diff --git a/jersey-client-rx/pom.xml b/jersey-client-rx/pom.xml new file mode 100644 index 0000000000..24894869a5 --- /dev/null +++ b/jersey-client-rx/pom.xml @@ -0,0 +1,67 @@ + + + 4.0.0 + com.baeldung.samples + jersey-client-rx + 1.0 + jar + + + org.glassfish.jersey.inject + jersey-hk2 + 2.27 + + + org.glassfish.jersey.core + jersey-client + 2.27 + + + org.glassfish.jersey.ext.rx + jersey-rx-client-rxjava + 2.27 + + + org.glassfish.jersey.ext.rx + jersey-rx-client-rxjava2 + 2.27 + + + com.github.tomakehurst + wiremock + 1.58 + test + + + org.junit.vintage + junit-vintage-engine + 5.2.0 + + + org.glassfish.jersey.media + jersey-media-json-jackson + 2.25 + + + com.fasterxml.jackson.jaxrs + jackson-jaxrs-json-provider + 2.4.1 + + + org.slf4j + slf4j-jdk14 + 1.7.25 + + + org.assertj + assertj-core + 3.10.0 + test + + + + UTF-8 + 1.8 + 1.8 + + \ No newline at end of file diff --git a/jersey-client-rx/readme.md b/jersey-client-rx/readme.md new file mode 100644 index 0000000000..d1bc4e950b --- /dev/null +++ b/jersey-client-rx/readme.md @@ -0,0 +1,3 @@ +# Fluent, Reactive Jersey Client Orchestration # + +### Sample code demonstrating the options for asynchronous, reactive RESTful service consumption with JAX-RS ### diff --git a/jersey-client-rx/src/test/java/com/baeldung/samples/jerseyrx/ClientOrchestrationIntegrationTest.java b/jersey-client-rx/src/test/java/com/baeldung/samples/jerseyrx/ClientOrchestrationIntegrationTest.java new file mode 100644 index 0000000000..88a8d67a7d --- /dev/null +++ b/jersey-client-rx/src/test/java/com/baeldung/samples/jerseyrx/ClientOrchestrationIntegrationTest.java @@ -0,0 +1,272 @@ +package com.baeldung.samples.jerseyrx; + +import static com.github.tomakehurst.wiremock.client.WireMock.*; +import static org.assertj.core.api.Assertions.*; + +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.CompletionStage; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.TimeUnit; + +import javax.ws.rs.client.Client; +import javax.ws.rs.client.ClientBuilder; +import javax.ws.rs.client.InvocationCallback; +import javax.ws.rs.client.WebTarget; +import javax.ws.rs.core.GenericType; +import javax.ws.rs.core.MediaType; + +import org.glassfish.jersey.client.rx.rxjava.RxObservableInvoker; +import org.glassfish.jersey.client.rx.rxjava.RxObservableInvokerProvider; +import org.glassfish.jersey.client.rx.rxjava2.RxFlowableInvoker; +import org.glassfish.jersey.client.rx.rxjava2.RxFlowableInvokerProvider; +import org.junit.Before; +import org.junit.Rule; +import org.junit.Test; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.github.tomakehurst.wiremock.junit.WireMockRule; + +import io.reactivex.Flowable; +import rx.Observable; + +/** + * + * @author baeldung + */ +public class ClientOrchestrationIntegrationTest { + + private Client client = ClientBuilder.newClient(); + + private WebTarget userIdService = client.target("http://localhost:8080/id-service/ids"); + private WebTarget nameService = client.target("http://localhost:8080/name-service/users/{userId}/name"); + private WebTarget hashService = client.target("http://localhost:8080/hash-service/{rawValue}"); + + private Logger logger = LoggerFactory.getLogger(ClientOrchestrationIntegrationTest.class); + + private String expectedUserIds = "[1,2,3,4,5,6]"; + + private List expectedNames = Arrays.asList("n/a", "Thor", "Hulk", "BlackWidow", "BlackPanther", "TheTick", "Hawkeye"); + + private List expectedHashValues = Arrays.asList("roht1", "kluh2", "WodiwKcalb3", "RehtnapKclab4", "kciteht5", "eyekwah6"); + + @Rule + public WireMockRule wireMockServer = new WireMockRule(); + + @Before + public void setup() { + + stubFor(get(urlEqualTo("/id-service/ids")).willReturn(aResponse().withBody(expectedUserIds).withHeader("Content-Type", "application/json"))); + + stubFor(get(urlEqualTo("/name-service/users/1/name")).willReturn(aResponse().withBody(expectedNames.get(1)))); + stubFor(get(urlEqualTo("/name-service/users/2/name")).willReturn(aResponse().withBody(expectedNames.get(2)))); + stubFor(get(urlEqualTo("/name-service/users/3/name")).willReturn(aResponse().withBody(expectedNames.get(3)))); + stubFor(get(urlEqualTo("/name-service/users/4/name")).willReturn(aResponse().withBody(expectedNames.get(4)))); + stubFor(get(urlEqualTo("/name-service/users/5/name")).willReturn(aResponse().withBody(expectedNames.get(5)))); + stubFor(get(urlEqualTo("/name-service/users/6/name")).willReturn(aResponse().withBody(expectedNames.get(6)))); + + stubFor(get(urlEqualTo("/hash-service/Thor1")).willReturn(aResponse().withBody(expectedHashValues.get(0)))); + stubFor(get(urlEqualTo("/hash-service/Hulk2")).willReturn(aResponse().withBody(expectedHashValues.get(1)))); + stubFor(get(urlEqualTo("/hash-service/BlackWidow3")).willReturn(aResponse().withBody(expectedHashValues.get(2)))); + stubFor(get(urlEqualTo("/hash-service/BlackPanther4")).willReturn(aResponse().withBody(expectedHashValues.get(3)))); + stubFor(get(urlEqualTo("/hash-service/TheTick5")).willReturn(aResponse().withBody(expectedHashValues.get(4)))); + stubFor(get(urlEqualTo("/hash-service/Hawkeye6")).willReturn(aResponse().withBody(expectedHashValues.get(5)))); + + } + + @Test + public void callBackOrchestrate() throws InterruptedException { + List receivedHashValues = new ArrayList<>(); + + final CountDownLatch completionTracker = new CountDownLatch(expectedHashValues.size()); // used to keep track of the progress of the subsequent calls + + userIdService.request().accept(MediaType.APPLICATION_JSON).async().get(new InvocationCallback>() { + @Override + public void completed(List employeeIds) { + logger.info("[CallbackExample] id-service result: {}", employeeIds); + employeeIds.forEach((id) -> { + // for each employee ID, get the name + nameService.resolveTemplate("userId", id).request().async().get(new InvocationCallback() { + + @Override + public void completed(String response) { + logger.info("[CallbackExample] name-service result: {}", response); + + hashService.resolveTemplate("rawValue", response + id).request().async().get(new InvocationCallback() { + @Override + public void completed(String response) { + logger.info("[CallbackExample] hash-service result: {}", response); + receivedHashValues.add(response); + completionTracker.countDown(); + } + + @Override + public void failed(Throwable throwable) { + logger.warn("[CallbackExample] An error has occurred in the hashing request step!", throwable); + } + }); + } + + @Override + public void failed(Throwable throwable) { + logger.warn("[CallbackExample] An error has occurred in the username request step!", throwable); + } + }); + }); + + } + + @Override + public void failed(Throwable throwable) { + logger.warn("[CallbackExample] An error has occurred in the userId request step!", throwable); + } + }); + + // wait for async calls to complete + try { + // wait for inner requests to complete in 10 seconds + if (!completionTracker.await(10, TimeUnit.SECONDS)) { + logger.warn("[CallbackExample] Some requests didn't complete within the timeout"); + } + } catch (InterruptedException e) { + logger.error("Interrupted!", e); + } + + assertThat(receivedHashValues).containsAll(expectedHashValues); + } + + @Test + public void rxOrchestrate() throws InterruptedException { + List receivedHashValues = new ArrayList<>(); + + final CountDownLatch completionTracker = new CountDownLatch(expectedHashValues.size()); // used to keep track of the progress of the subsequent calls + + CompletionStage> userIdStage = userIdService.request().accept(MediaType.APPLICATION_JSON).rx().get(new GenericType>() { + }).exceptionally((throwable) -> { + logger.warn("[CompletionStageExample] An error has occurred"); + return null; + }); + + userIdStage.thenAcceptAsync(employeeIds -> { + logger.info("[CompletionStageExample] id-service result: {}", employeeIds); + employeeIds.forEach((Long id) -> { + CompletableFuture completable = nameService.resolveTemplate("userId", id).request().rx().get(String.class).toCompletableFuture(); + + completable.thenAccept((String userName) -> { + logger.info("[CompletionStageExample] name-service result: {}", userName); + hashService.resolveTemplate("rawValue", userName + id).request().rx().get(String.class).toCompletableFuture().thenAcceptAsync(hashValue -> { + logger.info("[CompletionStageExample] hash-service result: {}", hashValue); + receivedHashValues.add(hashValue); + completionTracker.countDown(); + }).exceptionally((throwable) -> { + logger.warn("[CompletionStageExample] Hash computation failed for {}", id); + completionTracker.countDown(); + return null; + }); + + }); + + }); + }); + + // wait for async calls to complete + try { + // wait for inner requests to complete in 10 seconds + if (!completionTracker.await(10, TimeUnit.SECONDS)) { + logger.warn("[CallbackExample] Some requests didn't complete within the timeout"); + } + } catch (InterruptedException e) { + logger.error("Interrupted!", e); + } + + assertThat(receivedHashValues).containsAll(expectedHashValues); + } + + @Test + public void observableJavaOrchestrate() throws InterruptedException { + List receivedHashValues = new ArrayList<>(); + + final CountDownLatch completionTracker = new CountDownLatch(expectedHashValues.size()); // used to keep track of the progress of the subsequent calls + + Observable> observableUserIdService = userIdService.register(RxObservableInvokerProvider.class).request().accept(MediaType.APPLICATION_JSON).rx(RxObservableInvoker.class).get(new GenericType>() { + }).asObservable(); + + observableUserIdService.subscribe((List employeeIds) -> { + logger.info("[ObservableExample] id-service result: {}", employeeIds); + Observable.from(employeeIds).subscribe(id -> nameService.register(RxObservableInvokerProvider.class).resolveTemplate("userId", id).request().rx(RxObservableInvoker.class).get(String.class).asObservable() // gotten the name for the given + // userId + .doOnError((throwable) -> { + logger.warn("[ObservableExample] An error has occurred in the username request step {}", throwable.getMessage()); + }).subscribe(userName -> { + logger.info("[ObservableExample] name-service result: {}", userName); + hashService.register(RxObservableInvokerProvider.class).resolveTemplate("rawValue", userName + id).request().rx(RxObservableInvoker.class).get(String.class).asObservable() // gotten the hash value for + // userId+username + .doOnError((throwable) -> { + logger.warn("[ObservableExample] An error has occurred in the hashing request step {}", throwable.getMessage()); + }).subscribe(hashValue -> { + logger.info("[ObservableExample] hash-service result: {}", hashValue); + receivedHashValues.add(hashValue); + completionTracker.countDown(); + }); + })); + }); + + // wait for async calls to complete + try { + // wait for inner requests to complete in 10 seconds + if (!completionTracker.await(10, TimeUnit.SECONDS)) { + logger.warn("[CallbackExample] Some requests didn't complete within the timeout"); + } + } catch (InterruptedException e) { + logger.error("Interrupted!", e); + } + + assertThat(receivedHashValues).containsAll(expectedHashValues); + } + + @Test + public void flowableJavaOrchestrate() throws InterruptedException { + List receivedHashValues = new ArrayList<>(); + + final CountDownLatch completionTracker = new CountDownLatch(expectedHashValues.size()); // used to keep track of the progress of the subsequent calls + + Flowable> userIdFlowable = userIdService.register(RxFlowableInvokerProvider.class).request().rx(RxFlowableInvoker.class).get(new GenericType>() { + }); + + userIdFlowable.subscribe((List employeeIds) -> { + logger.info("[FlowableExample] id-service result: {}", employeeIds); + Flowable.fromIterable(employeeIds).subscribe(id -> { + nameService.register(RxFlowableInvokerProvider.class).resolveTemplate("userId", id).request().rx(RxFlowableInvoker.class).get(String.class) // gotten the name for the given userId + .doOnError((throwable) -> { + logger.warn("[FlowableExample] An error has occurred in the username request step {}", throwable.getMessage()); + }).subscribe(userName -> { + logger.info("[FlowableExample] name-service result: {}", userName); + hashService.register(RxFlowableInvokerProvider.class).resolveTemplate("rawValue", userName + id).request().rx(RxFlowableInvoker.class).get(String.class) // gotten the hash value for userId+username + .doOnError((throwable) -> { + logger.warn(" [FlowableExample] An error has occurred in the hashing request step!", throwable); + }).subscribe(hashValue -> { + logger.info("[FlowableExample] hash-service result: {}", hashValue); + receivedHashValues.add(hashValue); + completionTracker.countDown(); + }); + }); + }); + }); + + // wait for async calls to complete + try { + // wait for inner requests to complete in 10 seconds + if (!completionTracker.await(10, TimeUnit.SECONDS)) { + logger.warn("[CallbackExample] Some requests didn't complete within the timeout"); + } + } catch (InterruptedException e) { + logger.error("Interrupted!", e); + } + + assertThat(receivedHashValues).containsAll(expectedHashValues); + } + +} diff --git a/pom.xml b/pom.xml index 78fb4e2f45..ad2f607141 100644 --- a/pom.xml +++ b/pom.xml @@ -584,6 +584,7 @@ spring-security-thymeleaf persistence-modules/java-jdbi jersey + jersey-client-rx java-spi performance-tests twilio @@ -1123,6 +1124,7 @@ spring-security-thymeleaf persistence-modules/java-jdbi jersey + jersey-client-rx java-spi performance-tests twilio diff --git a/spring-core/src/main/java/com/baeldung/dependency/exception/app/CustomConfiguration.java b/spring-core/src/main/java/com/baeldung/dependency/exception/app/CustomConfiguration.java new file mode 100644 index 0000000000..4366cb617a --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/dependency/exception/app/CustomConfiguration.java @@ -0,0 +1,13 @@ +package com.baeldung.dependency.exception.app; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.ComponentScan; + +@SpringBootApplication +@ComponentScan(basePackages = "com.baeldung.dependency.exception") +public class CustomConfiguration { + public static void main(String[] args) { + SpringApplication.run(CustomConfiguration.class, args); + } +} diff --git a/spring-core/src/main/java/com/baeldung/dependency/exception/app/PurchaseDeptService.java b/spring-core/src/main/java/com/baeldung/dependency/exception/app/PurchaseDeptService.java new file mode 100644 index 0000000000..1e6fad63aa --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/dependency/exception/app/PurchaseDeptService.java @@ -0,0 +1,13 @@ +package com.baeldung.dependency.exception.app; + +import com.baeldung.dependency.exception.repository.InventoryRepository; +import org.springframework.stereotype.Service; + +@Service +public class PurchaseDeptService { + private InventoryRepository repository; + + public PurchaseDeptService(InventoryRepository repository) { + this.repository = repository; + } +} \ No newline at end of file diff --git a/spring-core/src/main/java/com/baeldung/dependency/exception/repository/DressRepository.java b/spring-core/src/main/java/com/baeldung/dependency/exception/repository/DressRepository.java new file mode 100644 index 0000000000..4a6c836143 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/dependency/exception/repository/DressRepository.java @@ -0,0 +1,9 @@ +package com.baeldung.dependency.exception.repository; + +import org.springframework.context.annotation.Primary; +import org.springframework.stereotype.Repository; + +@Primary +@Repository +public class DressRepository implements InventoryRepository { +} diff --git a/spring-core/src/main/java/com/baeldung/dependency/exception/repository/InventoryRepository.java b/spring-core/src/main/java/com/baeldung/dependency/exception/repository/InventoryRepository.java new file mode 100644 index 0000000000..ccb2ad9c32 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/dependency/exception/repository/InventoryRepository.java @@ -0,0 +1,7 @@ +package com.baeldung.dependency.exception.repository; + +import org.springframework.stereotype.Repository; + +@Repository +public interface InventoryRepository { +} diff --git a/spring-core/src/main/java/com/baeldung/dependency/exception/repository/ShoeRepository.java b/spring-core/src/main/java/com/baeldung/dependency/exception/repository/ShoeRepository.java new file mode 100644 index 0000000000..60495914cd --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/dependency/exception/repository/ShoeRepository.java @@ -0,0 +1,7 @@ +package com.baeldung.dependency.exception.repository; + +import org.springframework.stereotype.Repository; + +@Repository +public class ShoeRepository implements InventoryRepository { +}