public static IAsyncObservable <IList <TSource> > Buffer <TSource>(this IAsyncObservable <TSource> source, TimeSpan timeSpan, int count, IAsyncScheduler scheduler)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (timeSpan < TimeSpan.Zero)
{
throw new ArgumentNullException(nameof(timeSpan));
}
if (count <= 0)
{
throw new ArgumentNullException(nameof(count));
}
if (scheduler == null)
{
throw new ArgumentNullException(nameof(scheduler));
}
return(Create <IList <TSource> >(async observer =>
{
var(sink, timer) = await AsyncObserver.Buffer(observer, timeSpan, count, scheduler).ConfigureAwait(false);
var subscription = await source.SubscribeSafeAsync(sink).ConfigureAwait(false);
return StableCompositeAsyncDisposable.Create(subscription, timer);
}));
}
public static IAsyncObservable <IList <TSource> > Buffer <TSource>(this IAsyncObservable <TSource> source, int count)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (count <= 0)
{
throw new ArgumentNullException(nameof(count));
}
return(Create <IList <TSource> >(observer => source.SubscribeSafeAsync(AsyncObserver.Buffer(observer, count))));
}
// REVIEW: This overload is inherited from Rx but arguably a bit esoteric as it doesn't provide context to the closing selector.
public static IAsyncObservable <IList <TSource> > Buffer <TSource, TBufferClosing>(this IAsyncObservable <TSource> source, Func <IAsyncObservable <TBufferClosing> > bufferClosingSelector)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (bufferClosingSelector == null)
{
throw new ArgumentNullException(nameof(bufferClosingSelector));
}
return(Create <IList <TSource> >(async observer =>
{
var(sourceObserver, closingDisposable) = await AsyncObserver.Buffer <TSource, TBufferClosing>(observer, bufferClosingSelector).ConfigureAwait(false);
var sourceSubscription = await source.SubscribeSafeAsync(sourceObserver).ConfigureAwait(false);
return StableCompositeAsyncDisposable.Create(sourceSubscription, closingDisposable);
}));
}
public static IAsyncObservable <IList <TSource> > Buffer <TSource, TBufferBoundary>(this IAsyncObservable <TSource> source, IAsyncObservable <TBufferBoundary> bufferBoundaries)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (bufferBoundaries == null)
{
throw new ArgumentNullException(nameof(bufferBoundaries));
}
return(Create <IList <TSource> >(async observer =>
{
var(sourceObserver, boundariesObserver) = AsyncObserver.Buffer <TSource, TBufferBoundary>(observer);
var sourceSubscription = await source.SubscribeSafeAsync(sourceObserver).ConfigureAwait(false);
var boundariesSubscription = await bufferBoundaries.SubscribeSafeAsync(boundariesObserver).ConfigureAwait(false);
return StableCompositeAsyncDisposable.Create(sourceSubscription, boundariesSubscription);
}));
}
