4c7f165c7e
* Burlap & Hessian server added * Burlap & Hessian client work * Fixed main * Fixed formatting * Spring Remote example based on Burlap & Hessian runs in a JUnit test * Fixed main * Fixed formatting * Spring Remote example based on Burlap & Hessian runs in a JUnit test * Spring Remote example based on Burlap & Hessian runs in a JUnit test * Burlap & Hessian client work * Fixed main * Fixed main * Fixed formatting * Fixed formatting * Spring Remote example based on Burlap & Hessian runs in a JUnit test * Spring Remote example based on Burlap & Hessian runs in a JUnit test * Fixed POM * Vertx / RxJava example * BAEL-776 - Vertx and RxJava * BAEL-776 - Vertx and RxJava
95 lines
3.6 KiB
Java
95 lines
3.6 KiB
Java
package com.baeldung;
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import io.reactivex.Flowable;
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import io.vertx.reactivex.core.Vertx;
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import io.vertx.reactivex.core.buffer.Buffer;
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import io.vertx.reactivex.core.file.FileSystem;
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import io.vertx.reactivex.core.http.HttpClient;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.time.ZonedDateTime;
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import static com.baeldung.MetaWeatherClient.getDataByPlaceId;
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import static com.baeldung.MetaWeatherClient.searchByCityName;
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public class VertxWithRxJavaTest {
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private Vertx vertx;
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private HttpClient httpClient;
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private FileSystem fileSystem;
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static Logger log = LoggerFactory.getLogger(VertxWithRxJavaTest.class);
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@Before public void setUp() {
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vertx = io.vertx.reactivex.core.Vertx.vertx();
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httpClient = vertx.createHttpClient();
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fileSystem = vertx.fileSystem();
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}
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@After public void tearDown() {
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vertx.close();
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}
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@Test public void lightLengthTest() throws InterruptedException {
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// read the file that contains one city name per line
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fileSystem
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.rxReadFile("cities.txt").toFlowable()
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.doOnNext(buffer -> log.info("File buffer ---\n{}\n---", buffer))
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// split file content in lines to obtain one city per line
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.flatMap(buffer -> Flowable.fromArray(buffer.toString().split("\\r?\\n")))
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.doOnNext(city -> log.info("City from file: '{}'", city))
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// discard cities that are commented out with a leading '#'
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.filter(city -> !city.startsWith("#"))
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.doOnNext(city -> log.info("City that survived filtering: '{}'", city))
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// for each city sends a request to obtain its 'woeid'
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// and collect the buffer from the answer
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.flatMap(city -> searchByCityName(httpClient, city) )
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.flatMap(response -> response.toFlowable())
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.doOnNext(buffer -> log.info("JSON of city detail: '{}'", buffer))
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// get the woeid of each city
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.map(cityBuffer -> cityBuffer
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.toJsonArray()
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.getJsonObject(0)
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.getLong("woeid"))
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// use the id to ask for data
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.flatMap(cityId -> getDataByPlaceId(httpClient, cityId))
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.flatMap(response -> response
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.toObservable()
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.reduce(
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Buffer.buffer(),
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(total, newBuf) -> total.appendBuffer( newBuf )).toFlowable() )
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// get the JSON object out of the response
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.doOnNext(buffer -> log.info("JSON of place detail: '{}'", buffer))
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.map(buffer -> buffer.toJsonObject())
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// map the JSON in a POJO
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.map(json -> {
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ZonedDateTime sunRise = ZonedDateTime.parse(json.getString("sun_rise"));
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ZonedDateTime sunSet = ZonedDateTime.parse(json.getString("sun_set"));
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String cityName = json.getString("title");
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return new CityAndDayLength(
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cityName,sunSet.toEpochSecond() - sunRise.toEpochSecond());
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})
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// consume the events
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.subscribe(
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cityAndDayLength -> System.out.println(cityAndDayLength),
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ex -> ex.printStackTrace());
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// enough to give time to complete the execution
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Thread.sleep(20000);
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}
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}
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