/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.jcr.lab.cluster.prepare;
import org.exoplatform.services.jcr.JcrAPIBaseTest;
import org.exoplatform.services.jcr.core.CredentialsImpl;
import org.exoplatform.services.jcr.core.WorkspaceContainerFacade;
import org.exoplatform.services.jcr.dataflow.persistent.WorkspaceStorageCache;
import org.exoplatform.services.jcr.impl.core.SessionImpl;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Random;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
/**
* @author <a href="mailto:nikolazius@gmail.com">Nikolay Zamosenchuk</a>
* @version $Id: TestLoadIndexerWriter.java 34360 2009-07-22 23:58:59Z nzamosenchuk $
*
*/
public class TestLoadIndexerWriterWithModes extends JcrAPIBaseTest
{
public static final String COUNT = "count";
public static final String CONTENT = "Content";
public static final String STATISTIC = "Statistic";
private volatile boolean stop = false;
private AtomicBoolean makeThemWait = new AtomicBoolean();
private int threadCount = 10;
private final CountDownLatch startSignal = new CountDownLatch(1);
private final CountDownLatch doneSignal = new CountDownLatch(threadCount);
private final CyclicBarrier barrier = new CyclicBarrier(threadCount);
private volatile CountDownLatch goSignal;
private static final String[] words =
new String[]{"private", "branch", "final", "string", "logging", "bottle", "property", "node", "repository",
"exception", "cycle", "value", "index", "meaning", "strange", "words", "hello", "outline", "finest",
"basetest", "writer"};
private WorkspaceStorageCache cache;
public void testWrite() throws Exception
{
WorkspaceContainerFacade wsc = repository.getWorkspaceContainer("ws");
this.cache = (WorkspaceStorageCache)wsc.getComponent(WorkspaceStorageCache.class);
log.info("Skip (y/n) :");
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String line = reader.readLine();
if (!line.equals("y"))
{
log.info("Creating threads...");
for (int i = 0; i < threadCount; i++)
{
// create new thread and start it
new Thread(new WriterTask(i)).start();
log.info("Thread#" + i + " created and started.");
}
startSignal.countDown();
while (true)
{
log.info("Type s to stop and return to make the threads wait or to release them :");
line = reader.readLine();
if (line.equalsIgnoreCase("s"))
{
break;
}
else if (makeThemWait.get())
{
makeThemWait.set(false);
goSignal.countDown();
}
else
{
goSignal = new CountDownLatch(1);
makeThemWait.set(true);
}
}
stop = true;
}
else
{
log.info("Wait for data");
}
doneSignal.await();
System.exit(0);
}
private class WriterTask implements Runnable
{
private int id;
private Random random;
public WriterTask(int id) throws RepositoryException
{
this.id = id;
// login
CredentialsImpl credentials = new CredentialsImpl("admin", "admin".toCharArray());
Session sessionLocal = (SessionImpl)repository.login(credentials, "ws");
// prepare nodes
Node root = sessionLocal.getRootNode();
Node threadNode = root.addNode("Thread" + id);
threadNode.addNode(STATISTIC);
threadNode.addNode(CONTENT);
random = new Random();
sessionLocal.save();
sessionLocal.logout();
sessionLocal = null;
}
/**
* @see java.lang.Runnable#run()
*/
public void run()
{
try
{
startSignal.await();
while (!stop)
{
// get any word
int i = random.nextInt(words.length);
String word = words[i] + id; // "hello12" if thread#12 is creating it
Session sessionLocal = null;
try
{
CredentialsImpl credentials = new CredentialsImpl("admin", "admin".toCharArray());
sessionLocal = (SessionImpl)repository.login(credentials, "ws");
long time = System.currentTimeMillis();
// update statistic
updateStatistic((Node)sessionLocal.getItem("/Thread" + id + "/" + STATISTIC),word);
// add actual node
createTree((Node)sessionLocal.getItem("/Thread" + id + "/" + CONTENT)).addNode(word);
sessionLocal.save();
log.info("Time : " + (System.currentTimeMillis() - time));
}
catch (Exception e1)
{
if (sessionLocal != null)
{
// discard session changes
sessionLocal.refresh(false);
}
log.error("An error occurs", e1);
}
finally
{
if (sessionLocal != null)
{
sessionLocal.logout();
sessionLocal = null;
}
}
try
{
if (makeThemWait.get())
{
barrier.await();
log.info("The threads are waiting for the go signal, the current size of the cache is " + cache.getSize());
goSignal.await();
}
else
{
Thread.sleep(300);
}
}
catch (InterruptedException e)
{
}
}
}
catch (Exception e)
{
log.error("An unexpected error happens", e);
}
finally
{
doneSignal.countDown();
}
}
/**
* increments property in JCR: "./statistic/[word].count"
*
* @param word
* @throws RepositoryException
*/
private void updateStatistic(Node statisticNode, String word) throws RepositoryException
{
Node wordNode;
long count = 0;
if (statisticNode.hasNode(word))
{
wordNode = statisticNode.getNode(word);
count = wordNode.getProperty(COUNT).getLong();
}
else
{
wordNode = statisticNode.addNode(word);
}
wordNode.setProperty(COUNT, count + 1);
}
/**
* Created node tree like: "./content/n123456/n1234567/n12345678"
* based on current time
*
* @return
* @throws RepositoryException
*/
private Node createTree(Node contentNode) throws RepositoryException
{
// created node tree like: "./content/n123456/n1234567/n12345678"
Node end;
long time = System.currentTimeMillis();
long child1 = time / 100000; // each 100s new node
long child2 = time / 10000; // each 10s new node
long child3 = time / 1000; // each 1s new node
end = addOrCreate("n" + child1, contentNode);
end = addOrCreate("n" + child2, end);
end = addOrCreate("n" + child3, end);
return end;
}
/**
* Gets or creates node
*
* @param name
* @param parent
* @return
* @throws RepositoryException
*/
private Node addOrCreate(String name, Node parent) throws RepositoryException
{
if (parent.hasNode(name))
{
return parent.getNode(name);
}
else
return parent.addNode(name);
}
}
}