/*
* 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 javax.jcr.InvalidItemStateException;
import javax.jcr.Node;
import javax.jcr.Session;
import java.util.Random;
import java.util.ArrayList;
import java.util.Iterator;
public class ConcurrencyTest extends AbstractJCRTest {
private static final int NUM_ITERATIONS = 2;
private static final int NUM_SESSIONS = 100;
private static final int NUM_NODES = 100;
final ArrayList exceptions = new ArrayList();
protected void setUp() throws Exception {
super.setUp();
// @todo setup test environment
}
protected void tearDown() throws Exception {
try {
// @todo cleanup test environment
} finally {
super.tearDown();
}
}
/**
* Runs the test.
*/
public void testConcurrentWritingSessions() throws Exception {
int n = NUM_ITERATIONS;
while (n-- > 0) {
Thread[] threads = new Thread[NUM_SESSIONS];
for (int i = 0; i < threads.length; i++) {
// create new session
Session session = getHelper().getSuperuserSession();
TestSession ts = new TestSession("s" + i, session);
Thread t = new Thread(ts);
t.setName((NUM_ITERATIONS - n) + "-s" + i);
t.start();
threads[i] = t;
Thread.sleep(100);
}
for (int i = 0; i < threads.length; i++) {
threads[i].join();
}
}
if (!exceptions.isEmpty()) {
Exception e = null;
for (Iterator it = exceptions.iterator(); it.hasNext();) {
e = (Exception) it.next();
e.printStackTrace(log);
}
throw e;
//fail();
}
}
//--------------------------------------------------------< inner classes >
class TestSession implements Runnable {
Session session;
String identity;
Random r;
TestSession(String identity, Session s) {
session = s;
this.identity = identity;
r = new Random();
}
private void randomSleep() {
long l = r.nextInt(90) + 20;
try {
Thread.sleep(l);
} catch (InterruptedException ie) {
}
}
public void run() {
log.println("started.");
String state = "";
try {
Node rn = session.getRootNode().getNode(testPath);
state = "searching testnode";
Node n;
try {
if (rn.hasNode("testnode-" + identity)) {
state = "removing testnode";
rn.getNode("testnode-" + identity).remove();
session.save();
randomSleep();
}
state = "adding testnode";
n = rn.addNode("testnode-" + identity, "nt:unstructured");
session.save();
} catch (InvalidItemStateException e) {
// expected
log.println("encountered InvalidItemStateException while " + state + ", quitting...");
//e.printStackTrace(log);
return;
}
state = "setting property";
n.setProperty("testprop", "Hello World!");
session.save();
randomSleep();
for (int i = 0; i < NUM_NODES; i++) {
state = "adding subnode " + i;
n.addNode("x" + i, "nt:unstructured");
state = "adding property to subnode " + i;
n.setProperty("testprop", "xxx");
if (i % 10 == 0) {
state = "saving pending subnodes";
session.save();
}
randomSleep();
}
session.save();
} catch (Exception e) {
log.println("Exception while " + state + ": " + e.getMessage());
//e.printStackTrace();
exceptions.add(e);
} finally {
session.logout();
}
log.println("ended.");
}
}
}