/*
* Copyright (C) Scott Cranton and Jakub Korab
* https://github.com/CamelCookbook
*
* 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.camelcookbook.transactions.jmstransaction;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.camel.component.ActiveMQComponent;
import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.impl.SimpleRegistry;
import org.apache.camel.spring.spi.SpringTransactionPolicy;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.camelcookbook.transactions.utils.ExceptionThrowingProcessor;
import org.junit.Test;
import org.springframework.jms.connection.JmsTransactionManager;
/**
* Demonstrates the correct use of transactions with JMS when you need to perform a request-reply.
*/
public class JmsTransactionRequestReplyTest extends CamelTestSupport {
public static final int MAX_WAIT_TIME = 4000;
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new JmsTransactionRequestReplyRouteBuilder();
}
@Override
protected CamelContext createCamelContext() throws Exception {
SimpleRegistry registry = new SimpleRegistry();
ActiveMQConnectionFactory connectionFactory =
new ActiveMQConnectionFactory("vm://embedded?broker.persistent=false");
registry.put("connectionFactory", connectionFactory);
JmsTransactionManager jmsTransactionManager = new JmsTransactionManager();
jmsTransactionManager.setConnectionFactory(connectionFactory);
registry.put("jmsTransactionManager", jmsTransactionManager);
SpringTransactionPolicy propagationRequired = new SpringTransactionPolicy();
propagationRequired.setTransactionManager(jmsTransactionManager);
propagationRequired.setPropagationBehaviorName("PROPAGATION_REQUIRED");
registry.put("PROPAGATION_REQUIRED", propagationRequired);
SpringTransactionPolicy propagationNotSupported = new SpringTransactionPolicy();
propagationNotSupported.setTransactionManager(jmsTransactionManager);
propagationNotSupported.setPropagationBehaviorName("PROPAGATION_NOT_SUPPORTED");
registry.put("PROPAGATION_NOT_SUPPORTED", propagationNotSupported);
CamelContext camelContext = new DefaultCamelContext(registry);
ActiveMQComponent activeMQComponent = new ActiveMQComponent();
activeMQComponent.setConnectionFactory(connectionFactory);
activeMQComponent.setTransactionManager(jmsTransactionManager);
camelContext.addComponent("jms", activeMQComponent);
return camelContext;
}
@Test
public void testTransactedNoExceptionThrown() throws InterruptedException {
String message = "this message is OK";
// the request should be received by the backend
MockEndpoint mockBackEndReply = getMockEndpoint("mock:backEndReply");
mockBackEndReply.setExpectedMessageCount(1);
String backendReply = "Backend processed: this message is OK";
mockBackEndReply.message(0).body().isEqualTo(backendReply);
MockEndpoint mockOut = getMockEndpoint("mock:out");
mockOut.setExpectedMessageCount(1);
mockOut.message(0).body().isEqualTo(backendReply);
template.sendBody("jms:inbound", message);
assertMockEndpointsSatisfied();
assertNull(consumer.receiveBody("jms:ActiveMQ.DLQ", MAX_WAIT_TIME, String.class));
assertEquals(message, consumer.receiveBody("jms:auditQueue", MAX_WAIT_TIME, String.class));
}
@Test
public void testTransactedExceptionThrown() throws InterruptedException {
String message = "this message will explode";
// the back-end executed; it's status will be unaffected by the rollback
MockEndpoint mockBackEndReply = getMockEndpoint("mock:backEndReply");
mockBackEndReply.setExpectedMessageCount(1);
String backendReply = "Backend processed: this message will explode";
mockBackEndReply.message(0).body().isEqualTo(backendReply);
MockEndpoint mockOut = getMockEndpoint("mock:out");
mockOut.setExpectedMessageCount(1);
mockOut.whenAnyExchangeReceived(new ExceptionThrowingProcessor());
template.sendBody("jms:inbound", message);
// when transacted, ActiveMQ receives a failed signal when the exception is thrown
// the message is placed into a dead letter queue
final String dlqMessage = consumer.receiveBody("jms:ActiveMQ.DLQ", MAX_WAIT_TIME, String.class);
assertNotNull("Timed out waiting for DLQ message", dlqMessage);
log.info("dlq message = {}", dlqMessage);
assertEquals(message, dlqMessage);
assertNull(consumer.receiveBody("jms:auditQueue", MAX_WAIT_TIME, String.class));
}
}