/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.reactive.function.server;
import java.time.Duration;
import org.junit.Before;
import org.junit.Test;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.test.StepVerifier;
import org.springframework.http.codec.ServerSentEvent;
import org.springframework.web.reactive.function.client.WebClient;
import static org.junit.Assert.*;
import static org.springframework.core.ResolvableType.*;
import static org.springframework.http.MediaType.*;
import static org.springframework.web.reactive.function.BodyExtractors.*;
import static org.springframework.web.reactive.function.BodyInserters.*;
import static org.springframework.web.reactive.function.server.RouterFunctions.*;
/**
* @author Arjen Poutsma
*/
public class SseHandlerFunctionIntegrationTests extends AbstractRouterFunctionIntegrationTests {
private WebClient webClient;
@Override
protected RouterFunction<?> routerFunction() {
SseHandler sseHandler = new SseHandler();
return route(RequestPredicates.GET("/string"), sseHandler::string)
.and(route(RequestPredicates.GET("/person"), sseHandler::person))
.and(route(RequestPredicates.GET("/event"), sseHandler::sse));
}
@Before
public void setup() throws Exception {
super.setup();
this.webClient = WebClient.create("http://localhost:" + this.port);
}
@Test
public void sseAsString() throws Exception {
Flux<String> result = this.webClient.get()
.uri("/string")
.accept(TEXT_EVENT_STREAM)
.exchange()
.flatMapMany(response -> response.body(toFlux(String.class)));
StepVerifier.create(result)
.expectNext("foo 0")
.expectNext("foo 1")
.expectComplete()
.verify(Duration.ofSeconds(5L));
}
@Test
public void sseAsPerson() throws Exception {
Flux<Person> result = this.webClient.get()
.uri("/person")
.accept(TEXT_EVENT_STREAM)
.exchange()
.flatMapMany(response -> response.body(toFlux(Person.class)));
StepVerifier.create(result)
.expectNext(new Person("foo 0"))
.expectNext(new Person("foo 1"))
.expectComplete()
.verify(Duration.ofSeconds(5L));
}
@Test
public void sseAsEvent() throws Exception {
Flux<ServerSentEvent<String>> result = this.webClient.get()
.uri("/event")
.accept(TEXT_EVENT_STREAM)
.exchange()
.flatMapMany(response -> response.body(toFlux(
forClassWithGenerics(ServerSentEvent.class, String.class))));
StepVerifier.create(result)
.consumeNextWith( event -> {
assertEquals("0", event.id().get());
assertEquals("foo", event.data().get());
assertEquals("bar", event.comment().get());
assertFalse(event.event().isPresent());
assertFalse(event.retry().isPresent());
})
.consumeNextWith( event -> {
assertEquals("1", event.id().get());
assertEquals("foo", event.data().get());
assertEquals("bar", event.comment().get());
assertFalse(event.event().isPresent());
assertFalse(event.retry().isPresent());
})
.expectComplete()
.verify(Duration.ofSeconds(5L));
}
private static class SseHandler {
public Mono<ServerResponse> string(ServerRequest request) {
Flux<String> flux = Flux.interval(Duration.ofMillis(100)).map(l -> "foo " + l).take(2);
return ServerResponse.ok().body(fromServerSentEvents(flux, String.class));
}
public Mono<ServerResponse> person(ServerRequest request) {
Flux<Person> flux = Flux.interval(Duration.ofMillis(100))
.map(l -> new Person("foo " + l)).take(2);
return ServerResponse.ok().body(fromServerSentEvents(flux, Person.class));
}
public Mono<ServerResponse> sse(ServerRequest request) {
Flux<ServerSentEvent<String>> flux = Flux.interval(Duration.ofMillis(100))
.map(l -> ServerSentEvent.<String>builder().data("foo")
.id(Long.toString(l))
.comment("bar")
.build()).take(2);
return ServerResponse.ok().body(fromServerSentEvents(flux));
}
}
@SuppressWarnings("unused")
private static class Person {
private String name;
public Person() {
}
public Person(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Person person = (Person) o;
return !(this.name != null ? !this.name.equals(person.name) : person.name != null);
}
@Override
public int hashCode() {
return this.name != null ? this.name.hashCode() : 0;
}
@Override
public String toString() {
return "Person{" + "name='" + name + '\'' + '}';
}
}
}