public MessagePushHandler(
RequestDelegate next,
IApplicationLifetime appLifetime,
IConversationDataSource conversationDataSource,
JwtAuthenticationService jwtAuthentioncationService,
string url)
{
_next = next;
_applicationStoppingCancellationToken = appLifetime.ApplicationStopping;
_conversationDataSource = conversationDataSource;
_jwtAuthentioncationService = jwtAuthentioncationService;
_url = url;
}
static async Task PushMessages(IConversationDataSource conversationDataSource, Guid userId, WebSocket socket, CancellationToken cancellationToken)
{
var messagesQueue = new ConcurrentQueue <Message>();
conversationDataSource.OnMessage += enqueueMessage;
try
{
while (!cancellationToken.IsCancellationRequested)
{
if (!messagesQueue.TryDequeue(out var message))
{
await Task.Delay(PushMessagePollingInterval, cancellationToken);
continue;
}
try
{
var json = JsonConvert.SerializeObject(message);
var buffer = Encoding.UTF8.GetBytes(json);
await socket.SendAsync(buffer, WebSocketMessageType.Text, true, cancellationToken);
}
catch (OperationCanceledException)
{
// Исключение OperationCanceledException обрабатывать не нужно.
// Выходим из метода при следующей итерации цикла.
}
}
}
finally
{
conversationDataSource.OnMessage -= enqueueMessage;
}
void enqueueMessage(object sender, MessageEventArgs messageEventArgs)
{
var message = messageEventArgs.Message;
var conversationId = message.ConversationId;
// TODO: переписать
if (conversationId == "public" ||
conversationId.Contains($"{userId}", StringComparison.OrdinalIgnoreCase))
{
messagesQueue.Enqueue(message);
}
}
}
public ConversationsController(IConversationDataSource dataSource)
{
_dataSource = dataSource ?? throw new ArgumentNullException(nameof(dataSource));
}
