/*
* 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.jackrabbit.oak.jcr;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.PropertyIterator;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import com.google.common.collect.Lists;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
import org.junit.Test;
/**
* Test cases asserting concurrent session access does not
* corrupt Oak internal data structures.
*/
public class ConcurrentReadIT extends AbstractRepositoryTest {
public ConcurrentReadIT(NodeStoreFixture fixture) {
super(fixture);
}
@Test
public void concurrentNodeIteration()
throws RepositoryException, InterruptedException, ExecutionException {
final Session session = createAdminSession();
try {
final Node testRoot = session.getRootNode().addNode("test-root");
for (int k = 0; k < 50; k++) {
testRoot.addNode("n" + k);
}
session.save();
ListeningExecutorService executorService = MoreExecutors.listeningDecorator(
Executors.newCachedThreadPool());
List<ListenableFuture<?>> futures = Lists.newArrayList();
for (int k = 0; k < 20; k ++) {
futures.add(executorService.submit(new Callable<Void>() {
@Override
public Void call() throws Exception {
for (int k = 0; k < 10000; k++) {
session.refresh(false);
NodeIterator children = testRoot.getNodes();
children.hasNext();
}
return null;
}
}));
}
// Throws ExecutionException if any of the submitted task failed
Futures.allAsList(futures).get();
executorService.shutdown();
executorService.awaitTermination(1, TimeUnit.DAYS);
} finally {
session.logout();
}
}
@Test
public void concurrentPropertyIteration()
throws RepositoryException, InterruptedException, ExecutionException {
final Session session = createAdminSession();
try {
final Node testRoot = session.getRootNode().addNode("test-root");
for (int k = 0; k < 50; k++) {
testRoot.setProperty("p" + k, k);
}
session.save();
ListeningExecutorService executorService = MoreExecutors.listeningDecorator(
Executors.newCachedThreadPool());
List<ListenableFuture<?>> futures = Lists.newArrayList();
for (int k = 0; k < 20; k ++) {
futures.add(executorService.submit(new Callable<Void>() {
@Override
public Void call() throws Exception {
for (int k = 0; k < 100000; k++) {
session.refresh(false);
PropertyIterator properties = testRoot.getProperties();
properties.hasNext();
}
return null;
}
}));
}
// Throws ExecutionException if any of the submitted task failed
Futures.allAsList(futures).get();
executorService.shutdown();
executorService.awaitTermination(1, TimeUnit.DAYS);
} finally {
session.logout();
}
}
}