public async Task HandleAsync(ProcessAsyncEventsJob job, CancellationToken cancellationToken)
{
Logger.Trace($"Starting to process async event queue '{job.QueueName}' with {job.AttemptsLeft} attempts left");
try
{
await asyncEventWorker.RunQueueBacklogAsync(job.QueueName);
}
catch (AsyncEventProcessingSequenceException e)
{
Logger.Debug(e, $"AsyncEventProcessingSequenceException occurred during asynchronous queue processing");
await ScheduleRetryAsync(job);
}
catch (OptimisticConcurrencyException e)
{
Logger.Warn(e, $"Optimistic concurrency exception occurred while processing '{job.QueueName}' async event queue");
await ScheduleRetryAsync(job);
}
catch (Exception e)
{
Logger.Error(e, $"Unhandled exception occurred while processing '{job.QueueName}' async event queue");
throw;
}
// TODO handle transient I/O errors with retries
Logger.Trace($"Finished processing async event queue '{job.QueueName}'");
}
public async Task RunQueueBacklogAsync(string queueName)
{
asyncEventWorkerLockCache.EnsureInitialized();
await asyncEventWorkerLockCache.EnterQueueAsync(queueName);
try
{
await asyncEventWorkerImplementation.RunQueueBacklogAsync(queueName);
}
finally
{
asyncEventWorkerLockCache.ExitQueue(queueName);
}
}