private void handleGetFileRequest(GetFileRequest fileRequest) {
try {
FileHistoryId fileHistoryId = FileHistoryId.parseFileId(fileRequest.getFileHistoryId());
long version = fileRequest.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());
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));
GetFileResponse fileResponse =
new GetFileResponse(fileRequest.getId(), fileRequest.getRoot(), tempFileToken);
GetFileResponseInternal fileResponseInternal =
new GetFileResponseInternal(fileResponse, tempFile);
eventBus.post(fileResponseInternal);
} catch (Exception e) {
logger.log(Level.WARNING, "Cannot reassemble file.", e);
eventBus.post(new BadRequestResponse(fileRequest.getId(), "Cannot reassemble file."));
}
}
@Override
public OperationResult execute() throws Exception {
logger.log(Level.INFO, "Determine file system actions ...");
FileSystemActionReconciliator actionReconciliator =
new FileSystemActionReconciliator(config, result.getChangeSet());
List<FileSystemAction> actions;
if (cleanupOccurred) {
actions =
actionReconciliator.determineFileSystemActions(
winnersDatabase, true, preDeleteFileHistoriesWithLastVersion);
} else {
actions = actionReconciliator.determineFileSystemActions(winnersDatabase);
}
Set<MultiChunkId> unknownMultiChunks = determineRequiredMultiChunks(actions, winnersDatabase);
downloader.downloadAndDecryptMultiChunks(unknownMultiChunks);
result.getDownloadedMultiChunks().addAll(unknownMultiChunks);
applyFileSystemActions(actions);
return null;
}
