targetFileChannel = exchange.getConnection().getWorker().getXnio().openFile(tempTarget, FileAccess.READ_WRITE);
sourceFileChannel = exchange.getConnection().getWorker().getXnio().openFile(file, FileAccess.READ_ONLY);
StreamSinkConduit conduit = encoding.getEncoding().getResponseWrapper().wrap(new ImmediateConduitFactory<StreamSinkConduit>(new FileConduitTarget(targetFileChannel, exchange)), exchange);
final ConduitStreamSinkChannel targetChannel = new ConduitStreamSinkChannel(null, conduit);
long transfered = sourceFileChannel.transferTo(0, resource.getContentLength(), targetChannel);
targetChannel.shutdownWrites();
org.xnio.channels.Channels.flushBlocking(targetChannel);
if (transfered != resource.getContentLength()) {
UndertowLogger.REQUEST_LOGGER.error("Failed to write pre-cached file");
}
tempTarget.renameTo(finalTarget);