/**
* 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.processor.jpa;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.examples.SendEmail;
import org.apache.camel.spring.SpringCamelContext;
import org.apache.camel.spring.SpringRouteBuilder;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.orm.jpa.JpaTemplate;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionTemplate;
/**
* @version
*/
public class JpaProducerConcurrentTest extends CamelTestSupport {
protected static final String SELECT_ALL_STRING = "select x from " + SendEmail.class.getName() + " x";
protected ApplicationContext applicationContext;
protected JpaTemplate jpaTemplate;
@Test
public void testNoConcurrentProducers() throws Exception {
doSendMessages(1, 1);
}
@Test
public void testConcurrentProducers() throws Exception {
doSendMessages(10, 5);
}
private void doSendMessages(int files, int poolSize) throws Exception {
getMockEndpoint("mock:result").expectedMessageCount(files);
getMockEndpoint("mock:result").assertNoDuplicates(body());
ExecutorService executor = Executors.newFixedThreadPool(poolSize);
Map<Integer, Future> responses = new ConcurrentHashMap<Integer, Future>();
for (int i = 0; i < files; i++) {
final int index = i;
Future out = executor.submit(new Callable<Object>() {
public Object call() throws Exception {
template.sendBody("direct:start", new SendEmail("user" + index + "@somewhere.org"));
return null;
}
});
responses.put(index, out);
}
assertMockEndpointsSatisfied();
assertEquals(files, responses.size());
// get them so they are complete
for (Future future : responses.values()) {
future.get();
}
// assert in the database
assertEntityInDB(files);
executor.shutdownNow();
}
@Override
protected CamelContext createCamelContext() throws Exception {
applicationContext = new ClassPathXmlApplicationContext("org/apache/camel/processor/jpa/springJpaRouteTest.xml");
cleanupRepository();
return SpringCamelContext.springCamelContext(applicationContext);
}
@Override
protected RouteBuilder createRouteBuilder() {
return new SpringRouteBuilder() {
public void configure() {
from("direct:start").to("jpa://" + SendEmail.class.getName()).to("mock:result");
}
};
}
private void assertEntityInDB(int number) throws Exception {
jpaTemplate = (JpaTemplate)applicationContext.getBean("jpaTemplate", JpaTemplate.class);
List list = jpaTemplate.find(SELECT_ALL_STRING);
assertEquals(number, list.size());
assertIsInstanceOf(SendEmail.class, list.get(0));
}
@SuppressWarnings("unchecked")
protected void cleanupRepository() {
jpaTemplate = (JpaTemplate)applicationContext.getBean("jpaTemplate", JpaTemplate.class);
TransactionTemplate transactionTemplate = new TransactionTemplate();
transactionTemplate.setTransactionManager(new JpaTransactionManager(jpaTemplate.getEntityManagerFactory()));
transactionTemplate.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
transactionTemplate.execute(new TransactionCallback() {
public Object doInTransaction(TransactionStatus arg0) {
List list = jpaTemplate.find(SELECT_ALL_STRING);
for (Object item : list) {
jpaTemplate.remove(item);
}
jpaTemplate.flush();
return Boolean.TRUE;
}
});
}
}