public synchronized String transferFromBankToPlayer(Request request, Response response) {
lamport.Add();
if (banks.containsKey(request.params(":gameid"))) {
Collection<Account> accounts = banks.get(request.params(":gameid"));
for (Account account : accounts) {
if (account.getPlayer().getId().equals(request.params(":to"))) {
int am = Integer.parseInt(request.params(":amount"));
account.AddAmount(am);
banks.put(request.params(":gameid"), accounts);
String uri = localUri + "transfers/" + UniqueId++;
Transfer trans =
new Transfer(
request.params(":from"), request.params(":to"), am, request.body(), "", uri);
Event event =
new Event(
"bank transfer",
request.body(),
request.body(),
uri,
account.getPlayer().getId());
transfers.add(trans);
BanksService.sendUpdate(trans, request.params(":gameid"));
response.status(201);
return gson.toJson(event);
}
}
response.status(404);
return "Player not found.";
} else {
response.status(404);
return "Game not found.";
}
}
public static void main(String[] args) {
transactions = new ArrayList<Transaction>();
transfers = new ArrayList<Transfer>();
banks = new HashMap<String, Collection<Account>>();
Collection<Account> accountList = new ArrayList<Account>();
BanksService banksService = new BanksService();
Place place = new Place("boom");
Player player1 = new Player("test", "", "", place, 1);
Player player2 = new Player("test2", "", "", place, 1);
Account account1 = new Account(player1, 350);
Account account2 = new Account(player2, 100);
accountList.add(account1);
accountList.add(account2);
banks.put("test", accountList);
System.out.println("test banks: " + gson.toJson(banks.get("test")));
try {
Service service =
new Service(
"banks",
"gruppe ingrid",
"banks",
"https://vs-docker.informatik.haw-hamburg.de/ports/11431/banks");
System.out.println("service wird registriert...");
String tmp = gson.toJson(service);
Unirest.post("http://vs-docker.informatik.haw-hamburg.de:8053/services")
.header("Content-Type", "application/json")
.body(tmp)
.asString();
} catch (UnirestException e) {
System.out.println("Service konnte nicht registriert werden.");
e.printStackTrace();
}
get(
"/banks",
(request, response) -> {
ArrayList<String> uris = new ArrayList<>();
for (String uri : banks.keySet()) {
uris.add(localUri + uri);
}
String json = gson.toJson(uris);
response.status(200);
return json;
});
post(
"/banks",
(request, response) -> {
String gameid = UniqueId++ + "";
Collection<Account> gameacc = new ArrayList<Account>();
Game json = gson.fromJson(request.body(), Game.class);
json.setGameid(gameid);
for (Player player : json.getPlayers()) {
Account acc = new Account();
acc.setPlayer(player);
acc.setSaldo(0);
acc.setUri(localUri + gameid + "/players/" + player.getId());
gameacc.add(acc);
}
banks.put(gameid, gameacc);
response.status(200);
response.header("location", localUri + gameid);
return "ok";
});
get(
"/banks/transfers",
(request, response) -> {
return gson.toJson(transfers);
});
get(
"/banks/transfers/:transferid",
(request, response) -> {
String uri = localUri + "transfers/" + request.params(":transferid");
for (Transfer trans : transfers) {
if (trans.getUri().equals(uri)) {
response.status(200);
return gson.toJson(trans);
}
}
response.status(404);
return "Transfer not found.";
});
put(
"/banks/:gameid",
(request, response) -> {
Game json = gson.fromJson(request.body(), Game.class);
String gameid = request.params(":gameid");
Collection<Account> gameacc = banks.getOrDefault(gameid, new ArrayList<Account>());
for (Player player : json.getPlayers()) {
Account acc = new Account();
acc.setPlayer(player);
acc.setSaldo(0);
acc.setUri(localUri + gameid + "/players/" + player.getId());
gameacc.add(acc);
}
banks.put(gameid, gameacc);
response.header("uri", localUri + gameid + "/players");
return "";
});
get(
"/banks/:gameid",
(request, response) -> {
String gameid = request.params(":gameid");
String json = gson.toJson(banks.getOrDefault(gameid, new ArrayList<Account>()));
return json;
});
post(
"/banks/:gameid/players",
(request, response) -> {
Type collectionType = new TypeToken<ArrayList<Account>>() {}.getType();
ArrayList<Account> json = gson.fromJson(request.body(), collectionType);
Collection<Account> current =
banks.getOrDefault(request.params(":gameid"), new ArrayList<Account>());
Set<Account> set = new HashSet<Account>(current);
for (Account acc : json) {
if (set.contains(acc)) {
response.status(409);
return "Player " + acc.getPlayer().getId() + " already exists.";
} else {
set.add(acc);
current.add(acc);
}
}
banks.put(request.params(":gameid"), (ArrayList<Account>) current);
response.status(201);
return "bank account has been created";
});
get(
"/banks/:gameid/players/:playerid",
(request, response) -> {
if (banks.containsKey(request.params(":gameid"))) {
Collection<Account> accounts = banks.get(request.params(":gameid"));
for (Account account : accounts) {
if (account.getPlayer().getId().equals(request.params(":playerid"))) {
response.status(200);
return account.getSaldo();
}
}
response.status(404);
return "Player not found.";
} else {
response.status(404);
return "Game not found.";
}
});
post(
"/banks/:gameid/transfer/to/:to/:amount",
(request, response) -> {
return banksService.transferFromBankToPlayer(request, response);
});
post(
"/banks/:gameid/transfer/from/:from/:amount",
(request, response) -> {
return banksService.transferFromPlayerToBank(request, response);
});
post(
"/banks/:gameid/transfer/from/:from/to/:to/:amount",
(request, response) -> {
return banksService.transferFromPlayerToPlayer(request, response);
});
post(
"/banks/sync/:gameid",
(request, response) -> {
return banksService.updateAccounts(request, response);
});
post(
"/banks/sync/all",
(request, response) -> {
return banksService.replaceBanks(request, response);
});
get(
"/banks/sync/all",
(request, response) -> {
String tmp = gson.toJson(banksService.banks);
Unirest.post(replication + "/sync/all")
.header("Content-Type", "application/json")
.body(tmp)
.asString();
return "success";
});
post(
"/banks/change/replication",
(request, response) -> {
replication = request.body();
return replication;
});
get(
"/stop/service",
(request, response) -> {
stop();
return "";
});
}
public synchronized String updateAccounts(Request request, Response response) {
Transaction json = gson.fromJson(request.body(), Transaction.class);
if (json.getTimestamp() > lamport.getTime()) {
lamport.Update(json.getTimestamp());
lamport.Add();
Unirest.get(replication + "/sync/all");
return "replacing database.";
} else {
lamport.Add();
for (Transaction transaction : transactions) {
if (transaction.getTransfer().equals(json.getTransfer())
&& transaction.getTimestamp() == json.getTimestamp()) {
return "failure, transfer already exists.";
}
}
if (banks.containsKey(request.params(":gameid"))) {
Collection<Account> accounts = banks.get(request.params(":gameid"));
for (Account account : accounts) {
if (account.getPlayer().getId().equals(request.params(":from"))) {
int am = Integer.parseInt(request.params(":amount"));
if (account.getSaldo() >= am) {
account.SubtractAmount(am);
banks.put(request.params(":gameid"), accounts);
String uri = localUri + "transfers/" + UniqueId++;
Transfer trans =
new Transfer(
request.params(":from"), request.params(":to"), am, request.body(), "", uri);
Event event =
new Event(
"bank transfer",
request.body(),
request.body(),
uri,
account.getPlayer().getId());
transfers.add(trans);
Transaction transaction = new Transaction(trans, lamport.getTime());
transactions.add(transaction);
BanksService.sendUpdate(trans, request.params(":gameid"));
response.status(201);
return gson.toJson(event);
} else {
response.status(403);
return "Insufficent funds.";
}
}
}
response.status(404);
return "Player not found.";
}
// from Bank to Player
else if (json.getTransfer().getFrom().equals("bank")) {
if (banks.containsKey(request.params(":gameid"))) {
Collection<Account> accounts = banks.get(request.params(":gameid"));
for (Account account : accounts) {
if (account.getPlayer().getId().equals(request.params(":to"))) {
int am = Integer.parseInt(request.params(":amount"));
account.AddAmount(am);
banks.put(request.params(":gameid"), accounts);
String uri = localUri + "transfers/" + UniqueId++;
Transfer trans =
new Transfer(
request.params(":from"), request.params(":to"), am, request.body(), "", uri);
Event event =
new Event(
"bank transfer",
request.body(),
request.body(),
uri,
account.getPlayer().getId());
transfers.add(trans);
BanksService.sendUpdate(trans, request.params(":gameid"));
response.status(201);
return gson.toJson(event);
}
}
response.status(404);
return "Player not found.";
}
// from Player to Player
else {
Collection<Event> events = new ArrayList<Event>();
boolean transactionSuccessful = false;
Transfer trans = null;
Collection<Account> accounts = banks.get(request.params(":gameid"));
Collection<Account> copy = new ArrayList<>();
copy.addAll(accounts);
for (Account account : copy) {
if (account.getPlayer().getId().equals(request.params(":from"))) {
int am = Integer.parseInt(request.params(":amount"));
if (account.getSaldo() >= am) {
account.SubtractAmount(am);
break;
} else {
response.status(403);
return "Insufficent funds.";
}
}
}
for (Account account : copy) {
if (account.getPlayer().getId().equals(request.params(":to"))) {
int am = Integer.parseInt(request.params(":amount"));
account.AddAmount(am);
String uri = localUri + "transfers/" + UniqueId++;
trans =
new Transfer(
request.params(":from"), request.params(":to"), am, request.body(), "", uri);
Event event =
new Event(
"bank transfer",
request.body(),
request.body(),
uri,
account.getPlayer().getId());
events.add(event);
transactionSuccessful = true;
}
}
if (transactionSuccessful) {
// transfer was successful, time to "commit" the changes!
banks.put(request.params(":gameid"), copy);
transfers.add(trans);
Transaction transaction = new Transaction(trans, lamport.getTime());
transactions.add(transaction);
BanksService.sendUpdate(trans, request.params(":gameid"));
response.status(201);
return gson.toJson(events);
} else {
// OH OH! Something went wrong! But we actually didn't change anything, so we're good.
response.status(404);
return "Player not found.";
}
}
} else {
return "Game not found.";
}
}
}
