/*
* 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.core;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.InvalidItemStateException;
import javax.jcr.version.Version;
import javax.transaction.UserTransaction;
import org.apache.jackrabbit.core.state.StaleItemStateException;
/**
* <code>ConcurrentVersioningTest</code> contains test cases that run version
* operations with concurrent threads.
*/
public class ConcurrentVersioningWithTransactionsTest extends AbstractConcurrencyTest {
/**
* The number of threads.
*/
private static final int CONCURRENCY = 100;
/**
* The total number of operations to execute. E.g. number of checkins
* performed by the threads.
*/
private static final int NUM_OPERATIONS = 100;
/**
* Creates the named test node. The node is created within a transaction
* to avoid mixing transactional and non-transactional writes within a
* concurrent test run.
*/
private static synchronized Node createParentNode(Node test, String name)
throws RepositoryException {
try {
UserTransaction utx = new UserTransactionImpl(test.getSession());
utx.begin();
Node parent = test.addNode(name);
test.save();
utx.commit();
return parent;
} catch (RepositoryException e) {
throw e;
} catch (Exception e) {
throw new RepositoryException("Failed to add node: " + name, e);
}
}
public void testConcurrentAddVersionableInTransaction()
throws RepositoryException {
runTask(new Task() {
public void execute(Session session, Node test)
throws RepositoryException {
// add versionable nodes
final String threadName = Thread.currentThread().getName();
Node parent = createParentNode(test, threadName);
for (int i = 0; i < NUM_OPERATIONS / CONCURRENCY; i++) {
try {
final UserTransaction utx = new UserTransactionImpl(test.getSession());
utx.begin();
final String nodeName = "test" + i;
Node n = parent.addNode(nodeName);
n.addMixin(mixVersionable);
session.save();
utx.commit();
} catch (InvalidItemStateException e) {
// ignore
} catch (Exception e) {
final Throwable deepCause = getLevel2Cause(e);
if (deepCause != null && deepCause instanceof StaleItemStateException) {
// ignore
} else {
throw new RepositoryException(threadName + ", i=" + i + ":" + e.getClass().getName(), e);
}
}
}
}
}, CONCURRENCY);
}
public void testConcurrentCheckinInTransaction()
throws RepositoryException {
runTask(new Task() {
public void execute(Session session, Node test)
throws RepositoryException {
int i = 0;
try {
Node n = test.addNode("test");
n.addMixin(mixVersionable);
session.save();
for (i = 0; i < NUM_OPERATIONS / CONCURRENCY; i++) {
final UserTransaction utx = new UserTransactionImpl(test.getSession());
utx.begin();
n.checkout();
n.checkin();
utx.commit();
}
n.checkout();
} catch (Exception e) {
final String threadName = Thread.currentThread().getName();
final Throwable deepCause = getLevel2Cause(e);
if (deepCause != null && deepCause instanceof StaleItemStateException) {
// ignore
} else {
throw new RepositoryException(threadName + ", i=" + i + ":" + e.getClass().getName(), e);
}
}
}
}, CONCURRENCY);
}
public void testConcurrentCreateAndCheckinCheckoutInTransaction()
throws RepositoryException {
runTask(new Task() {
public void execute(Session session, Node test)
throws RepositoryException {
// add versionable nodes
for (int i = 0; i < NUM_OPERATIONS / CONCURRENCY; i++) {
try {
final UserTransaction utx = new UserTransactionImpl(test.getSession());
utx.begin();
Node n = test.addNode("test" + i);
n.addMixin(mixVersionable);
session.save();
n.checkout();
n.checkin();
n.checkout();
utx.commit();
} catch (Exception e) {
final String threadName = Thread.currentThread().getName();
final Throwable deepCause = getLevel2Cause(e);
if (deepCause != null && deepCause instanceof StaleItemStateException) {
// ignore
} else {
throw new RepositoryException(threadName + ", i=" + i + ":" + e.getClass().getName(), e);
}
}
}
}
}, CONCURRENCY);
}
public void testConcurrentRestoreInTransaction()
throws RepositoryException {
runTask(new Task() {
public void execute(Session session, Node test)
throws RepositoryException {
int i = 0;
try {
Node n = test.addNode("test");
n.addMixin(mixVersionable);
session.save();
// create 3 version
List versions = new ArrayList();
for (i = 0; i < 3; i++) {
n.checkout();
versions.add(n.checkin());
}
// do random restores
Random rand = new Random();
for (i = 0; i < NUM_OPERATIONS / CONCURRENCY; i++) {
Version v = (Version) versions.get(rand.nextInt(versions.size()));
n.restore(v, true);
}
n.checkout();
} catch (Exception e) {
final String threadName = Thread.currentThread().getName();
final Throwable deepCause = getLevel2Cause(e);
if (deepCause != null && deepCause instanceof StaleItemStateException) {
// ignore
} else {
throw new RepositoryException(threadName + ", i=" + i + ":" + e.getClass().getName(), e);
}
}
}
}, CONCURRENCY);
}
private static Throwable getLevel2Cause(Throwable t) {
Throwable result = null;
try {
result = t.getCause().getCause();
} catch (NullPointerException npe) {
// ignore, we have no deep cause
}
return result;
}
}