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/*******************************************************************************
* Copyright (c) 2006, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Initial Contributors:
* The following IBM employees contributed to the Remote System Explorer
* component that contains this file: David McKnight, Kushal Munir,
* Michael Berger, David Dykstal, Phil Coulthard, Don Yantzi, Eric Simpson,
* Emily Bruner, Mazen Faraj, Adrian Storisteanu, Li Ding, and Kent Hawley.
*
* Contributors:
* Xuan Chen (IBM) - [160775] [api] rename (at least within a zip) blocks UI thread
* Noriaki Takatsu (IBM) - [220126] [dstore][api][breaking] Single process server for multiple clients
*******************************************************************************/
package org.eclipse.rse.internal.dstore.universal.miners.filesystem;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import org.eclipse.dstore.core.model.DE;
import org.eclipse.dstore.core.model.DataElement;
import org.eclipse.dstore.core.model.DataStore;
import org.eclipse.dstore.core.model.IByteConverter;
import org.eclipse.rse.dstore.universal.miners.ICancellableHandler;
import org.eclipse.rse.dstore.universal.miners.IUniversalDataStoreConstants;
import org.eclipse.rse.dstore.universal.miners.UniversalFileSystemMiner;
import org.eclipse.rse.dstore.universal.miners.UniversalServerUtilities;
import org.eclipse.rse.services.clientserver.IServiceConstants;
import org.eclipse.rse.services.clientserver.archiveutils.AbsoluteVirtualPath;
import org.eclipse.rse.services.clientserver.archiveutils.ISystemArchiveHandler;
import org.eclipse.rse.services.clientserver.archiveutils.VirtualChild;
import org.eclipse.dstore.core.server.SecuredThread;
public class UniversalDownloadHandler extends SecuredThread implements ICancellableHandler
{
private boolean _isDone = false;
private UniversalFileSystemMiner _miner;
private DataElement _status;
private DataElement _cmdElement;
private boolean _isCancelled= false;
public UniversalDownloadHandler(DataStore dataStore, UniversalFileSystemMiner miner, DataElement cmdElement,
DataElement status)
{
super(dataStore);
_miner = miner;
_status = status;
_cmdElement = cmdElement;
}
public void run()
{
super.run();
handleDownload(_cmdElement, _status);
_isDone = true;
}
public boolean isDone()
{
return _isDone;
}
public boolean isCancelled()
{
return _isCancelled;
}
public void cancel()
{
_dataStore.trace("cancelling download"); //$NON-NLS-1$
_isCancelled = true;
}
protected DataElement handleDownload(DataElement theElement, DataElement status)
{
DataElement arg1 = _miner.getCommandArgument(theElement, 1);
String elementType = arg1.getType();
String remotePath = arg1.getName();
int buffer_size = IUniversalDataStoreConstants.BUFFER_SIZE;
DataElement bufferSizeElement = _dataStore.find(theElement, DE.A_TYPE, "buffer_size", 1); //$NON-NLS-1$
if (bufferSizeElement != null)
{
try
{
buffer_size = Integer.parseInt(bufferSizeElement.getName());
}
catch (Exception e)
{
}
}
String resultType = null;
String resultMessage = null;
FileInputStream inputStream = null;
BufferedInputStream bufInputStream = null;
try
{
if (elementType.equals(IUniversalDataStoreConstants.UNIVERSAL_FILE_DESCRIPTOR) || elementType.equals(IUniversalDataStoreConstants.UNIVERSAL_ARCHIVE_FILE_DESCRIPTOR) || elementType.equals(IUniversalDataStoreConstants.UNIVERSAL_VIRTUAL_FILE_DESCRIPTOR))
{
_dataStore.trace("download:" + remotePath + "," + elementType); //$NON-NLS-1$ //$NON-NLS-2$
File file = new File(remotePath);
if (elementType.equals(IUniversalDataStoreConstants.UNIVERSAL_VIRTUAL_FILE_DESCRIPTOR))
{
AbsoluteVirtualPath vpath = _miner.getAbsoluteVirtualPath(remotePath);
ISystemArchiveHandler handler = _miner.getArchiveHandlerFor(vpath.getContainingArchiveString());
if (handler == null)
{
status.setAttribute(DE.A_SOURCE, IServiceConstants.FAILED);
resultType = IUniversalDataStoreConstants.DOWNLOAD_RESULT_IO_EXCEPTION;
resultMessage = "Corrupted archive."; //$NON-NLS-1$
_isDone = true;
_dataStore.createObject(arg1, resultType, resultMessage);
_dataStore.refresh(arg1);
return _miner.statusDone(status);
}
VirtualChild vChild = handler.getVirtualFile(vpath.getVirtualPart(), null);
file = vChild.getExtractedFile();
}
DataElement arg2 = _miner.getCommandArgument(theElement, 2);
// DataElement arg3 = _miner.getCommandArgument(theElement, 3);
_miner.getCommandArgument(theElement, 3);
int mode = (Integer.valueOf(arg1.getSource())).intValue();
String localPath = arg2.getName();
boolean isText = (mode == IUniversalDataStoreConstants.TEXT_MODE);
// String clientEncoding = null;
if (isText)
{
// clientEncoding = arg2.getSource();
arg2.getSource();
}
// Read in the file
inputStream = new FileInputStream(file);
bufInputStream = new BufferedInputStream(inputStream, buffer_size);
int totalBytes = (int)file.length();
int totalWritten = 0;
boolean first = true;
byte[] buffer = new byte[buffer_size];
byte[] convBytes;
int numToRead = 0;
IByteConverter byteConverter = _dataStore.getByteConverter();
byteConverter.setContext(file);
int available = bufInputStream.available();
while (available > 0 && !_isCancelled)
{
numToRead = (available < buffer_size) ? available : buffer_size;
int bytesRead = bufInputStream.read(buffer, 0, numToRead);
if (bytesRead == -1)
break;
if (isText)
{
convBytes = byteConverter.convertHostBytesToClientBytes(buffer, 0, bytesRead);
if (first)
{ // send first set of bytes
first = false;
_dataStore.updateFile(localPath, convBytes, convBytes.length, true);
}
else
{ // append subsequent segments
_dataStore.updateAppendFile(localPath, convBytes, convBytes.length, true);
}
totalWritten += convBytes.length;
}
else
{
if (first)
{ // send first set of bytes
first = false;
_dataStore.updateFile(localPath, buffer, bytesRead, true);
}
else
{ // append subsequent segments
_dataStore.updateAppendFile(localPath, buffer, bytesRead, true);
}
totalWritten +=bytesRead;
}
status.setAttribute(DE.A_SOURCE, "sent "+totalWritten + " of "+totalBytes); //$NON-NLS-1$ //$NON-NLS-2$
_dataStore.refresh(status);
available = bufInputStream.available();
}
resultType = IUniversalDataStoreConstants.DOWNLOAD_RESULT_SUCCESS_TYPE;
resultMessage = IUniversalDataStoreConstants.DOWNLOAD_RESULT_SUCCESS_MESSAGE;
}
}
catch (FileNotFoundException e)
{
UniversalServerUtilities.logError(UniversalFileSystemMiner.CLASSNAME, "handleDownload: error reading file " + remotePath, e, _dataStore); //$NON-NLS-1$
resultType = IUniversalDataStoreConstants.DOWNLOAD_RESULT_FILE_NOT_FOUND_EXCEPTION;
resultMessage = e.getLocalizedMessage();
}
catch (UnsupportedEncodingException e)
{
UniversalServerUtilities.logError(UniversalFileSystemMiner.CLASSNAME, "handleDownload: error reading file " + remotePath, e, _dataStore); //$NON-NLS-1$
resultType = IUniversalDataStoreConstants.DOWNLOAD_RESULT_UNSUPPORTED_ENCODING_EXCEPTION;
resultMessage = e.getLocalizedMessage();
}
catch (IOException e)
{
UniversalServerUtilities.logError(UniversalFileSystemMiner.CLASSNAME, "handleDownload: error reading file " + remotePath, e, _dataStore); //$NON-NLS-1$
resultType = IUniversalDataStoreConstants.DOWNLOAD_RESULT_IO_EXCEPTION;
resultMessage = e.getLocalizedMessage();
}
catch (Exception e)
{
UniversalServerUtilities.logError(UniversalFileSystemMiner.CLASSNAME, "handleDownload: error reading file " + remotePath, e, _dataStore); //$NON-NLS-1$
resultType = IUniversalDataStoreConstants.DOWNLOAD_RESULT_EXCEPTION;
resultMessage = e.getLocalizedMessage();
}
finally
{
try
{
if (bufInputStream != null)
bufInputStream.close();
}
catch (IOException e)
{
UniversalServerUtilities.logError(UniversalFileSystemMiner.CLASSNAME, "handleDownload: error closing reader on " + remotePath, e, _dataStore); //$NON-NLS-1$
resultType = IUniversalDataStoreConstants.DOWNLOAD_RESULT_IO_EXCEPTION;
resultMessage = e.getMessage();
}
}
_isDone = true;
_dataStore.createObject(arg1, resultType, resultMessage);
_dataStore.refresh(arg1);
return _miner.statusDone(status);
}
}
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