/// <summary>
/// Constructs an <see cref="IComponentConditionEvaluator" />.
/// When called multiple times builds a reference count to monitor the condition
/// across multiple streams.
/// </summary>
/// <param name="timespanFactory">The <see cref="TimeSpan"/> factory.</param>
/// <param name="ct">The cancellation token.</param>
/// <returns></returns>
public async Task <IComponentConditionEvaluator> BuildAsync(IConditionInstanceTimeSpanFactory timespanFactory, CancellationToken ct = default)
{
if (!_monitoring)
{
await StartMonitorAsync(timespanFactory, ct).ConfigureAwait(false);
_monitoring = true;
}
return(await _manager.CreateEvaluatorAsync(ct));
}
public void SetUp()
{
_timeSpanFactory = A.Dummy <IConditionInstanceTimeSpanFactory>();
_sut = A.Fake <ComponentMonitorSpecification>();
}
/// <summary> /// Called when creating the first evaluator to initialize monitoring for condition instances within the component. /// </summary> /// <param name="timeSpanFactory">The <see cref="TimeSpan"/> factory.</param> /// <param name="ct">The cancelation token.</param> /// <returns></returns> protected abstract Task StartMonitorAsync(IConditionInstanceTimeSpanFactory timeSpanFactory, CancellationToken ct);
protected override Task StartMonitorAsync(IConditionInstanceTimeSpanFactory timeSpanFactory, CancellationToken ct)
{
_timeSpanFactory = timeSpanFactory;
_eventMonitorSink.AddEvaluator(typeof(TEvent), this);
return(Task.CompletedTask);
}
