/**
* 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.aggregator;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.camel.CamelContext;
import org.apache.camel.CamelExchangeException;
import org.apache.camel.CamelExecutionException;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.processor.BodyInAggregatingStrategy;
import org.apache.camel.processor.aggregate.MemoryAggregationRepository;
import org.apache.camel.processor.aggregate.OptimisticLockRetryPolicy;
import org.apache.camel.spi.OptimisticLockingAggregationRepository;
/**
* @version
*/
public class DistributedOptimisticLockFailingTest extends AbstractDistributedTest {
private static final class AlwaysFailingRepository extends MemoryAggregationRepository {
@Override
public Exchange add(CamelContext camelContext, String key, Exchange oldExchange, Exchange newExchange) {
throw new OptimisticLockingException();
}
}
private static final class EverySecondOneFailsRepository extends MemoryAggregationRepository {
private AtomicInteger counter = new AtomicInteger();
private EverySecondOneFailsRepository() {
super(true);
}
@Override
public Exchange add(CamelContext camelContext, String key, Exchange oldExchange, Exchange newExchange) {
int count = counter.incrementAndGet();
if (count % 2 == 0) {
throw new OptimisticLockingException();
} else {
return super.add(camelContext, key, oldExchange, newExchange);
}
}
}
private EverySecondOneFailsRepository sharedRepository = new EverySecondOneFailsRepository();
public void testAlwaysFails() throws Exception {
MockEndpoint mock = getMockEndpoint("mock:result");
mock.expectedMessageCount(0);
MockEndpoint mock2 = getMockEndpoint2("mock:result");
mock2.expectedMessageCount(0);
try {
template.sendBodyAndHeader("direct:fails", "hello world", "id", 1);
fail("Should throw CamelExecutionException");
} catch (CamelExecutionException e) {
assertIsInstanceOf(CamelExchangeException.class, e.getCause());
assertIsInstanceOf(OptimisticLockingAggregationRepository.OptimisticLockingException.class, e.getCause().getCause());
}
try {
template2.sendBodyAndHeader("direct:fails", "hello world", "id", 1);
fail("Should throw CamelExecutionException");
} catch (CamelExecutionException e) {
assertIsInstanceOf(CamelExchangeException.class, e.getCause());
assertIsInstanceOf(OptimisticLockingAggregationRepository.OptimisticLockingException.class, e.getCause().getCause());
}
mock.assertIsSatisfied();
mock2.assertIsSatisfied();
}
public void testEverySecondOneFails() throws Exception {
int size = 200;
ExecutorService service = Executors.newFixedThreadPool(50);
List<Callable<Object>> tasks = new ArrayList<Callable<Object>>();
for (int i = 0; i < size; i++) {
final int id = i % 25;
final int choice = i % 2;
final int count = i;
tasks.add(new Callable<Object>() {
public Object call() throws Exception {
if (choice == 0) {
template.sendBodyAndHeader("direct:everysecondone", "" + count, "id", id);
} else {
template2.sendBodyAndHeader("direct:everysecondone", "" + count, "id", id);
}
return null;
}
});
}
MockEndpoint mock = getMockEndpoint("mock:result");
MockEndpoint mock2 = getMockEndpoint2("mock:result");
// submit all tasks
service.invokeAll(tasks);
service.shutdown();
service.awaitTermination(10, TimeUnit.SECONDS);
int contextCount = mock.getReceivedCounter();
int context2Count = mock2.getReceivedCounter();
assertEquals(25, contextCount + context2Count);
}
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:fails")
.aggregate(header("id"), new BodyInAggregatingStrategy())
.aggregationRepository(new AlwaysFailingRepository())
.optimisticLocking()
.optimisticLockRetryPolicy(new OptimisticLockRetryPolicy().maximumRetries(5))
.completionSize(2)
.to("mock:result");
from("direct:everysecondone")
.aggregate(header("id"), new BodyInAggregatingStrategy())
.aggregationRepository(sharedRepository)
.optimisticLocking()
.completionSize(8)
.to("mock:result");
}
};
}
}