/*
* 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 org.apache.jackrabbit.test.AbstractJCRTest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jcr.Session;
import javax.jcr.Node;
import javax.jcr.Value;
import java.util.ArrayList;
import java.util.List;
/**
* Performs a test with two threads. One thread adds nodes to the testRootNode
* and sets a property. The second thread removes the property as soon as it
* sees a newly created node.
*/
public class ConcurrentSaveTest extends AbstractJCRTest {
/** logger instance */
private static final Logger log = LoggerFactory.getLogger(ConcurrentSaveTest.class);
private final int NUM_NODES = 1000;
private Session addNodeSession;
private Session removePropertySession;
protected void setUp() throws Exception {
super.setUp();
addNodeSession = getHelper().getSuperuserSession();
removePropertySession = getHelper().getSuperuserSession();
}
protected void tearDown() throws Exception {
try {
if (addNodeSession != null) {
addNodeSession.logout();
addNodeSession = null;
}
if (removePropertySession != null) {
removePropertySession.logout();
removePropertySession = null;
}
} finally {
super.tearDown();
}
}
/**
* Runs the test.
*/
public void testConcurrentSave() throws Exception {
final String path = testPath;
final List exceptions = new ArrayList();
Thread addNodeWorker = new Thread() {
public void run() {
try {
Node testNode = addNodeSession.getRootNode().getNode(path);
for (int i = 0; i < NUM_NODES; i++) {
Node n = testNode.addNode("node" + i);
n.setProperty("foo", "some text");
log.info("creating node: node" + i);
testNode.save();
log.info("created node: node" + i);
// give other thread a chance to catch up
yield();
}
} catch (Exception e) {
exceptions.add(e);
}
}
};
Thread removePropertyWorker = new Thread() {
public void run() {
try {
Node rootNode = removePropertySession.getRootNode().getNode(path);
for (int i = 0; i < NUM_NODES; i++) {
// wait for node to be created
while (!rootNode.hasNode("node" + i)) {
Thread.sleep(0, 50);
}
Node n = rootNode.getNode("node" + i);
// remove property
n.setProperty("foo", (Value) null);
log.info("removing property from node: node" + i);
n.save();
log.info("property removed from node: node" + i);
}
} catch (Exception e) {
exceptions.add(e);
}
}
};
addNodeWorker.start();
removePropertyWorker.start();
addNodeWorker.join();
removePropertyWorker.join();
if (exceptions.size() > 0) {
throw (Exception) exceptions.get(0);
}
}
}