@RequestMapping(value = VIDEO_REMOVE_PATH, method = RequestMethod.DELETE)
public @ResponseBody int deleteVideo(
@RequestParam(value = "username") String uName,
@RequestParam(value = "video") String videoHash,
HttpServletResponse response) {
try {
if (!user_vidNameMap.containsKey(uName)) {
response.setStatus(402); // client not connected
return 0;
}
videoHash = videoHash.trim();
int ans = masterService.psDeleteVideo(hostAdder, uName, videoHash);
while (ans == PS_NOT_CONNECTED) {
reconnectToMS();
ans = masterService.psDeleteVideo(hostAdder, uName, videoHash);
}
if (ans == FAILED) return FAILED;
user_vidNameMap.get(uName).remove(videoHash);
removeFromvidName_UserMap(uName, videoHash);
return ACK;
} catch (Exception e) {
System.err.println(e.getMessage());
return FAILED;
}
}
@RequestMapping(value = CLIENT_CONNECT_PATH, method = RequestMethod.POST)
public @ResponseBody int connectClient(@RequestBody String allVid) {
try {
int reply = FAILED;
String[] videos = allVid.split(",");
String uName = videos[0].trim();
videos = java.util.Arrays.copyOfRange(videos, 1, videos.length);
// System.out.println("Client connect"+hostAdder+" "+uName+" "+ Arrays.asList(videos));
int ans = masterService.psConnectClient(hostAdder, uName, videos);
// System.out.println("ans =" +ans +" "+FAILED);
while (ans == PS_NOT_CONNECTED) {
reconnectToMS();
ans = masterService.psConnectClient(hostAdder, uName, videos);
}
if (ans == FAILED) return FAILED;
// System.out.println("Clinet "+ uName + " connected");
if (user_vidNameMap.containsKey(uName)) {
reply = CLIENT_ALREADY_CONNECTED;
} else {
reply = CLIENT_CONNECTED;
user_vidNameMap.put(uName, new HashSet<String>());
}
// System.out.println("Clinet "+ uName + " connected");
Set<String> vidSet = user_vidNameMap.get(uName);
for (int i = 0; i < videos.length; i++) {
String temp = videos[i].trim();
// System.out.println("add video");
if (!temp.equals("")) {
vidSet.add(temp);
addTovidName_UserMap(uName, temp);
}
}
// System.out.println("Clinet "+ uName + " connected");
userAliveMap.put(uName, new Long(System.currentTimeMillis() + TTL));
// System.out.println("Clinet "+ uName + " connected");
activeUsers.add(uName);
System.out.println("Clinet " + uName + " connected");
return reply;
} catch (Exception e) {
System.out.println("Error: " + e.getMessage());
return FAILED;
}
}
@Scheduled(fixedDelay = SEND_HEART_BEAT_DELAY)
public void sendHeartBeat() {
try {
masterService.psHeartBeat(hostAdder);
} catch (Exception e) {
System.out.println("Error Sending HeardBeat");
}
}
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.");
}
@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]);
}
@PostConstruct
public void getHostAdderesAndConnectToMS() {
try {
Enumeration e = NetworkInterface.getNetworkInterfaces();
while (e.hasMoreElements()) {
NetworkInterface n = (NetworkInterface) e.nextElement();
Enumeration ee = n.getInetAddresses();
while (ee.hasMoreElements()) {
InetAddress i = (InetAddress) ee.nextElement();
if (i.getHostAddress().contains("10.") || i.getHostAddress().contains("192.")) {
hostAdder = i.getHostAddress().trim();
System.out.println("Run at start. IP:" + hostAdder);
if (masterService.connectPS(hostAdder) == FAILED) {
System.out.println("Could not connect to MS. Shutting down");
System.exit(0);
}
return;
}
}
}
} catch (Exception e) {
}
}
private void reconnectToMS() {
if (masterService.connectPS(hostAdder) == FAILED) {
System.out.println("Could not connect to MS. Shutting down");
System.exit(0);
}
}
