private void handleRemoveFeedPost(Request request, HttpServletResponse httpServletResponse)
throws Exception {
LOG.info("removing feed");
User user = userHelpers.getUser(request);
try {
if (user == null) {
LOG.error("User not found");
return;
}
String feedId = request.getParameter(PARAM_FEED_ID);
LOG.info(String.format("Removing feed %s for user %s", feedId, user));
// ttt1 add some validation; probably best try to actually get data, set the title, ...
if (feedId == null || feedId.equals("")) {
LOG.error("feed not specified");
// ttt1 show some error
return;
}
if (user.feedIds.remove(
feedId)) { // ttt2 clean up the global feed table; that's probably better done if nobody
// accesses a feed for 3 months or so
userDb.updateFeeds(user);
LOG.info(String.format("Removed feed %s for user %s", feedId, user));
} else {
LOG.info(String.format("No feed found with ID %s for user %s", feedId, user));
}
} finally {
httpServletResponse.sendRedirect(PATH_FEED_ADMIN);
}
}
private void handleAddFeedPost(Request request, HttpServletResponse httpServletResponse)
throws Exception {
LOG.info("adding feed");
User user = userHelpers.getUser(request);
try {
if (user == null) {
LOG.error("User not found");
return;
}
String url = request.getParameter(PARAM_NEW_FEED_URL);
// ttt1 add some validation; probably best try to actually get data, set the title, ...
if (url == null || url.equals("")) {
LOG.error("New feed not specified");
// ttt1 show some error
return;
}
MessageDigest digest = MessageDigest.getInstance("MD5");
String feedId = PrintUtils.byteArrayAsUrlString(digest.digest(url.getBytes("UTF-8")));
feedId = feedId.substring(0, Config.getConfig().feedIdSize);
Feed feed = feedDb.get(feedId);
if (feed == null) {
feed = new Feed(feedId, url);
feedDb.add(feed);
}
if (user.feedIds.contains(feedId)) {
LOG.error(String.format("Trying to add existing feed %s to user %s", feedId, user));
} else {
user.feedIds.add(feedId);
userDb.updateFeeds(user);
}
} finally {
httpServletResponse.sendRedirect(PATH_FEED_ADMIN);
}
}