public void process(final Resource resource, final Reader reader, final Writer writer)
throws IOException {
final String content = IOUtils.toString(reader);
final SassCss engine = enginePool.getObject();
try {
writer.write(engine.process(content));
} catch (final WroRuntimeException e) {
final String resourceUri = resource == null ? StringUtils.EMPTY : "[" + resource.getUri() + "]";
LOG.error("Exception while applying " + SassCss.class.getClass().getSimpleName() + " processor on the " + resourceUri
+ " resource, no processing applied...", e);
onException(e);