/**
* Adds a new user
*
* @param username if a user with the given username already exists, the existing user will be
* returned
* @param connection the TCP connection which this user is associated with
* @return newly created user instance
*/
public synchronized User addUser(String username, TCPServerConnection connection) {
for (User user : users) {
if (user.getUsername().equals(username)) {
return user;
}
}
User user = new User(username, connection);
users.add(user);
return user;
}
/**
* Sends the given message to the given user, using the UDPServer
*
* @param user
* @param message
*/
public synchronized void notifyUser(User user, String message) {
if (testMode) {
log.debug("i am running in test mode.");
return;
}
if (user.getUdpPort() == 99999) {
testMode = true;
log.debug("i am running in test mode.");
return;
}
DatagramPacket dp =
new DatagramPacket(
message.getBytes(), // message content
0, // offset=0 => message starts at char 0
message.getBytes().length, // entire message
user.getTcpConnection().getClientSocket().getInetAddress(), // clients InetAddress
user.getUdpPort()); // clients udp port
UDPServer.send(dp);
}
// create events here
public synchronized void processMessage(TCPServerConnection tcpConnection, String input) {
if (input.startsWith("!login")) {
String username;
int udpPort = 0;
try {
String[] parts = input.split(" ");
username = parts[1].trim();
udpPort = Integer.parseInt(parts[2]);
if (getUser(tcpConnection) == null) {
User user = addUser(username, tcpConnection);
analyticsServer.processEvent((EventInterface) UserEvent.createUserLogin(username));
user.setUdpPort(udpPort);
tcpConnection.sendMessage("Successfully logged in as " + user.getUsername());
}
} catch (IndexOutOfBoundsException e) {
tcpConnection.sendMessage("You must provide a username!");
} catch (NumberFormatException e) {
tcpConnection.sendMessage("Login failed.");
} catch (ConnectException e) {
log.warn("could not connect to analytics server.");
} catch (RemoteException e) {
log.warn("could not process event: " + e.getMessage());
}
} else if (input.trim().equals("!logout")) {
User user = getUser(tcpConnection);
if (user == null) {
tcpConnection.sendMessage("You have to login first!");
} else {
String username = user.getUsername();
users.remove(user);
try {
analyticsServer.processEvent(UserEvent.createUserLogout(username));
user.endSession();
for (StatisticEvent e :
StatisticEvent.createEventsOnUserLogout(user.getSessionDuration())) {
analyticsServer.processEvent(e);
}
} catch (ConnectException e) {
log.warn("could not connect to analytics server.");
} catch (RemoteException e) {
log.warn("could not process event: " + e.getMessage());
}
tcpConnection.sendMessage("You successfully logged out as " + user.getUsername());
}
} else if (input.trim().equals("!end")) {
User user = getUser(tcpConnection);
if (user != null)
try {
analyticsServer.processEvent(UserEvent.createUserDisconnected(user.getUsername()));
user.endSession();
for (StatisticEvent e :
StatisticEvent.createEventsOnUserLogout(user.getSessionDuration())) {
analyticsServer.processEvent(e);
}
} catch (ConnectException e) {
log.warn("could not connect to analytics server.");
} catch (RemoteException e) {
log.warn("could not process event: " + e.getMessage());
}
} else if (input.trim().equals("!list")) {
for (Auction auction : AuctionManager.getInstance().getAuctions()) {
Bid heighestBid = auction.getHighestBid();
String msg =
String.format(
"%d. '%s' %s %s %s",
auction.getId(),
auction.getName(),
auction.getCreator().getUsername(),
heighestBid == null ? "0.00" : heighestBid.getAmount(),
heighestBid == null ? "none" : heighestBid.getBidder().getUsername());
tcpConnection.sendMessage(msg);
}
} else if (input.startsWith("!create")) {
if (getUser(tcpConnection) == null) {
tcpConnection.sendMessage("login first!");
return;
}
try {
String[] parts = input.split(" ");
StringBuilder sb = new StringBuilder();
for (int i = 2; i < parts.length; i++) {
sb.append(parts[i]).append(" ");
}
Auction auction =
AuctionManager.getInstance()
.createAuction(
sb.toString().trim(), Integer.valueOf(parts[1]), getUser(tcpConnection));
analyticsServer.processEvent(AuctionEvent.createAuctionStarted(auction.getId()));
tcpConnection.sendMessage(
"An auction '"
+ auction.getName()
+ "' with id "
+ auction.getId()
+ " has been created and will end on "
+ auction.getEndDateFormatted());
} catch (IndexOutOfBoundsException e) {
tcpConnection.sendMessage("You must provide the duration and the name of the auction!");
} catch (NumberFormatException e) {
tcpConnection.sendMessage("After !create you must enter the seconds!");
} catch (ConnectException e) {
log.warn("could not connect to analytics server.");
} catch (RemoteException e) {
log.warn("could not process event: " + e.getMessage());
}
} else if (input.startsWith("!bid")) {
try {
String[] parts = input.split(" ");
int auctionId = Integer.parseInt(parts[1]);
double amount = Double.parseDouble(parts[2]);
Bid heighestBid = AuctionManager.getInstance().getHeighestBid(auctionId);
User user = getUser(tcpConnection);
Auction auction = AuctionManager.getInstance().getAuctionById(auctionId);
if (user == null) {
tcpConnection.sendMessage("You have to login first!");
} else if (auction != null && user.equals(auction.getCreator())) {
tcpConnection.sendMessage("You may not bid on your own auction!");
} else {
Bid bid = AuctionManager.getInstance().newBid(amount, auctionId, user);
if (bid != null) {
try {
analyticsServer.processEvent(
BidEvent.createBidPlacedEvent(
user.getUsername(), auction.getId(), bid.getAmount()));
List<StatisticEvent> events = StatisticEvent.createEventsOnBidPlaced(bid.getAmount());
for (StatisticEvent e : events) {
analyticsServer.processEvent(e);
}
} catch (ConnectException e) {
log.warn("could not connect to analytics server.");
} catch (RemoteException e) {
log.warn("could not process event: " + e.getMessage());
}
tcpConnection.sendMessage(
"You successfully bid with "
+ bid.getAmount()
+ " on '"
+ bid.getAuction().getName()
+ "'");
if (heighestBid != null && !user.equals(heighestBid.getBidder())) {
try {
analyticsServer.processEvent(
BidEvent.createBidOverbidEvent(
heighestBid.getBidder().getUsername(),
heighestBid.getAuction().getId(),
heighestBid.getAmount()));
} catch (RemoteException e) {
log.warn("could not process event: " + e.getMessage());
}
notifyUser(
heighestBid.getBidder(),
"You have been overbid on '" + heighestBid.getAuction().getName() + "'");
}
} else {
tcpConnection.sendMessage("invalid bid");
}
}
} catch (IndexOutOfBoundsException e) {
tcpConnection.sendMessage("!bid usage: !bid auction.id bid.amount");
} catch (NumberFormatException e) {
tcpConnection.sendMessage("argument 2: int auction id, argument 3: double amount");
}
}
}
/**
* Returns the user connected by the given tcp connection
*
* @param connection
* @return
*/
private synchronized User getUser(TCPServerConnection connection) {
for (User user : users) {
if (connection.equals(user.getTcpConnection())) return user;
}
return null;
}