private static boolean error(VaadinRequest request, VaadinResponse response, String logMessage)
throws IOException {
getLogger().log(Level.WARNING, logMessage);
response.sendError(
HttpServletResponse.SC_NOT_FOUND, request.getPathInfo() + " can not be found");
// Request handled (though not in a nice way)
return true;
}
@Override
public boolean handleRequest(
VaadinSession session, VaadinRequest request, VaadinResponse response) throws IOException {
String pathInfo = request.getPathInfo();
if (pathInfo == null) {
return false;
}
Matcher matcher = pattern.matcher(pathInfo);
if (!matcher.matches()) {
return false;
}
String uiid = matcher.group(1);
String type = matcher.group(3);
String key = matcher.group(2);
if (key == null) {
return error(request, response, pathInfo + " is not a valid global resource path");
}
UI ui = session.getUIById(Integer.parseInt(uiid));
if (ui == null) {
return error(request, response, "No UI found for id " + uiid);
}
UI.setCurrent(ui);
ConnectorResource resource;
if (LEGACY_TYPE.equals(type)) {
resource = legacyResources.get(key);
} else {
return error(
request,
response,
"Unknown global resource type " + type + " in requested path " + pathInfo);
}
if (resource == null) {
return error(request, response, "Global resource " + key + " not found");
}
DownloadStream stream = resource.getStream();
if (stream == null) {
return error(request, response, "Resource " + resource + " didn't produce any stream.");
}
stream.writeResponse(request, response);
return true;
}
