private V2MessageList CreateMessageList(int count, int startId = 1)
{
var result = new V2MessageList();
for (var i = 0; i < count; ++i)
{
result.Add(new V2Message("msg" + (startId + i), "1477297302", "messageType", "streamId", "message", 1));
}
;
return(result);
}
protected void ProcessMessageList(V2MessageList messageList)
{
if (messageList == null || _onMessage == null)
{
return;
}
foreach (var eventHandler in _onMessage.GetInvocationList())
{
NotifyAsync((EventHandler <MessageEventArgs>)eventHandler, messageList);
}
}
private void Notify(EventHandler <MessageEventArgs> messageEventHandler, V2MessageList messageList)
{
foreach (var message in messageList)
{
TraceSource.TraceEvent(
TraceEventType.Verbose, 0,
"Notifying listener about message with ID \"{0}\" in stream \"{1}\"",
(message as V2Message)?.Id, (message as V2Message)?.StreamId);
try
{
messageEventHandler.Invoke(this, new MessageEventArgs(message));
}
catch (Exception e)
{
TraceSource.TraceEvent(
TraceEventType.Error, 0,
"Unhandled exception caught when notifying listener about message with ID \"{0}\": {1}",
message.Id, e);
}
}
}
protected async void NotifyAsync(EventHandler <MessageEventArgs> messageEventHandler, V2MessageList messageList)
{
// Notify each handler in a separate task, maintaining the order of messages in the list, and
// get back to reading the data feed again without waiting for listeners to process messages.
Task task;
if (_tasks.TryGetValue(messageEventHandler, out task))
{
await task;
}
_tasks[messageEventHandler] = Task.Run(() => Notify(messageEventHandler, messageList));
}
