Add files via upload
This commit is contained in:
k0l0ssus
GitHub
parent
93bfc63f15
commit
c195c5dc50
30
jersey-client-rx/pom.xml
Normal file
30
jersey-client-rx/pom.xml
Normal file
@ -0,0 +1,30 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<groupId>com.baeldung.samples</groupId>
|
||||
<artifactId>jersey-client-rx</artifactId>
|
||||
<version>1.0</version>
|
||||
<packaging>jar</packaging>
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.glassfish.jersey.core</groupId>
|
||||
<artifactId>jersey-client</artifactId>
|
||||
<version>2.27</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.glassfish.jersey.ext.rx</groupId>
|
||||
<artifactId>jersey-rx-client-rxjava</artifactId>
|
||||
<version>2.27</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.glassfish.jersey.ext.rx</groupId>
|
||||
<artifactId>jersey-rx-client-rxjava2</artifactId>
|
||||
<version>2.27</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
<properties>
|
||||
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||
<maven.compiler.source>1.8</maven.compiler.source>
|
||||
<maven.compiler.target>1.8</maven.compiler.target>
|
||||
</properties>
|
||||
</project>
|
||||
@ -0,0 +1,203 @@
|
||||
package com.baeldung.samples.jerseyrx;
|
||||
|
||||
import io.reactivex.Flowable;
|
||||
import io.reactivex.disposables.Disposable;
|
||||
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 java.util.logging.Level;
|
||||
import org.glassfish.jersey.client.rx.rxjava.RxObservableInvokerProvider;
|
||||
import org.glassfish.jersey.client.rx.rxjava.RxObservableInvoker;
|
||||
import java.util.logging.Logger;
|
||||
import java.util.stream.Collectors;
|
||||
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 org.glassfish.jersey.client.rx.rxjava2.RxFlowableInvoker;
|
||||
import org.glassfish.jersey.client.rx.rxjava2.RxFlowableInvokerProvider;
|
||||
import rx.Observable;
|
||||
|
||||
/**
|
||||
*
|
||||
* @author baeldung
|
||||
*/
|
||||
public class ClientOrchestration {
|
||||
|
||||
Client client = ClientBuilder.newClient();
|
||||
WebTarget userIdService = client.target("http:localhost:8080/serviceA/id?limit=10");
|
||||
WebTarget nameService = client.target("http:localhost:8080/serviceA/{empId}/name");
|
||||
WebTarget hashService = client.target("http:localhost:8080/serviceA/{comboIDandName}/address");
|
||||
|
||||
Logger logger = Logger.getLogger("ClientOrchestrator");
|
||||
|
||||
public static void main(String[] args) {
|
||||
ClientOrchestration orchestrator = new ClientOrchestration();
|
||||
|
||||
orchestrator.callBackOrchestrate();
|
||||
orchestrator.rxOrchestrate();
|
||||
orchestrator.observableJavaOrchestrate();
|
||||
orchestrator.flowableJavaOrchestrate();
|
||||
|
||||
}
|
||||
|
||||
public void callBackOrchestrate() {
|
||||
logger.info("Orchestrating with the pyramid of doom");
|
||||
userIdService.request()
|
||||
.async()
|
||||
.get(new InvocationCallback<List<Long>>() {
|
||||
@Override
|
||||
public void completed(List<Long> empIds) {
|
||||
CountDownLatch completionTracker = new CountDownLatch(empIds.size()); //used to keep track of the progress of the subsequent calls
|
||||
empIds.forEach((id) -> {
|
||||
//for each employee ID, get the name
|
||||
nameService.resolveTemplate("empId", id).request()
|
||||
.async()
|
||||
.get(new InvocationCallback<String>() {
|
||||
@Override
|
||||
public void completed(String response) {
|
||||
completionTracker.countDown();
|
||||
hashService.request().async().get(new InvocationCallback<String>() {
|
||||
@Override
|
||||
public void completed(String response) {
|
||||
logger.log(Level.INFO, "The hash output {0}", response);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void failed(Throwable throwable) {
|
||||
completionTracker.countDown();
|
||||
logger.log(Level.WARNING, "An error has occurred in the hashing request step {0}", throwable.getMessage());
|
||||
}
|
||||
});
|
||||
}
|
||||
@Override
|
||||
public void failed(Throwable throwable) {
|
||||
completionTracker.countDown();
|
||||
logger.log(Level.WARNING, "An error has occurred in the username request step {0}", throwable.getMessage());
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
try {
|
||||
if (!completionTracker.await(10, TimeUnit.SECONDS)) { //wait for inner requests to complete in 10 seconds
|
||||
logger.warning("Some requests didn't complete within the timeout");
|
||||
}
|
||||
} catch (InterruptedException ex) {
|
||||
Logger.getLogger(ClientOrchestration.class.getName()).log(Level.SEVERE, null, ex);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void failed(Throwable throwable) {
|
||||
//implement callback
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
public void rxOrchestrate() {
|
||||
logger.info("Orchestrating with a CompletionStage");
|
||||
CompletionStage<List<Long>> userIdStage = userIdService.request()
|
||||
.rx()
|
||||
.get(new GenericType<List<Long>>() {
|
||||
})
|
||||
.exceptionally((Throwable throwable) -> {
|
||||
logger.warning("An error has occurred");
|
||||
return null;
|
||||
});
|
||||
|
||||
CompletionStage<List<CompletionStage<String>>> completedNameStage = userIdStage.thenApplyAsync(list -> list.stream().map((Long id) -> {
|
||||
CompletionStage nameStage = nameService.resolveTemplate("empId", id).request().rx().get(String.class);
|
||||
}).collect(Collectors.toList()));
|
||||
|
||||
userIdStage.thenAcceptAsync(listOfIds -> {
|
||||
listOfIds.stream().map((Long id) -> {
|
||||
CompletableFuture<String> completable = nameService.resolveTemplate("empId", id)
|
||||
.request()
|
||||
.rx()
|
||||
.get(String.class)
|
||||
.toCompletableFuture();
|
||||
|
||||
completable.thenAccept((String userName) -> {
|
||||
hashService.resolveTemplate("comboIDandName", userName + id)
|
||||
.request()
|
||||
.rx()
|
||||
.get(String.class)
|
||||
.toCompletableFuture()
|
||||
.thenAcceptAsync(hashValue -> logger.log(Level.INFO, "The hash output {0}", hashValue))
|
||||
.exceptionally((Throwable throwable) -> {
|
||||
logger.log(Level.WARNING, "Hash computation failed for {0}", id);
|
||||
return null;
|
||||
});
|
||||
|
||||
});
|
||||
|
||||
});
|
||||
});
|
||||
|
||||
}
|
||||
|
||||
public void observableJavaOrchestrate() {
|
||||
|
||||
logger.info("Orchestrating with Observables");
|
||||
|
||||
client.register(RxObservableInvokerProvider.class);
|
||||
|
||||
Observable<List<Long>> userIdObservable = userIdService.request()
|
||||
.rx(RxObservableInvoker.class)
|
||||
.get(new GenericType<List<Long>>() {
|
||||
});
|
||||
|
||||
userIdObservable.subscribe((List<Long> listOfIds) -> {
|
||||
Observable.from(listOfIds).map(id
|
||||
-> nameService.resolveTemplate("empId", id)
|
||||
.request()
|
||||
.rx(RxObservableInvoker.class)
|
||||
.get(String.class)
|
||||
.asObservable() //gotten the name for the given empId
|
||||
.doOnError(throwable -> logger.log(Level.WARNING, "An error has occurred in the username request step {0}", throwable.getMessage()))
|
||||
.subscribe(userName -> hashService.resolveTemplate("comboIDandName", userName + id)
|
||||
.request()
|
||||
.rx(RxObservableInvoker.class)
|
||||
.get(String.class)
|
||||
.asObservable() //gotten the hash value for empId+username
|
||||
.doOnError(throwable -> logger.log(Level.WARNING, "An error has occurred in the hashing request step {0}", throwable.getMessage()))
|
||||
.subscribe(hashValue -> logger.log(Level.INFO, "The hash output {0}", hashValue))));
|
||||
});
|
||||
|
||||
}
|
||||
|
||||
public void flowableJavaOrchestrate() {
|
||||
|
||||
logger.info("Orchestrating with Flowable");
|
||||
|
||||
client.register(RxFlowableInvokerProvider.class);
|
||||
|
||||
Flowable<List<Long>> userIdObservable = userIdService.request()
|
||||
.rx(RxFlowableInvoker.class)
|
||||
.get(new GenericType<List<Long>>() {
|
||||
});
|
||||
|
||||
Disposable subscribe = userIdObservable.subscribe((List<Long> listOfIds) -> {
|
||||
Observable.from(listOfIds).map(id
|
||||
-> nameService.resolveTemplate("empId", id)
|
||||
.request()
|
||||
.rx(RxObservableInvoker.class)
|
||||
.get(String.class)
|
||||
.asObservable() //gotten the name for the given empId
|
||||
.doOnError(throwable -> logger.log(Level.WARNING, "An error has occurred in the username request step {0}", throwable.getMessage()))
|
||||
.subscribe(userName -> hashService.resolveTemplate("comboIDandName", userName + id)
|
||||
.request()
|
||||
.rx(RxObservableInvoker.class)
|
||||
.get(String.class)
|
||||
.asObservable() //gotten the hash value for empId+username
|
||||
.doOnError(throwable -> logger.warning("An error has occurred in the hashing request step " + throwable.getMessage()))
|
||||
.subscribe(hashValue -> logger.log(Level.INFO, "The hash output {0}", hashValue))));
|
||||
});
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user