private static async Task ListenLoopExecuted(
Queue <Func <Task> > actions,
IMessageProcessingStrategy messageProcessingStrategy)
{
var initalActionCount = (double)actions.Count;
var timeout = MinTaskDuration + TimeSpan.FromMilliseconds(initalActionCount / 100);
var stopwatch = Stopwatch.StartNew();
while (actions.Any())
{
var batch = GetFromFakeSnsQueue(actions, messageProcessingStrategy.MaxConcurrency);
if (batch.Count < 1)
{
break;
}
foreach (var action in batch)
{
(await messageProcessingStrategy.StartWorkerAsync(action, CancellationToken.None)).ShouldBeTrue();
}
messageProcessingStrategy.MaxConcurrency.ShouldBeGreaterThanOrEqualTo(0);
(await messageProcessingStrategy.WaitForAvailableWorkerAsync()).ShouldBeGreaterThan(0);
messageProcessingStrategy.MaxConcurrency.ShouldBeGreaterThan(0);
}
}
private async Task <int> GetDesiredNumberOfMessagesToRequestFromSqsAsync()
{
int maximumMessagesFromAws = MessageConstants.MaxAmazonMessageCap;
int maximumWorkers = _messageProcessingStrategy.MaxConcurrency;
int messagesToRequest = Math.Min(maximumWorkers, maximumMessagesFromAws);
if (messagesToRequest < 1)
{
// Wait for the strategy to have at least one worker available
int availableWorkers = await _messageProcessingStrategy.WaitForAvailableWorkerAsync().ConfigureAwait(false);
messagesToRequest = Math.Min(availableWorkers, maximumMessagesFromAws);
}
if (messagesToRequest < 1)
{
_log.LogWarning("No workers are available to process SQS messages.");
messagesToRequest = 0;
}
return(messagesToRequest);
}
