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MessageBuilderAtConfigTests.java
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MessageBuilderAtConfigTests.java
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/*
* Copyright 2014-2022 the original author or authors.
*
* 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
*
* https://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.springframework.integration.message;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.channel.PublishSubscribeChannel;
import org.springframework.integration.channel.QueueChannel;
import org.springframework.integration.config.ConsumerEndpointFactoryBean;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.handler.AbstractReplyProducingMessageHandler;
import org.springframework.integration.message.MessageBuilderAtConfigTests.MBConfig;
import org.springframework.integration.support.MessageBuilderFactory;
import org.springframework.integration.support.MutableMessageBuilderFactory;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.PollableChannel;
import org.springframework.messaging.support.GenericMessage;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Gary Russell
* @author Marius Bogoevici
*/
@ContextConfiguration(classes = MBConfig.class)
@RunWith(SpringJUnit4ClassRunner.class)
public class MessageBuilderAtConfigTests {
@Autowired
private MessageChannel in;
@Autowired
private PollableChannel out;
@Autowired
private MessageBuilderFactory messageBuilderFactory;
@Test
public void mutate() {
assertThat(messageBuilderFactory instanceof MutableMessageBuilderFactory).isTrue();
in.send(new GenericMessage<String>("foo"));
Message<?> m1 = out.receive(0);
Message<?> m2 = out.receive(0);
assertThat(m1.getClass().getName()).isEqualTo("org.springframework.integration.support.MutableMessage");
assertThat(m1 == m2).isTrue();
}
@Configuration
@EnableIntegration
public static class MBConfig {
@Bean
public MessageChannel in() {
return new DirectChannel();
}
@Bean
public PollableChannel out() {
return new QueueChannel();
}
@Bean
public MessageBuilderFactory messageBuilderFactory() {
return new MutableMessageBuilderFactory();
}
@Bean
public MessageChannel pubSub() {
return new PublishSubscribeChannel();
}
@Bean
public ConsumerEndpointFactoryBean echo1() throws Exception {
ConsumerEndpointFactoryBean factory = new ConsumerEndpointFactoryBean();
factory.setHandler(handler1());
factory.setInputChannel(in());
return factory;
}
@Bean
public AbstractReplyProducingMessageHandler handler1() {
AbstractReplyProducingMessageHandler handler = new RequestHeaderCopyingEchoHandler();
handler.setOutputChannel(pubSub());
return handler;
}
@Bean
public ConsumerEndpointFactoryBean echo2() throws Exception {
ConsumerEndpointFactoryBean factory = new ConsumerEndpointFactoryBean();
factory.setHandler(handler2());
factory.setInputChannel(pubSub());
return factory;
}
@Bean
public AbstractReplyProducingMessageHandler handler2() {
AbstractReplyProducingMessageHandler handler = new RequestHeaderCopyingEchoHandler();
handler.setOutputChannel(out());
return handler;
}
@Bean
public ConsumerEndpointFactoryBean echo3() throws Exception {
ConsumerEndpointFactoryBean factory = new ConsumerEndpointFactoryBean();
factory.setHandler(handler3());
factory.setInputChannel(pubSub());
return factory;
}
@Bean
public AbstractReplyProducingMessageHandler handler3() {
AbstractReplyProducingMessageHandler handler = new RequestHeaderCopyingEchoHandler();
handler.setOutputChannel(out());
return handler;
}
}
private static class RequestHeaderCopyingEchoHandler extends AbstractReplyProducingMessageHandler {
RequestHeaderCopyingEchoHandler() {
super();
}
@Override
protected Object handleRequestMessage(Message<?> requestMessage) {
return requestMessage;
}
}
}