@Override
public void execute(Controller controller) {
FSImage fsi = controller.fsImages.get(fsiUuid);
cm = controller.getCommandManager();
FileTransferManager ftm = controller.getFileTransferManager();
if (!fsi.isLocal()) {
String message = "No such FSImage on the target side";
failed(new IllegalStateException(), message);
return;
}
Path pathToRoot = fsi.getPathToRoot();
Path fullPath = pathToRoot.resolve(path.toPath());
// save memo about this operation on the target side
ftm.addTarget(operationUuid, fullPath);
try (RandomAccessFile f = new RandomAccessFile(fullPath.toFile(), "rw")) {
f.setLength(size);
// will send next command to the source
cm.sendCommand(new QueryDownloadFile(operationUuid));
} catch (IOException e) {
String message = String.format("Allocation memory failed: \r\n %s", e.toString());
failed(e, message);
}
}
@Override
public SerializableCommand fromString(String representation) {
String groupSeparator = "\u001E";
StringTokenizer st = new StringTokenizer(representation, groupSeparator, false);
String fsiUuid = st.nextToken();
long size = Long.parseLong(st.nextToken());
String sourceId = st.nextToken();
String pathAsString = st.nextToken();
PseudoPath path = PseudoPath.deserialize(pathAsString);
return new AllocateSpace(fsiUuid, path, size, sourceId);
}
@Override
public String getStringRepresentation() {
StringBuilder builder = new StringBuilder();
char groupSeparator = '\u001E';
builder.append(fsiUuid);
builder.append(groupSeparator);
builder.append(size);
builder.append(groupSeparator);
builder.append(operationUuid);
builder.append(groupSeparator);
builder.append(path.serializeToString());
return builder.toString();
}