public async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
try
{
await Task.Delay(_pollingInterval, stoppingToken);
bool success;
int retrievedInstanceCount;
do
{
(success, retrievedInstanceCount) = await _deleteService.CleanupDeletedInstancesAsync(stoppingToken);
}while (success && retrievedInstanceCount == _batchSize);
}
catch (OperationCanceledException) when(stoppingToken.IsCancellationRequested)
{
// Cancel requested.
throw;
}
catch (Exception ex)
{
// The job failed.
_logger.LogCritical(ex, "Unhandled exception in the deleted instance cleanup worker.");
}
}
}
public async Task GivenANumberOfDeletedEntriesAndBatchSize_WhenCallingExecute_ThenDeleteShouldBeCalledCorrectNumberOfTimes(int numberOfDeletedInstances, int expectedDeleteCount)
{
(bool, int) GenerateCleanupDeletedInstancesAsyncResponse()
{
var returnValue = Math.Min(numberOfDeletedInstances, BatchSize);
numberOfDeletedInstances = Math.Max(numberOfDeletedInstances - BatchSize, 0);
if (numberOfDeletedInstances == 0)
{
_cancellationTokenSource.Cancel();
}
return(true, returnValue);
}
_deleteService.CleanupDeletedInstancesAsync().ReturnsForAnyArgs(
x => GenerateCleanupDeletedInstancesAsyncResponse());
await _deletedInstanceCleanupWorker.ExecuteAsync(_cancellationTokenSource.Token);
await _deleteService.ReceivedWithAnyArgs(expectedDeleteCount).CleanupDeletedInstancesAsync();
}
