/*
* 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.java;
import junit.framework.TestCase;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.FileLock;
/**
* Created by The eXo Platform SAS.
*
* <br>
* Date: 31.03.2009
*
* @author <a href="mailto:peter.nedonosko@exoplatform.com.ua">Peter Nedonosko</a>
* @version $Id: TestFileLock.java 111 2008-11-11 11:11:11Z pnedonosko $
*/
public class TestFileLock extends TestCase
{
public void _testSameJVMlLock() throws IOException, InterruptedException
{
File f = new File("\\\\storm\\public\\file1.tmp");
f.createNewFile();
FileOutputStream fout = new FileOutputStream(f);
FileChannel fc = fout.getChannel();
ByteBuffer buff = ByteBuffer.wrap("test-file1".getBytes());
fc.write(buff);
fc.close();
// reopen
FileInputStream fin = new FileInputStream(f);
fc = fin.getChannel();
byte[] b = new byte[256];
ByteBuffer dst = ByteBuffer.wrap(b);
int res = fc.read(dst);
if (res > 0)
System.out.println(new String(b, 0, res));
// lock file
fout = new FileOutputStream(f);
fc = fout.getChannel();
FileLock lock = fc.lock();
assertTrue(lock.isValid());
// check another lock
Thread another = new Thread()
{
public void run()
{
try
{
Thread.sleep(25);
FileOutputStream fout1 = new FileOutputStream(new File("\\\\storm\\public\\file1.tmp"));
FileChannel fc1 = fout1.getChannel();
try
{
FileLock lock1 = fc1.lock();
System.out.println("Another locked " + System.currentTimeMillis());
Thread.sleep(10000);
lock1.release();
System.out.println("Another released " + System.currentTimeMillis());
}
finally
{
fc1.close();
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
};
another.start();
System.out.println("Another started " + System.currentTimeMillis());
// ////////////////////
Thread.sleep(2000);
lock.release();
fc.close();
// print final content
fin = new FileInputStream(f);
fc = fin.getChannel();
res = -1;
dst = ByteBuffer.wrap(b);
try
{
res = fc.read(dst);
}
catch (IOException e)
{
e.printStackTrace();
}
if (res > 0)
System.out.println(new String(b, 0, res));
}
public void _testDifferentJVMLock() throws IOException, InterruptedException
{
final long timeout = Long.valueOf(System.getProperty("exo.jcr.lab.testFileLockTimeout", "20000"));
// File f = new File("\\\\storm\\public\\file2.tmp");
File f = new File("D:\\tmp\\file2.tmp");
System.out.println("Try open file for write " + System.currentTimeMillis());
FileOutputStream fout = new FileOutputStream(f);
FileChannel fc = fout.getChannel();
System.out.println("Try lock file " + System.currentTimeMillis());
FileLock lock = fc.lock();
System.out.println("File locked " + System.currentTimeMillis());
assertTrue(lock.isValid());
Thread.sleep(timeout);
ByteBuffer buff = ByteBuffer.wrap("test-file2".getBytes());
fc.write(buff);
// release and close
lock.release();
fc.close();
System.out.println("File written and closed " + System.currentTimeMillis());
// reopen for read
Thread.sleep(timeout);
System.out.println("Try read file " + System.currentTimeMillis());
FileInputStream fin = new FileInputStream(f);
fc = fin.getChannel();
System.out.println("Try shared lock " + System.currentTimeMillis());
FileLock shlock = fc.lock(0, fc.size(), true);
System.out.println("File locked shared " + System.currentTimeMillis());
byte[] b = new byte[256];
ByteBuffer dst = ByteBuffer.wrap(b);
int res = fc.read(dst);
if (res > 0)
System.out.println(new String(b, 0, res));
shlock.release();
System.out.println("Read file OK " + System.currentTimeMillis());
fc.close();
// lock file for write
Thread.sleep(timeout);
System.out.println("Try open file for write " + System.currentTimeMillis());
fout = new FileOutputStream(f);
fc = fout.getChannel();
System.out.println("Try lock file " + System.currentTimeMillis());
lock = fc.lock();
System.out.println("File locked " + System.currentTimeMillis());
assertTrue(lock.isValid());
buff = ByteBuffer.wrap("test-file2 new content".getBytes());
fc.write(buff);
Thread.sleep(timeout);
lock.release();
System.out.println("File released " + System.currentTimeMillis());
Thread.sleep(timeout);
fc.close();
System.out.println("File closed " + System.currentTimeMillis());
// print final content
Thread.sleep(timeout);
System.out.println("Try read file " + System.currentTimeMillis());
fin = new FileInputStream(f);
fc = fin.getChannel();
System.out.println("Try shared lock " + System.currentTimeMillis());
shlock = fc.lock(0, fc.size(), true);
System.out.println("File locked shared " + System.currentTimeMillis());
b = new byte[256];
dst = ByteBuffer.wrap(b);
res = -1;
if (res > 0)
System.out.println(new String(b, 0, res));
shlock.release();
System.out.println("Read file OK " + System.currentTimeMillis());
fc.close();
}
public void _testDifferentJVMReadLock() throws IOException, InterruptedException
{
final long timeout = Long.valueOf(System.getProperty("exo.jcr.lab.testFileLockTimeout", "20000"));
// File f = new File("\\\\storm\\public\\file3.tmp");
File f = new File("D:\\tmp\\file3.tmp");
// write new content
System.out.println("Try open file for write " + System.currentTimeMillis());
FileOutputStream fout = new FileOutputStream(f);
FileChannel fc = fout.getChannel();
System.out.println("Try lock file " + System.currentTimeMillis());
FileLock lock = fc.lock();
System.out.println("File locked " + System.currentTimeMillis());
assertTrue(lock.isValid());
ByteBuffer buff = ByteBuffer.wrap("test-file3".getBytes());
fc.write(buff);
lock.release();
fc.close();
System.out.println("File prepared " + System.currentTimeMillis());
// reopen for read
Thread.sleep(timeout);
System.out.println("Try read file " + System.currentTimeMillis());
FileInputStream fin = new FileInputStream(f);
fc = fin.getChannel();
System.out.println("Try shared lock " + System.currentTimeMillis());
FileLock shlock = fc.lock(0, fc.size(), true);
System.out.println("File locked shared " + System.currentTimeMillis());
byte[] b = new byte[256];
ByteBuffer dst = ByteBuffer.wrap(b);
int res = fc.read(dst);
if (res > 0)
System.out.println(new String(b, 0, res));
System.out.println("Read file OK " + System.currentTimeMillis());
Thread.sleep(timeout);
shlock.release();
System.out.println("File shared lock released " + System.currentTimeMillis());
Thread.sleep(timeout);
fc.close();
System.out.println("File closed " + System.currentTimeMillis());
}
public void testInputStreamLock() throws IOException, InterruptedException
{
// File f = new File("\\\\storm\\public\\file3.tmp");
File f = new File("D:\\tmp\\file4.tmp");
// write new content
System.out.println("Try open file for read " + System.currentTimeMillis());
FileInputStream fin = new FileInputStream(f);
FileChannel fc = fin.getChannel();
System.out.println("Try lock file " + System.currentTimeMillis());
fin.read();
fin.close();
}
}