/**
* This method checks whether the instance of the class was initialized properly.
*
* @throws OPMConfigurationException if the instance was not initialized properly(widgetIds is
* null or contains null/empty element; securityService or userService is null; userSessionKey
* is null/empty).
*/
@PostConstruct
protected void checkInit() {
Helper.checkState(widgetIds == null, "'widgetIds' can't be null.");
for (String widgetId : widgetIds) {
Helper.checkState(
WebHelper.isNullOrEmpty(widgetId), "'widgetIds' can't contain null/empty element.");
}
Helper.checkState(securityService == null, "'securityService' can't be null.");
Helper.checkState(userService == null, "'userService' can't be null.");
Helper.checkState(
WebHelper.isNullOrEmpty(userSessionKey), "'userSessionKey' can't be null/empty.");
}
/**
* Retrieves the current logged user based on the session key.
*
* @param session http session holding currently logged username.
* @return User instance representing currently logged user.
* @throws IllegalArgumentException if session is null.
* @throws OPMException if there is any problem when executing the method.
*/
protected User getCurrentUser(HttpSession session) throws OPMException {
String signature = CLASS_NAME + "#getCurrentUser(HttpSession session)";
LoggingHelper.logEntrance(logger, signature, new String[] {"session"}, new Object[] {session});
Helper.checkNull(logger, signature, session, "session");
try {
String loggedUsername = (String) session.getAttribute(userSessionKey);
User result = userService.getByUsername(loggedUsername);
LoggingHelper.logExit(logger, signature, new Object[] {result});
return result;
} catch (IllegalArgumentException e) {
throw LoggingHelper.logException(
logger,
signature,
new OPMException(
"The attribute of key '" + userSessionKey + "' can't be null/empty.", e));
} catch (ClassCastException e) {
throw LoggingHelper.logException(
logger,
signature,
new OPMException("The attribute of key '" + userSessionKey + "' should be a string.", e));
}
}
/**
* This method is responsible for populating the model and view with the data about enabled
* widgets.
*
* @param session current http session.
* @param modelAndView the ModelAndView instance to populate
* @return The populated ModelAndView instance.
* @throws IllegalArgumentException if session or modelAndView instance is null.
* @throws OPMException if there is any problem when executing the method.
*/
protected ModelAndView populateModelAndView(HttpSession session, ModelAndView modelAndView)
throws OPMException {
String signature =
CLASS_NAME + "#populateModelAndView(HttpSession session, ModelAndView modelAndView)";
LoggingHelper.logEntrance(
logger,
signature,
new String[] {"session", "modelAndView"},
new Object[] {session, modelAndView});
Helper.checkNull(logger, signature, modelAndView, "modelAndView");
User user = getCurrentUser(session);
if (user == null) {
throw LoggingHelper.logException(
logger, signature, new OPMException("The user is not logged in."));
}
for (String widgetId : widgetIds) {
try {
securityService.authorize(
user.getUsername(), Arrays.asList(user.getRole().getName()), widgetId);
modelAndView.addObject(widgetId, true);
} catch (AuthorizationException e) {
modelAndView.addObject(widgetId, false);
}
}
LoggingHelper.logExit(logger, signature, new Object[] {modelAndView});
return modelAndView;
}