/*
* 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.ext.replication.recovery;
import org.exoplatform.services.jcr.dataflow.TransactionChangesLog;
import org.exoplatform.services.jcr.dataflow.serialization.UnknownClassIdException;
import org.exoplatform.services.jcr.impl.dataflow.serialization.ObjectReaderImpl;
import org.exoplatform.services.jcr.impl.dataflow.serialization.ReaderSpoolFileHolder;
import org.exoplatform.services.jcr.impl.dataflow.serialization.TransactionChangesLogReader;
import org.exoplatform.services.jcr.impl.util.io.FileCleaner;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
/**
* Created by The eXo Platform SAS.
*
* @author <a href="mailto:alex.reshetnyak@exoplatform.com.ua">Alex Reshetnyak</a>
* @version $Id: RecoveryReader.java 34445 2009-07-24 07:51:18Z dkatayev $
*/
public class RecoveryReader extends AbstractFSAccess
{
/**
* The apache logger.
*/
private static Log log = ExoLogger.getLogger("exo.jcr.component.ext.RecoveryReader");
/**
* The FileCleaner for delete the temporary files and correct TransientValueData deserialization.
*/
private FileCleaner fileCleaner;
/**
* For deserialization.
*/
private int maxBufferSize;
/**
* For deserialization.
*/
private ReaderSpoolFileHolder holder;
/**
* Definition the folder to ChangesLog.
*/
private File recoveryDir;
/**
* RecoveryReader constructor.
*
* @param fileCleaner
* the FileCleaner
* @param recoveryDir
* the recoveryDir
* @param maxBufferSize
* the max buffer size
* @param holder
* ReaderSpoolFileHolder, the reader spool file holder
*/
public RecoveryReader(FileCleaner fileCleaner, File recoveryDir, int maxBufferSize, ReaderSpoolFileHolder holder)
{
this.fileCleaner = fileCleaner;
this.maxBufferSize = maxBufferSize;
this.holder = holder;
this.recoveryDir = recoveryDir;
}
/**
* getChangesLog.
*
* @param filePath
* full path to binary ChangesLog
* @return TransactionChangesLog return the TransactionChangesLog
* @throws IOException
* will be generated the IOException
* @throws ClassNotFoundException
* will be generated the ClassNotFoundException
*/
public TransactionChangesLog getChangesLog(String filePath) throws IOException, ClassNotFoundException
{
ObjectReaderImpl in = new ObjectReaderImpl(new FileInputStream(filePath));
TransactionChangesLogReader rdr = new TransactionChangesLogReader(fileCleaner, maxBufferSize, holder);
TransactionChangesLog tcl;
try
{
tcl = rdr.read(in);
}
catch (UnknownClassIdException e)
{
throw new ClassNotFoundException(e.getMessage(), e);
}
in.close();
return tcl;
}
/**
* getFilePathList.
*
* @param timeStamp
* up to date
* @param ownName
* owner name
* @return List list of binary changes log up to date
* @throws IOException
* will be generated IOException if fail.
*/
public List<String> getFilePathList(Calendar timeStamp, String ownName) throws IOException
{
File dataInfo = new File(recoveryDir.getAbsolutePath() + File.separator + ownName);
List<String> list = new ArrayList<String>();
if (dataInfo.exists())
{
BufferedReader br = new BufferedReader(new FileReader(dataInfo));
String sPath;
while ((sPath = br.readLine()) != null)
{
if (sPath.startsWith(PREFIX_REMOVED_DATA) == false)
{
File f = new File(sPath);
Calendar time = getTimeStamp(f.getName());
if (timeStamp.after(time))
{
list.add(sPath);
if (log.isDebugEnabled())
log.debug(sPath);
}
else
break;
}
}
}
return list;
}
/**
* getTimeStamp.
*
* @param fileName
* name of file
* @return Calendar TimeStamp from file name
*/
private Calendar getTimeStamp(String fileName)
{
// 20080415_090302_824_50e4cf9d7f000001009bb457938f425b
DateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmss_SSS");
Calendar timeStamp = Calendar.getInstance();
try
{
timeStamp.setTime(dateFormat.parse(fileName));
}
catch (ParseException e)
{
log.error("Can't parce date", e);
}
return timeStamp;
}
}