[
https://issues.apache.org/jira/browse/CAMEL-10806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16467232#comment-16467232
]
ASF GitHub Bot commented on CAMEL-10806:
----------------------------------------
lburgazzoli closed pull request #2328: CAMEL-10806: Add a RxJava2 module
URL: https://github.com/apache/camel/pull/2328
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git a/apache-camel/pom.xml b/apache-camel/pom.xml
index 8a4b80a4edc..6ac762f7683 100644
--- a/apache-camel/pom.xml
+++ b/apache-camel/pom.xml
@@ -845,6 +845,10 @@
<groupId>org.apache.camel</groupId>
<artifactId>camel-reactor</artifactId>
</dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2</artifactId>
+ </dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-rest-swagger</artifactId>
@@ -2139,6 +2143,11 @@
<artifactId>camel-reactor-starter</artifactId>
<version>${project.version}</version>
</dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2-starter</artifactId>
+ <version>${project.version}</version>
+ </dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-rest-swagger-starter</artifactId>
diff --git a/apache-camel/src/main/descriptors/common-bin.xml
b/apache-camel/src/main/descriptors/common-bin.xml
index 3ab0c73c6ea..82a5bf14103 100644
--- a/apache-camel/src/main/descriptors/common-bin.xml
+++ b/apache-camel/src/main/descriptors/common-bin.xml
@@ -220,6 +220,7 @@
<include>org.apache.camel:camel-rabbitmq</include>
<include>org.apache.camel:camel-reactive-streams</include>
<include>org.apache.camel:camel-reactor</include>
+ <include>org.apache.camel:camel-rxjava2</include>
<include>org.apache.camel:camel-restlet</include>
<include>org.apache.camel:camel-rest-swagger</include>
<include>org.apache.camel:camel-ribbon</include>
@@ -528,6 +529,7 @@
<include>org.apache.camel:camel-rabbitmq-starter</include>
<include>org.apache.camel:camel-reactive-streams-starter</include>
<include>org.apache.camel:camel-reactor-starter</include>
+ <include>org.apache.camel:camel-rxjava2-starter</include>
<include>org.apache.camel:camel-restlet-starter</include>
<include>org.apache.camel:camel-rest-swagger-starter</include>
<include>org.apache.camel:camel-ribbon-starter</include>
diff --git a/bom/camel-bom/pom.xml b/bom/camel-bom/pom.xml
index b589e03ffc2..9f8ecd3bbc5 100644
--- a/bom/camel-bom/pom.xml
+++ b/bom/camel-bom/pom.xml
@@ -2108,6 +2108,16 @@
<artifactId>camel-rx-starter</artifactId>
<version>${project.version}</version>
</dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2</artifactId>
+ <version>${project.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2-starter</artifactId>
+ <version>${project.version}</version>
+ </dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-salesforce</artifactId>
diff --git a/components/camel-reactor/src/test/resources/log4j2.properties
b/components/camel-reactor/src/test/resources/log4j2.properties
index 536f7f60bef..55688f6f004 100644
--- a/components/camel-reactor/src/test/resources/log4j2.properties
+++ b/components/camel-reactor/src/test/resources/log4j2.properties
@@ -17,7 +17,7 @@
appender.file.type = File
appender.file.name = file
-appender.file.fileName = target/camel-reactive-streams-test.log
+appender.file.fileName = target/camel-reactor-test.log
appender.file.layout.type = PatternLayout
appender.file.layout.pattern = %d [%-15.15t] %-5p %-30.30c{1} - %m%n
appender.stdout.type = Console
diff --git a/components/camel-rxjava2/pom.xml b/components/camel-rxjava2/pom.xml
new file mode 100644
index 00000000000..8585f1050cd
--- /dev/null
+++ b/components/camel-rxjava2/pom.xml
@@ -0,0 +1,104 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Licensed to the Apache Software Foundation (ASF) under one or more
+ contributor license agreements. See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The ASF licenses this file to You 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.
+-->
+<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/maven-v4_0_0.xsd";>
+ <modelVersion>4.0.0</modelVersion>
+
+ <parent>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>components</artifactId>
+ <version>2.22.0-SNAPSHOT</version>
+ </parent>
+
+ <artifactId>camel-rxjava2</artifactId>
+ <packaging>jar</packaging>
+ <name>Camel :: RxJava2</name>
+ <description>RxJava2 based back-end for Camel's reactive streams
component</description>
+
+ <properties>
+ <!-- use by camel-catalog -->
+ <firstVersion>2.22.0</firstVersion>
+ <label>reactive,streams</label>
+
+
<camel.osgi.export.pkg>org.apache.camel.component.rxjava2.*</camel.osgi.export.pkg>
+ </properties>
+
+ <dependencies>
+
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-core</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-reactive-streams</artifactId>
+ </dependency>
+
+ <dependency>
+ <groupId>org.reactivestreams</groupId>
+ <artifactId>reactive-streams</artifactId>
+ <version>${reactive-streams-version}</version>
+ </dependency>
+
+ <dependency>
+ <groupId>io.reactivex.rxjava2</groupId>
+ <artifactId>rxjava</artifactId>
+ <version>${rxjava2-version}</version>
+ </dependency>
+ <dependency>
+ <!-- See https://github.com/ReactiveX/RxJava/issues/5999 -->
+ <groupId>com.github.akarnokd</groupId>
+ <artifactId>rxjava2-extensions</artifactId>
+ <version>${rxjava2-extensions-version}</version>
+ </dependency>
+
+ <!-- test dependencies -->
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-test</artifactId>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-api</artifactId>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-core</artifactId>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-slf4j-impl</artifactId>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>junit</groupId>
+ <artifactId>junit</artifactId>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.mockito</groupId>
+ <artifactId>mockito-core</artifactId>
+ <version>${mockito-version}</version>
+ <scope>test</scope>
+ </dependency>
+ </dependencies>
+
+</project>
diff --git a/components/camel-rxjava2/src/main/docs/rxjava2-component.adoc
b/components/camel-rxjava2/src/main/docs/rxjava2-component.adoc
new file mode 100644
index 00000000000..806301f60d8
--- /dev/null
+++ b/components/camel-rxjava2/src/main/docs/rxjava2-component.adoc
@@ -0,0 +1,16 @@
+## RxJava2 Component
+
+*Available as of Camel version 2.22*
+
+Maven users will need to add the following dependency to their `pom.xml`
+for this component:
+
+[source,xml]
+------------------------------------------------------------
+<dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2</artifactId>
+ <version>x.x.x</version>
+ <!-- use the same version as your Camel core version -->
+</dependency>
+------------------------------------------------------------
\ No newline at end of file
diff --git
a/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaCamelProcessor.java
b/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaCamelProcessor.java
new file mode 100644
index 00000000000..adb4de11091
--- /dev/null
+++
b/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaCamelProcessor.java
@@ -0,0 +1,120 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.Objects;
+import java.util.concurrent.atomic.AtomicReference;
+
+import hu.akarnokd.rxjava2.processors.MulticastProcessor;
+import io.reactivex.BackpressureStrategy;
+import io.reactivex.Flowable;
+import io.reactivex.FlowableEmitter;
+import io.reactivex.processors.FlowableProcessor;
+import org.apache.camel.Exchange;
+import
org.apache.camel.component.reactive.streams.ReactiveStreamsBackpressureStrategy;
+import
org.apache.camel.component.reactive.streams.ReactiveStreamsDiscardedException;
+import org.apache.camel.component.reactive.streams.ReactiveStreamsHelper;
+import org.apache.camel.component.reactive.streams.ReactiveStreamsProducer;
+import org.apache.camel.util.ObjectHelper;
+import org.reactivestreams.Publisher;
+
+final class RxJavaCamelProcessor implements Closeable {
+ private final String name;
+ private final RxJavaStreamsService service;
+ private final AtomicReference<FlowableEmitter<Exchange>> camelEmitter;
+ private FlowableProcessor<Exchange> publisher;
+ private ReactiveStreamsProducer camelProducer;
+
+ RxJavaCamelProcessor(RxJavaStreamsService service, String name) {
+ this.service = service;
+ this.name = name;
+ this.camelProducer = null;
+ this.camelEmitter = new AtomicReference<>();
+ this.publisher = MulticastProcessor.create(1); // Buffered downstream
if needed
+ }
+
+ @Override
+ public void close() throws IOException {
+ detach();
+ }
+
+ Publisher<Exchange> getPublisher() {
+ return publisher;
+ }
+
+ synchronized void attach(ReactiveStreamsProducer producer) {
+ Objects.requireNonNull(producer, "producer cannot be null, use the
detach method");
+
+ if (this.camelProducer != null) {
+ throw new IllegalStateException("A producer is already attached to
the stream '" + name + "'");
+ }
+
+ if (this.camelProducer != producer) {
+ detach();
+
+ ReactiveStreamsBackpressureStrategy strategy =
producer.getEndpoint().getBackpressureStrategy();
+ Flowable<Exchange> flow = Flowable.create(camelEmitter::set,
BackpressureStrategy.MISSING);
+
+ if (ObjectHelper.equal(strategy,
ReactiveStreamsBackpressureStrategy.OLDEST)) {
+ flow.onBackpressureDrop(this::onBackPressure)
+ .doAfterNext(this::onItemEmitted)
+ .subscribe(this.publisher);
+ } else if (ObjectHelper.equal(strategy,
ReactiveStreamsBackpressureStrategy.LATEST)) {
+ flow.doAfterNext(this::onItemEmitted)
+ .onBackpressureLatest()
+ .subscribe(this.publisher);
+ } else {
+ flow.doAfterNext(this::onItemEmitted)
+ .onBackpressureBuffer()
+ .subscribe(this.publisher);
+ }
+
+ camelProducer = producer;
+ }
+ }
+
+ synchronized void detach() {
+ this.camelProducer = null;
+ this.camelEmitter.set(null);
+ }
+
+ void send(Exchange exchange) {
+ if (service.isRunAllowed()) {
+ FlowableEmitter<Exchange> emitter =
ObjectHelper.notNull(camelEmitter.get(), "FlowableEmitter");
+ emitter.onNext(exchange);
+ }
+ }
+
+ // **************************************
+ // Helpers
+ // **************************************
+
+ private void onItemEmitted(Exchange exchange) {
+ if (service.isRunAllowed()) {
+ ReactiveStreamsHelper.invokeDispatchCallback(exchange);
+ }
+ }
+
+ private void onBackPressure(Exchange exchange) {
+ ReactiveStreamsHelper.invokeDispatchCallback(
+ exchange,
+ new ReactiveStreamsDiscardedException("Discarded by back pressure
strategy", exchange, name)
+ );
+ }
+}
diff --git
a/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsConstants.java
b/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsConstants.java
new file mode 100644
index 00000000000..6f46846d263
--- /dev/null
+++
b/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsConstants.java
@@ -0,0 +1,38 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import org.apache.camel.AsyncCallback;
+
+/**
+ * Useful constants used in the Camel Reactive Streams component.
+ */
+public final class RxJavaStreamsConstants {
+ public static final String SERVICE_NAME = "rxjava2";
+
+ /**
+ * An implementation of the {@link AsyncCallback} that does nothing.
+ */
+ public static final AsyncCallback EMPTY_ASYNC_CALLBACK = new
AsyncCallback() {
+ @Override
+ public void done(boolean doneSync) {
+ }
+ };
+
+ private RxJavaStreamsConstants() {
+ }
+}
diff --git
a/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsService.java
b/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsService.java
new file mode 100644
index 00000000000..6b8cee00965
--- /dev/null
+++
b/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsService.java
@@ -0,0 +1,342 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+import io.reactivex.Flowable;
+import io.reactivex.Single;
+import org.apache.camel.CamelContext;
+import org.apache.camel.Exchange;
+import org.apache.camel.builder.RouteBuilder;
+import
org.apache.camel.component.reactive.streams.ReactiveStreamsCamelSubscriber;
+import org.apache.camel.component.reactive.streams.ReactiveStreamsConsumer;
+import org.apache.camel.component.reactive.streams.ReactiveStreamsHelper;
+import org.apache.camel.component.reactive.streams.ReactiveStreamsProducer;
+import
org.apache.camel.component.reactive.streams.api.CamelReactiveStreamsService;
+import org.apache.camel.component.reactive.streams.util.BodyConverter;
+import org.apache.camel.component.reactive.streams.util.ConvertingPublisher;
+import org.apache.camel.component.reactive.streams.util.ConvertingSubscriber;
+import org.apache.camel.component.reactive.streams.util.UnwrapStreamProcessor;
+import org.apache.camel.spi.Synchronization;
+import org.apache.camel.support.ServiceSupport;
+import org.apache.camel.util.function.Suppliers;
+import org.reactivestreams.Publisher;
+import org.reactivestreams.Subscriber;
+
+final class RxJavaStreamsService extends ServiceSupport implements
CamelReactiveStreamsService {
+ private final CamelContext context;
+ private final Supplier<UnwrapStreamProcessor>
unwrapStreamProcessorSupplier;
+ private final ConcurrentMap<String, RxJavaCamelProcessor> publishers;
+ private final ConcurrentMap<String, ReactiveStreamsCamelSubscriber>
subscribers;
+ private final ConcurrentMap<String, String> publishedUriToStream;
+ private final ConcurrentMap<String, String> requestedUriToStream;
+
+ RxJavaStreamsService(CamelContext context) {
+ this.context = context;
+ this.publishers = new ConcurrentHashMap<>();
+ this.subscribers = new ConcurrentHashMap<>();
+ this.publishedUriToStream = new ConcurrentHashMap<>();
+ this.requestedUriToStream = new ConcurrentHashMap<>();
+ this.unwrapStreamProcessorSupplier =
Suppliers.memorize(UnwrapStreamProcessor::new);
+ }
+
+ @Override
+ public String getId() {
+ return RxJavaStreamsConstants.SERVICE_NAME;
+ }
+
+ // ******************************************
+ // Lifecycle
+ // ******************************************
+
+ @Override
+ public void doStart() throws Exception {
+ }
+
+ @Override
+ public void doStop() throws Exception {
+ for (RxJavaCamelProcessor processor : publishers.values()) {
+ processor.close();
+ }
+ for (ReactiveStreamsCamelSubscriber subscriber : subscribers.values())
{
+ subscriber.close();
+ }
+ }
+
+ // ******************************************
+ //
+ // ******************************************
+
+ @Override
+ public Publisher<Exchange> fromStream(String name) {
+ return getCamelProcessor(name).getPublisher();
+ }
+
+ @Override
+ public <T> Publisher<T> fromStream(String name, Class<T> type) {
+ final Publisher<Exchange> publisher = fromStream(name);
+
+ if (Exchange.class.isAssignableFrom(type)) {
+ return Publisher.class.cast(publisher);
+ }
+
+ return
Flowable.fromPublisher(publisher).map(BodyConverter.forType(type)::apply);
+ }
+
+ @Override
+ public ReactiveStreamsCamelSubscriber streamSubscriber(String name) {
+ return subscribers.computeIfAbsent(name, n -> new
ReactiveStreamsCamelSubscriber(name));
+ }
+
+ @SuppressWarnings("unchecked")
+ public <T> Subscriber<T> streamSubscriber(String name, Class<T> type) {
+ final Subscriber<Exchange> subscriber = streamSubscriber(name);
+
+ if (Exchange.class.equals(type)) {
+ return Subscriber.class.cast(subscriber);
+ }
+
+ return new ConvertingSubscriber<>(subscriber, context);
+ }
+
+ @Override
+ public Publisher<Exchange> toStream(String name, Object data) {
+ return doRequest(
+ name,
+ ReactiveStreamsHelper.convertToExchange(context, data)
+ );
+ }
+
+ @Override
+ public Function<?, ? extends Publisher<Exchange>> toStream(String name) {
+ return data -> toStream(name, data);
+ }
+
+ @Override
+ public <T> Publisher<T> toStream(String name, Object data, Class<T> type) {
+ return new ConvertingPublisher<>(toStream(name, data), type);
+ }
+
+ @Override
+ public <T> Function<Object, Publisher<T>> toStream(String name, Class<T>
type) {
+ return data -> toStream(name, data, type);
+ }
+
+ @Override
+ public Publisher<Exchange> from(String uri) {
+ final String name = publishedUriToStream.computeIfAbsent(uri, camelUri
-> {
+ try {
+ String uuid = context.getUuidGenerator().generateUuid();
+
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from(camelUri).to("reactive-streams:" + uuid);
+ }
+ });
+
+ return uuid;
+ } catch (Exception e) {
+ throw new IllegalStateException("Unable to create source
reactive stream from direct URI: " + uri, e);
+ }
+ });
+
+ return fromStream(name);
+ }
+
+ @Override
+ public <T> Publisher<T> from(String name, Class<T> type) {
+ final Publisher<Exchange> publisher = from(name);
+
+ if (Exchange.class.isAssignableFrom(type)) {
+ return Publisher.class.cast(publisher);
+ }
+
+ return
Flowable.fromPublisher(publisher).map(BodyConverter.forType(type)::apply);
+ }
+
+ @Override
+ public Subscriber<Exchange> subscriber(String uri) {
+ try {
+ String uuid = context.getUuidGenerator().generateUuid();
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:" + uuid)
+ .to(uri);
+ }
+ });
+
+ return streamSubscriber(uuid);
+ } catch (Exception e) {
+ throw new IllegalStateException("Unable to create source reactive
stream towards direct URI: " + uri, e);
+ }
+ }
+
+ @Override
+ public <T> Subscriber<T> subscriber(String uri, Class<T> type) {
+ return new ConvertingSubscriber<>(subscriber(uri), context);
+ }
+
+ @Override
+ public Publisher<Exchange> to(String uri, Object data) {
+ String streamName = requestedUriToStream.computeIfAbsent(uri, camelUri
-> {
+ try {
+ String uuid = context.getUuidGenerator().generateUuid();
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:" + uuid)
+ .to(camelUri);
+ }
+ });
+
+ return uuid;
+ } catch (Exception e) {
+ throw new IllegalStateException("Unable to create requested
reactive stream from direct URI: " + uri, e);
+ }
+ });
+
+ return toStream(streamName, data);
+ }
+
+ @Override
+ public Function<Object, Publisher<Exchange>> to(String uri) {
+ return data -> to(uri, data);
+ }
+
+ @Override
+ public <T> Publisher<T> to(String uri, Object data, Class<T> type) {
+ Publisher<Exchange> publisher = to(uri, data);
+
+ return
Flowable.fromPublisher(publisher).map(BodyConverter.forType(type)::apply);
+ }
+
+ @Override
+ public <T> Function<Object, Publisher<T>> to(String uri, Class<T> type) {
+ return data -> to(uri, data, type);
+ }
+
+ @Override
+ public void process(String uri, Function<? super Publisher<Exchange>, ?>
processor) {
+ try {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from(uri)
+ .process(exchange -> {
+ Exchange copy = exchange.copy();
+ Object result =
processor.apply(Flowable.just(copy));
+ exchange.getIn().setBody(result);
+ })
+ .process(unwrapStreamProcessorSupplier.get());
+ }
+ });
+ } catch (Exception e) {
+ throw new IllegalStateException("Unable to add reactive stream
processor to the direct URI: " + uri, e);
+ }
+ }
+
+ @Override
+ public <T> void process(String uri, Class<T> type, Function<? super
Publisher<T>, ?> processor) {
+ process(
+ uri,
+ publisher -> processor.apply(
+
Flowable.fromPublisher(publisher).map(BodyConverter.forType(type)::apply)
+ )
+ );
+ }
+
+ // ******************************************
+ // Producer
+ // ******************************************
+
+ @Override
+ public void attachCamelProducer(String name, ReactiveStreamsProducer
producer) {
+ getCamelProcessor(name).attach(producer);
+ }
+
+ @Override
+ public void detachCamelProducer(String name) {
+ getCamelProcessor(name).detach();
+ }
+
+ @Override
+ public void sendCamelExchange(String name, Exchange exchange) {
+ getCamelProcessor(name).send(exchange);
+ }
+
+ private RxJavaCamelProcessor getCamelProcessor(String name) {
+ return publishers.computeIfAbsent(name, key -> new
RxJavaCamelProcessor(this, key));
+ }
+
+ // ******************************************
+ // Consumer
+ // ******************************************
+
+ @Override
+ public ReactiveStreamsCamelSubscriber attachCamelConsumer(String name,
ReactiveStreamsConsumer consumer) {
+ ReactiveStreamsCamelSubscriber subscriber = streamSubscriber(name);
+ subscriber.attachConsumer(consumer);
+
+ return subscriber;
+ }
+
+ @Override
+ public void detachCamelConsumer(String name) {
+ ReactiveStreamsCamelSubscriber subscriber = streamSubscriber(name);
+ subscriber.detachConsumer();
+ }
+
+ // *******************************************
+ // Helpers
+ // *******************************************
+
+ protected Publisher<Exchange> doRequest(String name, Exchange data) {
+ ReactiveStreamsConsumer consumer =
streamSubscriber(name).getConsumer();
+ if (consumer == null) {
+ throw new IllegalStateException("No consumers attached to the
stream " + name);
+ }
+
+ Single<Exchange> source = Single.<Exchange>create(
+ emitter -> data.addOnCompletion(new Synchronization() {
+ @Override
+ public void onComplete(Exchange exchange) {
+ emitter.onSuccess(exchange);
+ }
+
+ @Override
+ public void onFailure(Exchange exchange) {
+ Throwable throwable = exchange.getException();
+ if (throwable == null) {
+ throwable = new IllegalStateException("Unknown
Exception");
+ }
+
+ emitter.onError(throwable);
+ }
+ })
+ ).doOnSubscribe(
+ subs -> consumer.process(data,
RxJavaStreamsConstants.EMPTY_ASYNC_CALLBACK)
+ );
+
+ return source.toFlowable();
+ }
+}
diff --git
a/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceFactory.java
b/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceFactory.java
new file mode 100644
index 00000000000..2f0b11be83e
--- /dev/null
+++
b/components/camel-rxjava2/src/main/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceFactory.java
@@ -0,0 +1,29 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import org.apache.camel.CamelContext;
+import
org.apache.camel.component.reactive.streams.api.CamelReactiveStreamsService;
+import
org.apache.camel.component.reactive.streams.api.CamelReactiveStreamsServiceFactory;
+import
org.apache.camel.component.reactive.streams.engine.ReactiveStreamsEngineConfiguration;
+
+public class RxJavaStreamsServiceFactory implements
CamelReactiveStreamsServiceFactory {
+ @Override
+ public CamelReactiveStreamsService newInstance(CamelContext context,
ReactiveStreamsEngineConfiguration configuration) {
+ return new RxJavaStreamsService(context);
+ }
+}
diff --git a/components/camel-rxjava2/src/main/resources/META-INF/LICENSE.txt
b/components/camel-rxjava2/src/main/resources/META-INF/LICENSE.txt
new file mode 100644
index 00000000000..6b0b1270ff0
--- /dev/null
+++ b/components/camel-rxjava2/src/main/resources/META-INF/LICENSE.txt
@@ -0,0 +1,203 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
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+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
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+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright [yyyy] [name of copyright owner]
+
+ 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.
+
diff --git a/components/camel-rxjava2/src/main/resources/META-INF/NOTICE.txt
b/components/camel-rxjava2/src/main/resources/META-INF/NOTICE.txt
new file mode 100644
index 00000000000..2e215bf2e6b
--- /dev/null
+++ b/components/camel-rxjava2/src/main/resources/META-INF/NOTICE.txt
@@ -0,0 +1,11 @@
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for the Apache Camel distribution. ==
+ =========================================================================
+
+ This product includes software developed by
+ The Apache Software Foundation (http://www.apache.org/).
+
+ Please read the different LICENSE files present in the licenses directory of
+ this distribution.
diff --git
a/components/camel-rxjava2/src/main/resources/META-INF/services/org/apache/camel/reactive-streams/rxjava2
b/components/camel-rxjava2/src/main/resources/META-INF/services/org/apache/camel/reactive-streams/rxjava2
new file mode 100644
index 00000000000..8003909e805
--- /dev/null
+++
b/components/camel-rxjava2/src/main/resources/META-INF/services/org/apache/camel/reactive-streams/rxjava2
@@ -0,0 +1,17 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+class=org.apache.camel.component.rxjava2.engine.RxJavaStreamsServiceFactory
\ No newline at end of file
diff --git
a/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceBackpressureTest.java
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceBackpressureTest.java
new file mode 100644
index 00000000000..38a6fc38e93
--- /dev/null
+++
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceBackpressureTest.java
@@ -0,0 +1,165 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import io.reactivex.Flowable;
+import org.apache.camel.Exchange;
+import org.apache.camel.builder.RouteBuilder;
+import
org.apache.camel.component.reactive.streams.ReactiveStreamsBackpressureStrategy;
+import org.apache.camel.component.rxjava2.engine.suport.TestSubscriber;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class RxJavaStreamsServiceBackpressureTest extends
RxJavaStreamsServiceTestSupport {
+
+ @Test
+ public void testBufferStrategy() throws Exception {
+
getReactiveStreamsComponent().setBackpressureStrategy(ReactiveStreamsBackpressureStrategy.BUFFER);
+
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("timer:gen?period=20&repeatCount=20")
+ .setBody()
+ .header(Exchange.TIMER_COUNTER)
+ .to("reactive-streams:integers");
+ }
+ });
+
+ Flowable<Integer> integers =
Flowable.fromPublisher(crs.fromStream("integers", Integer.class));
+ ConcurrentLinkedQueue<Integer> queue = new ConcurrentLinkedQueue<>();
+ CountDownLatch latch = new CountDownLatch(1);
+
+ Flowable.range(0, 50)
+ .zipWith(integers, (l, i) -> i)
+ .timeout(2000, TimeUnit.MILLISECONDS, Flowable.empty())
+ .doOnComplete(latch::countDown)
+ .subscribe(queue::add);
+
+ context.start();
+
+ Assert.assertTrue(latch.await(5, TimeUnit.SECONDS));
+ Assert.assertEquals(20, queue.size());
+
+ int num = 1;
+ for (int i : queue) {
+ Assert.assertEquals(num++, i);
+ }
+ }
+
+ @Test
+ public void testDropStrategy() throws Exception {
+
getReactiveStreamsComponent().setBackpressureStrategy(ReactiveStreamsBackpressureStrategy.OLDEST);
+
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("timer:gen?period=20&repeatCount=20")
+ .setBody()
+ .header(Exchange.TIMER_COUNTER)
+ .to("reactive-streams:integers");
+ }
+ });
+
+ final ConcurrentLinkedQueue<Integer> queue = new
ConcurrentLinkedQueue<>();
+ final CountDownLatch latch = new CountDownLatch(1);
+ final CountDownLatch latch2 = new CountDownLatch(2);
+
+ TestSubscriber<Integer> subscriber = new TestSubscriber<Integer>() {
+ @Override
+ public void onNext(Integer o) {
+ queue.add(o);
+ latch.countDown();
+ latch2.countDown();
+ }
+ };
+
+ subscriber.setInitiallyRequested(1);
+
+ crs.fromStream("integers", Integer.class).subscribe(subscriber);
+ context.start();
+
+ Assert.assertTrue(latch.await(5, TimeUnit.SECONDS));
+ Thread.sleep(1000); // wait for all numbers to be generated
+
+ subscriber.request(19);
+ Assert.assertTrue(latch2.await(1, TimeUnit.SECONDS));
+
+ Thread.sleep(200); // add other time to ensure no other items arrive
+ Assert.assertEquals(2, queue.size());
+
+ int sum = queue.stream().reduce((i, j) -> i + j).get();
+ Assert.assertEquals(3, sum); // 1 + 2 = 3
+
+ subscriber.cancel();
+ }
+
+ @Test
+ public void testLatestStrategy() throws Exception {
+
getReactiveStreamsComponent().setBackpressureStrategy(ReactiveStreamsBackpressureStrategy.LATEST);
+
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("timer:gen?period=20&repeatCount=20")
+ .setBody()
+ .header(Exchange.TIMER_COUNTER)
+ .to("reactive-streams:integers");
+ }
+ });
+
+ final ConcurrentLinkedQueue<Integer> queue = new
ConcurrentLinkedQueue<>();
+ final CountDownLatch latch1 = new CountDownLatch(1);
+ final CountDownLatch latch2 = new CountDownLatch(2);
+
+ TestSubscriber<Integer> subscriber = new TestSubscriber<Integer>() {
+ @Override
+ public void onNext(Integer o) {
+ queue.add(o);
+ latch1.countDown();
+ latch2.countDown();
+ }
+ };
+
+ subscriber.setInitiallyRequested(1);
+
+ crs.fromStream("integers", Integer.class).subscribe(subscriber);
+ context.start();
+
+ Assert.assertTrue(latch1.await(5, TimeUnit.SECONDS));
+ Thread.sleep(1000); // wait for all numbers to be generated
+
+ subscriber.request(19);
+ Assert.assertTrue(latch2.await(1, TimeUnit.SECONDS));
+
+ Thread.sleep(200); // add other time to ensure no other items arrive
+
+ // TODO: the chain caches two elements instead of one: change it if
you find an EmitterProcessor without prefetch
+ // Assert.assertEquals(2, queue.size());
+ Assert.assertEquals(3, queue.size());
+
+ int sum = queue.stream().reduce((i, j) -> i + j).get();
+ // Assert.assertEquals(21, sum); // 1 + 20 = 21
+ Assert.assertEquals(23, sum); // 1 + 2 + 20 = 23
+
+ subscriber.cancel();
+ }
+}
diff --git
a/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceEventTypeTest.java
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceEventTypeTest.java
new file mode 100644
index 00000000000..b3f4bb4a8f7
--- /dev/null
+++
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceEventTypeTest.java
@@ -0,0 +1,164 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import io.reactivex.Flowable;
+import org.apache.camel.Exchange;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.component.mock.MockEndpoint;
+import org.apache.camel.component.reactive.streams.ReactiveStreamsConstants;
+import org.junit.Assert;
+import org.junit.Test;
+import org.reactivestreams.Subscriber;
+
+public class RxJavaStreamsServiceEventTypeTest extends
RxJavaStreamsServiceTestSupport {
+
+ @Test
+ public void testOnCompleteHeaderForwarded() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:numbers?forwardOnComplete=true")
+ .to("mock:endpoint");
+ }
+ });
+
+ Subscriber<Integer> numbers = crs.streamSubscriber("numbers",
Integer.class);
+
+ context.start();
+
+ Flowable.<Integer>empty().subscribe(numbers);
+
+ MockEndpoint endpoint = getMockEndpoint("mock:endpoint");
+ endpoint.expectedMessageCount(1);
+
endpoint.expectedHeaderReceived(ReactiveStreamsConstants.REACTIVE_STREAMS_EVENT_TYPE,
"onComplete");
+ endpoint.expectedBodiesReceived(new Object[]{null});
+ endpoint.assertIsSatisfied();
+ }
+
+ @Test
+ public void testOnCompleteHeaderNotForwarded() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:numbers")
+ .to("mock:endpoint");
+ }
+ });
+
+ Subscriber<Integer> numbers = crs.streamSubscriber("numbers",
Integer.class);
+
+ context.start();
+
+ Flowable.<Integer>empty().subscribe(numbers);
+
+ MockEndpoint endpoint = getMockEndpoint("mock:endpoint");
+ endpoint.expectedMessageCount(0);
+ endpoint.assertIsSatisfied(200);
+ }
+
+ @Test
+ public void testOnNextHeaderForwarded() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:numbers")
+ .to("mock:endpoint");
+ }
+ });
+
+ Subscriber<Integer> numbers = crs.streamSubscriber("numbers",
Integer.class);
+
+ context.start();
+
+ Flowable.just(1).subscribe(numbers);
+
+ MockEndpoint endpoint = getMockEndpoint("mock:endpoint");
+
endpoint.expectedHeaderReceived(ReactiveStreamsConstants.REACTIVE_STREAMS_EVENT_TYPE,
"onNext");
+ endpoint.expectedMessageCount(1);
+ endpoint.assertIsSatisfied();
+
+ Exchange ex = endpoint.getExchanges().get(0);
+ Assert.assertEquals(1, ex.getIn().getBody());
+ }
+
+ @Test
+ public void testOnErrorHeaderForwarded() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:numbers?forwardOnError=true")
+ .to("mock:endpoint");
+ }
+ });
+
+ Subscriber<Integer> numbers = crs.streamSubscriber("numbers",
Integer.class);
+
+ context.start();
+
+ RuntimeException ex = new RuntimeException("1");
+
+ Flowable.just(1)
+ .map(n -> {
+ if (n == 1) {
+ throw ex;
+ }
+ return n;
+ })
+ .subscribe(numbers);
+
+
+ MockEndpoint endpoint = getMockEndpoint("mock:endpoint");
+ endpoint.expectedMessageCount(1);
+
endpoint.expectedHeaderReceived(ReactiveStreamsConstants.REACTIVE_STREAMS_EVENT_TYPE,
"onError");
+ endpoint.assertIsSatisfied();
+
+ Exchange exch = endpoint.getExchanges().get(0);
+ Assert.assertEquals(ex, exch.getIn().getBody());
+ }
+
+ @Test
+ public void testOnErrorHeaderNotForwarded() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:numbers")
+ .to("mock:endpoint");
+ }
+ });
+
+ Subscriber<Integer> numbers = crs.streamSubscriber("numbers",
Integer.class);
+
+ context.start();
+
+ RuntimeException ex = new RuntimeException("1");
+
+ Flowable.just(1)
+ .map(n -> {
+ if (n == 1) {
+ throw ex;
+ }
+ return n;
+ })
+ .subscribe(numbers);
+
+
+ MockEndpoint endpoint = getMockEndpoint("mock:endpoint");
+ endpoint.expectedMessageCount(0);
+ endpoint.assertIsSatisfied(200);
+ }
+}
diff --git
a/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceSubscriberTest.java
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceSubscriberTest.java
new file mode 100644
index 00000000000..8c9632a26d2
--- /dev/null
+++
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceSubscriberTest.java
@@ -0,0 +1,151 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+import io.reactivex.Flowable;
+import org.apache.camel.Exchange;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.component.mock.MockEndpoint;
+import org.junit.Assert;
+import org.junit.Test;
+import org.reactivestreams.Publisher;
+import org.reactivestreams.Subscriber;
+
+public class RxJavaStreamsServiceSubscriberTest extends
RxJavaStreamsServiceTestSupport {
+
+ @Test
+ public void testSubscriber() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:sub1")
+ .to("mock:sub1");
+ from("reactive-streams:sub2")
+ .to("mock:sub2");
+ from("timer:tick?period=50")
+ .setBody()
+ .simple("random(500)")
+ .to("mock:sub3")
+ .to("reactive-streams:pub");
+ }
+ });
+
+ Subscriber<Integer> sub1 = crs.streamSubscriber("sub1", Integer.class);
+ Subscriber<Integer> sub2 = crs.streamSubscriber("sub2", Integer.class);
+ Publisher<Integer> pub = crs.fromStream("pub", Integer.class);
+
+ pub.subscribe(sub1);
+ pub.subscribe(sub2);
+
+ context.start();
+
+ int count = 2;
+
+ MockEndpoint e1 = getMockEndpoint("mock:sub1");
+ e1.expectedMinimumMessageCount(count);
+ e1.assertIsSatisfied();
+
+ MockEndpoint e2 = getMockEndpoint("mock:sub2");
+ e2.expectedMinimumMessageCount(count);
+ e2.assertIsSatisfied();
+
+ MockEndpoint e3 = getMockEndpoint("mock:sub3");
+ e3.expectedMinimumMessageCount(count);
+ e3.assertIsSatisfied();
+
+ for (int i = 0; i < count; i++) {
+ Exchange ex1 = e1.getExchanges().get(i);
+ Exchange ex2 = e2.getExchanges().get(i);
+ Exchange ex3 = e3.getExchanges().get(i);
+
+ assertEquals(ex1.getIn().getBody(), ex2.getIn().getBody());
+ assertEquals(ex1.getIn().getBody(), ex3.getIn().getBody());
+ }
+ }
+
+ @Test
+ public void testSingleConsumer() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("reactive-streams:singleConsumer")
+ .process()
+ .message(m -> m.setHeader("thread",
Thread.currentThread().getId()))
+ .to("mock:singleBucket");
+ }
+ });
+
+ context.start();
+
+ Flowable.range(0, 1000).subscribe(
+ crs.streamSubscriber("singleConsumer", Number.class)
+ );
+
+ MockEndpoint endpoint = getMockEndpoint("mock:singleBucket");
+ endpoint.expectedMessageCount(1000);
+ endpoint.assertIsSatisfied();
+
+ Assert.assertEquals(
+ 1,
+ endpoint.getExchanges().stream()
+ .map(x -> x.getIn().getHeader("thread", String.class))
+ .distinct()
+ .count()
+ );
+
+ // Ensure order is preserved when using a single consumer
+ AtomicLong num = new AtomicLong(0);
+
+ endpoint.getExchanges().stream()
+ .map(x -> x.getIn().getBody(Long.class))
+ .forEach(n -> Assert.assertEquals(num.getAndIncrement(),
n.longValue()));
+ }
+
+ @Test
+ public void testMultipleConsumers() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+
from("reactive-streams:multipleConsumers?concurrentConsumers=3")
+ .process()
+ .message(m -> m.setHeader("thread",
Thread.currentThread().getId()))
+ .to("mock:multipleBucket");
+ }
+ });
+
+ context.start();
+
+ Flowable.range(0, 1000).subscribe(
+ crs.streamSubscriber("multipleConsumers", Number.class)
+ );
+
+ MockEndpoint endpoint = getMockEndpoint("mock:multipleBucket");
+ endpoint.expectedMessageCount(1000);
+ endpoint.assertIsSatisfied();
+
+ Assert.assertEquals(
+ 3,
+ endpoint.getExchanges().stream()
+ .map(x -> x.getIn().getHeader("thread", String.class))
+ .distinct()
+ .count()
+ );
+ // Order cannot be preserved when using multiple consumers
+ }
+}
diff --git
a/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceTest.java
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceTest.java
new file mode 100644
index 00000000000..71fee035d76
--- /dev/null
+++
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceTest.java
@@ -0,0 +1,402 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Function;
+
+import io.reactivex.Flowable;
+import io.reactivex.disposables.Disposable;
+import org.apache.camel.Exchange;
+import org.apache.camel.ProducerTemplate;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.component.mock.MockEndpoint;
+import org.apache.camel.impl.DefaultExchange;
+import org.apache.camel.impl.JndiRegistry;
+import org.apache.camel.util.ExchangeHelper;
+import org.junit.Assert;
+import org.junit.Test;
+import org.reactivestreams.Publisher;
+
+public class RxJavaStreamsServiceTest extends RxJavaStreamsServiceTestSupport {
+
+ // ************************************************
+ // Setup
+ // ************************************************
+
+ @Override
+ protected JndiRegistry createRegistry() throws Exception {
+ JndiRegistry registry = super.createRegistry();
+ registry.bind("hello", new SampleBean());
+
+ return registry;
+ }
+
+ public static class SampleBean {
+ public String hello(String name) {
+ return "Hello " + name;
+ }
+ }
+
+ // ************************************************
+ // fromStream/from
+ // ************************************************
+
+ @Test
+ public void testFromStreamDirect() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ public void configure() {
+ from("direct:reactive")
+ .to("reactive-streams:numbers");
+ }
+ });
+
+ context.start();
+ ProducerTemplate template = context.createProducerTemplate();
+
+ AtomicInteger value = new AtomicInteger(0);
+
+ Flowable.fromPublisher(crs.fromStream("numbers", Integer.class))
+ .doOnNext(res -> Assert.assertEquals(value.incrementAndGet(),
res.intValue()))
+ .subscribe();
+
+ template.sendBody("direct:reactive", 1);
+ template.sendBody("direct:reactive", 2);
+ template.sendBody("direct:reactive", 3);
+ }
+
+ @Test
+ public void testFromStreamTimer() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("timer:tick?period=5&repeatCount=30")
+ .setBody()
+ .header(Exchange.TIMER_COUNTER)
+ .to("reactive-streams:tick");
+ }
+ });
+
+ final int num = 30;
+ final CountDownLatch latch = new CountDownLatch(num);
+ final AtomicInteger value = new AtomicInteger(0);
+
+ Flowable.fromPublisher(crs.fromStream("tick", Integer.class))
+ .doOnNext(res -> Assert.assertEquals(value.incrementAndGet(),
res.intValue()))
+ .doOnNext(n -> latch.countDown())
+ .subscribe();
+
+ context.start();
+
+ latch.await(5, TimeUnit.SECONDS);
+
+ Assert.assertEquals(num, value.get());
+ }
+
+ @Test
+ public void testFromStreamMultipleSubscriptionsWithDirect() throws
Exception {
+ context.start();
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:reactive")
+ .to("reactive-streams:direct");
+ }
+ });
+
+ CountDownLatch latch1 = new CountDownLatch(2);
+ Flowable.fromPublisher(crs.fromStream("direct", Integer.class))
+ .doOnNext(res -> latch1.countDown())
+ .subscribe();
+
+ CountDownLatch latch2 = new CountDownLatch(2);
+ Flowable.fromPublisher(crs.fromStream("direct", Integer.class))
+ .doOnNext(res -> latch2.countDown())
+ .subscribe();
+
+ template.sendBody("direct:reactive", 1);
+ template.sendBody("direct:reactive", 2);
+
+ Assert.assertTrue(latch1.await(5, TimeUnit.SECONDS));
+ Assert.assertTrue(latch2.await(5, TimeUnit.SECONDS));
+ }
+
+ @Test
+ public void testMultipleSubscriptionsWithTimer() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("timer:tick?period=50")
+ .setBody().header(Exchange.TIMER_COUNTER)
+ .to("reactive-streams:tick");
+ }
+ });
+
+ CountDownLatch latch1 = new CountDownLatch(5);
+ Disposable disp1 = Flowable.fromPublisher(crs.fromStream("tick",
Integer.class)).subscribe(res -> latch1.countDown());
+
+ context.start();
+
+ // Add another subscription
+ CountDownLatch latch2 = new CountDownLatch(5);
+ Disposable disp2 = Flowable.fromPublisher(crs.fromStream("tick",
Integer.class)).subscribe(res -> latch2.countDown());
+
+ assertTrue(latch1.await(5, TimeUnit.SECONDS));
+ assertTrue(latch2.await(5, TimeUnit.SECONDS));
+
+ // Un subscribe both
+ disp1.dispose();
+ disp2.dispose();
+
+ // No active subscriptions, warnings expected
+ Thread.sleep(60);
+
+ // Add another subscription
+ CountDownLatch latch3 = new CountDownLatch(5);
+ Disposable disp3 = Flowable.fromPublisher(crs.fromStream("tick",
Integer.class)).subscribe(res -> latch3.countDown());
+
+ assertTrue(latch3.await(5, TimeUnit.SECONDS));
+ disp3.dispose();
+ }
+
+ @Test
+ public void testFrom() throws Exception {
+ context.start();
+
+ Publisher<Exchange> timer =
crs.from("timer:reactive?period=250&repeatCount=3");
+
+ AtomicInteger value = new AtomicInteger(0);
+ CountDownLatch latch = new CountDownLatch(3);
+
+ Flowable.fromPublisher(timer)
+ .map(exchange -> ExchangeHelper.getHeaderOrProperty(exchange,
Exchange.TIMER_COUNTER, Integer.class))
+ .doOnNext(res -> Assert.assertEquals(value.incrementAndGet(),
res.intValue()))
+ .doOnNext(res -> latch.countDown())
+ .subscribe();
+
+ Assert.assertTrue(latch.await(2, TimeUnit.SECONDS));
+ }
+
+ // ************************************************
+ // fromPublisher
+ // ************************************************
+
+ @Test
+ public void testFromPublisher() throws Exception {
+ context.start();
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:source")
+ .to("direct:stream")
+ .setBody()
+ .simple("after stream: ${body}");
+ }
+ });
+
+ crs.process("direct:stream",
+ publisher ->
+ Flowable.fromPublisher(publisher)
+ .map(e -> {
+ int i = e.getIn().getBody(Integer.class);
+ e.getOut().setBody(-i);
+
+ return e;
+ }
+ )
+ );
+
+ for (int i = 1; i <= 3; i++) {
+ Assert.assertEquals(
+ "after stream: " + (-i),
+ template.requestBody("direct:source", i, String.class)
+ );
+ }
+ }
+
+ @Test
+ public void testFromPublisherWithConversion() throws Exception {
+ context.start();
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:source")
+ .to("direct:stream")
+ .setBody()
+ .simple("after stream: ${body}");
+ }
+ });
+
+ crs.process("direct:stream",
+ Integer.class,
+ publisher ->
+ Flowable.fromPublisher(publisher).map(Math::negateExact)
+ );
+
+ for (int i = 1; i <= 3; i++) {
+ Assert.assertEquals(
+ "after stream: " + (-i),
+ template.requestBody("direct:source", i, String.class)
+ );
+ }
+ }
+
+ // ************************************************
+ // toStream/to
+ // ************************************************
+
+ @Test
+ public void testToStream() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ public void configure() {
+ from("reactive-streams:reactive")
+ .setBody().constant("123");
+ }
+ });
+
+ context.start();
+
+ Publisher<Exchange> publisher = crs.toStream("reactive", new
DefaultExchange(context));
+ Exchange res = Flowable.fromPublisher(publisher).blockingFirst();
+
+ Assert.assertNotNull(res);
+
+ String content = res.getIn().getBody(String.class);
+
+ Assert.assertNotNull(content);
+ Assert.assertEquals("123", content);
+ }
+
+ @Test
+ public void testTo() throws Exception {
+ context.start();
+
+ AtomicInteger value = new AtomicInteger(0);
+ CountDownLatch latch = new CountDownLatch(1);
+
+ Flowable.just(1, 2, 3)
+ .flatMap(e -> crs.to("bean:hello", e, String.class))
+ .doOnNext(res -> Assert.assertEquals("Hello " +
value.incrementAndGet(), res))
+ .doOnNext(res -> latch.countDown())
+ .subscribe();
+
+ Assert.assertTrue(latch.await(2, TimeUnit.SECONDS));
+ }
+
+ @Test
+ public void testToWithExchange() throws Exception {
+ context.start();
+
+ AtomicInteger value = new AtomicInteger(0);
+ CountDownLatch latch = new CountDownLatch(1);
+
+ Flowable.just(1, 2, 3)
+ .flatMap(e -> crs.to("bean:hello", e))
+ .map(e -> e.getOut())
+ .map(e -> e.getBody(String.class))
+ .doOnNext(res -> Assert.assertEquals("Hello " +
value.incrementAndGet(), res))
+ .doOnNext(res -> latch.countDown())
+ .subscribe();
+
+ Assert.assertTrue(latch.await(2, TimeUnit.SECONDS));
+ }
+
+ @Test
+ public void testToFunction() throws Exception {
+ context.start();
+
+ AtomicInteger value = new AtomicInteger(0);
+ CountDownLatch latch = new CountDownLatch(1);
+ Function<Object, Publisher<String>> fun = crs.to("bean:hello",
String.class);
+
+ Flowable.just(1, 2, 3)
+ .flatMap(fun::apply)
+ .doOnNext(res -> Assert.assertEquals("Hello " +
value.incrementAndGet(), res))
+ .doOnNext(res -> latch.countDown())
+ .subscribe();
+
+ Assert.assertTrue(latch.await(2, TimeUnit.SECONDS));
+ }
+
+ @Test
+ public void testToFunctionWithExchange() throws Exception {
+ context.start();
+
+ AtomicInteger value = new AtomicInteger(0);
+ CountDownLatch latch = new CountDownLatch(1);
+ Function<Object, Publisher<Exchange>> fun = crs.to("bean:hello");
+
+ Flowable.just(1, 2, 3)
+ .flatMap(fun::apply)
+ .map(e -> e.getOut())
+ .map(e -> e.getBody(String.class))
+ .doOnNext(res -> Assert.assertEquals("Hello " +
value.incrementAndGet(), res))
+ .doOnNext(res -> latch.countDown())
+ .subscribe();
+
+ Assert.assertTrue(latch.await(2, TimeUnit.SECONDS));
+ }
+
+ // ************************************************
+ // subscriber
+ // ************************************************
+
+ @Test
+ public void testSubscriber() throws Exception {
+ context.start();
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:reactor")
+ .to("mock:result");
+ }
+ });
+
+ Flowable.just(1, 2, 3)
+ .subscribe(crs.subscriber("direct:reactor", Integer.class));
+
+ MockEndpoint mock = getMockEndpoint("mock:result");
+ mock.expectedMessageCount(3);
+ mock.assertIsSatisfied();
+
+ int idx = 1;
+ for (Exchange ex : mock.getExchanges()) {
+ Assert.assertEquals(new Integer(idx++),
ex.getIn().getBody(Integer.class));
+ }
+ }
+
+ // ************************************************
+ // misc
+ // ************************************************
+
+ @Test(expected = IllegalStateException.class)
+ public void testOnlyOneCamelProducerPerPublisher() throws Exception {
+ context.addRoutes(new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:one")
+ .to("reactive-streams:stream");
+ from("direct:two")
+ .to("reactive-streams:stream");
+ }
+ });
+
+ context.start();
+ }
+}
diff --git
a/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceTestSupport.java
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceTestSupport.java
new file mode 100644
index 00000000000..4ce1dd23541
--- /dev/null
+++
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/RxJavaStreamsServiceTestSupport.java
@@ -0,0 +1,59 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.component.reactive.streams.ReactiveStreamsComponent;
+import org.apache.camel.component.reactive.streams.ReactiveStreamsConstants;
+import org.apache.camel.component.reactive.streams.api.CamelReactiveStreams;
+import
org.apache.camel.component.reactive.streams.api.CamelReactiveStreamsService;
+import org.apache.camel.test.junit4.CamelTestSupport;
+import org.apache.camel.util.ObjectHelper;
+
+class RxJavaStreamsServiceTestSupport extends CamelTestSupport {
+ protected CamelReactiveStreamsService crs;
+
+ @Override
+ protected CamelContext createCamelContext() throws Exception {
+ CamelContext context = super.createCamelContext();
+
+ context.addComponent(
+ ReactiveStreamsConstants.SCHEME,
+
ReactiveStreamsComponent.withServiceType(RxJavaStreamsConstants.SERVICE_NAME)
+ );
+
+ return context;
+ }
+
+ @Override
+ protected void doPostSetup() throws Exception {
+ this.crs = CamelReactiveStreams.get(context);
+ }
+
+ @Override
+ public boolean isUseRouteBuilder() {
+ // You need to start the context if "use route builder" is set to false
+ return false;
+ }
+
+ protected ReactiveStreamsComponent getReactiveStreamsComponent() {
+ return ObjectHelper.notNull(
+ context.getComponent(ReactiveStreamsConstants.SCHEME,
ReactiveStreamsComponent.class),
+ ReactiveStreamsConstants.SCHEME
+ );
+ }
+}
diff --git
a/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/suport/TestSubscriber.java
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/suport/TestSubscriber.java
new file mode 100644
index 00000000000..a50eac9b898
--- /dev/null
+++
b/components/camel-rxjava2/src/test/java/org/apache/camel/component/rxjava2/engine/suport/TestSubscriber.java
@@ -0,0 +1,73 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.component.rxjava2.engine.suport;
+
+import org.reactivestreams.Subscriber;
+import org.reactivestreams.Subscription;
+
+/**
+ * A subscriber for tests.
+ */
+public class TestSubscriber<T> implements Subscriber<T> {
+
+ protected Subscription subscription;
+
+ private long initiallyRequested;
+
+ public TestSubscriber() {
+ }
+
+ public long getInitiallyRequested() {
+ return initiallyRequested;
+ }
+
+ public void setInitiallyRequested(long initiallyRequested) {
+ this.initiallyRequested = initiallyRequested;
+ }
+
+ public void request(long exchanges) {
+ this.subscription.request(exchanges);
+ }
+
+ public void cancel() {
+ this.subscription.cancel();
+ }
+
+ @Override
+ public void onSubscribe(Subscription subscription) {
+ this.subscription = subscription;
+
+ if (initiallyRequested > 0) {
+ subscription.request(initiallyRequested);
+ }
+ }
+
+ @Override
+ public void onNext(T t) {
+
+ }
+
+ @Override
+ public void onError(Throwable throwable) {
+
+ }
+
+ @Override
+ public void onComplete() {
+
+ }
+}
diff --git a/components/camel-rxjava2/src/test/resources/log4j2.properties
b/components/camel-rxjava2/src/test/resources/log4j2.properties
new file mode 100644
index 00000000000..6510773060a
--- /dev/null
+++ b/components/camel-rxjava2/src/test/resources/log4j2.properties
@@ -0,0 +1,33 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements. See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You 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.
+## ---------------------------------------------------------------------------
+
+appender.file.type = File
+appender.file.name = file
+appender.file.fileName = target/camel-rxjava2-test.log
+appender.file.layout.type = PatternLayout
+appender.file.layout.pattern = %d [%-15.15t] %-5p %-30.30c{1} - %m%n
+appender.stdout.type = Console
+appender.stdout.name = stdout
+appender.stdout.layout.type = PatternLayout
+appender.stdout.layout.pattern = %d [%-15.15t] %-5p %-30.30c{1} - %m%n
+rootLogger.level = INFO
+rootLogger.appenderRef.file.ref = file
+
+#rootLogger.appenderRef.stdout.ref = stdout
+#logger.debug.name = org.apache.camel.component.reactive.streams
+#logger.debug.level = DEBUG
+#logger.debug.additivity = true
diff --git a/components/pom.xml b/components/pom.xml
index 74b4e4c276f..485a8d862ff 100644
--- a/components/pom.xml
+++ b/components/pom.xml
@@ -251,6 +251,7 @@
<module>camel-rss</module>
<module>camel-ruby</module>
<module>camel-rx</module>
+ <module>camel-rxjava2</module>
<module>camel-sap-netweaver</module>
<module>camel-saxon</module>
<module>camel-salesforce</module>
diff --git a/parent/pom.xml b/parent/pom.xml
index e9fb482e9de..f053bb33296 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -598,6 +598,7 @@
<rome-version>1.0</rome-version>
<rxjava-version>1.3.8</rxjava-version>
<rxjava2-version>2.1.13</rxjava2-version>
+ <rxjava2-extensions-version>0.19.0</rxjava2-extensions-version>
<saaj-impl-version>1.3.2_2</saaj-impl-version>
<saxon-bundle-version>9.8.0-10_1</saxon-bundle-version>
<saxon-version>9.8.0-10</saxon-version>
@@ -1819,6 +1820,11 @@
<artifactId>camel-reactor</artifactId>
<version>${project.version}</version>
</dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2</artifactId>
+ <version>${project.version}</version>
+ </dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-rest-swagger</artifactId>
@@ -3258,6 +3264,11 @@
<artifactId>camel-reactor-starter</artifactId>
<version>${project.version}</version>
</dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2-starter</artifactId>
+ <version>${project.version}</version>
+ </dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-rest-swagger-starter</artifactId>
diff --git
a/platforms/spring-boot/components-starter/camel-rxjava2-starter/pom.xml
b/platforms/spring-boot/components-starter/camel-rxjava2-starter/pom.xml
new file mode 100644
index 00000000000..8eb528ef45f
--- /dev/null
+++ b/platforms/spring-boot/components-starter/camel-rxjava2-starter/pom.xml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+ Licensed to the Apache Software Foundation (ASF) under one or more
+ contributor license agreements. See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The ASF licenses this file to You 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.
+
+-->
+<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/maven-v4_0_0.xsd";>
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>components-starter</artifactId>
+ <version>2.22.0-SNAPSHOT</version>
+ </parent>
+ <artifactId>camel-rxjava2-starter</artifactId>
+ <packaging>jar</packaging>
+ <name>Spring-Boot Starter :: Camel :: RxJava2</name>
+ <description>Spring-Boot Starter for RxJava2 based back-end for Camel's
reactive streams component</description>
+ <dependencies>
+ <dependency>
+ <groupId>org.springframework.boot</groupId>
+ <artifactId>spring-boot-starter</artifactId>
+ <version>${spring-boot-version}</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2</artifactId>
+ <version>${project.version}</version>
+ </dependency>
+ <!--START OF GENERATED CODE-->
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-core-starter</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-spring-boot-starter</artifactId>
+ </dependency>
+ <!--END OF GENERATED CODE-->
+ </dependencies>
+</project>
diff --git
a/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/LICENSE.txt
b/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/LICENSE.txt
new file mode 100644
index 00000000000..6b0b1270ff0
--- /dev/null
+++
b/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/LICENSE.txt
@@ -0,0 +1,203 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
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+ "License" shall mean the terms and conditions for use, reproduction,
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+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
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+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
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+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
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+ 3. Grant of Patent License. Subject to the terms and conditions of
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+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
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+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
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+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
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+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
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+ file or class name and description of purpose be included on the
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+ Copyright [yyyy] [name of copyright owner]
+
+ 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.
+
diff --git
a/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/NOTICE.txt
b/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/NOTICE.txt
new file mode 100644
index 00000000000..2e215bf2e6b
--- /dev/null
+++
b/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/NOTICE.txt
@@ -0,0 +1,11 @@
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for the Apache Camel distribution. ==
+ =========================================================================
+
+ This product includes software developed by
+ The Apache Software Foundation (http://www.apache.org/).
+
+ Please read the different LICENSE files present in the licenses directory of
+ this distribution.
diff --git
a/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/spring.provides
b/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/spring.provides
new file mode 100644
index 00000000000..1cea613c1e7
--- /dev/null
+++
b/platforms/spring-boot/components-starter/camel-rxjava2-starter/src/main/resources/META-INF/spring.provides
@@ -0,0 +1,17 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements. See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You 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.
+## ---------------------------------------------------------------------------
+provides: camel-rxjava2
diff --git a/platforms/spring-boot/components-starter/pom.xml
b/platforms/spring-boot/components-starter/pom.xml
index dd6467deb0b..fbf27e1eba8 100644
--- a/platforms/spring-boot/components-starter/pom.xml
+++ b/platforms/spring-boot/components-starter/pom.xml
@@ -267,6 +267,7 @@
<module>camel-rss-starter</module>
<module>camel-ruby-starter</module>
<module>camel-rx-starter</module>
+ <module>camel-rxjava2-starter</module>
<module>camel-salesforce-starter</module>
<module>camel-sap-netweaver-starter</module>
<module>camel-saxon-starter</module>
diff --git
a/platforms/spring-boot/spring-boot-dm/camel-spring-boot-dependencies/pom.xml
b/platforms/spring-boot/spring-boot-dm/camel-spring-boot-dependencies/pom.xml
index 86e7100f0e1..e32f3ed5362 100644
---
a/platforms/spring-boot/spring-boot-dm/camel-spring-boot-dependencies/pom.xml
+++
b/platforms/spring-boot/spring-boot-dm/camel-spring-boot-dependencies/pom.xml
@@ -83,7 +83,7 @@
<dependency>
<groupId>com.dropbox.core</groupId>
<artifactId>dropbox-core-sdk</artifactId>
- <version>3.0.6</version>
+ <version>3.0.7</version>
</dependency>
<dependency>
<groupId>com.github.dozermapper</groupId>
@@ -2304,6 +2304,16 @@
<artifactId>camel-rx-starter</artifactId>
<version>${project.version}</version>
</dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2</artifactId>
+ <version>${project.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-rxjava2-starter</artifactId>
+ <version>${project.version}</version>
+ </dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-salesforce</artifactId>
----------------------------------------------------------------
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> Create camel-rxjava2 component
> ------------------------------
>
> Key: CAMEL-10806
> URL: https://issues.apache.org/jira/browse/CAMEL-10806
> Project: Camel
> Issue Type: New Feature
> Reporter: Luca Burgazzoli
> Assignee: Luca Burgazzoli
> Priority: Minor
> Fix For: 2.22.0
>
>
> A we have now camel-reactive-streams it would be nice to have a RxJava 2
> implementation of the camel-reactive-streams API
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