@Override
public boolean handleConnectorRequest(VaadinRequest request, VaadinResponse response, String path)
throws IOException {
Matcher matcher = Pattern.compile("(\\d+)(/.*)?").matcher(path);
if (!matcher.matches()) {
return super.handleConnectorRequest(request, response, path);
}
DownloadStream stream;
VaadinSession session = getSession();
session.lock();
try {
List<URLReference> sources = getState().sources;
int sourceIndex = Integer.parseInt(matcher.group(1));
if (sourceIndex < 0 || sourceIndex >= sources.size()) {
getLogger().log(Level.WARNING, "Requested source index {0} is out of bounds", sourceIndex);
return false;
}
URLReference reference = sources.get(sourceIndex);
ConnectorResource resource = (ConnectorResource) ResourceReference.getResource(reference);
stream = resource.getStream();
} finally {
session.unlock();
}
stream.writeResponse(request, response);
return true;
}