| /* |
| * 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 org.apache.camel.Exchange; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.component.reactive.streams.util.UnwrapStreamProcessor; |
| import org.reactivestreams.Publisher; |
| 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 Camel can asynchronously request data to a reactive stream framework |
| * and continue processing. |
| * |
| * The exchange pattern is in-out from Camel to Reactor. |
| * |
| * 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.camel-to-reactor-in-out") |
| public class BasicCamelToReactorInOutExample { |
| |
| /** |
| * The reactor streams. |
| */ |
| @Component("userBean") |
| public static class BasicCamelToReactorInOutExampleStreams { |
| |
| /** |
| * This method will be called by a Camel route. |
| */ |
| public Publisher<UserInfo> getUserInfo(Publisher<Long> userId) { |
| return Flux.from(userId) |
| .map(UserInfo::new) |
| .flatMap(this::retrieveAddress) |
| .flatMap(this::retrieveName); |
| } |
| |
| /** |
| * This is a sample utility method. |
| */ |
| private Publisher<UserInfo> retrieveAddress(UserInfo user) { |
| // you can do an async database retrieval here |
| return Flux.just(user.withAddress("Address" + user.getId())); |
| } |
| |
| private Publisher<UserInfo> retrieveName(UserInfo user) { |
| // you can do an async database retrieval here |
| return Flux.just(user.withName("Name" + user.getId())); |
| } |
| |
| } |
| |
| |
| /** |
| * The Camel Configuration. |
| */ |
| @Component |
| public static class BasicCamelToReactorInOutExampleRoutes extends RouteBuilder { |
| |
| @Override |
| public void configure() throws Exception { |
| |
| // Generate a Id and retrieve user data from reactor |
| from("timer:clock?period=9000&delay=1500") |
| .setBody().header(Exchange.TIMER_COUNTER).convertBodyTo(Long.class) // Sample ID |
| .bean("userBean", "getUserInfo") // Get the user info from reactor code |
| .process(new UnwrapStreamProcessor()) // Unwrap the Publisher |
| .log("BasicCamelToReactorInOut - Got ${body}"); |
| |
| } |
| |
| } |
| |
| |
| /** |
| * Sample bean used in the example. |
| */ |
| public static class UserInfo { |
| |
| private Long id; |
| |
| private String name; |
| |
| private String address; |
| |
| public UserInfo() { |
| } |
| |
| public UserInfo(Long id) { |
| this.id = id; |
| } |
| |
| public Long getId() { |
| return id; |
| } |
| |
| public void setId(Long id) { |
| this.id = id; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| public UserInfo withName(String name) { |
| this.name = name; |
| return this; |
| } |
| |
| public String getAddress() { |
| return address; |
| } |
| |
| public void setAddress(String address) { |
| this.address = address; |
| } |
| |
| public UserInfo withAddress(String address) { |
| this.address = address; |
| return this; |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuilder sb = new StringBuilder("UserInfo{"); |
| sb.append("id=").append(id); |
| sb.append(", name='").append(name).append('\''); |
| sb.append(", address='").append(address).append('\''); |
| sb.append('}'); |
| return sb.toString(); |
| } |
| } |
| |
| } |