├── .gitignore ├── .mvn └── wrapper │ ├── maven-wrapper.jar │ └── maven-wrapper.properties ├── LICENSE ├── main-app ├── client-demo-steps.txt ├── pom.xml └── src │ ├── main │ ├── java │ │ └── demo │ │ │ ├── Account.java │ │ │ ├── AccountRepository.java │ │ │ ├── Hobby.java │ │ │ ├── MainApp.java │ │ │ ├── MainController.java │ │ │ ├── Person.java │ │ │ └── client │ │ │ ├── Step1a.java │ │ │ ├── Step2a.java │ │ │ ├── Step2b.java │ │ │ ├── Step2c.java │ │ │ ├── Step2d.java │ │ │ ├── Step2e.java │ │ │ ├── Step3a.java │ │ │ └── package-info.java │ └── resources │ │ ├── application.properties │ │ └── logback.xml │ └── test │ └── java │ └── demo │ └── MainAppTests.java ├── mvnw ├── mvnw.cmd ├── pom.xml └── remote-services ├── pom.xml └── src ├── main ├── java │ └── demo │ │ └── RemoteServiceApp.java └── resources │ └── application.properties └── test └── java └── demo └── RemoteServicesTests.java /.gitignore: -------------------------------------------------------------------------------- 1 | target/ 2 | !.mvn/wrapper/maven-wrapper.jar 3 | 4 | ### STS ### 5 | .apt_generated 6 | .classpath 7 | .factorypath 8 | .project 9 | .settings 10 | .springBeans 11 | 12 | ### IntelliJ IDEA ### 13 | .idea 14 | *.iws 15 | *.iml 16 | *.ipr 17 | 18 | ### NetBeans ### 19 | nbproject/private/ 20 | build/ 21 | nbbuild/ 22 | dist/ 23 | nbdist/ 24 | .nb-gradle/ -------------------------------------------------------------------------------- /.mvn/wrapper/maven-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rstoyanchev/reactive-for-webmvc/42b506f5020b3e4d5642a6aeb8f9536f2ce3af50/.mvn/wrapper/maven-wrapper.jar -------------------------------------------------------------------------------- /.mvn/wrapper/maven-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.3/apache-maven-3.5.3-bin.zip 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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RestTemplate sync, sequential calls 2 | 2a. WebClient deferred nature. Need to subscribe (consume, collect, block) 3 | 2b. Compose on completion of multiple requests 4 | 2c. Singe chain. Try also concatMap, .then().block(), .then(Publisher), etc. 5 | 2d. Retrieve vs exchange (consume body, ResponseEntity), builder options 6 | 2e. Inter-dependant, nested calls 7 | 3. Streaming, lifecycle -------------------------------------------------------------------------------- /main-app/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | 6 | 7 | demo 8 | reactive-for-webmvc 9 | 0.0.1.BUILD-SNAPSHOT 10 | 11 | 12 | main-app 13 | 0.0.1-SNAPSHOT 14 | jar 15 | 16 | Main App 17 | The main application for the demo 18 | 19 | 20 | UTF-8 21 | UTF-8 22 | 1.8 23 | 24 | 25 | 26 | 27 | 28 | org.springframework.boot 29 | spring-boot-starter-web 30 | 31 | 32 | 33 | org.springframework.boot 34 | spring-boot-starter-webflux 35 | 36 | 37 | org.springframework.boot 38 | spring-boot-starter-data-mongodb-reactive 39 | 40 | 41 | de.flapdoodle.embed 42 | de.flapdoodle.embed.mongo 43 | 44 | 45 | 46 | 47 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/Account.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import com.fasterxml.jackson.annotation.JsonCreator; 4 | import com.fasterxml.jackson.annotation.JsonProperty; 5 | 6 | public class Account { 7 | 8 | private final Long id; 9 | 10 | private final int score; 11 | 12 | private final Long personId; 13 | 14 | @JsonCreator 15 | public Account(@JsonProperty("id") Long id, @JsonProperty("score") int score, 16 | @JsonProperty("personId") Long personId) { 17 | 18 | this.id = id; 19 | this.score = score; 20 | this.personId = personId; 21 | } 22 | 23 | public Long getId() { 24 | return id; 25 | } 26 | 27 | public int getScore() { 28 | return score; 29 | } 30 | 31 | public Long getPersonId() { 32 | return personId; 33 | } 34 | 35 | @Override 36 | public String toString() { 37 | return "Account {id=" + this.id + ", score='" + this.score + "'}"; 38 | } 39 | } 40 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/AccountRepository.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import org.springframework.data.mongodb.repository.ReactiveMongoRepository; 4 | 5 | public interface AccountRepository extends ReactiveMongoRepository { 6 | 7 | } 8 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/Hobby.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import com.fasterxml.jackson.annotation.JsonCreator; 4 | import com.fasterxml.jackson.annotation.JsonProperty; 5 | 6 | public class Hobby { 7 | 8 | private final Long personId; 9 | 10 | private final String hobby; 11 | 12 | @JsonCreator 13 | public Hobby(@JsonProperty("id") Long personId, @JsonProperty("hobby") String hobby) { 14 | this.personId = personId; 15 | this.hobby = hobby; 16 | } 17 | 18 | public Long getPersonId() { 19 | return personId; 20 | } 21 | 22 | public String getHobby() { 23 | return hobby; 24 | } 25 | 26 | @Override 27 | public boolean equals(Object other) { 28 | if (this == other) return true; 29 | if (other == null || getClass() != other.getClass()) return false; 30 | Hobby hobby = (Hobby) other; 31 | return personId.equals(hobby.personId); 32 | } 33 | 34 | @Override 35 | public int hashCode() { 36 | return personId.hashCode(); 37 | } 38 | 39 | @Override 40 | public String toString() { 41 | return "Hobby {personId=" + this.personId + ", hobby='" + this.hobby + "'}"; 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/MainApp.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import reactor.core.publisher.Flux; 4 | 5 | import org.springframework.boot.CommandLineRunner; 6 | import org.springframework.boot.SpringApplication; 7 | import org.springframework.boot.autoconfigure.SpringBootApplication; 8 | import org.springframework.context.annotation.Bean; 9 | 10 | @SpringBootApplication 11 | public class MainApp { 12 | 13 | 14 | public static void main(String[] args) { 15 | SpringApplication.run(MainApp.class, args); 16 | } 17 | 18 | @Bean 19 | public CommandLineRunner initData(AccountRepository repository) { 20 | return args -> { 21 | Flux accounts = Flux.just( 22 | new Account(1L, 680, 9L), // id, score, personId 23 | new Account(2L, 755, 7L), 24 | new Account(3L, 798, 2L), 25 | new Account(4L, 691, 6L), 26 | new Account(5L, 723, 8L), 27 | new Account(6L, 755, 3L), 28 | new Account(7L, 820, 1L), 29 | new Account(8L, 789, 4L), 30 | new Account(9L, 529, 10L), 31 | new Account(10L, 850, 5L)); 32 | 33 | repository.deleteAll() 34 | .thenMany(repository.saveAll(accounts)) 35 | .blockLast(); 36 | }; 37 | } 38 | 39 | } 40 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/MainController.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import java.util.LinkedHashMap; 4 | import java.util.Map; 5 | 6 | import reactor.core.publisher.Flux; 7 | import reactor.core.publisher.Mono; 8 | 9 | import org.springframework.data.domain.Sort; 10 | import org.springframework.http.MediaType; 11 | import org.springframework.web.bind.annotation.GetMapping; 12 | import org.springframework.web.bind.annotation.PathVariable; 13 | import org.springframework.web.bind.annotation.RestController; 14 | import org.springframework.web.reactive.function.client.WebClient; 15 | 16 | 17 | @RestController 18 | public class MainController { 19 | 20 | public static final Sort BY_SCORE_SORT = Sort.by(Sort.Direction.DESC, "score"); 21 | 22 | private WebClient client; 23 | 24 | private AccountRepository accountRepository; 25 | 26 | 27 | public MainController(WebClient.Builder builder, AccountRepository repository) { 28 | this.client = builder.baseUrl("http://localhost:8081").build(); 29 | this.accountRepository = repository; 30 | } 31 | 32 | 33 | @GetMapping("/persons") 34 | Flux getPersons() { 35 | return client.get().uri("/persons?delay=2").retrieve().bodyToFlux(Person.class); 36 | } 37 | 38 | @GetMapping("/person/{id}") 39 | Mono getPerson(@PathVariable Long id) { 40 | return this.client.get().uri("/person/{id}?delay=2", id).retrieve().bodyToMono(Person.class); 41 | } 42 | 43 | @GetMapping(path = "/persons/events", produces = MediaType.TEXT_EVENT_STREAM_VALUE) 44 | Flux getPersonStream() { 45 | return this.client.get().uri("/persons/events") 46 | .accept(MediaType.TEXT_EVENT_STREAM) 47 | .retrieve() 48 | .bodyToFlux(Person.class); 49 | } 50 | 51 | @GetMapping("/accounts/hobbies") 52 | Flux> getTopAccountHobbies() { 53 | return this.accountRepository.findAll(BY_SCORE_SORT) 54 | .take(5) 55 | .flatMapSequential(account -> { 56 | Long personId = account.getPersonId(); 57 | 58 | Mono nameMono = client.get().uri("/person/{id}?delay=2", personId) 59 | .retrieve() 60 | .bodyToMono(Person.class) 61 | .map(Person::getName); 62 | 63 | Mono hobbyMono = client.get().uri("/person/{id}/hobby?delay=1", personId) 64 | .retrieve() 65 | .bodyToMono(Hobby.class) 66 | .map(Hobby::getHobby); 67 | 68 | return Mono.zip(nameMono, hobbyMono, (personName, hobby) -> { 69 | Map data = new LinkedHashMap<>(); 70 | data.put("person", personName); 71 | data.put("hobby", hobby); 72 | return data; 73 | }); 74 | }); 75 | } 76 | 77 | } 78 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/Person.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import com.fasterxml.jackson.annotation.JsonCreator; 4 | import com.fasterxml.jackson.annotation.JsonProperty; 5 | 6 | public class Person { 7 | 8 | private final Long id; 9 | 10 | private final String name; 11 | 12 | @JsonCreator 13 | public Person(@JsonProperty("id") Long id, @JsonProperty("name") String name) { 14 | this.id = id; 15 | this.name = name; 16 | } 17 | 18 | public Long getId() { 19 | return id; 20 | } 21 | 22 | public String getName() { 23 | return name; 24 | } 25 | 26 | 27 | @Override 28 | public boolean equals(Object other) { 29 | if (this == other) return true; 30 | if (other == null || getClass() != other.getClass()) return false; 31 | Person person = (Person) other; 32 | return id.equals(person.id); 33 | } 34 | 35 | @Override 36 | public int hashCode() { 37 | return id.hashCode(); 38 | } 39 | 40 | @Override 41 | public String toString() { 42 | return "Person {id=" + this.id + ", name='" + this.name + "'}"; 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/client/Step1a.java: -------------------------------------------------------------------------------- 1 | package demo.client; 2 | 3 | import java.time.Duration; 4 | import java.time.Instant; 5 | 6 | import demo.Person; 7 | import org.slf4j.Logger; 8 | import org.slf4j.LoggerFactory; 9 | 10 | import org.springframework.web.client.RestTemplate; 11 | import org.springframework.web.util.DefaultUriBuilderFactory; 12 | 13 | public class Step1a { 14 | 15 | private static final Logger logger = LoggerFactory.getLogger(Step1a.class); 16 | 17 | private static RestTemplate restTemplate = new RestTemplate(); 18 | 19 | static { 20 | String baseUrl = "http://localhost:8081?delay=2"; 21 | restTemplate.setUriTemplateHandler(new DefaultUriBuilderFactory(baseUrl)); 22 | } 23 | 24 | 25 | public static void main(String[] args) { 26 | 27 | Instant start = Instant.now(); 28 | 29 | for (int i = 1; i <= 3; i++) { 30 | System.out.println("Getting id=" + i); 31 | Person person = restTemplate.getForObject("/person/{id}", Person.class, i); 32 | System.out.println("Got " + person); 33 | } 34 | 35 | logTime(start); 36 | } 37 | 38 | 39 | private static void logTime(Instant start) { 40 | logger.debug("Total: " + Duration.between(start, Instant.now()).toMillis() + " millis"); 41 | } 42 | 43 | } 44 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/client/Step2a.java: -------------------------------------------------------------------------------- 1 | package demo.client; 2 | 3 | import java.time.Duration; 4 | import java.time.Instant; 5 | 6 | import demo.Person; 7 | import org.slf4j.Logger; 8 | import org.slf4j.LoggerFactory; 9 | 10 | import org.springframework.web.reactive.function.client.WebClient; 11 | 12 | public class Step2a { 13 | 14 | private static final Logger logger = LoggerFactory.getLogger(Step2a.class); 15 | 16 | private static WebClient client = WebClient.create("http://localhost:8081?delay=2"); 17 | 18 | 19 | public static void main(String[] args) { 20 | 21 | Instant start = Instant.now(); 22 | 23 | for (int i = 1; i <= 3; i++) { 24 | System.out.println("Getting id=" + i); 25 | client.get().uri("/person/{id}", i).retrieve().bodyToMono(Person.class); 26 | } 27 | 28 | logTime(start); 29 | } 30 | 31 | 32 | private static void logTime(Instant start) { 33 | logger.debug("Total: " + Duration.between(start, Instant.now()).toMillis() + " millis"); 34 | } 35 | 36 | } 37 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/client/Step2b.java: -------------------------------------------------------------------------------- 1 | package demo.client; 2 | 3 | import java.time.Duration; 4 | import java.time.Instant; 5 | import java.util.ArrayList; 6 | import java.util.List; 7 | import java.util.stream.Collectors; 8 | import java.util.stream.Stream; 9 | 10 | import demo.Person; 11 | import org.slf4j.Logger; 12 | import org.slf4j.LoggerFactory; 13 | import reactor.core.publisher.Mono; 14 | 15 | import org.springframework.web.reactive.function.client.WebClient; 16 | 17 | public class Step2b { 18 | 19 | private static final Logger logger = LoggerFactory.getLogger(Step2b.class); 20 | 21 | private static WebClient client = WebClient.create("http://localhost:8081?delay=2"); 22 | 23 | // TODO: Also try logging (for correlated messages).. 24 | 25 | 26 | public static void main(String[] args) { 27 | 28 | Instant start = Instant.now(); 29 | 30 | List> list = new ArrayList<>(); 31 | for (int i = 1; i <= 3; i++) { 32 | System.out.println("Getting " + i); 33 | list.add(client.get().uri("/person/{id}", i) 34 | .retrieve() 35 | .bodyToMono(Person.class) 36 | .doOnNext(person -> System.out.println("Got " + person))); 37 | } 38 | Mono.when(list).block(); 39 | 40 | logTime(start); 41 | } 42 | 43 | 44 | private static void logTime(Instant start) { 45 | logger.debug("Total: " + Duration.between(start, Instant.now()).toMillis() + " millis"); 46 | } 47 | 48 | } 49 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/client/Step2c.java: -------------------------------------------------------------------------------- 1 | package demo.client; 2 | 3 | import java.time.Duration; 4 | import java.time.Instant; 5 | 6 | import demo.Person; 7 | import org.slf4j.Logger; 8 | import org.slf4j.LoggerFactory; 9 | import reactor.core.publisher.Flux; 10 | 11 | import org.springframework.web.reactive.function.client.WebClient; 12 | 13 | public class Step2c { 14 | 15 | private static final Logger logger = LoggerFactory.getLogger(Step2c.class); 16 | 17 | private static WebClient client = WebClient.create("http://localhost:8081?delay=2"); 18 | 19 | 20 | public static void main(String[] args) { 21 | 22 | Instant start = Instant.now(); 23 | 24 | Flux.range(1, 3) 25 | .doOnNext(i -> System.out.println("Getting id=" + i)) 26 | .flatMap(i -> client.get().uri("/person/{id}", i).retrieve().bodyToMono(Person.class)) 27 | .doOnNext(person -> System.out.println("Got " + person)) 28 | .blockLast(); 29 | 30 | logTime(start); 31 | } 32 | 33 | 34 | private static void logTime(Instant start) { 35 | logger.debug("Total: " + Duration.between(start, Instant.now()).toMillis() + " millis"); 36 | } 37 | 38 | } 39 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/client/Step2d.java: -------------------------------------------------------------------------------- 1 | package demo.client; 2 | 3 | import java.time.Duration; 4 | import java.time.Instant; 5 | 6 | import demo.Person; 7 | import org.slf4j.Logger; 8 | import org.slf4j.LoggerFactory; 9 | import reactor.core.publisher.Flux; 10 | 11 | import org.springframework.http.HttpHeaders; 12 | import org.springframework.http.HttpStatus; 13 | import org.springframework.web.reactive.function.client.WebClient; 14 | 15 | public class Step2d { 16 | 17 | private static final Logger logger = LoggerFactory.getLogger(Step2d.class); 18 | 19 | private static WebClient client = WebClient.create("http://localhost:8081?delay=2"); 20 | 21 | 22 | public static void main(String[] args) { 23 | 24 | Instant start = Instant.now(); 25 | 26 | Flux.range(1, 3) 27 | .doOnNext(i -> System.out.println("Getting id=" + i)) 28 | .flatMap(i -> client.get().uri("/person/{id}", i).exchange()) 29 | .flatMap(response -> { 30 | HttpStatus status = response.statusCode(); 31 | HttpHeaders headers = response.headers().asHttpHeaders(); 32 | System.out.println(status + " " + headers); 33 | return response.bodyToMono(Person.class); 34 | }) 35 | .doOnNext(person -> System.out.println("Got " + person)) 36 | .blockLast(); 37 | 38 | logTime(start); 39 | } 40 | 41 | 42 | private static void logTime(Instant start) { 43 | logger.debug("Elapsed time: " + Duration.between(start, Instant.now()).toMillis() + "ms"); 44 | } 45 | 46 | } 47 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/client/Step2e.java: -------------------------------------------------------------------------------- 1 | package demo.client; 2 | 3 | import java.time.Duration; 4 | import java.time.Instant; 5 | 6 | import demo.Hobby; 7 | import demo.Person; 8 | import org.slf4j.Logger; 9 | import org.slf4j.LoggerFactory; 10 | import reactor.core.publisher.Flux; 11 | 12 | import org.springframework.web.reactive.function.client.WebClient; 13 | 14 | public class Step2e { 15 | 16 | private static final Logger logger = LoggerFactory.getLogger(Step2e.class); 17 | 18 | private static WebClient client = WebClient.create("http://localhost:8081?delay=2"); 19 | 20 | 21 | public static void main(String[] args) { 22 | 23 | Instant start = Instant.now(); 24 | 25 | Flux.range(1, 3) 26 | .doOnNext(i -> System.out.println("Getting id=" + i)) 27 | .flatMap(i -> 28 | client.get().uri("/person/{id}", i) 29 | .retrieve() 30 | .bodyToMono(Person.class)) 31 | .doOnNext(i -> System.out.println("Getting hobbies for id=" + i)) 32 | .flatMap(person -> 33 | client.get().uri("/person/{id}/hobby", person.getId()) 34 | .retrieve() 35 | .bodyToMono(Hobby.class)) 36 | .doOnNext(hobby -> System.out.println("Got " + hobby)) 37 | .blockLast(); 38 | 39 | logTime(start); 40 | } 41 | 42 | 43 | private static void logTime(Instant start) { 44 | logger.debug("Total: " + Duration.between(start, Instant.now()).toMillis() + " millis"); 45 | } 46 | 47 | } 48 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/client/Step3a.java: -------------------------------------------------------------------------------- 1 | package demo.client; 2 | 3 | import demo.Person; 4 | 5 | import org.springframework.web.reactive.function.client.WebClient; 6 | 7 | public class Step3a { 8 | 9 | private static WebClient client = WebClient.create("http://localhost:8081"); 10 | 11 | 12 | public static void main(String[] args) { 13 | 14 | client.get().uri("/persons/events") 15 | .retrieve() 16 | .bodyToFlux(Person.class) 17 | .doOnNext(person -> System.out.println("Got " + person)) 18 | .take(4) 19 | .blockLast(); 20 | } 21 | 22 | } 23 | -------------------------------------------------------------------------------- /main-app/src/main/java/demo/client/package-info.java: -------------------------------------------------------------------------------- 1 | /** 2 | *
    3 | *
  • [1a] RestTemplate sync, sequential calls 4 | *
  • [2a] WebClient deferred nature. Need to subscribe (consume, collect, block) 5 | *
  • [2b] Compose on completion of multiple requests 6 | *
  • [2c] Singe chain. Try also concatMap, .then().block(), .then(Publisher), etc. 7 | *
  • [2d] Retrieve vs exchange (consume body, ResponseEntity), builder options 8 | *
  • [2e] Inter-dependant, nested calls 9 | *
  • [3a] Streaming, lifecycle 10 | *
11 | */ 12 | package demo.client; -------------------------------------------------------------------------------- /main-app/src/main/resources/application.properties: -------------------------------------------------------------------------------- 1 | logging.level.demo=DEBUG 2 | logging.level.org.springframework.web=TRACE 3 | spring.http.log-request-details=true -------------------------------------------------------------------------------- /main-app/src/main/resources/logback.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | %d{HH:mm:ss} [%thread] %logger{0} - %msg%n 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | -------------------------------------------------------------------------------- /main-app/src/test/java/demo/MainAppTests.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import org.junit.Test; 4 | import org.junit.runner.RunWith; 5 | import reactor.core.publisher.Flux; 6 | import reactor.test.StepVerifier; 7 | 8 | import org.springframework.beans.factory.annotation.Autowired; 9 | import org.springframework.boot.test.context.SpringBootTest; 10 | import org.springframework.http.MediaType; 11 | import org.springframework.test.context.junit4.SpringRunner; 12 | import org.springframework.test.web.reactive.server.WebTestClient; 13 | 14 | // Before running the tests: 15 | // Make sure RemoteServices app is running!! 16 | 17 | @RunWith(SpringRunner.class) 18 | @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) 19 | public class MainAppTests { 20 | 21 | @Autowired 22 | WebTestClient client; 23 | 24 | @Test 25 | public void person() { 26 | this.client.get().uri("/person/1") 27 | .exchange() 28 | .expectStatus().isOk() 29 | .expectHeader().contentType(MediaType.APPLICATION_JSON_UTF8) 30 | .expectBody(Person.class).isEqualTo(new Person(1L, "Amanda")); 31 | } 32 | 33 | @Test 34 | public void persons() { 35 | this.client.get().uri("/persons") 36 | .exchange() 37 | .expectStatus().isOk() 38 | .expectHeader().contentType(MediaType.APPLICATION_JSON_UTF8) 39 | .expectBody() 40 | .jsonPath("$.length()").isEqualTo(10) 41 | .jsonPath("$[0].name").isEqualTo("Amanda") 42 | .jsonPath("$[1].name").isEqualTo("Brittany") 43 | .jsonPath("$[2].name").isEqualTo("Christopher") 44 | .jsonPath("$[3].name").isEqualTo("Elizabeth") 45 | .jsonPath("$[4].name").isEqualTo("Hannah") 46 | .jsonPath("$[5].name").isEqualTo("Joshua") 47 | .jsonPath("$[6].name").isEqualTo("Kayla") 48 | .jsonPath("$[7].name").isEqualTo("Lauren") 49 | .jsonPath("$[8].name").isEqualTo("Matthew") 50 | .jsonPath("$[9].name").isEqualTo("Megan"); 51 | } 52 | 53 | @Test 54 | public void personsEvents() { 55 | 56 | Flux body = this.client.get().uri("/persons/events") 57 | .exchange() 58 | .expectStatus().isOk() 59 | .expectHeader().contentType("text/event-stream;charset=UTF-8") 60 | .returnResult(Person.class) 61 | .getResponseBody() 62 | .take(3); 63 | 64 | StepVerifier.create(body) 65 | .expectNext(new Person(1L, "Amanda")) 66 | .expectNext(new Person(2L, "Brittany")) 67 | .expectNext(new Person(3L, "Christopher")) 68 | .verifyComplete(); 69 | } 70 | 71 | @Test 72 | public void hobby() { 73 | this.client.get().uri("/accounts/hobbies") 74 | .exchange() 75 | .expectStatus().isOk() 76 | .expectHeader().contentType(MediaType.APPLICATION_JSON_UTF8) 77 | .expectBody() 78 | .jsonPath("$.length()").isEqualTo(5) 79 | .jsonPath("$[0].person").isEqualTo("Hannah") 80 | .jsonPath("$[0].hobby").isEqualTo("Skiing") 81 | .jsonPath("$[4].person").isEqualTo("Kayla") 82 | .jsonPath("$[4].hobby").isEqualTo("Scuba Diving"); 83 | } 84 | } 85 | -------------------------------------------------------------------------------- /mvnw: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | # ---------------------------------------------------------------------------- 3 | # Licensed to the Apache Software Foundation (ASF) under one 4 | # or more contributor license agreements. See the NOTICE file 5 | # distributed with this work for additional information 6 | # regarding copyright ownership. The ASF licenses this file 7 | # to you under the Apache License, Version 2.0 (the 8 | # "License"); you may not use this file except in compliance 9 | # with the License. You may obtain a copy of the License at 10 | # 11 | # http://www.apache.org/licenses/LICENSE-2.0 12 | # 13 | # Unless required by applicable law or agreed to in writing, 14 | # software distributed under the License is distributed on an 15 | # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 | # KIND, either express or implied. See the License for the 17 | # specific language governing permissions and limitations 18 | # under the License. 19 | # ---------------------------------------------------------------------------- 20 | 21 | # ---------------------------------------------------------------------------- 22 | # Maven2 Start Up Batch script 23 | # 24 | # Required ENV vars: 25 | # ------------------ 26 | # JAVA_HOME - location of a JDK home dir 27 | # 28 | # Optional ENV vars 29 | # ----------------- 30 | # M2_HOME - location of maven2's installed home dir 31 | # MAVEN_OPTS - parameters passed to the Java VM when running Maven 32 | # e.g. to debug Maven itself, use 33 | # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 34 | # MAVEN_SKIP_RC - flag to disable loading of mavenrc files 35 | # ---------------------------------------------------------------------------- 36 | 37 | if [ -z "$MAVEN_SKIP_RC" ] ; then 38 | 39 | if [ -f /etc/mavenrc ] ; then 40 | . /etc/mavenrc 41 | fi 42 | 43 | if [ -f "$HOME/.mavenrc" ] ; then 44 | . "$HOME/.mavenrc" 45 | fi 46 | 47 | fi 48 | 49 | # OS specific support. $var _must_ be set to either true or false. 50 | cygwin=false; 51 | darwin=false; 52 | mingw=false 53 | case "`uname`" in 54 | CYGWIN*) cygwin=true ;; 55 | MINGW*) mingw=true;; 56 | Darwin*) darwin=true 57 | # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home 58 | # See https://developer.apple.com/library/mac/qa/qa1170/_index.html 59 | if [ -z "$JAVA_HOME" ]; then 60 | if [ -x "/usr/libexec/java_home" ]; then 61 | export JAVA_HOME="`/usr/libexec/java_home`" 62 | else 63 | export JAVA_HOME="/Library/Java/Home" 64 | fi 65 | fi 66 | ;; 67 | esac 68 | 69 | if [ -z "$JAVA_HOME" ] ; then 70 | if [ -r /etc/gentoo-release ] ; then 71 | JAVA_HOME=`java-config --jre-home` 72 | fi 73 | fi 74 | 75 | if [ -z "$M2_HOME" ] ; then 76 | ## resolve links - $0 may be a link to maven's home 77 | PRG="$0" 78 | 79 | # need this for relative symlinks 80 | while [ -h "$PRG" ] ; do 81 | ls=`ls -ld "$PRG"` 82 | link=`expr "$ls" : '.*-> \(.*\)$'` 83 | if expr "$link" : '/.*' > /dev/null; then 84 | PRG="$link" 85 | else 86 | PRG="`dirname "$PRG"`/$link" 87 | fi 88 | done 89 | 90 | saveddir=`pwd` 91 | 92 | M2_HOME=`dirname "$PRG"`/.. 93 | 94 | # make it fully qualified 95 | M2_HOME=`cd "$M2_HOME" && pwd` 96 | 97 | cd "$saveddir" 98 | # echo Using m2 at $M2_HOME 99 | fi 100 | 101 | # For Cygwin, ensure paths are in UNIX format before anything is touched 102 | if $cygwin ; then 103 | [ -n "$M2_HOME" ] && 104 | M2_HOME=`cygpath --unix "$M2_HOME"` 105 | [ -n "$JAVA_HOME" ] && 106 | JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 107 | [ -n "$CLASSPATH" ] && 108 | CLASSPATH=`cygpath --path --unix "$CLASSPATH"` 109 | fi 110 | 111 | # For Migwn, ensure paths are in UNIX format before anything is touched 112 | if $mingw ; then 113 | [ -n "$M2_HOME" ] && 114 | M2_HOME="`(cd "$M2_HOME"; pwd)`" 115 | [ -n "$JAVA_HOME" ] && 116 | JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" 117 | # TODO classpath? 118 | fi 119 | 120 | if [ -z "$JAVA_HOME" ]; then 121 | javaExecutable="`which javac`" 122 | if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then 123 | # readlink(1) is not available as standard on Solaris 10. 124 | readLink=`which readlink` 125 | if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then 126 | if $darwin ; then 127 | javaHome="`dirname \"$javaExecutable\"`" 128 | javaExecutable="`cd \"$javaHome\" && pwd -P`/javac" 129 | else 130 | javaExecutable="`readlink -f \"$javaExecutable\"`" 131 | fi 132 | javaHome="`dirname \"$javaExecutable\"`" 133 | javaHome=`expr "$javaHome" : '\(.*\)/bin'` 134 | JAVA_HOME="$javaHome" 135 | export JAVA_HOME 136 | fi 137 | fi 138 | fi 139 | 140 | if [ -z "$JAVACMD" ] ; then 141 | if [ -n "$JAVA_HOME" ] ; then 142 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 143 | # IBM's JDK on AIX uses strange locations for the executables 144 | JAVACMD="$JAVA_HOME/jre/sh/java" 145 | else 146 | JAVACMD="$JAVA_HOME/bin/java" 147 | fi 148 | else 149 | JAVACMD="`which java`" 150 | fi 151 | fi 152 | 153 | if [ ! -x "$JAVACMD" ] ; then 154 | echo "Error: JAVA_HOME is not defined correctly." >&2 155 | echo " We cannot execute $JAVACMD" >&2 156 | exit 1 157 | fi 158 | 159 | if [ -z "$JAVA_HOME" ] ; then 160 | echo "Warning: JAVA_HOME environment variable is not set." 161 | fi 162 | 163 | CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher 164 | 165 | # traverses directory structure from process work directory to filesystem root 166 | # first directory with .mvn subdirectory is considered project base directory 167 | find_maven_basedir() { 168 | 169 | if [ -z "$1" ] 170 | then 171 | echo "Path not specified to find_maven_basedir" 172 | return 1 173 | fi 174 | 175 | basedir="$1" 176 | wdir="$1" 177 | while [ "$wdir" != '/' ] ; do 178 | if [ -d "$wdir"/.mvn ] ; then 179 | basedir=$wdir 180 | break 181 | fi 182 | # workaround for JBEAP-8937 (on Solaris 10/Sparc) 183 | if [ -d "${wdir}" ]; then 184 | wdir=`cd "$wdir/.."; pwd` 185 | fi 186 | # end of workaround 187 | done 188 | echo "${basedir}" 189 | } 190 | 191 | # concatenates all lines of a file 192 | concat_lines() { 193 | if [ -f "$1" ]; then 194 | echo "$(tr -s '\n' ' ' < "$1")" 195 | fi 196 | } 197 | 198 | BASE_DIR=`find_maven_basedir "$(pwd)"` 199 | if [ -z "$BASE_DIR" ]; then 200 | exit 1; 201 | fi 202 | 203 | export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"} 204 | echo $MAVEN_PROJECTBASEDIR 205 | MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS" 206 | 207 | # For Cygwin, switch paths to Windows format before running java 208 | if $cygwin; then 209 | [ -n "$M2_HOME" ] && 210 | M2_HOME=`cygpath --path --windows "$M2_HOME"` 211 | [ -n "$JAVA_HOME" ] && 212 | JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` 213 | [ -n "$CLASSPATH" ] && 214 | CLASSPATH=`cygpath --path --windows "$CLASSPATH"` 215 | [ -n "$MAVEN_PROJECTBASEDIR" ] && 216 | MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"` 217 | fi 218 | 219 | WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 220 | 221 | exec "$JAVACMD" \ 222 | $MAVEN_OPTS \ 223 | -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \ 224 | "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \ 225 | ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@" 226 | -------------------------------------------------------------------------------- /mvnw.cmd: -------------------------------------------------------------------------------- 1 | @REM ---------------------------------------------------------------------------- 2 | @REM Licensed to the Apache Software Foundation (ASF) under one 3 | @REM or more contributor license agreements. See the NOTICE file 4 | @REM distributed with this work for additional information 5 | @REM regarding copyright ownership. The ASF licenses this file 6 | @REM to you under the Apache License, Version 2.0 (the 7 | @REM "License"); you may not use this file except in compliance 8 | @REM with the License. You may obtain a copy of the License at 9 | @REM 10 | @REM http://www.apache.org/licenses/LICENSE-2.0 11 | @REM 12 | @REM Unless required by applicable law or agreed to in writing, 13 | @REM software distributed under the License is distributed on an 14 | @REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 | @REM KIND, either express or implied. See the License for the 16 | @REM specific language governing permissions and limitations 17 | @REM under the License. 18 | @REM ---------------------------------------------------------------------------- 19 | 20 | @REM ---------------------------------------------------------------------------- 21 | @REM Maven2 Start Up Batch script 22 | @REM 23 | @REM Required ENV vars: 24 | @REM JAVA_HOME - location of a JDK home dir 25 | @REM 26 | @REM Optional ENV vars 27 | @REM M2_HOME - location of maven2's installed home dir 28 | @REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands 29 | @REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending 30 | @REM MAVEN_OPTS - parameters passed to the Java VM when running Maven 31 | @REM e.g. to debug Maven itself, use 32 | @REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 33 | @REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files 34 | @REM ---------------------------------------------------------------------------- 35 | 36 | @REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on' 37 | @echo off 38 | @REM enable echoing my setting MAVEN_BATCH_ECHO to 'on' 39 | @if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO% 40 | 41 | @REM set %HOME% to equivalent of $HOME 42 | if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%") 43 | 44 | @REM Execute a user defined script before this one 45 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre 46 | @REM check for pre script, once with legacy .bat ending and once with .cmd ending 47 | if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat" 48 | if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd" 49 | :skipRcPre 50 | 51 | @setlocal 52 | 53 | set ERROR_CODE=0 54 | 55 | @REM To isolate internal variables from possible post scripts, we use another setlocal 56 | @setlocal 57 | 58 | @REM ==== START VALIDATION ==== 59 | if not "%JAVA_HOME%" == "" goto OkJHome 60 | 61 | echo. 62 | echo Error: JAVA_HOME not found in your environment. >&2 63 | echo Please set the JAVA_HOME variable in your environment to match the >&2 64 | echo location of your Java installation. >&2 65 | echo. 66 | goto error 67 | 68 | :OkJHome 69 | if exist "%JAVA_HOME%\bin\java.exe" goto init 70 | 71 | echo. 72 | echo Error: JAVA_HOME is set to an invalid directory. >&2 73 | echo JAVA_HOME = "%JAVA_HOME%" >&2 74 | echo Please set the JAVA_HOME variable in your environment to match the >&2 75 | echo location of your Java installation. >&2 76 | echo. 77 | goto error 78 | 79 | @REM ==== END VALIDATION ==== 80 | 81 | :init 82 | 83 | @REM Find the project base dir, i.e. the directory that contains the folder ".mvn". 84 | @REM Fallback to current working directory if not found. 85 | 86 | set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR% 87 | IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir 88 | 89 | set EXEC_DIR=%CD% 90 | set WDIR=%EXEC_DIR% 91 | :findBaseDir 92 | IF EXIST "%WDIR%"\.mvn goto baseDirFound 93 | cd .. 94 | IF "%WDIR%"=="%CD%" goto baseDirNotFound 95 | set WDIR=%CD% 96 | goto findBaseDir 97 | 98 | :baseDirFound 99 | set MAVEN_PROJECTBASEDIR=%WDIR% 100 | cd "%EXEC_DIR%" 101 | goto endDetectBaseDir 102 | 103 | :baseDirNotFound 104 | set MAVEN_PROJECTBASEDIR=%EXEC_DIR% 105 | cd "%EXEC_DIR%" 106 | 107 | :endDetectBaseDir 108 | 109 | IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig 110 | 111 | @setlocal EnableExtensions EnableDelayedExpansion 112 | for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a 113 | @endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS% 114 | 115 | :endReadAdditionalConfig 116 | 117 | SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe" 118 | 119 | set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar" 120 | set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 121 | 122 | %MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %* 123 | if ERRORLEVEL 1 goto error 124 | goto end 125 | 126 | :error 127 | set ERROR_CODE=1 128 | 129 | :end 130 | @endlocal & set ERROR_CODE=%ERROR_CODE% 131 | 132 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost 133 | @REM check for post script, once with legacy .bat ending and once with .cmd ending 134 | if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat" 135 | if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd" 136 | :skipRcPost 137 | 138 | @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on' 139 | if "%MAVEN_BATCH_PAUSE%" == "on" pause 140 | 141 | if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE% 142 | 143 | exit /B %ERROR_CODE% 144 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | 6 | 7 | org.springframework.boot 8 | spring-boot-starter-parent 9 | 2.1.5.RELEASE 10 | 11 | 12 | 13 | demo 14 | reactive-for-webmvc 15 | 0.0.1.BUILD-SNAPSHOT 16 | jar 17 | 18 | Reactive Guide for Spring MVC 19 | Demo fromtalk on reactive programming for existing applications 20 | 21 | 22 | UTF-8 23 | UTF-8 24 | 1.8 25 | 26 | 27 | 28 | main-app 29 | remote-services 30 | 31 | 32 | 33 | 34 | org.springframework.boot 35 | spring-boot-devtools 36 | 37 | 38 | org.springframework.boot 39 | spring-boot-starter-test 40 | test 41 | 42 | 43 | io.projectreactor 44 | reactor-test 45 | test 46 | 47 | 48 | 49 | 50 | 51 | 52 | org.springframework.boot 53 | spring-boot-maven-plugin 54 | 55 | 56 | 57 | 58 | 59 | 60 | spring-libs-snapshot 61 | Spring Snapshots 62 | https://repo.spring.io/libs-snapshot 63 | 64 | 65 | 66 | 67 | spring-libs-snapshot 68 | Spring Snapshots 69 | https://repo.spring.io/libs-snapshot 70 | 71 | 72 | 73 | 74 | -------------------------------------------------------------------------------- /remote-services/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | 6 | 7 | demo 8 | reactive-for-webmvc 9 | 0.0.1.BUILD-SNAPSHOT 10 | 11 | 12 | remote-services 13 | 0.0.1-SNAPSHOT 14 | jar 15 | 16 | Remote Services 17 | Remote services for the main application to use 18 | 19 | 20 | 21 | org.springframework.boot 22 | spring-boot-starter-webflux 23 | 24 | 25 | 26 | 27 | -------------------------------------------------------------------------------- /remote-services/src/main/java/demo/RemoteServiceApp.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import java.time.Duration; 4 | import java.util.HashMap; 5 | import java.util.LinkedHashMap; 6 | import java.util.Map; 7 | 8 | import reactor.core.publisher.Flux; 9 | import reactor.core.publisher.Mono; 10 | 11 | import org.springframework.boot.SpringApplication; 12 | import org.springframework.boot.autoconfigure.SpringBootApplication; 13 | import org.springframework.context.annotation.Bean; 14 | import org.springframework.http.codec.ServerSentEvent; 15 | import org.springframework.web.reactive.function.server.HandlerFilterFunction; 16 | import org.springframework.web.reactive.function.server.HandlerFunction; 17 | import org.springframework.web.reactive.function.server.RouterFunction; 18 | import org.springframework.web.reactive.function.server.RouterFunctions; 19 | import org.springframework.web.reactive.function.server.ServerRequest; 20 | import org.springframework.web.reactive.function.server.ServerResponse; 21 | 22 | import static org.springframework.web.reactive.function.BodyInserters.*; 23 | 24 | @SpringBootApplication 25 | public class RemoteServiceApp { 26 | 27 | 28 | public static void main(String[] args) { 29 | SpringApplication.run(RemoteServiceApp.class, args); 30 | } 31 | 32 | 33 | @Bean 34 | public RouterFunction routes() { 35 | PersonHandler handler = new PersonHandler(); 36 | return RouterFunctions.route() 37 | .GET("/persons", handler::getPersons) 38 | .GET("/person/{id}", handler::getPerson) 39 | .GET("/person/{id}/hobby", handler::getPersonHobbies) 40 | .GET("/persons/events", handler::getPersonEvents) 41 | .filter(new DelayFilter()) 42 | .build(); 43 | } 44 | 45 | 46 | private static class PersonHandler { 47 | 48 | private static final Mono NOT_FOUND = ServerResponse.notFound().build(); 49 | 50 | 51 | Mono getPersons(ServerRequest request) { 52 | return ServerResponse.ok().syncBody(PERSON_DATA.values()); 53 | } 54 | 55 | Mono getPerson(ServerRequest request) { 56 | Long personId = Long.parseLong(request.pathVariable("id")); 57 | Map body = PERSON_DATA.get(personId); 58 | return body != null ? ServerResponse.ok().syncBody(body) : NOT_FOUND; 59 | } 60 | 61 | Mono getPersonHobbies(ServerRequest request) { 62 | Long personId = Long.parseLong(request.pathVariable("id")); 63 | Map body = HOBBY_DATA.get(personId); 64 | return body != null ? ServerResponse.ok().syncBody(body) : NOT_FOUND; 65 | } 66 | 67 | Mono getPersonEvents(ServerRequest request) { 68 | return ServerResponse.ok().body(fromServerSentEvents( 69 | Flux.interval(Duration.ofSeconds(2)) 70 | .map(i -> PERSON_DATA.get((i % 10) + 1)) 71 | .map(data -> ServerSentEvent.builder(data).build()))); 72 | } 73 | 74 | 75 | private static final Map> PERSON_DATA; 76 | 77 | static { 78 | PERSON_DATA = new HashMap<>(); 79 | addPerson(1L, "Amanda"); 80 | addPerson(2L, "Brittany"); 81 | addPerson(3L, "Christopher"); 82 | addPerson(4L, "Elizabeth"); 83 | addPerson(5L, "Hannah"); 84 | addPerson(6L, "Joshua"); 85 | addPerson(7L, "Kayla"); 86 | addPerson(8L, "Lauren"); 87 | addPerson(9L, "Matthew"); 88 | addPerson(10L, "Megan"); 89 | } 90 | 91 | private static void addPerson(Long id, String name) { 92 | Map map = new LinkedHashMap<>(); 93 | map.put("id", id); 94 | map.put("name", name); 95 | PERSON_DATA.put(id, map); 96 | } 97 | 98 | 99 | private static final Map> HOBBY_DATA; 100 | 101 | static { 102 | HOBBY_DATA = new HashMap<>(); 103 | addHobby(1L, "Travel"); 104 | addHobby(2L, "Coffee Roasting"); 105 | addHobby(3L, "Puzzles"); 106 | addHobby(4L, "3D Printing"); 107 | addHobby(5L, "Skiing"); 108 | addHobby(6L, "Yoga"); 109 | addHobby(7L, "Scuba Diving"); 110 | addHobby(8L, "Shopping"); 111 | addHobby(9L, "Tai Chi"); 112 | addHobby(10L, "Kombucha brewing"); 113 | } 114 | 115 | private static void addHobby(Long personId, String hobby) { 116 | Map map = new LinkedHashMap<>(); 117 | map.put("personId", personId); 118 | map.put("hobby", hobby); 119 | HOBBY_DATA.put(personId, map); 120 | } 121 | } 122 | 123 | 124 | private static class DelayFilter implements HandlerFilterFunction { 125 | 126 | @Override 127 | public Mono filter(ServerRequest request, HandlerFunction next) { 128 | Duration delay = request.queryParam("delay") 129 | .map(rawValue -> Duration.ofSeconds(Long.parseLong(rawValue))) 130 | .orElse(Duration.ZERO); 131 | return delay.isZero() ? 132 | next.handle(request) : 133 | Mono.delay(delay).flatMap(aLong -> next.handle(request)); 134 | } 135 | } 136 | 137 | 138 | } 139 | -------------------------------------------------------------------------------- /remote-services/src/main/resources/application.properties: -------------------------------------------------------------------------------- 1 | server.port=8081 2 | logging.level.demo=DEBUG 3 | logging.level.org.springframework.web=DEBUG 4 | -------------------------------------------------------------------------------- /remote-services/src/test/java/demo/RemoteServicesTests.java: -------------------------------------------------------------------------------- 1 | package demo; 2 | 3 | import java.util.LinkedHashMap; 4 | import java.util.Map; 5 | 6 | import org.junit.Test; 7 | import org.junit.runner.RunWith; 8 | import reactor.core.publisher.Flux; 9 | import reactor.test.StepVerifier; 10 | 11 | import org.springframework.beans.factory.annotation.Autowired; 12 | import org.springframework.boot.test.autoconfigure.web.reactive.AutoConfigureWebTestClient; 13 | import org.springframework.boot.test.context.SpringBootTest; 14 | import org.springframework.core.ParameterizedTypeReference; 15 | import org.springframework.http.MediaType; 16 | import org.springframework.test.context.junit4.SpringRunner; 17 | import org.springframework.test.web.reactive.server.WebTestClient; 18 | 19 | import static org.junit.Assert.*; 20 | 21 | @RunWith(SpringRunner.class) 22 | @SpringBootTest 23 | @AutoConfigureWebTestClient 24 | public class RemoteServicesTests { 25 | 26 | private static final ParameterizedTypeReference> MAP_TYPE = 27 | new ParameterizedTypeReference>() {}; 28 | 29 | 30 | @Autowired 31 | WebTestClient client; 32 | 33 | @Test 34 | public void person() { 35 | 36 | Map expected = new LinkedHashMap<>(); 37 | expected.put("id", 1); 38 | expected.put("name", "Amanda"); 39 | 40 | this.client.get().uri("/person/1") 41 | .exchange() 42 | .expectStatus().isOk() 43 | .expectHeader().contentType(MediaType.APPLICATION_JSON_UTF8) 44 | .expectBody(MAP_TYPE).isEqualTo(expected); 45 | } 46 | 47 | @Test 48 | public void persons() { 49 | 50 | this.client.get().uri("/persons") 51 | .exchange() 52 | .expectStatus().isOk() 53 | .expectHeader().contentType(MediaType.APPLICATION_JSON_UTF8) 54 | .expectBody() 55 | .jsonPath("$.length()").isEqualTo(10) 56 | .jsonPath("$[0].name").isEqualTo("Amanda") 57 | .jsonPath("$[1].name").isEqualTo("Brittany") 58 | .jsonPath("$[2].name").isEqualTo("Christopher") 59 | .jsonPath("$[3].name").isEqualTo("Elizabeth") 60 | .jsonPath("$[4].name").isEqualTo("Hannah") 61 | .jsonPath("$[5].name").isEqualTo("Joshua") 62 | .jsonPath("$[6].name").isEqualTo("Kayla") 63 | .jsonPath("$[7].name").isEqualTo("Lauren") 64 | .jsonPath("$[8].name").isEqualTo("Matthew") 65 | .jsonPath("$[9].name").isEqualTo("Megan"); 66 | } 67 | 68 | @Test 69 | public void personsEvents() { 70 | 71 | Flux> body = this.client.get().uri("/persons/events") 72 | .exchange() 73 | .expectStatus().isOk() 74 | .expectHeader().contentType("text/event-stream;charset=UTF-8") 75 | .returnResult(MAP_TYPE) 76 | .getResponseBody() 77 | .take(3); 78 | 79 | StepVerifier.create(body) 80 | .consumeNextWith(map -> assertEquals("Amanda", map.get("name"))) 81 | .consumeNextWith(map -> assertEquals("Brittany", map.get("name"))) 82 | .consumeNextWith(map -> assertEquals("Christopher", map.get("name"))) 83 | .verifyComplete(); 84 | } 85 | 86 | @Test 87 | public void hobby() { 88 | 89 | Map expected = new LinkedHashMap<>(); 90 | expected.put("personId", 1); 91 | expected.put("hobby", "Travel"); 92 | 93 | this.client.get().uri("/person/1/hobby") 94 | .exchange() 95 | .expectStatus().isOk() 96 | .expectHeader().contentType(MediaType.APPLICATION_JSON_UTF8) 97 | .expectBody(MAP_TYPE).isEqualTo(expected); 98 | } 99 | 100 | } 101 | --------------------------------------------------------------------------------