/*
* 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.impl.dataflow.persistent;
import org.exoplatform.services.jcr.JcrImplBaseTest;
import org.exoplatform.services.jcr.impl.dataflow.TransientValueData;
import org.exoplatform.services.jcr.impl.util.io.FileCleaner;
import org.exoplatform.services.jcr.impl.util.io.SwapFile;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.jcr.RepositoryException;
/**
* Created by The eXo Platform SAS.
*
* <br/>
* Date: 29.07.2009
*
* @author <a href="mailto:peter.nedonosko@exoplatform.com.ua">Peter Nedonosko</a>
* @version $Id: TestCleanableFileStreamValueData.java 34664 2009-07-29 16:33:52Z pnedonosko $
*/
public class TestCleanableFileStreamValueData extends JcrImplBaseTest
{
private static final int CLEANER_TIMEOUT = 4000; // 4sec
private static final String FILE_NAME = "testFileCleaned";
private File parentDir = new File("./target");
private File testFile = new File(parentDir, FILE_NAME);
private FileCleaner testCleaner;
private CleanableFilePersistedValueData cleanableValueData;
private static class TestSwapFile extends SwapFile
{
/**
* Dummy constructor.
*
* @param parent
* Fiel
* @param child
* String
*/
protected TestSwapFile(File parent, String child,FileCleaner cleaner)
{
super(parent, child,cleaner);
}
/**
* Clean inShare for tearDown.
*
*/
static void cleanShare()
{
CURRENT_SWAP_FILES.clear();
}
}
@Override
public void setUp() throws Exception
{
super.setUp();
testCleaner = new FileCleaner(CLEANER_TIMEOUT);
SwapFile sf = SwapFile.get(parentDir, FILE_NAME,testCleaner);
FileOutputStream fout = new FileOutputStream(sf);
fout.write("testFileCleaned".getBytes());
fout.close();
sf.spoolDone();
cleanableValueData = new CleanableFilePersistedValueData(1, sf, testCleaner);
}
@Override
protected void tearDown() throws Exception
{
cleanableValueData = null;
testCleaner.halt();
testCleaner = null;
if (testFile.exists())
{
testFile.delete();
}
TestSwapFile.cleanShare();
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
super.tearDown();
}
public void testFileCleaned() throws InterruptedException
{
assertTrue(testFile.exists());
cleanableValueData = null; // CleanableVD dies
// allows GC to call finalize on vd
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
assertFalse(testFile.exists()); // file released and deleted
}
public void testSharedFileNotCleaned() throws InterruptedException, IOException
{
assertTrue(testFile.exists());
System.gc();
Thread.sleep(CLEANER_TIMEOUT / 2);
CleanableFilePersistedValueData cfvd2 =
new CleanableFilePersistedValueData(1, SwapFile.get(parentDir, FILE_NAME,testCleaner), testCleaner);
assertTrue(testFile.exists());
cleanableValueData = null; // CleanableVD dies but another instance points swapped file
// allows GC to call finalize on vd
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
assertTrue(testFile.exists());
// clean ValueData
cfvd2 = null;
// allows GC to call finalize on vd
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
assertFalse(testFile.exists());
}
public void testTransientFileNotCleaned() throws InterruptedException, IOException, RepositoryException
{
assertTrue(testFile.exists());
System.gc();
Thread.sleep(CLEANER_TIMEOUT / 2);
TransientValueData trvd = cleanableValueData.createTransientCopy();
assertTrue(testFile.exists());
trvd = null; // TransientVD dies
// allows GC to call finalize on vd
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
assertTrue(testFile.exists()); // but Swapped CleanableVD lives and uses the file
}
public void testTransientFileCleaned() throws InterruptedException, IOException, RepositoryException
{
assertTrue(testFile.exists());
System.gc();
Thread.sleep(CLEANER_TIMEOUT / 2);
TransientValueData trvd = cleanableValueData.createTransientCopy();
assertTrue(testFile.exists());
cleanableValueData = null; // CleanableVD dies but TransientVD still uses swapped file
// allows GC to work
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
assertTrue(testFile.exists());
trvd = null; // TransientVD dies
// allows GC to call finalize on vd
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
assertFalse(testFile.exists()); // swapped file deleted
}
public void testTransientSharedFileCleaned() throws InterruptedException, IOException, RepositoryException
{
assertTrue(testFile.exists());
System.gc();
Thread.sleep(CLEANER_TIMEOUT / 2);
// file shared with TransientVD
TransientValueData trvd = cleanableValueData.createTransientCopy();
assertTrue(testFile.exists());
// 1st CleanableVD die
cleanableValueData = null;
// allows GC to work
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
// file shared with third CleanableVD, i.e. file still exists (aquired by TransientVD)
CleanableFilePersistedValueData cfvd2 =
new CleanableFilePersistedValueData(1, SwapFile.get(parentDir, FILE_NAME,testCleaner), testCleaner);
assertTrue(testFile.exists());
trvd = null; // TransientVD dies
// allows GC to work
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
assertTrue(testFile.exists()); // still exists, aquired by 2nd CleanableVD
cfvd2 = null; // 2nd CleanableVD dies
// allows GC to work
System.gc();
Thread.sleep(CLEANER_TIMEOUT + 500);
Thread.yield();
System.gc();
assertFalse(testFile.exists()); // file should be deleted
}
}