camel-2.8.x/components/camel-jms/src/test/java/org/apache/camel/component/jms/tx/QueueToQueueRequestReplyTransactionTest.java

/**
 * 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.component.jms.tx;

import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.Processor;
import org.apache.camel.spi.Policy;
import org.apache.camel.spring.SpringRouteBuilder;
import org.apache.camel.spring.spi.SpringTransactionPolicy;
import org.junit.Test;

/**
 * Test case derived from:
 * http://camel.apache.org/transactional-client.html and Martin
 * Krasser's sample:
 * http://www.nabble.com/JMS-Transactions---How-To-td15168958s22882.html#a15198803
 * <p/>
 * NOTE: had to split into separate test classes as I was unable to fully tear
 * down and isolate the test cases, I'm not sure why, but as soon as we know the
 * Transaction classes can be joined into one.
 */
public class QueueToQueueRequestReplyTransactionTest extends AbstractTransactionTest {

    protected int getExpectedRouteCount() {
        return 0;
    }

    @Test
    public void testRollbackUsingXmlQueueToQueueRequestReplyUsingDynamicMessageSelector() throws Exception {
        final ConditionalExceptionProcessor cp = new ConditionalExceptionProcessor(5);
        context.addRoutes(new SpringRouteBuilder() {
            @Override
            public void configure() throws Exception {
                Policy required = lookup("PROPAGATION_REQUIRED_POLICY", SpringTransactionPolicy.class);

                from("activemq:queue:foo").policy(required).process(cp).to("activemq-1:queue:bar?replyTo=queue:bar.reply");

                from("activemq-1:queue:bar").process(new Processor() {
                    public void process(Exchange e) {
                        String request = e.getIn().getBody(String.class);
                        Message out = e.getOut();
                        String selectorValue = e.getIn().getHeader("camelProvider", String.class);
                        if (selectorValue != null) {
                            out.setHeader("camelProvider", selectorValue);
                        }
                        out.setBody("Re: " + request);
                    }
                });
            }
        });

        for (int i = 0; i < 5; ++i) {
            Object reply = template.requestBody("activemq:queue:foo", "blah" + i);
            assertTrue("Received unexpeced reply", reply.equals("Re: blah" + i));
            assertTrue(cp.getErrorMessage(), cp.getErrorMessage() == null);
        }
    }

}