/*
* Syncany, www.syncany.org
* Copyright (C) 2011-2014 Philipp C. Heckel <philipp.heckel@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.syncany.operations.daemon.messages;
import java.io.File;
import java.util.HashSet;
import java.util.Map;
import java.util.logging.Level;
import org.syncany.config.Config;
import org.syncany.config.LocalEventBus;
import org.syncany.database.FileContent;
import org.syncany.database.FileVersion;
import org.syncany.database.ObjectId;
import org.syncany.database.ChunkEntry.ChunkChecksum;
import org.syncany.database.MultiChunkEntry.MultiChunkId;
import org.syncany.database.PartialFileHistory.FileHistoryId;
import org.syncany.database.SqlDatabase;
import org.syncany.operations.Assembler;
import org.syncany.operations.Downloader;
import org.syncany.operations.daemon.messages.api.FolderRequest;
import org.syncany.operations.daemon.messages.api.FolderRequestHandler;
import org.syncany.operations.daemon.messages.api.Response;
import org.syncany.plugins.transfer.TransferManager;
import org.syncany.util.StringUtil;
public class GetFileFolderRequestHandler extends FolderRequestHandler {
private SqlDatabase localDatabase;
private LocalEventBus eventBus;
public GetFileFolderRequestHandler(Config config) {
super(config);
this.localDatabase = new SqlDatabase(config);
this.eventBus = LocalEventBus.getInstance();
}
@Override
public Response handleRequest(FolderRequest request) {
GetFileFolderRequest concreteRequest = (GetFileFolderRequest) request;
try {
FileHistoryId fileHistoryId = FileHistoryId.parseFileId(concreteRequest.getFileHistoryId());
long version = concreteRequest.getVersion();
FileVersion fileVersion = localDatabase.getFileVersion(fileHistoryId, version);
FileContent fileContent = localDatabase.getFileContent(fileVersion.getChecksum(), true);
Map<ChunkChecksum, MultiChunkId> multiChunks = localDatabase.getMultiChunkIdsByChecksums(fileContent.getChunks());
TransferManager transferManager = config.getTransferPlugin().createTransferManager(config.getConnection(), config);
Downloader downloader = new Downloader(config, transferManager);
Assembler assembler = new Assembler(config, localDatabase);
downloader.downloadAndDecryptMultiChunks(new HashSet<MultiChunkId>(multiChunks.values()));
File tempFile = assembler.assembleToCache(fileVersion);
String tempFileToken = StringUtil.toHex(ObjectId.secureRandomBytes(40));
GetFileFolderResponse fileResponse = new GetFileFolderResponse(concreteRequest.getId(), concreteRequest.getRoot(), tempFileToken);
GetFileFolderResponseInternal fileResponseInternal = new GetFileFolderResponseInternal(fileResponse, tempFile);
eventBus.post(fileResponseInternal);
return null;
}
catch (Exception e) {
logger.log(Level.WARNING, "Cannot reassemble file.", e);
return new BadRequestResponse(concreteRequest.getId(), "Cannot reassemble file.");
}
}
}