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Accessing Streaming API using WebClient

Pragya Keshap answered on February 15, 2023 Popularity 1/10 Helpfulness 1/10

answer Accessing Streaming API using WebClient

Accessing Streaming API using WebClient

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WebClient is able to read reactive streams continuously, but the producer needs to “properly” emit it. To achieve it we should set content type to application/json+stream or text/event-stream.

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
public class SampleSpringWebFluxTest {

    private static final Logger LOGGER = LoggerFactory.getLogger(SampleSpringWebFluxTest.class);
    final WebClient client = WebClient.builder().baseUrl("http://localhost:8080").build();

    @Test
    public void testFindPersonsStreamBackPressure() throws TimeoutException, InterruptedException {
        final Waiter waiter = new Waiter();
        Flux<Person> persons = client.get().uri("/persons/stream/back-pressure").retrieve().bodyToFlux(Person.class);
        persons.map(this::doSomeSlowWork).subscribe(person -> {
            waiter.assertNotNull(person);
            LOGGER.info("Client subscribes: {}", person);
            waiter.resume();
        });
        waiter.await(3000, 9);
    }

    private Person doSomeSlowWork(Person person) {
        try {
            Thread.sleep(90);
        }
        catch (InterruptedException e) { }
        return person;
    }
}

https://piotrminkowski.com/2019/11/04/using-reactive-webclient-with-spring-webflux/

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: api java streaming using web-client

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Contributed on Feb 15 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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