/*
* Copyright 2002-2017 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.bus;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.integration.channel.PublishSubscribeChannel;
import org.springframework.integration.channel.QueueChannel;
import org.springframework.integration.context.IntegrationContextUtils;
import org.springframework.integration.core.MessageSource;
import org.springframework.integration.endpoint.EventDrivenConsumer;
import org.springframework.integration.endpoint.PollingConsumer;
import org.springframework.integration.endpoint.SourcePollingChannelAdapter;
import org.springframework.integration.handler.AbstractReplyProducingMessageHandler;
import org.springframework.integration.scheduling.PollerMetadata;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.integration.test.util.TestUtils;
import org.springframework.integration.test.util.TestUtils.TestApplicationContext;
import org.springframework.messaging.Message;
import org.springframework.messaging.PollableChannel;
import org.springframework.messaging.support.ErrorMessage;
import org.springframework.messaging.support.GenericMessage;
import org.springframework.scheduling.support.PeriodicTrigger;
/**
* @author Mark Fisher
* @author Artem Bilan
* @author Andreas Baer
*/
public class ApplicationContextMessageBusTests {
@Test
public void endpointRegistrationWithInputChannelReference() {
TestApplicationContext context = TestUtils.createTestApplicationContext();
QueueChannel sourceChannel = new QueueChannel();
QueueChannel targetChannel = new QueueChannel();
context.registerChannel("sourceChannel", sourceChannel);
context.registerChannel("targetChannel", targetChannel);
Message<String> message = MessageBuilder.withPayload("test")
.setReplyChannelName("targetChannel").build();
sourceChannel.send(message);
AbstractReplyProducingMessageHandler handler = new AbstractReplyProducingMessageHandler() {
@Override
public Object handleRequestMessage(Message<?> message) {
return message;
}
};
handler.setBeanFactory(context);
handler.afterPropertiesSet();
PollingConsumer endpoint = new PollingConsumer(sourceChannel, handler);
endpoint.setBeanFactory(mock(BeanFactory.class));
context.registerEndpoint("testEndpoint", endpoint);
context.refresh();
Message<?> result = targetChannel.receive(10000);
assertEquals("test", result.getPayload());
context.stop();
}
@Test
public void channelsWithoutHandlers() {
TestApplicationContext context = TestUtils.createTestApplicationContext();
QueueChannel sourceChannel = new QueueChannel();
context.registerChannel("sourceChannel", sourceChannel);
sourceChannel.send(new GenericMessage<String>("test"));
QueueChannel targetChannel = new QueueChannel();
context.registerChannel("targetChannel", targetChannel);
context.refresh();
Message<?> result = targetChannel.receive(10);
assertNull(result);
context.stop();
}
@Test
public void autoDetectionWithApplicationContext() {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("messageBusTests.xml", this.getClass());
context.start();
PollableChannel sourceChannel = (PollableChannel) context.getBean("sourceChannel");
sourceChannel.send(new GenericMessage<String>("test"));
PollableChannel targetChannel = (PollableChannel) context.getBean("targetChannel");
Message<?> result = targetChannel.receive(10000);
assertEquals("test", result.getPayload());
context.close();
}
@Test
public void exactlyOneConsumerReceivesPointToPointMessage() {
TestApplicationContext context = TestUtils.createTestApplicationContext();
QueueChannel inputChannel = new QueueChannel();
QueueChannel outputChannel1 = new QueueChannel();
QueueChannel outputChannel2 = new QueueChannel();
AbstractReplyProducingMessageHandler handler1 = new AbstractReplyProducingMessageHandler() {
@Override
public Object handleRequestMessage(Message<?> message) {
return message;
}
};
AbstractReplyProducingMessageHandler handler2 = new AbstractReplyProducingMessageHandler() {
@Override
public Object handleRequestMessage(Message<?> message) {
return message;
}
};
context.registerChannel("input", inputChannel);
context.registerChannel("output1", outputChannel1);
context.registerChannel("output2", outputChannel2);
handler1.setOutputChannel(outputChannel1);
handler2.setOutputChannel(outputChannel2);
PollingConsumer endpoint1 = new PollingConsumer(inputChannel, handler1);
endpoint1.setBeanFactory(mock(BeanFactory.class));
PollingConsumer endpoint2 = new PollingConsumer(inputChannel, handler2);
endpoint2.setBeanFactory(mock(BeanFactory.class));
context.registerEndpoint("testEndpoint1", endpoint1);
context.registerEndpoint("testEndpoint2", endpoint2);
context.refresh();
inputChannel.send(new GenericMessage<String>("testing"));
Message<?> message1 = outputChannel1.receive(10000);
Message<?> message2 = outputChannel2.receive(0);
context.stop();
assertTrue("exactly one message should be null", message1 == null ^ message2 == null);
}
@Test
public void bothConsumersReceivePublishSubscribeMessage() throws InterruptedException {
TestApplicationContext context = TestUtils.createTestApplicationContext();
PublishSubscribeChannel inputChannel = new PublishSubscribeChannel();
QueueChannel outputChannel1 = new QueueChannel();
QueueChannel outputChannel2 = new QueueChannel();
final CountDownLatch latch = new CountDownLatch(2);
AbstractReplyProducingMessageHandler handler1 = new AbstractReplyProducingMessageHandler() {
@Override
public Object handleRequestMessage(Message<?> message) {
latch.countDown();
return message;
}
};
AbstractReplyProducingMessageHandler handler2 = new AbstractReplyProducingMessageHandler() {
@Override
public Object handleRequestMessage(Message<?> message) {
latch.countDown();
return message;
}
};
context.registerChannel("input", inputChannel);
context.registerChannel("output1", outputChannel1);
context.registerChannel("output2", outputChannel2);
handler1.setOutputChannel(outputChannel1);
handler2.setOutputChannel(outputChannel2);
EventDrivenConsumer endpoint1 = new EventDrivenConsumer(inputChannel, handler1);
EventDrivenConsumer endpoint2 = new EventDrivenConsumer(inputChannel, handler2);
context.registerEndpoint("testEndpoint1", endpoint1);
context.registerEndpoint("testEndpoint2", endpoint2);
context.refresh();
inputChannel.send(new GenericMessage<String>("testing"));
latch.await(500, TimeUnit.MILLISECONDS);
assertEquals("both handlers should have been invoked", 0, latch.getCount());
Message<?> message1 = outputChannel1.receive(500);
Message<?> message2 = outputChannel2.receive(500);
context.stop();
assertNotNull("both handlers should have replied to the message", message1);
assertNotNull("both handlers should have replied to the message", message2);
}
@Test
public void errorChannelWithFailedDispatch() throws InterruptedException {
TestApplicationContext context = TestUtils.createTestApplicationContext();
QueueChannel errorChannel = new QueueChannel();
QueueChannel outputChannel = new QueueChannel();
context.registerChannel("errorChannel", errorChannel);
CountDownLatch latch = new CountDownLatch(1);
SourcePollingChannelAdapter channelAdapter = new SourcePollingChannelAdapter();
channelAdapter.setSource(new FailingSource(latch));
PollerMetadata pollerMetadata = new PollerMetadata();
pollerMetadata.setTrigger(new PeriodicTrigger(1000));
channelAdapter.setOutputChannel(outputChannel);
context.registerEndpoint("testChannel", channelAdapter);
context.refresh();
latch.await(2000, TimeUnit.MILLISECONDS);
Message<?> message = errorChannel.receive(5000);
context.stop();
assertNull(outputChannel.receive(100));
assertNotNull("message should not be null", message);
assertTrue(message instanceof ErrorMessage);
Throwable exception = ((ErrorMessage) message).getPayload();
assertEquals("intentional test failure", exception.getCause().getMessage());
}
@Test
public void consumerSubscribedToErrorChannel() throws InterruptedException {
TestApplicationContext context = TestUtils.createTestApplicationContext();
QueueChannel errorChannel = new QueueChannel();
context.registerChannel(IntegrationContextUtils.ERROR_CHANNEL_BEAN_NAME, errorChannel);
final CountDownLatch latch = new CountDownLatch(1);
AbstractReplyProducingMessageHandler handler = new AbstractReplyProducingMessageHandler() {
@Override
public Object handleRequestMessage(Message<?> message) {
latch.countDown();
return null;
}
};
PollingConsumer endpoint = new PollingConsumer(errorChannel, handler);
endpoint.setBeanFactory(mock(BeanFactory.class));
context.registerEndpoint("testEndpoint", endpoint);
context.refresh();
errorChannel.send(new ErrorMessage(new RuntimeException("test-exception")));
latch.await(1000, TimeUnit.MILLISECONDS);
assertEquals("handler should have received error message", 0, latch.getCount());
context.stop();
}
private static class FailingSource implements MessageSource<Object> {
private final CountDownLatch latch;
FailingSource(CountDownLatch latch) {
this.latch = latch;
}
@Override
public Message<Object> receive() {
latch.countDown();
throw new RuntimeException("intentional test failure");
}
}
}