/**
* 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.Channel;
import org.apache.camel.Processor;
import org.apache.camel.Route;
import org.apache.camel.builder.NotifyBuilder;
import org.apache.camel.impl.EventDrivenConsumerRoute;
import org.apache.camel.processor.DeadLetterChannel;
import org.apache.camel.processor.DefaultErrorHandler;
import org.apache.camel.processor.DelegateAsyncProcessor;
import org.apache.camel.processor.DelegateProcessor;
import org.apache.camel.processor.Pipeline;
import org.apache.camel.spring.spi.TransactionErrorHandler;
import org.apache.camel.test.junit4.CamelSpringTestSupport;
import org.apache.xbean.spring.context.ClassPathXmlApplicationContext;
import org.junit.After;
import org.springframework.context.support.AbstractXmlApplicationContext;
/**
* 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
*/
public abstract class AbstractTransactionTest extends CamelSpringTestSupport {
@After
public void tearDown() throws Exception {
super.tearDown();
setCamelContextService(null);
context = null;
template = null;
}
protected AbstractXmlApplicationContext createApplicationContext() {
return new ClassPathXmlApplicationContext("org/apache/camel/component/jms/tx/JavaDSLTransactionTest.xml");
}
protected void assertResult() throws InterruptedException {
// should be 1 completed and 1 failed
NotifyBuilder notify = new NotifyBuilder(context).whenDone(2).create();
template.sendBody("activemq:queue:foo", "blah");
notify.matchesMockWaitTime();
assertTrue("Expected only 2 calls to process() (1 failure, 1 success) but encountered "
+ getConditionalExceptionProcessor().getCount() + "."
, getConditionalExceptionProcessor().getCount() == 2);
}
protected ConditionalExceptionProcessor getConditionalExceptionProcessor() {
Route route = context.getRoutes().get(0);
assertNotNull(route);
return getConditionalExceptionProcessor(route);
}
/**
* By default routes should be wrapped in the {@link DeadLetterChannel} so
* lets unwrap that and return the actual processor
*/
protected ConditionalExceptionProcessor getConditionalExceptionProcessor(Route route) {
// the following is very specific (and brittle) and is not generally
// useful outside these transaction tests (nor intended to be).
EventDrivenConsumerRoute consumerRoute = assertIsInstanceOf(EventDrivenConsumerRoute.class, route);
Processor processor = findProcessorByClass(consumerRoute.getProcessor(), ConditionalExceptionProcessor.class);
return assertIsInstanceOf(ConditionalExceptionProcessor.class, processor);
}
protected Processor findProcessorByClass(Processor processor, Class findClass) {
while (true) {
processor = unwrapDeadLetter(processor);
if (processor instanceof Channel) {
processor = ((Channel)processor).getNextProcessor();
} else if (processor instanceof DelegateProcessor) {
// TransactionInterceptor is a DelegateProcessor
processor = ((DelegateProcessor)processor).getProcessor();
} else if (processor instanceof DelegateAsyncProcessor) {
// TransactionInterceptor is a DelegateProcessor
processor = ((DelegateAsyncProcessor)processor).getProcessor();
} else if (processor instanceof Pipeline) {
for (Processor p : ((Pipeline)processor).getProcessors()) {
p = findProcessorByClass(p, findClass);
if (p != null && p.getClass().isAssignableFrom(findClass)) {
processor = p;
return processor;
}
}
} else {
return processor;
}
}
}
private Processor unwrapDeadLetter(Processor processor) {
while (true) {
if (processor instanceof Channel) {
processor = ((Channel)processor).getNextProcessor();
} else if (processor instanceof DeadLetterChannel) {
processor = ((DeadLetterChannel)processor).getOutput();
} else if (processor instanceof DefaultErrorHandler) {
processor = ((DefaultErrorHandler)processor).getOutput();
} else if (processor instanceof TransactionErrorHandler) {
processor = ((TransactionErrorHandler)processor).getOutput();
} else {
return processor;
}
}
}
}