private async Task <string> Listen()
{
var startedAt = DateTime.UtcNow;
var cycleId = Guid.NewGuid();
var exception = default(Exception);
var eventIdArray = new long[0];
try
{
if (!_initialized)
{
await _queueDbAccessManager.CreateQueueDbIfNeeded();
await _queueDbAccessManager.RegisterSubscriberIfNeeded();
_initialized = true;
}
var eventArray = await _queueDbAccessManager.GetEvents();
eventIdArray = eventArray.Select(e => e.Id).ToArray();
var eventListenerInfo = new EventListenerInfo(cycleId, eventIdArray, startedAt);
foreach (var @event in eventArray)
{
@event.SetListener(eventListenerInfo);
_eventHandlerActor.Tell(@event);
}
}
catch (Exception ex)
{
exception = ex;
}
var logContent = new
{
message = exception == null ? "Listener cycle completed." : "Listener cycle completed with error.",
cycleId,
startedAt,
events = eventIdArray,
readingTime = $"{Math.Round((DateTime.UtcNow - startedAt).TotalMilliseconds)}ms"
};
Log.Logger.Write(exception == null ? LogEventLevel.Debug : LogEventLevel.Error, exception, "content: {content}", logContent.ToJson(Formatting.Indented));
return(ScheduleNextListenCommand);
}
public void SetListener(EventListenerInfo listener)
{
Listener = listener;
}