private async Task SubmitTransaction(TransactionCommand cmd)
{
using (await _transactionLock.LockAsync())
{
_logger.Log(LogLevel.Debug, "gameSession", "Transaction submitted.", new
{
map = PlayerMap,
players = _players.ToDictionary(kvp => kvp.Key, kvp => kvp.Value.Id),
Cmd = cmd
});
var responses = await Task.WhenAll(PlayerMap.Select(async p =>
{
IScenePeerClient peer = null;
_players.TryGetValue(p.Value, out peer);
TransactionResponse response = null;
if (peer != null)
{
try
{
var r = await peer.RpcTask <TransactionCommand, TransactionResponse>(VALIDATE_TRANSACTION_RPC, cmd);
r.Success = true;
response = r;
}
catch (Exception)//Failed to execute transaction update on client
{
response = new TransactionResponse {
Success = false
};
}
}
return(Tuple.Create(p.Key, response));
}));
var receivedResponses = responses.Where(t => t.Item2 != null);
var isValid = true;
if (receivedResponses.Any())
{
isValid = receivedResponses.All(t => t.Item2.Success) && receivedResponses.Select(t => t.Item2).Distinct().Count() == 1;
}
if (!isValid)
{
await EnsureTransactionFailed($"game states hash comparaison failed: [{string.Join(", ", responses.Select(t => $"'{t.Item1}' => {t.Item2}"))}]");
}
var hash = responses.FirstOrDefault(r => r.Item2 != null)?.Item2.Hash;
_commands.Add(new TransactionLogItem {
Command = cmd, ResultHash = hash ?? 0, HashAvailable = hash.HasValue
});
}
}
/// <summary>
/// Adds a command to the game state
/// </summary>
/// <param name="userId">User that issued the command</param>
/// <param name="playerId">Player that issued the command. (Different from userId to allow IA players or several players on a single client)</param>
/// <param name="command">The command name</param>
/// <param name="args"></param>
/// <param name="updatedGameHash"></param>
/// <returns></returns>
public Task SubmitTransaction(string userId, string playerId, string command, JObject args)
{
if (userId != null)
{
if (playerId == null)
{
throw new ClientException("Missing playerId");
}
string u;
if (!PlayerMap.TryGetValue(playerId, out u))
{
throw new InvalidOperationException("The user is not in the PlayerMap");
}
if (u != userId)
{
throw new InvalidOperationException("The user cannot handler the specified playerId");
}
if (!_players.ContainsKey(userId))
{
throw new InvalidOperationException("The user is not connected");
}
}
if (command == null)
{
throw new ClientException("Missing command");
}
var cmd = new TransactionCommand
{
Cmd = command,
Arguments = args.ToString(),
CreatedOn = DateTime.UtcNow,
IssuerPlayerId = playerId,
IssuerUserId = userId,
FinalStepId = CurrrentStepId++
};
return(SubmitTransaction(cmd));
}
