/*
* Copyright 2017 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
*
* 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.springframework.integration.dsl.publishsubscribe;
import static org.hamcrest.Matchers.contains;
import static org.junit.Assert.assertThat;
import java.util.LinkedList;
import java.util.List;
import java.util.function.Consumer;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.dsl.IntegrationFlow;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.MessageHandler;
import org.springframework.messaging.support.GenericMessage;
import org.springframework.test.context.junit4.SpringRunner;
/**
* @author Artem Bilan
* @author Gary Russell
*
* @since 5.0
*/
@RunWith(SpringRunner.class)
public class PublishSubscribeTests {
@Autowired
@Qualifier("pubSubFlow.input")
private MessageChannel inputChannel;
@Autowired
private List<Integer> subscribersOrderedCall;
@Test
public void executeFirstFlow() {
this.inputChannel.send(new GenericMessage<>("Test"));
assertThat(this.subscribersOrderedCall, contains(0, 1, 2, 3, 4, 5));
}
@Configuration
@EnableIntegration
static class PubSubBugTestContext {
@Bean
public List<Integer> subscribersOrderedCall() {
return new LinkedList<>();
}
@Bean
public Consumer<String> subscriberConsumerBean() {
return s -> subscribersOrderedCall().add(2);
}
@Bean
public MessageHandler subscriberMessageHandlerBean() {
return s -> subscribersOrderedCall().add(3);
}
@Bean
public IntegrationFlow pubSubFlow() {
return f -> f
.publishSubscribeChannel(c -> c
.subscribe(sf -> sf
.handle(m -> subscribersOrderedCall().add(0)))
.subscribe(sf -> sf
.<String>handle((p, h) -> {
subscribersOrderedCall().add(1);
return null;
}))
.subscribe(sf -> sf
.handle(subscriberConsumerBean()))
.subscribe(sf -> sf
.handle(subscriberMessageHandlerBean()))
.subscribe(sf -> sf
.channel("secondInlineSubscriberChannel")
.handle(m -> subscribersOrderedCall().add(4)))
)
.<String>handle((p, h) -> {
subscribersOrderedCall().add(5);
return null;
});
}
}
}