| /** |
| * 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.example.reactive.streams; |
| |
| import java.time.Duration; |
| import javax.annotation.PostConstruct; |
| |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.component.reactive.streams.api.CamelReactiveStreamsService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.beans.factory.annotation.Autowired; |
| import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; |
| import org.springframework.context.annotation.Configuration; |
| import org.springframework.stereotype.Component; |
| |
| import reactor.core.publisher.Flux; |
| |
| /** |
| * This example shows how a reactive stream framework can asynchronously request data to a Camel stream |
| * and continue processing. |
| * |
| * The exchange pattern is in-out from Reactor to Camel. |
| * |
| * Note: the Camel and reactor components are placed in the same configuration class for the sake of clarity, |
| * but they can be moved in their own files. |
| */ |
| @Configuration |
| @ConditionalOnProperty("examples.basic.reactor-to-camel-in-out") |
| public class BasicReactorToCamelInOutExample { |
| |
| /** |
| * The reactor streams. |
| */ |
| @Component |
| public static class BasicReactorToCamelInOutExampleStreams { |
| private static final Logger LOG = LoggerFactory.getLogger(BasicReactorToCamelInOutExample.class); |
| |
| @Autowired |
| private CamelReactiveStreamsService camel; |
| |
| |
| @PostConstruct |
| public void setupStreams() { |
| |
| Flux.interval(Duration.ofSeconds(8)) |
| .map(i -> i + 1) // to start from 1 |
| .flatMap(camel.toStream("sqrt", Double.class)) // call Camel and continue |
| .map(d -> "BasicReactorToCamelInOut - sqrt=" + d) |
| .doOnNext(LOG::info) |
| .subscribe(); |
| |
| } |
| } |
| |
| |
| /** |
| * The Camel Configuration. |
| */ |
| @Component |
| public static class BasicReactorToCamelInOutExampleRoutes extends RouteBuilder { |
| |
| @Override |
| public void configure() throws Exception { |
| |
| // Transform the body of every exchange into its square root |
| from("reactive-streams:sqrt") |
| .setBody().body(Double.class, Math::sqrt); |
| |
| // This route can be much more complex: it can use any Camel component to compute the output data |
| |
| } |
| |
| } |
| |
| } |