JMSTransactionIsTransactedRedeliveredTest.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 javax.management.MBeanServer;
import javax.management.ObjectName;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.AdviceWithRouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.test.spring.CamelSpringTestSupport;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 *
 */
public class JMSTransactionIsTransactedRedeliveredTest extends CamelSpringTestSupport {

    protected ClassPathXmlApplicationContext createApplicationContext() {
        return new ClassPathXmlApplicationContext(
                "/org/apache/camel/component/jms/tx/JMSTransactionIsTransactedRedeliveredTest.xml");
    }

    @Override
    public boolean isUseAdviceWith() {
        return true;
    }

    protected MBeanServer getMBeanServer() {
        return context.getManagementStrategy().getManagementAgent().getMBeanServer();
    }

    @Test
    public void testTransactionSuccess() throws Exception {
        context.getRouteDefinitions().get(0).adviceWith(context, new AdviceWithRouteBuilder() {
            @Override
            public void configure() throws Exception {
                onException(AssertionError.class).to("log:error", "mock:error");
            }
        });
        context.start();

        // there should be no assertion errors
        MockEndpoint error = getMockEndpoint("mock:error");
        error.expectedMessageCount(0);

        MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(1);
        mock.expectedBodiesReceived("Bye World");
        // success at 3rd attempt
        mock.message(0).header("count").isEqualTo(3);

        template.sendBody("activemq:queue:okay", "Hello World");

        mock.assertIsSatisfied();
        error.assertIsSatisfied();

        // check JMX stats
        // need a little sleep to ensure JMX is updated
        Thread.sleep(500);

        ObjectName name = ObjectName.getInstance("org.apache.camel:context=camel-1,type=routes,name=\"myRoute\"");

        Long total = (Long) getMBeanServer().getAttribute(name, "ExchangesTotal");
        assertEquals(3, total.intValue());

        Long completed = (Long) getMBeanServer().getAttribute(name, "ExchangesCompleted");
        assertEquals(1, completed.intValue());

        Long failed = (Long) getMBeanServer().getAttribute(name, "ExchangesFailed");
        assertEquals(2, failed.intValue());

        // Camel error handler redeliveries (we do not use that in this example)
        Long redeliveries = (Long) getMBeanServer().getAttribute(name, "Redeliveries");
        assertEquals(0, redeliveries.intValue());
        // Camel error handler redeliveries (we do not use that in this example)

        // there should be 2 external redeliveries
        Long externalRedeliveries = (Long) getMBeanServer().getAttribute(name, "ExternalRedeliveries");
        assertEquals(2, externalRedeliveries.intValue());
    }

    public static class MyProcessor implements Processor {
        private int count;

        public void process(Exchange exchange) throws Exception {
            ++count;

            // the first is not redelivered
            if (count == 1) {
                assertFalse("Should not be external redelivered", exchange.isExternalRedelivered());
            } else {
                assertTrue("Should be external redelivered", exchange.isExternalRedelivered());
            }

            if (count < 3) {
                throw new IllegalArgumentException("Forced exception");
            }
            exchange.getIn().setBody("Bye World");
            exchange.getIn().setHeader("count", count);
        }
    }

}