@RequestMapping(value = VIDEO_SEARCH_PATH, method = RequestMethod.GET)
public @ResponseBody String[] searchVideo(
@RequestParam(value = "username") String uName,
@RequestParam(value = "video") String videoHash,
HttpServletResponse response) {
System.out.println("Search from:" + uName);
if (!user_vidNameMap.containsKey(uName)) {
response.setStatus(402); // client not connected
return null;
}
Set<String> users = vidName_UserMap.get(videoHash);
if (users == null) {
System.out.println("Srearching main server\n");
try {
users = masterService.psSearch(hostAdder, videoHash);
} catch (Exception e) {
System.err.println(e.getMessage());
return null;
}
if (users == null) return null;
if (vidName_UserMap.containsKey(videoHash)) {
vidName_UserMap.get(videoHash).addAll(users);
} else {
Set<String> s = new HashSet<String>();
s.addAll(users);
vidName_UserMap.put(videoHash, s);
}
} else {
Iterator<String> it = users.iterator();
while (it.hasNext()) {
String temp = it.next();
if (!activeUsers.contains(temp)) {
it.remove();
}
}
}
System.out.println("Search result : " + Arrays.asList(users.toArray(new String[0])));
// String [] a = new String[]
return users.toArray(new String[0]);
}
private void removeUser(String user) {
int count = 0;
if (user_vidNameMap.containsKey(user)) {
Set<String> vids = user_vidNameMap.get(user);
Iterator<String> it = vids.iterator();
while (it.hasNext()) {
removeFromvidName_UserMap(user, it.next());
}
vids.clear();
user_vidNameMap.remove(user);
}
activeUsers.remove(user);
int ans = masterService.psDisConnectClient(hostAdder, user);
while (ans != ACK) {
if (count > 10) throw new RuntimeException("Time out in removing user from MS");
reconnectToMS();
ans = masterService.psDisConnectClient(hostAdder, user);
count++;
}
System.out.println("User " + user + " removed.");
}
@Scheduled(fixedDelay = SCHEDULED_CHECK)
public void checkActiveClients() {
Set<String> users = user_vidNameMap.keySet();
Iterator<String> it = users.iterator();
long time = System.currentTimeMillis();
int count = 0;
while (it.hasNext()) {
count++;
String user = it.next();
if (user == null) continue;
if (userAliveMap.containsKey(user)) {
if (userAliveMap.get(user).longValue() < time) {
removeUser(user);
userAliveMap.remove(user);
}
} else {
throw new RuntimeException("user in user-vid map but not in user-alive map");
}
}
// System.out.println("Debug: Scheduled Check count:"+count+" user
// count:"+user_vidNameMap.size());
System.gc();
}