public Engine(IWorkItemRepository repository, IActivityRunner activityRunner,
IStateMachineProvider stateMachineProvider)
{
if (repository == null) throw new ArgumentNullException("repository");
if (activityRunner == null) throw new ArgumentNullException("activityRunner");
if (stateMachineProvider == null) throw new ArgumentNullException("stateMachineProvider");
_repository = repository;
_activityRunner = activityRunner;
_stateMachineProvider = stateMachineProvider;
_stateQueue = new ActionBlock<int>(id => UpdateState(id),
new ExecutionDataflowBlockOptions
{
MaxDegreeOfParallelism = 1
});
_workerQueue = new ActionBlock<int>(id => RunActivity(id),
new ExecutionDataflowBlockOptions
{
MaxDegreeOfParallelism = int.MaxValue
});
_stateQueue.Completion.ContinueWith(t => { _workerQueue.Complete(); }, TaskContinuationOptions.OnlyOnFaulted);
_workerQueue.Completion.ContinueWith(t => { ((IDataflowBlock) _stateQueue).Fault(t.Exception); },
TaskContinuationOptions.OnlyOnFaulted);
}
public EngineTests()
{
_activityRunner = Substitute.For<IActivityRunner>();
_stateMachineProvider = Substitute.For<IStateMachineProvider>();
_engine = new Engine(_repository, _activityRunner, _stateMachineProvider);
}
