null +++ b/2024-05/spring-38-reactor/src/main/java/ru/otus/Person.java @@ -0,0 +1,6 @@ +package ru.otus; + +import java.time.LocalDate; + +public record Person(String firstName, String lastName, String gender, LocalDate birth) { +} diff --git a/2024-05/spring-38-reactor/src/main/java/ru/otus/PublisherExample.java b/2024-05/spring-38-reactor/src/main/java/ru/otus/PublisherExample.java new file mode 100644 index 00000000..aaab7853 --- /dev/null +++ b/2024-05/spring-38-reactor/src/main/java/ru/otus/PublisherExample.java @@ -0,0 +1,56 @@ +package ru.otus; + +import java.time.Duration; +import java.util.function.BiFunction; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import reactor.core.publisher.ConnectableFlux; +import reactor.core.publisher.Flux; +import reactor.core.publisher.SynchronousSink; +import reactor.core.scheduler.Schedulers; + +public class PublisherExample { + private static final Logger logger = LoggerFactory.getLogger(PublisherExample.class); + + public static void main(String[] args) throws Exception { + publisherExample(); + } + + public static void publisherExample() throws InterruptedException { + Flux ob = magicPublisher(); + Thread.sleep(5000); + logger.info("First subscribed"); + var disposable1 = ob.subscribe(item -> logger.info("item: {}", item)); + + logger.info("disposable1.isDisposed:{}", disposable1.isDisposed()); + Thread.sleep(5000); + + logger.info("Second subscribed"); + var disposable2 = ob.subscribe(item -> logger.info("item second: {}", item)); + + + logger.info("disposable2.isDisposed():{}", disposable2.isDisposed()); + + Thread.sleep(60_000); + } + + public static Flux magicPublisher() { + var schedulerGenerator = Schedulers.newParallel("generator", 1); + var generator = Flux.generate( + () -> 0L, + (BiFunction, Long>) + (prev, sink) -> { + var newValue = prev + 1; + sink.next(newValue); + logger.info("newValue:{}", newValue); + return newValue; + }) + .delayElements(Duration.ofSeconds(5), schedulerGenerator) + .map(id -> "new id:" + id) + .doOnNext(val -> logger.info("val:{}", val)); + + ConnectableFlux generatorConnectable = generator.publish(); + + return generatorConnectable.autoConnect(0); + } +} diff --git a/2024-05/spring-40-webflux/.gitignore b/2024-05/spring-40-webflux/.gitignore new file mode 100644 index 00000000..e62c33c2 --- /dev/null +++ b/2024-05/spring-40-webflux/.gitignore @@ -0,0 +1,4 @@ +.idea/ +*.iml + +target/ diff --git a/2024-05/spring-40-webflux/HttpRequests.http b/2024-05/spring-40-webflux/HttpRequests.http new file mode 100644 index 00000000..962c235e --- /dev/null +++ b/2024-05/spring-40-webflux/HttpRequests.http @@ -0,0 +1,47 @@ +### +GET http://localhost:8080/flux/one +Accept: */* +Content-Type: application/json +Cache-Control: no-cache + +### +GET http://localhost:8080/flux/ten +Accept: */* +Content-Type: application/json +Cache-Control: no-cache + +### +GET http://localhost:8080/stream +Accept: */* +Content-Type: application/json +Cache-Control: no-cache + +### +GET http://localhost:8080/person +Accept: */* +Content-Type: application/json +Cache-Control: no-cache + +### +GET curl +Accept: */* +Content-Type: application/json +Cache-Control: no-cache + +### +GET http://localhost:8080/func/person?name=Lermontov +Accept: */* +Content-Type: application/json +Cache-Control: no-cache + +### +GET http://localhost:8080/func/person?age=22 +Accept: */* +Content-Type: application/json +Cache-Control: no-cache + +### +GET http://localhost:8080/func/person/1 +Accept: */* +Content-Type: application/json +Cache-Control: no-cache diff --git a/2024-05/spring-40-webflux/docker/runDb.src b/2024-05/spring-40-webflux/docker/runDb.src new file mode 100755 index 00000000..26e770fa --- /dev/null +++ b/2024-05/spring-40-webflux/docker/runDb.src @@ -0,0 +1,6 @@ +docker run --rm --name pg-docker \ +-e POSTGRES_PASSWORD=pwd \ +-e POSTGRES_USER=usr \ +-e POSTGRES_DB=demoDB \ +-p 5430:5432 \ +postgres:16 \ No newline at end of file diff --git a/2024-05/spring-40-webflux/pom.xml b/2024-05/spring-40-webflux/pom.xml new file mode 100644 index 00000000..599ecbff --- /dev/null +++ b/2024-05/spring-40-webflux/pom.xml @@ -0,0 +1,82 @@ + + + 4.0.0 + + ru.otus + spring-40-webflux + 1.0 + + + org.springframework.boot + spring-boot-starter-parent + 3.1.0 + + + + 17 + 17 + + + + + org.springframework.boot + spring-boot-starter-webflux + + + + org.springframework.boot + spring-boot-starter-data-jdbc + + + + org.springframework.boot + spring-boot-starter-data-r2dbc + + + + org.flywaydb + flyway-core + + + + io.r2dbc + r2dbc-postgresql + 0.8.13.RELEASE + + + + org.postgresql + postgresql + 42.6.0 + + + + org.jetbrains + annotations + 24.0.1 + + + + + io.projectreactor + reactor-test + test + + + org.springframework.boot + spring-boot-starter-test + test + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/DataFiller.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/DataFiller.java new file mode 100644 index 00000000..6fd45d59 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/DataFiller.java @@ -0,0 +1,52 @@ +package ru.otus.spring; + +import java.util.Arrays; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.boot.ApplicationArguments; +import org.springframework.boot.ApplicationRunner; +import org.springframework.stereotype.Component; +import reactor.core.scheduler.Scheduler; +import ru.otus.spring.domain.Notes; +import ru.otus.spring.domain.Person; +import ru.otus.spring.repository.NotesRepository; +import ru.otus.spring.repository.PersonRepository; +import ru.otus.spring.repository.PersonRepositoryCustom; + +@Component +public class DataFiller implements ApplicationRunner { + private static final Logger logger = LoggerFactory.getLogger(DataFiller.class); + + private final PersonRepository personRepository; + private final NotesRepository notesRepository; + private final PersonRepositoryCustom personRepositoryCustom; + private final Scheduler workerPool; + + public DataFiller(PersonRepository personRepository, NotesRepository notesRepository, PersonRepositoryCustom personRepositoryCustom, Scheduler workerPool) { + this.personRepository = personRepository; + this.notesRepository = notesRepository; + this.workerPool = workerPool; + this.personRepositoryCustom = personRepositoryCustom; + } + + @Override + public void run(ApplicationArguments args) { + personRepository.saveAll(Arrays.asList( + new Person("Pushkin", 22), + new Person("Lermontov", 22), + new Person("Tolstoy", 60) + )).publishOn(workerPool) + .subscribe(savedPerson -> { + logger.info("saved person:{}", savedPerson); + notesRepository.saveAll(Arrays.asList( + new Notes(null, "txt_1_" + savedPerson.getId(), savedPerson.getId()), + new Notes(null, "txt_2_" + savedPerson.getId(), savedPerson.getId()))) + .publishOn(workerPool) + .subscribe(savedNotes -> logger.info("saved notes:{}", savedNotes)); + }); + + personRepositoryCustom.findAll() + .publishOn(workerPool) + .subscribe(personDto -> logger.info("personDto:{}", personDto)); + } +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/FunctionalEndpointsConfig.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/FunctionalEndpointsConfig.java new file mode 100644 index 00000000..8ef166d9 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/FunctionalEndpointsConfig.java @@ -0,0 +1,69 @@ +package ru.otus.spring; + +import org.apache.commons.lang3.StringUtils; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.http.MediaType; +import org.springframework.web.reactive.function.server.RouterFunction; +import org.springframework.web.reactive.function.server.ServerRequest; +import org.springframework.web.reactive.function.server.ServerResponse; +import reactor.core.publisher.Mono; +import ru.otus.spring.domain.Person; +import ru.otus.spring.repository.PersonRepository; + +import static org.springframework.http.MediaType.APPLICATION_JSON; +import static org.springframework.web.reactive.function.BodyInserters.fromValue; +import static org.springframework.web.reactive.function.server.RequestPredicates.GET; +import static org.springframework.web.reactive.function.server.RequestPredicates.accept; +import static org.springframework.web.reactive.function.server.RequestPredicates.queryParam; +import static org.springframework.web.reactive.function.server.RouterFunctions.route; +import static org.springframework.web.reactive.function.server.ServerResponse.badRequest; +import static org.springframework.web.reactive.function.server.ServerResponse.notFound; +import static org.springframework.web.reactive.function.server.ServerResponse.ok; + +@Configuration +public class FunctionalEndpointsConfig { + @Bean + public RouterFunction composedRoutes(PersonRepository repository) { + return route() + // эта функция должна стоять раньше findAll - порядок следования роутов - важен + .GET("/func/person", + queryParam("name", StringUtils::isNotEmpty), + request -> request.queryParam("name") + .map(name -> ok().body(repository.findAllByLastName(name), Person.class)) + .orElse(badRequest().build()) + ) + // пример другой реализации - начиная с запроса репозитория + .GET("/func/person", queryParam("age", StringUtils::isNotEmpty), + request -> + ok() + .contentType(MediaType.APPLICATION_JSON) + .body(repository.findAllByAge(request.queryParam("age") + .map(Integer::parseInt) + .orElseThrow(IllegalArgumentException::new)), Person.class) + ) + // Обратите внимание на использование хэндлера + .GET("/func/person", accept(APPLICATION_JSON), new PersonHandler(repository)::list) + // Обратите внимание на использование pathVariable + .GET("/func/person/{id}", accept(APPLICATION_JSON), + request -> repository.findById(Long.parseLong(request.pathVariable("id"))) + .flatMap(person -> ok().contentType(APPLICATION_JSON).body(fromValue(person))) + .switchIfEmpty(notFound().build()) + ).build(); + } + + // Это пример хэндлера, который даже не бин + static class PersonHandler { + + private final PersonRepository repository; + + PersonHandler(PersonRepository repository) { + this.repository = repository; + } + + Mono list(ServerRequest request) { + // Обратите внимание на пример другого порядка создания response от Flux + return ok().contentType(APPLICATION_JSON).body(repository.findAll(), Person.class); + } + } +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/WebfluxDemo.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/WebfluxDemo.java new file mode 100644 index 00000000..5bd95469 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/WebfluxDemo.java @@ -0,0 +1,16 @@ +package ru.otus.spring; + + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + + +@SpringBootApplication +public class WebfluxDemo { + + + public static void main(String[] args) { + SpringApplication.run(WebfluxDemo.class); + } +} + diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/config/ApplConfig.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/config/ApplConfig.java new file mode 100644 index 00000000..a6d841f9 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/config/ApplConfig.java @@ -0,0 +1,41 @@ +package ru.otus.spring.config; + +import io.netty.channel.nio.NioEventLoopGroup; +import java.util.concurrent.ThreadFactory; +import java.util.concurrent.atomic.AtomicLong; +import org.springframework.boot.web.embedded.netty.NettyReactiveWebServerFactory; +import org.springframework.boot.web.reactive.server.ReactiveWebServerFactory; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import reactor.core.scheduler.Scheduler; +import reactor.core.scheduler.Schedulers; +import reactor.util.annotation.NonNull; + +@Configuration +public class ApplConfig { + private static final int THREAD_POOL_SIZE = 2; + + @Bean(destroyMethod = "close") + public NioEventLoopGroup eventLoopGroup() { + return new NioEventLoopGroup(THREAD_POOL_SIZE, + new ThreadFactory() { + private final AtomicLong threadIdGenerator = new AtomicLong(0); + @Override + public Thread newThread(@NonNull Runnable task) { + return new Thread(task, "server-thread-" + threadIdGenerator.incrementAndGet()); + } + }); + } + + @Bean + public ReactiveWebServerFactory reactiveWebServerFactory(NioEventLoopGroup eventLoopGroup) { + var factory = new NettyReactiveWebServerFactory(); + factory.addServerCustomizers(builder -> builder.runOn(eventLoopGroup)); + return factory; + } + + @Bean + public Scheduler workerPool() { + return Schedulers.newParallel("worker-thread", THREAD_POOL_SIZE); + } +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/Notes.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/Notes.java new file mode 100644 index 00000000..037cefa4 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/Notes.java @@ -0,0 +1,49 @@ +package ru.otus.spring.domain; + +import org.jetbrains.annotations.NotNull; +import org.springframework.data.annotation.Id; +import org.springframework.data.annotation.PersistenceCreator; +import org.springframework.data.relational.core.mapping.Table; + +@Table("notes") +public class Notes { + + @Id + private final Long id; + + @NotNull + private final String noteText; + + @NotNull + private final Long personId; + + @PersistenceCreator + public Notes(Long id, @NotNull String noteText, @NotNull Long personId) { + this.id = id; + this.noteText = noteText; + this.personId = personId; + } + + public Long getId() { + return id; + } + + @NotNull + public String getNoteText() { + return noteText; + } + + @NotNull + public Long getPersonId() { + return personId; + } + + @Override + public String toString() { + return "Notes{" + + "id=" + id + + ", noteText='" + noteText + '\'' + + ", personId=" + personId + + '}'; + } +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/Person.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/Person.java new file mode 100644 index 00000000..9721a730 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/Person.java @@ -0,0 +1,53 @@ +package ru.otus.spring.domain; + +import org.jetbrains.annotations.NotNull; +import org.springframework.data.annotation.Id; +import org.springframework.data.annotation.PersistenceCreator; +import org.springframework.data.relational.core.mapping.Table; + +@Table("person") +public class Person { + + @Id + private final Long id; + + @NotNull + private final String lastName; + + private final int age; + + + @PersistenceCreator + private Person(Long id, @NotNull String lastName, int age) { + this.id = id; + this.lastName = lastName; + this.age = age; + } + + public Person(String lastName, int age) { + this(null, lastName, age); + } + + public Long getId() { + return id; + } + + + public @NotNull String getLastName() { + return lastName; + } + + + public int getAge() { + return age; + } + + @Override + public String toString() { + return "Person{" + + "id=" + id + + ", lastName='" + lastName + '\'' + + ", age=" + age + + '}'; + } +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/PersonDto.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/PersonDto.java new file mode 100644 index 00000000..08e8383f --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/domain/PersonDto.java @@ -0,0 +1,8 @@ +package ru.otus.spring.domain; + + +import java.util.List; + +public record PersonDto(String id, String name, Integer age, List notes) { + +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/NotesRepository.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/NotesRepository.java new file mode 100644 index 00000000..38145043 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/NotesRepository.java @@ -0,0 +1,12 @@ +package ru.otus.spring.repository; + +import org.jetbrains.annotations.NotNull; +import org.springframework.data.repository.reactive.ReactiveCrudRepository; +import reactor.core.publisher.Flux; +import ru.otus.spring.domain.Notes; + + +public interface NotesRepository extends ReactiveCrudRepository { + + Flux findByPersonId(@NotNull Long personId); +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/PersonRepository.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/PersonRepository.java new file mode 100644 index 00000000..d420f092 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/PersonRepository.java @@ -0,0 +1,18 @@ +package ru.otus.spring.repository; + +import org.jetbrains.annotations.NotNull; +import org.springframework.data.repository.reactive.ReactiveCrudRepository; +import reactor.core.publisher.Flux; +import reactor.core.publisher.Mono; +import ru.otus.spring.domain.Person; + +public interface PersonRepository extends ReactiveCrudRepository { + + @NotNull Mono findById(@NotNull Long id); + + Mono save(Mono person); + + Flux findAllByLastName(String lastName); + + Flux findAllByAge(int age); +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/PersonRepositoryCustom.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/PersonRepositoryCustom.java new file mode 100644 index 00000000..993eb822 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/repository/PersonRepositoryCustom.java @@ -0,0 +1,55 @@ +package ru.otus.spring.repository; + +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.core.type.TypeReference; +import com.fasterxml.jackson.databind.ObjectMapper; +import io.r2dbc.spi.Readable; +import org.springframework.data.r2dbc.core.R2dbcEntityTemplate; +import org.springframework.stereotype.Repository; +import reactor.core.publisher.Flux; +import ru.otus.spring.domain.PersonDto; + +import java.util.List; + + +@Repository +public class PersonRepositoryCustom { + + private final R2dbcEntityTemplate template; + private final ObjectMapper objectMapper; + + private static final String SQL_ALL = """ + select json_agg(n.note_text) as notes, n.person_id, + p.last_name, p.age + from notes n + inner join person p + on n.person_id = p.id + group by n.person_id, p.last_name, p.age + """; + + public PersonRepositoryCustom(R2dbcEntityTemplate template, ObjectMapper objectMapper) { + this.template = template; + this.objectMapper = objectMapper; + } + + public Flux findAll() { + return template.getDatabaseClient().inConnectionMany(connection -> + Flux.from(connection.createStatement(SQL_ALL) + .execute()) + .flatMap(result -> result.map(this::mapper))); + } + + private PersonDto mapper(Readable selectedRecord) { + var notesAsText = selectedRecord.get("notes", String.class); + try { + List notes = objectMapper.readValue(notesAsText, new TypeReference<>() { + }); + return new PersonDto(selectedRecord.get("person_id", String.class), + selectedRecord.get("last_name", String.class), + selectedRecord.get("age", Integer.class), + notes); + } catch (JsonProcessingException e) { + throw new IllegalArgumentException("notes:" + notesAsText + " parsing error:" + e); + } + } +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/rest/AnnotatedController.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/rest/AnnotatedController.java new file mode 100644 index 00000000..b37dcd86 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/rest/AnnotatedController.java @@ -0,0 +1,49 @@ +package ru.otus.spring.rest; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.http.MediaType; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RestController; +import reactor.core.publisher.Flux; +import reactor.core.publisher.Mono; + +import java.time.Duration; +import reactor.core.scheduler.Scheduler; + + +@RestController +public class AnnotatedController { + private static final Logger logger = LoggerFactory.getLogger(AnnotatedController.class); + + private final Scheduler workerPool; + + public AnnotatedController(Scheduler workerPool) { + this.workerPool = workerPool; + } + + @GetMapping("/flux/one") + public Mono one() { + return Mono.just("one"); + } + + @GetMapping(path ="/flux/ten", produces = MediaType.TEXT_EVENT_STREAM_VALUE) + public Flux list() { + logger.info("list request"); + return Flux.range(1, 10) + .delayElements(Duration.ofSeconds(1), workerPool) + .doOnNext(val -> logger.info("value:{}", val)); + } + + @GetMapping(path = "/stream", produces = MediaType.TEXT_EVENT_STREAM_VALUE) + public Flux stream() { + logger.info("stream"); + return Flux.generate(() -> 0, (state, emitter) -> { + emitter.next(state); + return state + 1; + }) + .delayElements(Duration.ofSeconds(1L)) + .map(Object::toString) + .map(val -> String.format("valStr:%s", val)); + } +} diff --git a/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/rest/PersonController.java b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/rest/PersonController.java new file mode 100644 index 00000000..8518d2e9 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/java/ru/otus/spring/rest/PersonController.java @@ -0,0 +1,57 @@ +package ru.otus.spring.rest; + +import org.springframework.http.ResponseEntity; +import org.springframework.web.bind.annotation.*; +import reactor.core.publisher.Flux; +import reactor.core.publisher.Mono; +import ru.otus.spring.domain.Notes; +import ru.otus.spring.domain.Person; +import ru.otus.spring.domain.PersonDto; +import ru.otus.spring.repository.NotesRepository; +import ru.otus.spring.repository.PersonRepository; +import ru.otus.spring.repository.PersonRepositoryCustom; + +import java.util.List; + +@RestController +public class PersonController { + + private final PersonRepository personRepository; + private final NotesRepository notesRepository; + + private final PersonRepositoryCustom personRepositoryCustom; + + public PersonController(PersonRepository personRepository, NotesRepository notesRepository, PersonRepositoryCustom personRepositoryCustom) { + this.personRepository = personRepository; + this.notesRepository = notesRepository; + this.personRepositoryCustom = personRepositoryCustom; + } + + @GetMapping("/person") + public Flux all() { + return personRepositoryCustom.findAll(); + } + + @GetMapping("/person/{id}") + public Mono> byId(@PathVariable("id") Long id) { + return personRepository.findById(id) + .flatMap(person -> notesRepository.findByPersonId(person.getId()).map(Notes::getNoteText).collectList() + .map(notes -> toDto(person, notes))) + .map(ResponseEntity::ok) + .switchIfEmpty(Mono.fromCallable(() -> ResponseEntity.notFound().build())); + } + + @PostMapping("/person") + public Mono save(@RequestBody Mono dto) { + return personRepository.save(dto); + } + + @GetMapping("/person/find") + public Flux byName(@RequestParam("name") String name) { + return personRepository.findAllByLastName(name); + } + + private PersonDto toDto(Person person, List notes) { + return new PersonDto(String.valueOf(person.getId()), person.getLastName(), person.getAge(), notes); + } +} diff --git a/2024-05/spring-40-webflux/src/main/resources/application.yml b/2024-05/spring-40-webflux/src/main/resources/application.yml new file mode 100644 index 00000000..5935fcc0 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/resources/application.yml @@ -0,0 +1,17 @@ +server: + port: 8080 + +spring: + r2dbc: + url: r2dbc:postgresql://localhost:5430/demoDB + username: usr + password: pwd + flyway: + url: jdbc:postgresql://localhost:5430/demoDB + user: usr + password: pwd + + +logging: + level: + org.springframework.jdbc.core.JdbcTemplate: TRACE diff --git a/2024-05/spring-40-webflux/src/main/resources/db/migration/V1__initial_schema.sql b/2024-05/spring-40-webflux/src/main/resources/db/migration/V1__initial_schema.sql new file mode 100644 index 00000000..4f0a4eb0 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/resources/db/migration/V1__initial_schema.sql @@ -0,0 +1,15 @@ +create table person +( + id bigserial not null primary key, + last_name varchar(50) not null, + age int not null +); + +create table notes +( + id bigserial not null primary key, + note_text varchar(250) not null, + person_id bigint not null references person (id) +); +create index idx_notes_person_id on notes (person_id); + diff --git a/2024-05/spring-40-webflux/src/main/resources/logback.xml b/2024-05/spring-40-webflux/src/main/resources/logback.xml new file mode 100644 index 00000000..b1f9bfe2 --- /dev/null +++ b/2024-05/spring-40-webflux/src/main/resources/logback.xml @@ -0,0 +1,11 @@ + + + + %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + + + + + diff --git a/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/repository/PersonRepositoryTest.java b/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/repository/PersonRepositoryTest.java new file mode 100644 index 00000000..5ed22cc5 --- /dev/null +++ b/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/repository/PersonRepositoryTest.java @@ -0,0 +1,29 @@ +package ru.otus.spring.repository; + +import org.junit.jupiter.api.Test; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.autoconfigure.data.mongo.DataMongoTest; +import org.springframework.boot.test.context.SpringBootTest; +import reactor.core.publisher.Mono; +import reactor.test.StepVerifier; +import ru.otus.spring.domain.Person; + +import static org.junit.jupiter.api.Assertions.assertNotNull; + +@SpringBootTest +class PersonRepositoryTest { + + @Autowired + private PersonRepository repository; + + @Test + void shouldSetIdOnSave() { + Mono personMono = repository.save(new Person("Bill", 12)); + + StepVerifier + .create(personMono) + .assertNext(person -> assertNotNull(person.getId())) + .expectComplete() + .verify(); + } +} diff --git a/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/rest/AnnotatedControllerTest.java b/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/rest/AnnotatedControllerTest.java new file mode 100644 index 00000000..95eb4d75 --- /dev/null +++ b/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/rest/AnnotatedControllerTest.java @@ -0,0 +1,96 @@ +package ru.otus.spring.rest; + +import java.time.Duration; +import java.util.List; +import org.assertj.core.api.Assertions; +import org.junit.jupiter.api.Test; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.boot.test.web.server.LocalServerPort; +import org.springframework.http.MediaType; +import org.springframework.test.web.reactive.server.WebTestClient; +import org.springframework.web.reactive.function.client.WebClient; +import reactor.test.StepVerifier; + +import static org.assertj.core.api.Assertions.assertThat; + + +@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) +class AnnotatedControllerTest { + + @Autowired + private WebTestClient webTestClient; + @LocalServerPort + private int port; + + + @Test + void oneTest() { + //given + var client = WebClient.create(String.format("http://localhost:%d", port)); + + //when + var result = client + .get().uri("/flux/one") + .accept(MediaType.APPLICATION_JSON) + .retrieve() + .bodyToMono(String.class) + .timeout(Duration.ofSeconds(3)) + .block(); + + //then + assertThat(result).isEqualTo("one"); + } + + @Test + void streamTest() { + //given + var client = WebClient.create(String.format("http://localhost:%d", port)); + var expectedSize = 5; + + //when + List result = client + .get().uri("/stream") + .accept(MediaType.TEXT_EVENT_STREAM) + .retrieve() + .bodyToFlux(String.class) + .take(expectedSize) + .timeout(Duration.ofSeconds(3)) + .collectList() + .block(); + + //then + assertThat(result).hasSize(expectedSize) + .contains(String.format("valStr:%s", 0), + String.format("valStr:%s", 1), + String.format("valStr:%s", 2), + String.format("valStr:%s", 3), + String.format("valStr:%s", 4)); + } + + @Test + void dataTest() { + //given + var webTestClientForTest = webTestClient.mutate() + .responseTimeout(Duration.ofSeconds(20)) + .build(); + + //when + var result = webTestClientForTest + .get().uri("/flux/ten") + .accept(MediaType.TEXT_EVENT_STREAM) + .exchange() + .expectStatus().isOk() + .returnResult(Integer.class) + .getResponseBody(); + + //then + var step = StepVerifier.create(result); + StepVerifier.Step stepResult = null; + for (var idx = 1; idx <= 10; idx++) { + stepResult = step.expectNext(idx); + } + stepResult.verifyComplete(); + } + +} \ No newline at end of file diff --git a/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/rest/PersonControllerTest.java b/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/rest/PersonControllerTest.java new file mode 100644 index 00000000..71a31505 --- /dev/null +++ b/2024-05/spring-40-webflux/src/test/java/ru/otus/spring/rest/PersonControllerTest.java @@ -0,0 +1,28 @@ +package ru.otus.spring.rest; + +import org.junit.jupiter.api.Test; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.web.reactive.server.WebTestClient; +import org.springframework.web.reactive.function.server.RouterFunction; +import org.springframework.web.reactive.function.server.ServerResponse; + +@SpringBootTest +class PersonControllerTest { + + @Autowired + private RouterFunction route; + + @Test + void testRoute() { + WebTestClient client = WebTestClient + .bindToRouterFunction(route) + .build(); + + client.get() + .uri("/func/person") + .exchange() + .expectStatus() + .isOk(); + } +}